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181 results on '"Torad, Nagy L."'

12. Hierarchical bimetallic metal-organic frameworks with controllable assembling sub-units and interior architectures for enhanced ammonia detection

Author

Chowdhury, Silvia, primary, Torad, Nagy L., additional, Godara, Manjeet, additional, El-Amir, Ahmed A.M., additional, Gumilar, Gilang, additional, Ashok, Aditya, additional, Rezaul Karim, Mohammad, additional, Abdullah Alnaser, Ibrahim, additional, Chaikittisilp, Watcharop, additional, Ray, Nirat, additional, Yamauchi, Yusuke, additional, and Valentino Kaneti, Yusuf, additional

Published
2023
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25. Template- and Etching-Free Fabrication of Hollow Two-Dimensional Bimetallic Metal-Organic Framework Hexagonal Nanoplates for Ammonia Sensing

Author

Chowdhury, Silvia, primary, Torad, Nagy L., additional, Ashok, Aditya, additional, Gumilar, Gilang, additional, Chaikittisilp, Watcharop, additional, Xin, Ruijing, additional, Cheng, Ping, additional, HOQUE, MD. IKRAM UL, additional, Wahab, Md Abdul, additional, Karim, Mohammad Rezaul, additional, Yuliarto, Brian, additional, Hossain, Md Shahriar, additional, Yamauchi, Yusuke, additional, and Kaneti, Yusuf Valentino, additional

Published
2022
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29. Phenyl-Modified Carbon Nitride Quantum Nanoflakes for Ultra-Highly Selective Sensing of Formic Acid: A Combined Experimental by QCM and Density Functional Theory Study

Author

Torad, Nagy L., primary, El-Hosainy, Hamza, additional, Esmat, Mohamed, additional, El-Kelany, Khaled E., additional, Tahawy, Rafat, additional, Na, Jongbeom, additional, Ide, Yusuke, additional, Fukata, Naoki, additional, Chaikittisilp, Watcharop, additional, Hill, Jonathan P., additional, Zhang, Xiaogang, additional, El-Kemary, Maged, additional, and Yamauchi, Yusuke, additional

Published
2021
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35. Assembling well-arranged covalent organic frameworks on MOF-derived graphitic carbon for remarkable formaldehyde sensing

Author

Zhang, Shuaihua, primary, Yang, Qian, additional, Xu, Xingtao, additional, Liu, Xiaohong, additional, Li, Qian, additional, Guo, Jingru, additional, Torad, Nagy L., additional, Alshehri, Saad M., additional, Ahamad, Tansir, additional, Hossain, Md. Shahriar A., additional, Kaneti, Yusuf Valentino, additional, and Yamauchi, Yusuke, additional

Published
2020
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36. Rational Design of Nanoporous MoS 2 /VS 2 Heteroarchitecture for Ultrahigh Performance Ammonia Sensors

Author

Zhang, Shuaihua, primary, Wang, Jiayu, additional, Torad, Nagy L., additional, Xia, Wei, additional, Aslam, Muhammad Aamir, additional, Kaneti, Yusuf Valentino, additional, Hou, Zhufeng, additional, Ding, Zejun, additional, Da, Bo, additional, Fatehmulla, Amanullah, additional, Aldhafiri, Abdullah M., additional, Farooq, Wazirzada Aslam, additional, Tang, Jing, additional, Bando, Yoshio, additional, and Yamauchi, Yusuke, additional

Published
2019
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39. A Facile Synthesis of Hematite Nanorods from Rice Starch and Their Application to Pb(II) Ions Removal

Author

Hoque, Md. Ikram Ul, primary, Yamauchi, Yusuke, additional, Naidu, Ravi, additional, Holze, Rudolf, additional, Saidur, Rahman, additional, Qu, Qunting, additional, Rahman, Mohammad Mahmudur, additional, Torad, Nagy L., additional, Hossain, Md. Shahriar A., additional, Kim, Minjun, additional, Kim, Jeonghun, additional, Ahmad, Syed Haseeb Ali, additional, Rehman, Ateeq Ur, additional, Firoz, Md. Shakhawat Hossain, additional, Luba, Ummayhanni, additional, Chowdhury, Shahriar, additional, and Chowdhury, Al‐Nakib, additional

Published
2019
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41. Rational Design of Nanoporous MoS2/VS2 Heteroarchitecture for Ultrahigh Performance Ammonia Sensors

Author

Zhang, Shuaihua, Wang, Jiayu, Torad, Nagy L, Xia, Wei, Aslam, Muhammad A, Kaneti, Yusuf Valentino, Hou, Zhufeng, Ding, Zejun, Da, Bo, Fatehmulla, Amanullah, Aldhafiri, Abdullah, Farooq, Wazirzada, Tang, Jing, Bando, Yoshio, Yamauchi, Yusuke, Zhang, Shuaihua, Wang, Jiayu, Torad, Nagy L, Xia, Wei, Aslam, Muhammad A, Kaneti, Yusuf Valentino, Hou, Zhufeng, Ding, Zejun, Da, Bo, Fatehmulla, Amanullah, Aldhafiri, Abdullah, Farooq, Wazirzada, Tang, Jing, Bando, Yoshio, and Yamauchi, Yusuke

Abstract

2D transition metal dichalcogenides (TMDs) have received widespread interest by virtue of their excellent electrical, optical, and electrochemical characteristics. Recent studies on TMDs have revealed their versatile utilization as electrocatalysts, supercapacitors, battery materials, and sensors, etc. In this study, MoS2 nanosheets are successfully assembled on the porous VS2 (P-VS2) scaffold to form a MoS2/VS2 heterostructure. Their gas-sensing features, such as sensitivity and selectivity, are investigated by using a quartz crystal microbalance (QCM) technique. The QCM results and density functional theory (DFT) calculations reveal the impressive affinity of the MoS2/VS2 heterostructure sensor toward ammonia with a higher adsorption uptake than the pristine MoS2 or P-VS2 sensor. Furthermore, the adsorption kinetics of the MoS2/VS2 heterostructure sensor toward ammonia follow the pseudo-first-order kinetics model. The excellent sensing features of the MoS2/VS2 heterostructure render it attractive for high-performance ammonia sensors in diverse applications.

Published
2019

46. Fabrication of asymmetric supercapacitors based on coordination polymer derived nanoporous materials

Author

Salunkhe, Rahul R, Zakaria, Mohamed B, Kamachi, Yuichiro, Alshehri, Saad M, Ahamad, Tansir, Torad, Nagy L, Dou, S X, Kim, Jung Ho, Yamauchi, Yusuke, Salunkhe, Rahul R, Zakaria, Mohamed B, Kamachi, Yuichiro, Alshehri, Saad M, Ahamad, Tansir, Torad, Nagy L, Dou, S X, Kim, Jung Ho, and Yamauchi, Yusuke

Abstract

Considerable efforts have been devoted to the synthesis and characterization of novel nanoporous materials because of their versatile applications, such as gas storage, catalysis, and energy storage applications. Controllable synthesis of coordination polymers (CPs) with two- and three-dimensional architectures has given impetus to the development of nanomaterials with many exciting properties and applications. Here, we focus on CP-derived nanoporous materials and study their electrochemical performance as electrode materials in supercapacitors. Nanoporous carbon is prepared by simple carbonization of zinc-containing zeolitic imidazolate framework (ZIF-8). On the other hand, nanoporous nickel oxide (NiO) is prepared by thermal treatment of cyano-bridged CPs. By using the above two electrodes, we fabricate a novel asymmetric supercapacitor. These CP-derived nanoporous materials exhibit excellent electrochemical performance with high specific energy and specific power, and excellent cycling stability.

Published
2015

49. Towards vaporized molecular discrimination: a quartz crystal microbalance (QCM) sensor system using cobalt-containing mesoporous graphitic carbon

Author

Tang, Jing, Torad, Nagy L, Salunkhe, Rahul R, Yoon, Jang-Hee, Hossain, Md Shahriar, Dou, S X, Kim, Jung Ho, Kimura, Tatsuo, Yamauchi, Yusuke, Tang, Jing, Torad, Nagy L, Salunkhe, Rahul R, Yoon, Jang-Hee, Hossain, Md Shahriar, Dou, S X, Kim, Jung Ho, Kimura, Tatsuo, and Yamauchi, Yusuke

Abstract

A recent study on nanoporous carbon based materials (J. Am. Chem. Soc. 2012, 134, 2864) showed that the presence of abundant graphitized sp2 carbon species in the frameworks led to higher affinity for aromatic hydrocarbons than their aliphatic analogues. Herein, improved understanding of the sensitive and selective detection of aromatic substances by using mesoporous carbon (MPC)-based materials, combined with a quartz crystal microbalance (QCM) sensor system, was obtained. MPCs were synthesized by direct carbonization of mesoporous polymers prepared from resol through a soft templating approach with Pluronic F127. The carbon-based frameworks can be graphitized through the addition of a cobalt source to the precursor solution, according to the catalytic activity of the cobalt nanoparticles formed during the carbonization process. From the Raman data, the degree of the graphitization was clearly increased by increasing the cobalt content and elevating the carbonization temperature. From a QCM study, it was proved that the highly graphitized MPCs exhibited a higher affinity for aromatic hydrocarbons than their aliphatic analogues. By increasing the degree of graphitization in the carbon-based pore walls, the MPCs showed both larger adsorption uptake and faster sensor response towards toxic benzene and toluene vapors.

Published
2014

50. Fabrication of symmetric supercapacitors based on MOF-derived nanoporous carbons

Author

Salunkhe, Rahul R, Kamachi, Yuichiro, Torad, Nagy L, Hwang, Soomin, Sun, Ziqi, Dou, S X, Kim, Jung Ho, Yamauchi, Yusuke, Salunkhe, Rahul R, Kamachi, Yuichiro, Torad, Nagy L, Hwang, Soomin, Sun, Ziqi, Dou, S X, Kim, Jung Ho, and Yamauchi, Yusuke

Abstract

Nanoporous carbon (NPC) materials with high specific surface area have attracted considerable attention for electrochemical energy storage applications. In the present work, we have designed novel symmetric supercapacitors based on NPC by direct carbonization of Zn-based metal-organic frameworks (MOFs) without using an additional precursor. By controlling the reaction conditions in the present study, we synthesized NPC with two different particle sizes. The effects of particle size and mass loadings on supercapacitor performance have been carefully evaluated. Our NPC materials exhibit excellent electrochemical performance with a maximum specific capacitance of 251 F g-1 in 1 M H2SO4 electrolyte. The symmetric supercapacitor studies show that these efficient electrodes have good capacitance, high stability, and good rate capability.

Published
2014

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