Results 31 to 40 of about 1,188,112 (167)
Tailoring Spin States of CuNNi3 via d‐d Orbital Coupling for High Performance Water Splitting
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Against the backdrop of escalating global energy crises and environmental challenges, the development of clean and sustainable hydrogen energy has become increasingly imperative. Hydrogen production via water electrolysis is widely regarded as a promising approach due to its green and efficient characteristics.
Weigao Zhong +6 more
wiley +1 more source
, 2012 基于半导体材料的太阳能转化利用，将是人类从根本上解决能源与环境问题的最为理 想和有效的途径之一。在太阳能化学转化利用的一系列反应中，光催化氧化反应常常是速 控过程。本论文工作中对典型半导体光催化材料BiVO4 进行可控合成以及对助催化剂的氧 化催化功能进行了探索，取得如下主要结果： 通过调变TiCl3导向剂加入量和pH值在水热条件下可控合成了一系列具有高暴露(010) 面的BiVO4光催化剂。首次发现BiVO4光催化剂氧化水的活性与(010)面的暴露程度成正关 联。表面原子结构分析表明(010 ...
王冬娥
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Gongye shui chuli, 2015 以Cd(CH3COO)2·2H2O、Mn(CH3COO)2·4H2O及Na2S·9H2O为原料,采用共沉淀方法合成了Mn/CdS光催化剂,并用XRD、HRTEM对其进行表征。以甲基橙为光催化反应的模型,考察了Mn/CdS光催化剂的紫外光催化活性。实验结果表明:实验样品中Mn2+的质量分数对Mn/CdS光催化剂的紫外光催化活性有重要影响,当w(Mn)为0.50%时Mn/CdS光催化降解甲基橙的降解率达84.7%。
崔玉民 +5 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The construction of p–n homojunctions represents a promising strategy for effective solar‐driven photocatalytic hydrogen evolution, owing to their inherent advantages of superior lattice matching and minimized charge transfer resistance. However, this approach remains largely unexplored.
Yueqiang Lin +6 more
wiley +1 more source
, 2007 本发明涉及一种利用可见光光催化分解H2S制取氢气的光催化剂及其制备方法。本发明通过共沉淀-水热法制备组成为(H2Ti4O9)x(CdS)y(其中 4x+y＝1；0≤x≤1，0≤y≤1)的光催化剂，通过在催化剂表面同时担载贵金属和贵金属硫化物来提高光催化产氢的效率 ...
马贵军 +4 more
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Gongye shui chuli, 2011 采用固相合成法制备了Y2O3-Bi2O3复合可见光催化剂, 用XRD、DRS对复合催化剂进行了表征。以甲基橙为模拟废水, 在日光色镝灯光照下, 研究了废水浓度、催化剂投加量、温度、pH等对Y2O3-Bi2O3光催化活性的影响。实验结果表明:在甲基橙质量浓度为20mg/L、Y2O3-Bi2O3催化剂投加质量浓度为8g/L、pH=1、光照时间为1h的条件下, 甲基橙降解率最大, 可达到84.30%, 比不加入催化剂提高了83.9%。
曾玉凤, 梁春杰, 刘华聪, 周振
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi +8 more
wiley +1 more source
, 2010 一种用于光催化重整生物质制氢的TiO2光催化剂，锐钛矿和金红石相的晶相组成可以在较宽范围内调控，锐钛矿和金红石相的晶相组成通过XRD上锐钛矿最强衍射峰(101)和金红石最强衍射峰(110)的强度计算得到。本发明的TiO2光催化剂用于光催化重整生物质制氢反应中，大幅度的提高了产氢活性并有效抑制一氧化碳的生成，其中在光催化重整甲醇反应中，该TiO2光催化剂的产氢活性是TiO2参比剂(P25)的五倍左右，氢气中CO的含量至少降低两个数量级，甚至到5ppm以下 ...
徐倩 +5 more
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Gongye shui chuli, 2023 喹诺酮类抗生素的大量排放对人体健康和生态环境产生了严重危害。光催化降解可将喹诺酮类抗生素转化为易于生物降解的化合物或者毒性较小的无机分子。掺杂或构建异质结等方式可以提高光催化剂的稳定性、扩大激发光波长范围及抑制光生电子-空穴对的复合。综述了光催化的基本原理、常用半导体光催化材料的特性及其对几种常见喹诺酮类抗生素（环丙沙星、诺氟沙星、左氧氟沙星等）的降解。总结了不同光催化材料降解喹诺酮类抗生素的效率，分析了光催化材料产生自由基的机制及抗生素降解的中间产物。针对光催化法面临的一些问题提出了未来的研究方向 ...
刘宏, 庞族族, 石林, 罗士聪
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Converting CO2 to CH4 under mild conditions is a promising strategy for solving environmental and energy problems, but also a challenge. In this work, the low‐temperature CO2 hydrogenation process over Ni/CeO2 catalysts was significantly accelerated by optimizing the H2 dissociation ability of Ni through the size effect, thus A‐Ni/CeO2 with an
Yu Xie +8 more
wiley +1 more source