Results 81 to 90 of about 11,300,632 (342)

Graphene Oxide-Assisted Dispersion of Carbon Nanotubes in Sulfonated Chitosan-Modified Electrode for Simultaneous Detections of Sodium Nitrite, Hydroquinone, and Catechol

International Journal of Electrochemical Science, 2015
Graphene oxide (GO) and carbon nanotubes (CNT) were dispersed in chitosan (CS) or sulfonated chitosan (sCS) aqueous solution followed by casting films on glassy carbon electrodes (GCE) to investigate the electrocatalytic activities of the films by cyclic
Yeong-Tarng Shieh, Bo-Rung Huang, Min-Lang Tsai   +2 more
doaj   +1 more source

Rate‐Adaptive Site Transformation Catalyst for Parallel Water Dissociation and Hydrogen Adsorption in Alkaline Hydrogen Evolution

Advanced Functional Materials, EarlyView.
This work presents a rate‐adaptive site transformation strategy in Ag‑ethylenediamine intercalated Co9S8, which not only enables parallel water dissociation and H* adsorption, but also allows the catalyst to provide more active sites under high demand, removing a major bottleneck. The catalyst achieves a record current density of 4.2 A cm−2@2.0 V, with
Yongqi Ye, Yuzhuo Jiang, Bin Tian, Derek Ho   +3 more
wiley   +1 more source

Boron-Insertion-Induced Lattice Engineering of Rh Nanocrystals Toward Enhanced Electrocatalytic Conversion of Nitric Oxide to Ammonia

Nano-Micro Letters
Highlights Phase regulation of B-inserted rhodium (Rh) nanocrystals is achieved using a facile wet-chemical approach. The B-inserted Rh nanocatalysts exhibit phase-dependent behaviors in electrocatalytic nitric oxide (NO) reduction reaction.
Peng Han, Xiangou Xu, Weiwei Chen, Long Zheng, Chen Ma, Gang Wang, Lei Xu, Ping Gu, Wenbin Wang, Qiyuan He, Zhiyuan Zeng, Jinlan Wang, Dong Su, Chongyi Ling, Zhengxiang Gu, Ye Chen   +15 more
doaj   +1 more source

Recent Advances in Noble Metal (Pt, Ru, and Ir)-Based Electrocatalysts for Efficient Hydrogen Evolution Reaction [PDF]

, 2020
Noble metal (Pt, Ru, and Ir)-based electrocatalysts are currently considered the most active materials for the hydrogen evolution reaction (HER). Although they have been associated with high cost, easy agglomeration, and poor stability during the HER ...
Baek, Jong-Beom, Li, Changqing
core   +1 more source

Balancing Electrons to Break the Activity‐Selectivity Trade‐Off in H2O2 Electrosynthesis

Advanced Functional Materials, EarlyView.
Carrier‐concentration balancing in CuS is achieved by coupling cobalt dopants with cobalt vacancies, converting CuS from p‐ to n‐type to accelerate 2e− ORR while withdrawing excess carriers to optimize *OOH binding for H2O2 desorption. The catalyst reaches 8.14 mol g−1 h−1 with >84% selectivity in 1.0 M KOH and drives robust electro‐Fenton dye ...
Hangning Liu, Changhui Sun, Luyao Wang, Yuhang Cheng, Yi Xin, Xuyun Guo, Hui Li, Valeria Nicolosi, Yuhai Dou, Peng Li, Tianyi Ma, Jie Wang   +11 more
wiley   +1 more source

Principles of designing electrocatalysts to boost C–N coupling reactions for urea synthesis

EcoEnergy
The electrocatalytic C–N coupling reaction can achieve green and sustainable urea synthesis as well as CO2 conversion and nitrogen fixation. However, the electrocatalytic C–N coupling reaction still faces challenges such as difficult adsorption and ...
Jingwei Li, Shengkai Li, Yaohao Zhang, Zhao‐Qing Liu   +3 more
doaj   +1 more source

Preparation of melamine-Ni-Cu nanocomposite as a promising catalytic substrate for methanol electrooxidation [PDF]

شیمی کاربردی روز
Melamine is a nitrogen-rich compound. Its composite with transition metals has an electron-rich structure and increases electrocatalytic activity and charge transfer.
Mohammad Ali Kamyabi, Javad Azizi
doaj   +1 more source

Electrocatalytic Oxidation of Urea on Nickel Electrodeposited Glassy Carbon Electrode

International Journal of Electrochemical Science, 2020
Nickel electrodeposited glassy carbon electrode was prepared and the activity to the electrocatalytic oxidation of urea in an alkaline medium was investigated by cyclic voltammetry.
Mengwei Xue, Zhou Zhou, Benzhi Liu, Jingwen Yu, Shiyuan Qi, Qinpu Liu, Guangqing Liu   +6 more
doaj   +1 more source

Solvent‐Free Manufacturing of Multifunctional Gas Diffusion Electrode Architectures for Enhanced CO2 Conversion From Low‐Concentration Streams

Advanced Functional Materials, EarlyView.
A tandem gas diffusion electrode (GDE) leveraging hierarchically engineered microgranules enables efficient CO2 electroreduction under dilute CO2 conditions. A key innovation lies in the solvent‐free precision assembly of metal–organic‐frameworks, carbon nanotubes, and copper nanoparticles.
Kai‐Jen Wu, Carter Racine, Ahmed Badreldin, Shengyao Wang, Zongsu Han, Hong‐Cai Zhou, Ying Li, Heng Pan   +7 more
wiley   +1 more source

Engineering Electrocatalytic Microcells for Two-Dimensional Materials

Cell Reports Physical Science, 2020
Summary: Profiting from intriguing structures and electronic properties, two-dimensional (2D) materials garner increasing attention in energy fields, electrocatalysis in particular.
Xiaohui Zhu, Chenyang Wang, Lei Fu
doaj   +1 more source