Pd M /g-C 3 N 4 ( M =Cu、Co、Ir) 催化剂制备及其可见光驱动光解水制氢反应性能
引用次数: 0
Abstract
贵金属基光催化剂在可见光驱动分解水产氢反应中具有十分优异的性能，却面临价格贵、利用率较低的问题。本文采用乙二醇还原法，将金属Cu、Co、Ir分别引入到贵金属Pd粒子中形成二元PdM金属粒子，负载到g-C3N4表面制得催化剂。在可见光驱动下分解水产氢性能测试结果表明，二元金属Co、Ir的引入相较于0.05 g单金属负载催化剂的4 h产氢量都有明显提升，而Cu则稍微有所降低，最高产氢量是215 μmol。并且使得Pd原子的平均产氢量增至1.4—4.4倍。光催化性能提升的主要原因是由于PdM粒子负载增强了样品对光的吸收，促进了光生电子与空穴的分离，增加了样品的亲水性降低了水分子吸附能。另外，二元金属的引入可显著提升Pd原子的平均产氢量。尤其是与过渡金属Co形成PdCo粒子，其4 h产氢性能与PdIr接近，但其价格远低于Ir。因而PdCo/g-C3N4催化剂具有很好的经济性。Pd M /g-C 3 N 4 ( M =Cu、Co、Ir) 催化剂制备及其可见光驱动光解水制氢反应性能
贵金属基光催化剂在可见光驱动分解水产氢反应中具有十分优异的性能，却面临价格贵、利用率较低的问题。本文采用乙二醇还原法，将金属Cu、Co、Ir分别引入到贵金属Pd粒子中形成二元PdM金属粒子，负载到g-C3N4表面制得催化剂。在可见光驱动下分解水产氢性能测试结果表明，二元金属Co、Ir的引入相较于0.05 g单金属负载催化剂的4 h产氢量都有明显提升，而Cu则稍微有所降低，最高产氢量是215 μmol。并且使得Pd原子的平均产氢量增至1.4—4.4倍。光催化性能提升的主要原因是由于PdM粒子负载增强了样品对光的吸收，促进了光生电子与空穴的分离，增加了样品的亲水性降低了水分子吸附能。另外，二元金属的引入可显著提升Pd原子的平均产氢量。尤其是与过渡金属Co形成PdCo粒子，其4 h产氢性能与PdIr接近，但其价格远低于Ir。因而PdCo/g-C3N4催化剂具有很好的经济性。
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来源期刊
CiteScore
1.20
自引率
0.00%
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0
期刊介绍：
Environmental Chemistry is a peer-reviewed journal established in 1982. It is sponsored by the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, and is published monthly by Science Press. It is appreciated by researchers from various research institutes in the environmental chemistry field, including universities, institutes of environmental research, environmental monitoring stations, etc.
Environmental Chemistry is an essential journal in China. It is included in many important retrieval systems and citation databases at home and abroad, such as CA (Chemical Abstracts), JST China (Japan Science and Technology Agency (Chinese Bibliographic Database), CSA(Cambridge Science Abstracts, AJ(Abstract Journal, VINITI), CSTPCD( Chinese Science and Technology Paper Citation Database), and CSCD(Chinese Science Citation Database) and so on.
The journal comprises subjects as original research on all aspects of chemistry related to environmental problems, such as sources, sinks, transfer, transformation, distribution, reactions, effects and fate of pollutants in air, water, soil and ecosystem, and also publishes the development and application of new chemical methods, monitoring, analysis, characterization of pollutants and trace amounts of naturally occurring active chemicals in the environment. Toxicity, removal and safety of pollutants are also the main topics. Development, modification and automation of instruments and green techniques to control pollutants will also be part of the journal.
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