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Construction of Heterogenous S–C–S MoS2/SnS2/r-GO Heterojunction for Efficient CO2 Photoreduction
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-11-07 , DOI: 10.1021/acs.inorgchem.9b02676 Shikang Yin 1 , Jinze Li 1 , Linlin Sun 1 , Xin Li 1 , Dong Shen 1 , Xianghai Song 1 , Pengwei Huo 1 , Huiqin Wang 2 , Yongsheng Yan 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-11-07 , DOI: 10.1021/acs.inorgchem.9b02676 Shikang Yin 1 , Jinze Li 1 , Linlin Sun 1 , Xin Li 1 , Dong Shen 1 , Xianghai Song 1 , Pengwei Huo 1 , Huiqin Wang 2 , Yongsheng Yan 1
Affiliation
Photocatalytic reduction of CO2 by semiconductors is of great significance in generating value-added fuels. Here, we construct a novel S–C–S heterojunction constituted of MoS2/SnS2/r-GO by a simple solvothermal method. The prepared MoS2/SnS2/r-GO showed significant photoexcitation of photosensitive oxygen (ROS) by electron spin resonance spectroscopy, demonstrating that superoxide radicals (•O2–), pores, and hydroxyl radicals (•OH) are the main active species. The constructed S–C–S heterojunction has a multilevel electron transport mechanism and synergistic effect, which provides the possibility of producing more organic fuel. The photocatalytic materials were characterized by XRD, XPS, SEM, TEM, PL, etc. As a result, the atomic layer MoS2/SnS2/r-GO heterojunction exhibited a CO formation rate of 68.53 μmol g–1 h–1 and a CH4 formation rate of 50.55 μmol g–1 h–1, respectively. This work opens up new prospects for the formation of heterojunctions of chalcogenide transition-metal sulfides.
中文翻译:
高效CO 2光还原的异质SC MoS 2 / SnS 2 / r-GO异质结的构建
半导体对CO 2的光催化还原在产生增值燃料方面具有重要意义。在这里,我们通过简单的溶剂热方法构建了由MoS 2 / SnS 2 / r-GO构成的新型S–C–S异质结。制备的MoS 2 / SnS 2 / r-GO通过电子自旋共振光谱显示出对光敏氧(ROS)的显着光激发,表明超氧自由基(• O 2 –),孔和羟基自由基(•OH)是主要的活性物质。构造的S–C–S异质结具有多级电子传输机制和协同效应,这提供了生产更多有机燃料的可能性。通过XRD,XPS,SEM,TEM,PL等对光催化材料进行了表征。结果,原子层MoS 2 / SnS 2 / r-GO异质结的CO形成速率为68.53μmolg –1 h –1和CH 4的形成速率分别为50.55μmolg –1 h –1。这项工作为硫族化物过渡金属硫化物异质结的形成开辟了新的前景。
更新日期:2019-11-08
中文翻译:
高效CO 2光还原的异质SC MoS 2 / SnS 2 / r-GO异质结的构建
半导体对CO 2的光催化还原在产生增值燃料方面具有重要意义。在这里,我们通过简单的溶剂热方法构建了由MoS 2 / SnS 2 / r-GO构成的新型S–C–S异质结。制备的MoS 2 / SnS 2 / r-GO通过电子自旋共振光谱显示出对光敏氧(ROS)的显着光激发,表明超氧自由基(• O 2 –),孔和羟基自由基(•OH)是主要的活性物质。构造的S–C–S异质结具有多级电子传输机制和协同效应,这提供了生产更多有机燃料的可能性。通过XRD,XPS,SEM,TEM,PL等对光催化材料进行了表征。结果,原子层MoS 2 / SnS 2 / r-GO异质结的CO形成速率为68.53μmolg –1 h –1和CH 4的形成速率分别为50.55μmolg –1 h –1。这项工作为硫族化物过渡金属硫化物异质结的形成开辟了新的前景。