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Your search keyword '"Rajkumar Devasenathipathy"' showing total 11 results
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11 results on '"Rajkumar Devasenathipathy"'

8. Adsorbed p-Aminothiophenol Molecules on Platinum Nanoparticles Improve Electrocatalytic Hydrogen Evolution

Author

Jin Wang, Jinhong Yu, Junjie Wang, Kaili Wang, Liuyingzi Yu, Chengcheng Zhu, Kun Gao, Zhongyan Gong, Zhuoyao Li, Rajkumar Devasenathipathy, Dongyu Cai, Haijiao Xie, and Gang Lu

Subjects
Biomaterials, General Materials Science, General Chemistry, Biotechnology
Abstract

Electrocatalytic hydrogen evolution is an important approach to produce clean energy, and many electrocatalysts (e.g., platinum) are developed for hydrogen production. However, the electrocatalytic efficiency of commonly used metal catalysts needs to be improved to compensate their high cost. Herein, the electrocatalytic efficiency of platinum nanoparticles (PtNPs) in hydrogen evolution is largely improved via simple surface adsorption of sub-monolayer p-aminothiophenol (PATP) molecules. The overpotential goes down to 86.1 mV, which is 50.2 mV lower than that on naked PtNPs. This catalytic activity is even better than that of 20 wt.% Pt/C, despite the much smaller active surface area of PATP-adsorbed PtNPs than Pt/C. It is theoretically and experimentally confirmed that the improved electrocatalytic activity in hydrogen evolution can be attributed to the change in electronic structure of PtNPs induced by surface adsorption of PATP molecules. More importantly, this strategy can also be used to improve the electrocatalytic activity of palladium, gold, and silver nanoparticles. Therefore, this work provides a simple, convenient, and versatile method for improving the electrocatalytic activity of metal nanocatalysts. This surface adsorption strategy may also be used for improving the efficiency of many other nanocatalysts in many reactions.

Published
2022

9. Selective adsorption of cysteamine molecules on Au/TiO

Author

Mengdan, Guan, Jin, Wang, Kaili, Wang, Junjie, Wang, Rajkumar, Devasenathipathy, Shunhao, He, Liuyingzi, Yu, Linrong, Zhang, Haijiao, Xie, Zhuoyao, Li, and Gang, Lu

Abstract

Photocatalytic evolution of hydrogen is becoming a research hotspot because it can help to produce clean energy and reduce environmental pollution. Titanium dioxide (TiO

Published
2022

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