15 results on '"Naveen Kumar Sompalli"'
Search Results
2. Fabrication of target specific solid-state optical sensors using chromoionophoric probe–integrated porous monolithic polymer and silica templates for cobalt ions
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Prabhakaran Deivasigamani and Naveen Kumar Sompalli
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chemistry.chemical_classification ,geography ,Materials science ,Fabrication ,geography.geographical_feature_category ,010401 analytical chemistry ,02 engineering and technology ,Polymer ,Mesoporous silica ,021001 nanoscience & nanotechnology ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Analytical Chemistry ,X-ray photoelectron spectroscopy ,Chemical engineering ,chemistry ,Monolith ,0210 nano-technology ,Mesoporous material ,Porous medium ,Porosity - Abstract
The article demonstrates the design of two solid-state sensors for the capturing of industrially relevant ultra-trace Co(II) ions using porous monolithic silica and polymer templates. The mesoporous silica reveals high surface area and voluminous pore dimensions that ensures homogeneous anchoring of 4-((5-(allylthio)-1,3,4-thiadiazol-2-yl)diazenyl)benzene-1,3-diol, as the chromoionophore. We report a first of its kind solid-state macro-/meso-porous polymer monolithic optical sensor from a monomeric chromoionophore, i.e., 2-(4-butylphenyl)diazenyl)-2-hydroxybenzylidene)hydrazine-1-carbothioamide. The monolithic solid-state sensors are characterized using HR-TEM-SAED, FE-SEM-EDAX, p-XRD, XPS, 29Si/13C CPMAS NMR, FT-IR, TGA, and BET/BJH analysis. The electron microscopic images reveal a highly ordered hexagonal mesoporous network of honeycomb pattern for silica monolith, and a long-range macroporous framework with mesoporous channels for polymer monolith. The sensors offer exclusive ion-selectivity and sensitivity for trace cobalt ions, through a concentration proportionate visual color transition, with a response kinetics of ≤ 5 min. The optimization of ion-sensing performance reveals an excellent detection limit of 0.29 and 0.15 ppb for Co(II), using silica- and polymer-based monolithic sensors, respectively. The proposed sensors are tested with industrial wastewater and spent Li-ion batteries, which reveals a superior cobalt ion capturing efficiency of ≥ 99.2% (RSD: ≤ 2.07%).
- Published
- 2021
3. Visible-light harvesting innovative W6+/Yb3+/TiO2 materials as a green methodology photocatalyst for the photodegradation of pharmaceutical pollutants
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Akhila Maheswari Mohan, Ankita Mohanty, Prabhakaran Deivasigamani, and Naveen Kumar Sompalli
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geography ,Anatase ,Nanocomposite ,Materials science ,geography.geographical_feature_category ,Dopant ,02 engineering and technology ,010501 environmental sciences ,021001 nanoscience & nanotechnology ,01 natural sciences ,Light intensity ,Chemical engineering ,Photocatalysis ,Physical and Theoretical Chemistry ,Monolith ,0210 nano-technology ,Photodegradation ,Mesoporous material ,0105 earth and related environmental sciences - Abstract
In this work, we report on the synthesis of a new-age reusable visible-light photocatalyst using a heterojunction nanocomposite of W6+/Yb3+ on a mixed-phase mesoporous network of monolithic TiO2. The structural properties of the monolithic photocatalysts are characterized using p-XRD, SEM-EDAX, TEM-SAED, XPS, PLS, UV–Vis-DRS, FT-IR, micro-Raman, TG–DTA, and N2 isotherm analysis. The electron microscopic analysis reveals a mesoporous network of ordered worm-like monolithic design, with a polycrystalline mixed-phase (anatase/rutile) TiO2 composite, as indicated by diffraction studies. The UV–Vis-DRS analysis reveals a redshift in the light absorption characteristics of the mixed-phase TiO2 monolith as a function of W6+/Yb3+ co-doping. It is observed that the use of (8.0 mol%)W6+/0.4 (mole%)Yb3+ co-doped monolithic TiO2 photocatalyst, with an energy bandgap of 2.77 eV demonstrates superior visible-light photocatalysis, which corroborates with the PLS studies in terms of voluminous e−/h+ pair formation. The practical application of the photocatalyst has been investigated through a time-dependent dissipation of enrofloxacin, a widely employed antimicrobial drug, and its degradation pathway has been monitored by LC–MS-ESI and TOC analysis. The impact of physio-chemical parameters such as solution pH, sensitizers, drug concentration, dopant/codopant stoichiometry, catalyst quantity, and light intensity has been comprehensively studied to monitor the process efficiency.
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- 2021
4. Chromatographic Separation of Fluoroquinolone Drugs and Drug Degradation Profile Monitoring through Quality-by-Design Concept
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Naveen Kumar Sompalli, Satya Prasad Asu, Prabhakaran Deivasigamani, and Akhila Maheswari Mohan
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Accuracy and precision ,010501 environmental sciences ,01 natural sciences ,Pefloxacin ,Quality by Design ,Analytical Chemistry ,Anti-Infective Agents ,Drug Stability ,Limit of Detection ,Moxifloxacin ,medicine ,Chromatography, High Pressure Liquid ,Norfloxacin ,0105 earth and related environmental sciences ,Detection limit ,Chromatography ,Chemistry ,010401 analytical chemistry ,Reproducibility of Results ,General Medicine ,Factorial experiment ,0104 chemical sciences ,Linear Models ,Ofloxacin ,Fluoroquinolones ,Tablets ,medicine.drug - Abstract
The article reports on the development of an efficient, robust and sensitive HPLC-DAD method for the simultaneous determination of five fluoroquinolone-based antimicrobial drugs, namely ciprofloxacin, moxifloxacin, norfloxacin, ofloxacin and pefloxacin in both aquatic and tablet formulations. The robustness of the high-performance liquid chromatography with diode-array detection (HPLC-DAD) method has been evaluated through the concepts of quality-by-design (QbD) and full factorial design of experiments (DoEs), using a Minitab 17 statistical tool. The proposed method offers sequential separation with well-defined peak shape and resolution, and has also been evaluated by following international council for harmonization (ICH) pharmaceutical guidelines. A linear signal response has been achieved for the target fluoroquinolones (FQ) drugs in the concentration range of 45–20,000 ng/mL, with an average correlation coefficient (r2) value of 0.9997, and a data precision and accuracy range of 99.3–100.9%, with an RSD value of ≤0.95%, for hexaplicate measurements. The methodology offers superior sensitivity for the target FQ drugs, with the limit of detection (LD) range of 10–25 ng/mL, and the limit of quantification (LQ) range of 51–86 ng/mL, respectively. Using the proposed method, the article carries the first of its kind report in studying the degradation profile monitoring and drug assay determination in tablet formulations and under various physiological buffer stress conditions, for pharmaceutical validation.
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- 2020
5. ZrO
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Dhivya, Jagadeesan, Naveen Kumar, Sompalli, Akhila Maheswari, Mohan, C V S Brahmmananda, Rao, Sivaraman, Nagarajan, and Prabhakaran, Deivasigamani
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Light ,Pharmaceutical Preparations ,Polymers ,Water ,Environmental Pollutants ,Porosity ,Catalysis ,Water Pollutants, Chemical ,Nanocomposites ,Norfloxacin - Abstract
This work reports a unique ZrO
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- 2021
6. CaO/CeO2 nanocomposite dispersed macro-/meso-porous polymer monoliths as new generation visible light heterogeneous photocatalysts
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Satya Prasad Asu, Naveen Kumar Sompalli, Satheesh Kuppusamy, Akhila Maheswari Mohan, and Prabhakaran Deivasigamani
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Renewable Energy, Sustainability and the Environment ,General Materials Science ,General Chemistry - Published
- 2022
7. Visible-light harvesting innovative W
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Naveen Kumar, Sompalli, Ankita, Mohanty, Akhila Maheswari, Mohan, and Prabhakaran, Deivasigamani
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Titanium ,Enrofloxacin ,Spectrometry, Mass, Electrospray Ionization ,Photolysis ,Light ,Photoelectron Spectroscopy ,Hydrogen-Ion Concentration ,Ytterbium ,Catalysis ,Chromatography, High Pressure Liquid ,Tungsten ,Water Pollutants, Chemical ,Nanocomposites - Abstract
In this work, we report on the synthesis of a new-age reusable visible-light photocatalyst using a heterojunction nanocomposite of W
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- 2020
8. Solid-state ion recognition strategy using 2D hexagonal mesophase silica monolithic platform: a smart two-in-one approach for rapid and selective sensing of Cd2+ and Hg2+ ions
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Akhila Maheswari Mohan, Naveen Kumar Sompalli, Sivaraman Nagarajan, C.V.S. Brahmananda Rao, Aswanidevi Kongasseri, Varad A. Modak, Ankita Mohanty, and Prabhakaran Deivasigamani
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Detection limit ,Materials science ,Kinetics ,Analytical chemistry ,Nanochemistry ,Mesophase ,02 engineering and technology ,Mesoporous silica ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Analytical Chemistry ,X-ray photoelectron spectroscopy ,Elemental analysis ,0210 nano-technology ,Mesoporous material - Abstract
The possibility of a multifunctional and reversible solid-state colorimetric sensor is described for the identification and quantification of ultra-trace Cd2+ and Hg2+ ions, using a honeycomb-structured mesoporous silica monolith conjoined with an indigenous chromoionophoric probe, i.e., 4-hexyl-6-((5-mercapto-1,3,4-thiadiazol-2-yl)diazenyl)benzene-1,3-diol (HMTAR). The amphiphilic probe is characterized using NMR, FT-IR, HR-MS, and CHNS elemental analysis. The structural and surface properties of the monolithic template have been characterized using p-XRD, XPS, TEM-SAED, SEM-EDAX, FT-IR, TG-DTA, and N2 isotherm analysis. The unique structural features and distinct analytical properties of the solid-state sensor proffer a strong response in selectively signaling the target analytes. The probe (HMTAR) exhibits a 1:1 stoichiometric binding ratio with the target ions (Cd2+ & Hg2+), with a visual color change from pale orange to dark red for Cd2+ (525 nm, λmax), and to purple for Hg2+ (530 nm, λmax), respectively, in the pH range 7.0–8.0. The influence of various analytical criteria such as pH, temperature, response kinetics, critical probe concentration, sensor quantity, matrix tolerance, linear response range, reusability, the limit of detection (LOD), and quantification (LOQ) has been investigated to validate the sensor performance. The proposed method displays a linear signal response in the concentration range 5–100 μg/L, with a LOD value of 2.67 and 2.90 μg/L, for Cd2+ and Hg2+, respectively. The real-world efficacy of the sensor material has been tested with real and synthetic water samples with a significant recovery value of ≥ 99.2%, to authenticate its data reliability and reproducibility (RSD ≤ 3.53%).
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- 2020
9. Solid-state ion recognition strategy using 2D hexagonal mesophase silica monolithic platform: a smart two-in-one approach for rapid and selective sensing of Cd
- Author
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Aswanidevi, Kongasseri, Naveen Kumar, Sompalli, Varad A, Modak, Ankita, Mohanty, Sivaraman, Nagarajan, C V S Brahmananda, Rao, Prabhakaran, Deivasigamani, and Akhila Maheswari, Mohan
- Abstract
The possibility of a multifunctional and reversible solid-state colorimetric sensor is described for the identification and quantification of ultra-trace Cd
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- 2020
10. Probe decorated porous silica and polymer monoliths as solid-state optical sensors and preconcentrators for the selective and fast recognition of ultra-trace arsenic ions
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C.V.S. Brahmmananda Rao, Akhila Maheswari Mohan, Prabhakaran Deivasigamani, Varad A. Modak, Naveen Kumar Sompalli, Satheesh Kuppusamy, and Sivaraman Nagarajan
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Ions ,chemistry.chemical_classification ,Detection limit ,geography ,Analyte ,Environmental Engineering ,geography.geographical_feature_category ,Materials science ,Polymers ,Health, Toxicology and Mutagenesis ,Analytical chemistry ,Polymer ,Silicon Dioxide ,Pollution ,Arsenic ,Template ,X-ray photoelectron spectroscopy ,chemistry ,Spectroscopy, Fourier Transform Infrared ,Environmental Chemistry ,Monolith ,Porosity ,Mesoporous material ,Waste Management and Disposal - Abstract
In this work, we manifested a new approach in designing solid-state colorimetric sensors for the selective optical sensing of As3+. The sensor fabrication is modulated using, (i) a cubic mesopores of ordered silica monolith, and (ii) a bimodal macro-/meso-porous polymer monolith, as hosting templates that are immobilized with a tailor-made chromoionophoric probe (DFBEP). The surface morphology and structural dimensions of the monolith templates and the sensor materials are characterized using p-XRD, XPS, FE-SEM-EDAX, HR-TEM-SAED, FT-IR, TGA, and BET/BJH analysis. The sensing components such as pH, probe content, sensor dosage, kinetics, temperature, analyte concentration, linear response range, selectivity, and sensitivity are optimized to arrive at the best sensing conditions. The silica and polymer-based monolithic sensors show a linear spectral response in the concentration range of 2–300 and 2–200 ppb, with a detection limit of 0.87 and 0.75 ppb for As3+, respectively. The real-time ion-monitoring propensity of the sensors is tested with spiked synthetic and real water samples, with a recovery efficiency of ≥99.1% (RSD ≤1.57%). The sensors act as both naked-eye optical sensors and preconcentrators, with a response time of ≤2.5 min. The molecular and photophysical properties of the DFBEP-As3+ complex are studied by TD-DFT calculations, using the B3LYP/6–31G (d,p) method.
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- 2022
11. Heterojunction Cr2O3-Ag2O nanocomposite decorated porous polymer monoliths a new class of visible light fast responsive heterogeneous photocatalysts for pollutant clean-up
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Naveen Kumar Sompalli, Ankita Mohanty, Akhila Maheswari Mohan, and Prabhakaran Deivasigamani
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chemistry.chemical_classification ,geography ,geography.geographical_feature_category ,Materials science ,Nanocomposite ,Dopant ,Process Chemistry and Technology ,02 engineering and technology ,Polymer ,010501 environmental sciences ,021001 nanoscience & nanotechnology ,01 natural sciences ,Pollution ,X-ray photoelectron spectroscopy ,Chemical engineering ,Polymerization ,chemistry ,Photocatalysis ,Chemical Engineering (miscellaneous) ,Monolith ,0210 nano-technology ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Visible spectrum - Abstract
We report a unique Cr2O3-Ag2O nanocomposite that is homogeneously dispersed on a polymer monolith by solvothermal assisted polymerization method. The surface morphology and structural features of the visible light responsive photocatalyst is characterized using FE-SEM-EDAX, HR-TEM-SAED, p-XRD, XPS, PLS, FT-IR, UV-Vis-DRS, TGA, BET/BJH and PEC measurements. The characterization data reveals a voluminous macro-/meso-porous monolithic framework with superior surface properties that promotes photocatalytic activity through the uniformly dispersed Cr2O3-Ag2O nanocomposites. Electrochemical and spectroscopic studies reveal a lower recombination rate of the photogenerated charges for (60:40) Cr2O3-Ag2O nanocomposite, with an energy band gap of 2.35 eV. A comprehensive analysis of physicochemical parameters such as solution pH, catalyst quantity, dopant stoichiometry, dye concentration, electron acceptors, illumination time and intensity reveals superior photocatalytic efficacy in dissipating organic dye (Reactive Brown-10) pollutants, within 1 h of visible light (300 W/cm2) irradiation. The high surface area of the Cr2O3-Ag2O dispersed polymer monolith facilitates effectual dissipation of massive organic pollutants using a nominal photocatalyst quantity (100 mg), in the optimized pH range of 3.0–4.0. The monolithic photocatalyst ensures easy transport of pollutants to the photoactive sites, thereby ensuring ≥ 99% dye degradation, through superoxide anion radical species. The proposed photocatalyst is environmentally benign with excellent durability and reusability.
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- 2021
12. Solid-state optical sensing of ultra-trace Hg2+ ions using chromoionophoric probe anchored silica monolithic architectures
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Akhila Maheswari Mohan, Naveen Kumar Sompalli, Brahmmananda C.V.S. Rao, Prabhakaran Deivasigamani, Aswanidevi Kongasseri, and Sivaraman Nagarajan
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Detection limit ,Materials science ,Fabrication ,Metals and Alloys ,02 engineering and technology ,Mesoporous silica ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Matrix (chemical analysis) ,X-ray photoelectron spectroscopy ,Chemical engineering ,Materials Chemistry ,Molecule ,Electrical and Electronic Engineering ,Selected area diffraction ,0210 nano-technology ,Mesoporous material ,Instrumentation - Abstract
In this work, we manifest the fabrication of a simple, portable, and benign solid-state sensor for the quantification of toxic Hg2+ ions through ocular colorimetric sensing. The sensor fabrication is modulated through sol-gel process using two different block-polymer surfactants (PEO and F108) for the formation of mesoporous silica monolithic designs that are immobilized with tailor-made probe molecules. The crack-free porous silica monoliths are structurally engineered to form, (i) highly ordered honey-combed 3D cubic, and (ii) disoriented worm-like mesopore structures that facilitates homogeneous probe anchoring through constrained spatial orientations for the selective detection of ultra-trace Hg2+ ions. The monolithic sensor materials are characterized by FE-SEM, HR-TEM, p-XRD, SAED, EDAX, XPS, FT-IR, TGA, and N2 isotherm analysis. For ensuring unambiguous ion-sensing, analytical parameters such as solution pH, temperature, kinetics, probe concentration, sensor quantity, linear signal response, matrix tolerance, the limit of detection (LD), and quantification (LQ) are optimized. The LD and LQ values for probe anchored PEO-MSM based sensor are 0.61 & 2.05 ppb and for probe anchored F108-MSM based sensor are 0.22 & 0.72 ppb, respectively, in the corresponding linear response range of 0−100 ppb and 0−50 ppb of Hg2+, which has been validated by real-time analysis of natural water samples.
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- 2020
13. Mesoporous monolith designs of mixed phased titania codoped Sm3+/Er3+ composites: A super responsive visible light photocatalysts for organic pollutant clean-up
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Sohini Syamal De, Ashapurna Das, Prabhakaran Deivasigamani, Akhila Maheswari Mohan, and Naveen Kumar Sompalli
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Anatase ,Materials science ,Dopant ,medicine.diagnostic_test ,General Physics and Astronomy ,02 engineering and technology ,Surfaces and Interfaces ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Light intensity ,Chemical engineering ,Spectrophotometry ,Photocatalysis ,medicine ,0210 nano-technology ,Mesoporous material ,Visible spectrum ,BET theory - Abstract
In this work, we report on the synthesis of a new class photocatalyst material of Sm3+/Er3+ codoped TiO2 mesoporous monolithic network using a surfactant mediated microemulsion micro-phased sol-gel technique. The crack-free monoliths were characterized using, XRD, SEM-EDX, TEM-SAED, XPS, UV–Vis-DRS, PLS, TG-DTA, FT-IR, Raman, and BET analysis. The study revealed that the stoichiometric mixed dopant composite of Sm3+ and Er3+ with TiO2 exhibited excellent visible light photocatalytic activity. The XRD data showed that the Sm3+/Er3+ codoped TiO2 monolith exhibited a mixed phase ((75%) anatase - (25%) rutile) crystallinity, with well-defined mesopores. The TEM and SEM images confirmed the existence of a uniform pattern of highly ordered worm-like structure of mesoporous design, which corroborates with the absorption-desorption isotherm pattern. The XPS spectra confirmed the trivalent state of the Sm-Er composite, and their surface dispersion onto the Ti-O-Ti lattice. The UV–Vis-DRS analysis showed an energy band gap value of 3.26, 3.02, and 2.80 eV, for undoped, (3.0 mol%) Sm3+ doped, and (0.6 mol%) Er3+/(3.0 mol%) Sm3+ codoped TiO2 monoliths, respectively, which reflected on the visible light absorption characteristics of the Sm3+/Er3+ doped TiO2 composite. The photo-luminescence emission spectra showed that the (0.6 mol%) Er3+/(3.0 mol%) Sm3+ composite as the best performing visible light photocatalyst. The efficacy of the proposed class of photocatalytic materials was investigated for textile dye degradation using Acid Blue 113, as the model organic dye pollutant, which was dissipated within 30 min of visible light irradiation. For the superior performance of the photocatalyst, the operational parameters such as, solution pH, dopant/co-dopant stoichiometry, photocatalyst quantity, dye concentration, light intensity, photooxidizers, degradation kinetics, reusability, etc., were studied and optimized. The dye degradation was monitored using UV–Visible spectrophotometry, and the extent of dye mineralization was confirmed by TOC analysis.
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- 2020
14. Assessment of tailor-made mesoporous metal doped TiO2 monolithic framework as fast responsive visible light photocatalysts for environmental remediation applications
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Naveen Kumar Sompalli, Akhila Maheswari Mohan, Prabhakaran Deivasigamani, and T.V.L. Thejaswini
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geography ,geography.geographical_feature_category ,Materials science ,Diffuse reflectance infrared fourier transform ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Inorganic Chemistry ,Light intensity ,X-ray photoelectron spectroscopy ,Chemical engineering ,Materials Chemistry ,Photocatalysis ,Physical and Theoretical Chemistry ,Fourier transform infrared spectroscopy ,Monolith ,Selected area diffraction ,0210 nano-technology ,Mesoporous material - Abstract
The article reports on the facile one-pot synthesis of a structurally organized mesoporous crack-free monolithic network of Bi3+ doped TiO2, as a visible light workable photocatalyst materials for environmental remediation. The monolithic photocatalyst efficacy has been investigated using Acid Blue 113, an organic textile dye as the model organic pollutant, thereby rooting its decontamination potential towards dye effluents from textile and dye industries. The controlled stoichiometric surface doping of Bi3+ with the continuous framework of the TiO2 monolithic material not only ensures visible light-induced photocatalysis but also high quantum yield upon light impingement thereby leading a rapid generation of reactive radical species. The monolith structural properties and its morphology are characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), selected area electron diffraction (SAED), energy dispersive X-ray spectrometry (EDAX), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PLS), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and N2 adsorption-desorption isotherm analysis. The anatase phase TiO2 monolith offers a high surface area that promotes the voluminous generation of photo-induced e−/h+ pairs that proceed towards the formation of reactive radical intermediates for the fast dissipation of pollutants. To valid the efficiency and effectiveness of the Bi3+ doped TiO2 monolith photocatalyst, a comprehensive study on the physicochemical parameters such as solution pH, dopant stoichiometry, photocatalyst quantity, light intensity, photosensitizers, and reusability, proves crucial. The results reveal that under optimized conditions, the photocatalyst has an ultra-fast response time of ≤0.2 h for complete mineralization, with 0.06 g of monolithic photocatalysts that are recoverable and reusable.
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- 2019
15. Tailor-made porous polymer and silica monolithic designs as probe anchoring templates for the solid-state naked eye sensing and preconcentration of hexavalent chromium
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Naveen Kumar Sompalli, Akhila Maheswari Mohan, C.V.S. Brahmananda Rao, Prabhakaran Deivasigamani, and Sivaraman Nagarajan
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Materials science ,Fabrication ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,chemistry.chemical_compound ,Amphiphile ,Materials Chemistry ,Electrical and Electronic Engineering ,Hexavalent chromium ,Porosity ,Instrumentation ,chemistry.chemical_classification ,Metals and Alloys ,Polymer ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Characterization (materials science) ,Template ,chemistry ,Naked eye ,0210 nano-technology - Abstract
We present a facile approach towards the fabrication of solid state optical sensors for the naked-eye sensing of carcinogenic Cr6+ ions, using porous polymer and silica monoliths, as probe anchoring templates. The monoliths proffer superior structural properties of high surface area and capacious pore size for the uniform and voluminous probe anchoring. The surface morphology and structural features of the monoliths are analyzed using various surface and structural characterization techniques. The solid-state optical sensors are concocted by the transmogrification of monoliths through impregnation of an amphipathic chromoionophore i.e., 1,5-bis-(4-butylphenyl)carbazone (BBPC), as the ion-sensing probe. The sensors offer long-term stability and rapid response kinetics (
- Published
- 2019
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