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1. WATER-BASED ACRYLIC POLYMER/ZnO–Ag NANOCOMPOSITE COATING FOR ANTIBACTERIAL APPLICATION

Author

TIEN VIET VU, MOHAMMAD TABISH, SEHRISH IBRAHIM, MAI HUONG PHAM THI, THE HUU NGUYEN, CUONG BUI VAN, THIEN VUONG NGUYEN, LAN PHAM THI, DAI LAM TRAN, TUAN ANH NGUYEN, and GHULAM YASIN

Subjects
Materials Chemistry, Surfaces and Interfaces, Condensed Matter Physics, Surfaces, Coatings and Films
Abstract

The goal of this work is to study the antibacterial activity of acrylic polymer/ZnO–Ag nanocomposite coating. First, in the presence of UV light ([Formula: see text] nm), Ag nanoparticles (NPs; derived from AgNO3 precursor) were photoreduced and deposited on the surface of nano-ZnO. Field emission scanning electron microscope (FE-SEM) images indicated that the AgNPs (5–15 nm) were deposited on the surface of nano-ZnO (20–40 nm). These ZnO–Ag nanohybrids (0.1–0.2 wt.%) were incorporated into the acrylic polymer matrix using ultrasonication to form the nanocomposite coating ([Formula: see text] [Formula: see text]m thick). Nano-ZnO hybridized with AgNPs resulted in a decrease in the energy gap ([Formula: see text] of ZnO from 3.2 eV to 2.7 eV, as observed by diffused reflectance UV–Vis spectrum analysis. The abrasion resistance test indicated that the incorporation of hybrid NPs enhanced the abrasion resistance of the polymer coating (from 81 to 125 l/mil). Moreover, the polymer nanocomposite coating showed high antibacterial efficacy against [Formula: see text]. coli and [Formula: see text]. aureus in antibacterial tests and achieved 1.8 and 1.2 log after 24 h, respectively. These findings endorse that the ZnO–Ag nanohybrid-based water-borne nanocomposite coatings offer exceptional antibacterial efficiency and would be promising in this application.

Published
2022
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2. Defective/graphitic synergy in a heteroatom-interlinked-triggered metal-free electrocatalyst for high-performance rechargeable zinc–air batteries

Author

Wei Zhao, Sehrish Ibrahim, Hu Xu, Yassine Slimani, Mohammad Tabish, Tuan Anh Nguyen, Rashid Iqbal, Shumaila Ibraheem, Anuj Kumar, Ghulam Yasin, and Sajjad Ali

Subjects
Materials science, Renewable Energy, Sustainability and the Environment, Heteroatom, Oxygen evolution, General Chemistry, Overpotential, Electrochemistry, Electrocatalyst, Energy storage, Catalysis, chemistry.chemical_compound, Chemical engineering, chemistry, General Materials Science, Bifunctional
Abstract

Motivated by the increased demand for energy storage technologies with maximum power density and safety, zinc–air batteries have drawn extensive attention. However, developing a competent and robust bifunctional oxygen reduction and oxygen evolution reaction (ORR/OER) catalyst and studying the underlying active-site mechanisms with the aim of optimizing the electrochemical process remains challenging. In this work, defective/graphitic synergy in heteroatom-interlinked-triggered asphaltene (D/G-HASP) is explored via Raman spectroscopy, density functional theory (DFT), and other characterization approaches, in which reactions involving the oxygen-containing intermediates on the carbon substrate can be accelerated by the electron deficit triggered by heteroatoms, thus enhancing the oxygen reaction performance. As estimated, D/G-HASP reveals a superior half-wave potential (E1/2 = 840 mV) and the lowest overpotential (η10 = 310 mV) towards the ORR and OER compared to its other counterparts. Remarkably, zinc–air batteries primed with such an air-electrode show outstanding reversibility and stability. This effort hence delivers insightful understanding of the synergistic reaction principles of heteroatom-interlinked-triggering nanomaterials when used in zinc–air batteries.

Published
2021
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5. Contributors

Author

Temitope Olabisi Abodunrin, Abel G. Achumi, Kayode Adesina Adegoke, Rhoda Oyeladun Adegoke, Waqar Ahmed, Saira Ajmal, Solomon Oluwaseun Akinnawo, Miroslav Almáši, Christina Angelara, K. Archana, Nikolaos Argirusis, Christos Argirusis, Satyajeet Arya, A. Asif, Hafiz Muhammad Asif, Pierre-Henri Aubert, Figen Balo, Deborah Temitope Bankole, Hemanth Kumar Beere, Olugbenga Solomon Bello, Kaushalya Bhakar, Dan J.L. Brett, Xian-He Bu, Vikas Chaudhary, Aibing Chen, Mingren Cheng, Akash Deep, Godshelp Osas Egharevba, Fehim Fındık, Vellaichamy Ganesan, Debasis Ghosh, Mohammad Reza Golobostanfard, Ram K. Gupta, Rupali Gupta, Payam Hayati, Guanjie He, Shumaila Ibraheem, Sehrish Ibrahim, Tenzin Ingsel, Donpaul Jose, Eirini Kanellou, Liqun Kang, Antonis Karantonis, Muhammad Ali Khan, Subratanath Koner, Lingjun Kong, Anuj Kumar, Dinesh Kumar, Parveen Kumar, Praveen Lakhera, Randy W. Larsen, Hugo Lavillunière, Yiyang Liu, Jianqiang Liu, Xinying Liu, Xu Lu, Zachary L. Magnuson, Ghodrat Mahmoudi, S. Maitra, Nobanathi Wendy Maxakato, Jacob M. Mayers, Maria Mechili, R. Mitra, Sanna Kotrappanavar Nataraj, T.K. Nath, Meena Nemiwal, Tuan Anh Nguyen, Solomon Oluwole Oladeji, Adetola Christianah Oladipo, Kabir O. Otun, Demet Ozer, Mala Pamei, Ying Pan, Pavlos K. Pandis, Thuan-Nguyen Pham-Truong, Erfan Pourshaban, Rangaswamy Puttaswamy, Amrit Puzari, Naresh A. Rajpurohit, Ramasamy Ramaraj, Isha Saini, Ahmed M. Salama, Zainab Shakoor, Paria Sharafi-Badr, Paul R. Shearing, Vinamrita Singh, Georgia Sourkouni, Lutfu S. Sua, R. Sujith, Mohammad Tabish, Soner Çakar, Ege Tini Tunca, Mahmut Özacar, Christos Vaitsis, Cédric Vancaeyzeele, Morena S. Xaba, Dharmendra Kumar Yadav, Prahlad Yadav, Ghulam Yasin, Luyi Zhou, Jian Zhu, Shuang Zong, and Antonis A. Zorpas

Published
2022
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9. Contributors

Author

Mohd Arif Agam, Saira Ajmal, Hafiz Haider Ali, Sajjad Ali, Muhammad Arif, Umair Azhar, Ajit Behera, Kaushik Choudhury, Felipe M. de Souza, Mostafa El-Shafie, Ali Farmani, Yi Feng, Hadis Foladi, Ram K. Gupta, Ume Habiba, Syed Zuhaib Rizvi Haider, Tomáš Homola, Shumaila Ibraheem, Sehrish Ibrahim, Tenzin Ingsel, Muhammad Hasnain Jameel, Shinji Kambara, Muhammad Abubaker Khan, Taj Muhammad Khan, Areeba Khurshid, Ajai Kumar, Anuj Kumar, James G. Lunney, Muhammad Asim Mushtaq, Tuan Anh Nguyen, Jan Pospisil, Luchun Qiu, Muhammad Sufi bin Roslan, Ali Saad, Muhammad Sagir, Priyatosh Sahoo, Khan Abdul Sammed, Duo Shao, Rajesh Kumar Singh, Rina Singh, Atul Srivastava, Mohammad Tabish, Muhammad Bilal Tahir, Weidong Wen, Xianzhi Yao, Ghulam Yasin, and Xin-Yao Yu

Published
2022
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12. Silicon-based nanomaterials for energy storage

Author

Ghulam Yasin, Adil Saleem, Sehrish Ibrahim, Shumaila Ibraheem, Tuan Anh Nguyen, and Rashid Iqbal

Subjects
Supercapacitor, Silicon, chemistry, business.industry, Fossil fuel, chemistry.chemical_element, Nanotechnology, business, Commercialization, Solar power, Energy storage, Anode, Nanomaterials
Abstract

Nowadays, it is generally accepted that rising concerns over environmental challenges and deviant climate changes are caused by the profuse utilization of conventional fossil fuels. The use of renewable energy systems, such as wind and solar power, is greatly considered to be one of the most significant replacements to enable more fast societal development and sustainable economic growth. For this purpose, sustainable and promising electrochemical energy storage technologies (ESTs), such as batteries and supercapacitors, can contribute a significantly vital role. Lithium-ion batteries (LIBs) are the only commercially available batteries that are up to date, and their development was acknowledged through the 2019 Nobel Prize in chemistry. To further boost the power and energy densities of LIBs, silicon nanomaterial-based anodes have been widely investigated owing to their low operation potential, high storage capacity, high abundance, and environmentally benign nature. However, the formation of unstable solid–electrolyte interphase (SEI) layers and the large volumetric changes during the discharge/charge processes are the key challenges for the commercialization of these anode materials. Here, the most recent development in the applications of silicon-based nanomaterials in LIBs and supercapacitors is summarized. A brief account on the electrochemical performance of silicon-based hybrid nanomaterials constructed by various strategies is systematically reviewed.

Published
2022
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13. List of contributors

Author

Sandeep Arya, Soumen Basu, Gaurang J. Bhatt, Sabrina A. Camacho, L. Castañeda, Narendhar Chandrasekar, Jih-Hsing Chang, Xinyi Chen, Jingqin Cui, Pradeep T. Deota, Ali Farmani, Homa Farmani, Rudy Guicheteau, Ram K. Gupta, Vinay Gupta, Mariana Gutierrez, J.J. Hernández-Sarria, Shumaila Ibraheem, Sehrish Ibrahim, Tenzin Ingsel, Rashid Iqbal, Raphael Janot, Adem Kocyigit, Mohanraj Kumar, Deng Long, J. López-Medina, Nicolas Louvain, Mohamed F. Mady, J.R. Mejía-Salazar, Runwei Mo, Yasser Mahmoud A. Mohamed, Laure Monconduit, M. Montañez-Molina, Mathieu Morcrette, F. Muñoz-Muñoz, Josino Villela S. Neto, Tuan Anh Nguyen, O.N. Oliveira, Yohan Oudart, Gautam M. Patel, Jean-Francois Perrin, null Pratibha, Jaspreet Kaur Rajput, Adil Saleem, Asha Sharma, Surbhi Sharma, Shan-Yi Shen, Mohd. Shkir, Anoop Singh, H. Tiznado, and Ghulam Yasin

Published
2022
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15. Contributors

Author

Sajid Bashir, Diego Cazorla-Amorós, Sai Raghuveer Chava, Praveen Kumar Cheekatamarla, Fan Chen, Kazunari Domen, Yu-Chuan Hsu, Shumaila Ibraheem, Sehrish Ibrahim, Demetrios Kouretas, Maria Kourti, Andrei Kulikovsky, Anuj Kumar, Yasutaka Kuwahara, Ioannis D. Kyriazis, Hengyu Kengsley Lin, Lihua Lin, Jingbo Louise Liu, Kohsuke Mori, Muhammad Asim Mushtaq, Swarnava Nandy, Miriam Navlani-García, Rajesh Pathak, Tatyana Reshetenko, David Salinas-Torres, Vishal Sharma, Som Shrestha, Zoi Skaperda, Fotios Tekos, Periklis Vardakas, Kun-Yu Wang, Hiromi Yamashita, Tian-Hao Yan, Zhentao Yang, Ghulam Yasin, and Jiaqi Zhang

Published
2022
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17. List of contributors

Author

Paa Kwasi Adusei, Guillermo Alvial-Hein, Subramania Angaiah, Praveen Balaji T, Madhuri A. Bhakare, Shiva Bhardwaj, Vikram K. Bharti, Mark J. Biggs, Mahesh P. Bondarde, Silvie Brožová, Sony K. Cherian, Soumyadip Choudhury, Pratik S. Dhumal, K. Diwakar, Yanbo Fang, Fariborz Faraji, Zhanghua Fu, Mayur M. Gaikwad, Georg Garnweitner, Josep M. Guerrero, Ram K. Gupta, Wei-Qiang Han, Bin He, Yu-Yun Hsieh, Cheng Hu, Xia Huang, Shumaila Ibraheem, Sehrish Ibrahim, Rini Jain, Annelise Jean-Fulcrand, B. Jeevanantham, Eun Ju Jeon, Kavitha Joseph, Dustin K. James, Sathya Narayan Kanakaraj, Schahrous Karimpour, Anupama B. Kaul, Daljit Kaur, Misagh Khanlarian, Mahnoosh Khosravifar, Vamsi Krishna Reddy Kondapalli, Gabriela Kratošová, Anuj Kumar, Zhen Li, Xuting Li, Ruiping Liu, Kshama D. Lokhande, Qiongqiong Lu, Bin Luo, Harshit Mahandra, Felipe Martins de Souza, Gražyna Simha Martynková, Dheeraj Kumar Maurya, Runwei Mo, Noor Muhammad, Tuan Anh Nguyen, Wei Ni, Chan-Jin Park, Anil D. Pathak, G. Radhika, P. Rajkumar, Masud Rana, Melina Roshanfar, Ali Saad, Sajjan Kumar Sathish, Vesselin Shanov, Hadi Sharifidarabad, Mohin Sharma, Chandra S. Sharma, Ling-Ying Shi, M.K. Shobana, Manmeet Singh, Sharanjit Singh, Ovender Singh, M. Sivakumar, Ji Soo Sohn, Surajit Some, R. Subadevi, James M. Tour, Rodrigo V. Salvatierra, Rakesh Verma, Duc-Luong Vu, Jianli Wang, Shunli Wang, Xinyu Wang, Guang Xia, Lili Xia, Yanxin Xie, Jin-Lin Yang, Ghulam Yasin, Jiajia Ye, Chunmei Yu, Guangqi Zhang, and Zhiqiang Zheng

Published
2022
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20. Defects-engineered tailoring of tri-doped interlinked metal-free bifunctional catalyst with lower gibbs free energy of OER/HER intermediates for overall water splitting

Author

Anuj Kumar, Hu Xu, Sehrish Ibrahim, Shumaila Ibraheem, Wei Zhao, M.A. Mushtaq, Ghulam Yasin, Mohammad Tabish, M. Arif, A. Saad, Sajjad Ali, and Rashid Iqbal

Subjects
Materials science, Polymers and Plastics, Heteroatom, Oxygen evolution, Overpotential, Catalysis, Electronic, Optical and Magnetic Materials, Bifunctional catalyst, Gibbs free energy, Biomaterials, symbols.namesake, chemistry.chemical_compound, Colloid and Surface Chemistry, chemistry, Chemical engineering, Materials Chemistry, symbols, Water splitting, Bifunctional
Abstract

Controllable tailoring of metal-free/carbon-based nanostructures tends an encouraging way to enhance the bifunctional activity of electrodes, but a great challenge owing to the sluggish kinetics of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Herein, a facile tempted-defects assisted fractionation strategy is presented to synthesize N, S, and O tri-doped metal-free catalyst (DE-TDAP). Due to this effective tempted-defects and heteroatoms interlinking in DE-TDAP, it delivers the lowest overpotential toward both the OER (346 mV) and HER (154 mV) at 10 mA cm−2. Remarkably, the DE-TDAP-electrode carries only a cell voltage of 1.81 V at 10 mA cm−2 for overall water splitting and long-term stability. Considerably, the density functional theory (DFT) calculation exposes that the tailored-defects in tri-doped interlinking could enhance bifunctional catalytic performance devising from lower Gibbs free energy of OER/HER intermediates on active sites. This struggle henceforth provides a perceptive understanding of the synergetic principles of heteroatom-interlinking-tailoring nanostructures in water splitting.

Published
2022
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21. Plasma Biomarkers: Potent Screeners of Alzheimer's Disease

Author

Abeer Khan, Sehrish Ibrahim, Shamsa Mubeen, Bisma Meer, and Muhammad Naveed

Subjects
business.industry, General Neuroscience, Neurological disorder, Disease, medicine.disease, Plasma biomarkers, Proteomics, Bioinformatics, Brain Cell, Biomarker (cell), Psychiatry and Mental health, Clinical Psychology, Downregulation and upregulation, Alzheimer Disease, Medicine, Humans, Geriatrics and Gerontology, Cognitive decline, business, Biomarkers
Abstract

Alzheimer’s disease (AD), a neurological disorder, is as a complex chronic disease of brain cell death that usher to cognitive decline and loss of memory. Its prevalence differs according to risk factors associated with it and necropsy performs vital role in its definite diagnosis. The stages of AD vary from preclinical to severe that proceeds to death of patient with no availability of treatment. Biomarker may be a biochemical change that can be recognized by different emerging technologies such as proteomics and metabolomics. Plasma biomarkers, 5-protein classifiers, are readily being used for the diagnosis of AD and can also predict its progression with a great accuracy, specificity, and sensitivity. In this review, upregulation or downregulation of few plasma proteins in patients with AD has also been discussed, when juxtaposed with control, and thus serves as potent biomarker in the diagnosis of AD.

Published
2019

22. Water-Borne ZnO/Acrylic Nanocoating: Fabrication, Characterization, and Properties

Author

Sehrish Ibrahim, Mohammad Tabish, Ram K. Gupta, Thi My Linh Dang, Ghulam Yasin, Tien Viet Vu, Thi Huong Thuy Hoang, Thien Vuong Nguyen, and Tuan Anh Nguyen

Subjects
Fabrication, Materials science, Polymers and Plastics, Abrasion (mechanical), Sonication, Composite number, nanocomposite coating, engineering.material, Article, lcsh:QD241-441, micro‑ZnO, chemistry.chemical_compound, nano‑ZnO, lcsh:Organic chemistry, Coating, weathering aging, Nanocomposite, self‑cleaning, General Chemistry, acrylic polymer, photocatalytic, chemistry, Chemical engineering, Photocatalysis, engineering, micro-ZnO, nano-ZnO, self-cleaning, Methylene blue
Abstract

This work aims to explore how ZnO nanoparticles enhance the mechanical, photoaging, and self cleaning properties of water borne acrylic coating. Micro/nano ZnO particles (at 2 wt.% of total solid resin) were dispersed into the acrylic polymer matrices using ultrasonication to understand the effect of the size of the coating properties. The effect of ZnO particles on the properties of composite coatings (25 µm of thick) have been evaluated through various tests, such as abrasion measurement, ultraviolet/condensation (UV/CON) weathering aging, and methylene blue self cleaning. Experimental data indicated that the incorporation of ZnO particles enhanced both abrasion resistance and methylene blue removal efficiency of the water borne acrylic coatings, with nano ZnO particles being the best. However, the weathering degradation of nanocomposite coatings was more severe as compared to the coating with micro ZnO (at the same ZnO content).

Published
2021
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