Results 21 to 30 of about 1,311,480 (167)

Dual‐Engineered Electrocatalyst: Work‐Function‐Driven Electronic Reconfiguration and Self‐Sacrifice Nanorod‐Templated Nanoflowers of Ni3S2/MoS2 Heterojunctions for High‐Performance Hydrogen Evolution

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Water electrolysis is a promising method for green hydrogen production, but slow hydrogen evolution reaction (HER) kinetics require efficient catalysts. In this study, we develop a Ni3S2/MoS2 heterostructure electrocatalyst using a work‐function‐driven electronic modulation strategy combined with a self‐sacrificial template approach.
Xinxin Zhao, Haijun Pang, Qingfang Zhen, Qiong Wu, Xinming Wang, Guixin Yang, Xiaojing Yu, Yongbin Song, Wenlong Sun, Sitaramanjaneya Mouli Thalluri, Yury V. Kolen'ko, Zhipeng Yu   +11 more
wiley   +1 more source

AgBr/Ag₃PO₄的制备及光催化性能研究

Gongye shui chuli, 2015
以Ag3PO4为前体,采用原位离子交换法制备了AgBr/Ag3PO4光催化剂,以甲基橙为模型污染物,研究了其可见光催化降解性能。考察了物料配比、甲基橙初始质量浓度和催化剂用量对光降解的影响,以及材料的循环使用性及降解机理。结果表明:复合催化剂对甲基橙的降解性能优于Ag3PO4,物料比为1:1时所得催化剂的性能最好。在甲基橙为5 mg/L、催化剂用量为2 g/L时,光照30 min降解率可达96%以上。该复合催化剂可重复使用。空穴和羟基自由基是该光降解反应中的主要活性物种。
褚亮亮, 董斌, 周建伟, 罗永阳, 魏林霖   +4 more
doaj  

Template‐Assisted Construction of Atomically Dispersed Fe‐N‐C Catalysts With Dense Fe‐N4C Sites for Enhanced Oxygen Reduction Reaction

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Atomically dispersed iron–nitrogen–carbon (Fe‐N‐C) catalysts have emerged as promising alternatives for oxygen reduction reaction (ORR) owing to their highly atomic utilization. However, maintaining both Fe atomic dispersion and dense Fe‐Nx sites (typically below 2 wt%) in Fe‐N‐C catalysts is still a key challenge.
Lijuan Wang, Jie Hou, Wubo Wan, Yongjie Mo, Zhijian Liao, Shengkui Zhong, Linhua Zhu   +6 more
wiley   +1 more source

超声协同g-C₃N₄光催化降解罗丹明B的研究

Gongye shui chuli, 2021
采用高温热解法制备石墨相氮化碳，采用XRD对制备样品进行表征，并将g-C3N4催化剂用于超声协同下光催化降解罗丹明B。探究了超声与光催化对降解罗丹明B的协同作用，以及超声功率、溶液初始pH、光催化剂浓度和罗丹明B初始浓度等对罗丹明B降解效果的影响，对催化剂的循环催化性能进行了测试，并对超声协同光催化降解罗丹明B的主要活性物质和机理进行讨论。结果表明：超声功率为300 W，溶液初始pH=4，g-C3N4质量浓度为4 g/L，罗丹明B初始质量浓度为15 mg/L时，对罗丹明B的降解效率最佳，100 ...
赵福友, 金泽睿, 曹帅杰, 苏家豪, 杨晓华, 谢元华, 由美雁   +6 more
doaj  

Cavity‐Confined Indium Single‐Atom Catalysts Enable Localized Electron Enrichment for Highly Efficient and Selective Photocatalytic CO2 Reduction

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Single‐atom catalysts are attractive for CO2 photoreduction due to their maximized atomic utilization and tunable electronic structures. In this study, indium (In) single atoms were incorporated into graphitic carbon nitride (CN) through an impregnation‐assisted thermal polycondensation strategy.
Xueying Guo, Bin Liu, Xinglei Wang, Yi Zhang, Xinyi Liao, Jianmin Luo, Yuhan Li   +6 more
wiley   +1 more source

光催化降解造纸废水的影响因素及反应机理

Gongye shui chuli, 2008
光催化氧化技术已被广泛用于降解各种难降解有机物，在去除造纸废水的毒性和色度方面，比传统的生化处理法具有更高的优越性,且能提高废水的可生化降解性。作者就催化剂的性质、投加量、光催化体系的pH和外加氧化剂等因素对光催化降解造纸废水的影响及反应机理进行了讨论。
徐会颖, 周国伟, 孟庆海, 林会亮   +3 more
doaj  

Thermally Driven Hydrogenation of CO2 to Light Olefins Over Hollow Cubic In2O3‐La‐ZIF‐8 Tandem Catalyst

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Thermally driven hydrogenation of CO2 to light olefins (C2=–C4=) using metal oxide‐zeolite tandem catalysts is an effective strategy for achieving carbon neutrality. However, progress in this area is constrained by zeolite pore transport limitations, acid‐site inactivation, and surface carbon poisoning.
Haifeng Tian, Haowei Huang, Zhiyu Chen, Fei Zha, Hongshan Chen, Ruiying Ding, Yu Zhang, Hao Wei, Yuzhong Mao, Irshad Hussain, Zhicheng Zhang   +10 more
wiley   +1 more source

Cobalt‐Based Metal Hybrid Encapsulated Micro‐Aluminum for Tailoring Combustion in Composite Solid Propellants

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen, Chen Peng, Lin Fu, Fan Cui, Wenqi Zhu, Yichen Li, Lei Xiao, Jun Di, Guigao Liu, Wei Jiang, Hongfeng Ji, Gazi Hao   +11 more
wiley   +1 more source

MnOx/ACF联合VUV催化降解UDMH废水

Gongye shui chuli, 2018
采用原位还原法制备了催化剂MnOx/ACF，并联用真空紫外光（VUV）降解偏二甲肼（UDMH）废水。考察了催化剂投加量、初始pH以及初始浓度对UDMH降解率以及COD降解率的影响。结果表明：当催化剂投加量为15 g/L，UDMH初始质量浓度为50 mg/L，初始pH为9.1时，降解反应较快，UDMH的10 min降解率就达95%，COD的90 min降解率可达90%。通过8 h光照再生，催化剂活性基本可以恢复，再生3次的催化剂使用效果可以达到初次使用的80%以上。
冯锐, 贾瑛, 宋静涛, 曾宝平, 冯莉莉   +4 more
doaj  

Achieving Ambient‐Temperature Fast Hydrogenation Properties in Ga‐Doped Mg–Ni Alloy: Dual‐Phase Synergistic Catalysis and Stacking Fault Channels

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The high operating temperatures and sluggish kinetics of Mg‐based hydrogen storage materials (HSMs) are urgently being addressed. In this work, a novel Mg–Ni–Ga HSM with dual‐phase synergistic catalysis is developed, including the fishbone‐like Mg3Ni2Ga1 catalytic phase and the Mg2Ni phase with stacking faults (SFs).
Shiyang Hu, Xin Ding, Wenchao Cao, Xiangfeng Ma, Hongxian Shen, Yong Zhang, Jingjie Guo, Ruirun Chen   +7 more
wiley   +1 more source