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Construction of Nano-Fe2O3-Decorated Flower-Like MoS2 with Fe–S Bonds for Efficient Photoreduction of CO2 under Visible-Light Irradiation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-07-31 , DOI: 10.1021/acssuschemeng.0c04042 Yunxia Zhao 1 , Wei Cai 1 , Yunpeng Shi 1 , Jiayu Tang 1 , Yehui Gong 1 , Mindong Chen 1 , Qin Zhong 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-07-31 , DOI: 10.1021/acssuschemeng.0c04042 Yunxia Zhao 1 , Wei Cai 1 , Yunpeng Shi 1 , Jiayu Tang 1 , Yehui Gong 1 , Mindong Chen 1 , Qin Zhong 2
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A p–n heterostructured α-Fe2O3/MoS2 composite via Fe–S bonds was developed as a highly efficient CO2 photoreduction catalyst driven by visible light. The α-Fe2O3 nanoparticles were embedded between the flower-like MoS2 layers, benefitting for the uniform dispersion of themselves and meanwhile promoting the formation of 1T–MoS2. The construction of p–n heterostructure caused by Fe–S bonds led to the close contact between α-Fe2O3 and MoS2, in which α-Fe2O3 was capped with few MoS2 layers and enhanced the segregation and transportation of photoinduced electrons and holes. As a result, the 5FM photocatalyst (5 wt % α-Fe2O3 loading on MoS2) exhibited an excellent CO2 photoreduction performance, which obtained 121 μmol·h–1·g–1 of CH4 and 41 μmol·h–1·g–1 of CH3OH. During the photoreduction process, α-Fe2O3 species were the main active sites, confirmed by in situ diffuse reflectance infrared Fourier transform spectroscopy.
中文翻译：
可见光照射下具有Fe-S键的纳米Fe 2 O 3装饰花样MoS 2的构建，可有效还原CO 2
甲的p-n异质结构的α-Fe 2 ö 3 / MOS 2通过的Fe-S键的复合被开发为一种高效的CO 2通过可见光驱动光还原催化剂。所述的α-Fe 2个ö 3纳米颗粒嵌入在花状的MoS之间2层，受益为自己的均匀分散，同时促进1T-MOS形成2。造成导致之间的紧密接触的Fe-S键的p-n异质结构的结构的α-Fe 2 ö 3和MoS 2，其中的α-Fe 2 ö 3用少数的MoS封端2层并增强了光致电子和空穴的隔离和传输。其结果是，所述光催化剂5FM（5％（重量）的α-Fe 2 ö 3装载上的MoS 2）表现出优异的CO 2光还原的性能，这得到121微摩尔·H -1 ·克-1的CH 4和41微摩尔·H – 1 ·g –1的CH 3 OH。在光还原过程，的α-Fe 2 ö 3种为主要活性位点，通过在原位漫反射证实傅里叶变换红外光谱。
更新日期：2020-08-24
中文翻译：
可见光照射下具有Fe-S键的纳米Fe 2 O 3装饰花样MoS 2的构建，可有效还原CO 2
甲的p-n异质结构的α-Fe 2 ö 3 / MOS 2通过的Fe-S键的复合被开发为一种高效的CO 2通过可见光驱动光还原催化剂。所述的α-Fe 2个ö 3纳米颗粒嵌入在花状的MoS之间2层，受益为自己的均匀分散，同时促进1T-MOS形成2。造成导致之间的紧密接触的Fe-S键的p-n异质结构的结构的α-Fe 2 ö 3和MoS 2，其中的α-Fe 2 ö 3用少数的MoS封端2层并增强了光致电子和空穴的隔离和传输。其结果是，所述光催化剂5FM（5％（重量）的α-Fe 2 ö 3装载上的MoS 2）表现出优异的CO 2光还原的性能，这得到121微摩尔·H -1 ·克-1的CH 4和41微摩尔·H – 1 ·g –1的CH 3 OH。在光还原过程，的α-Fe 2 ö 3种为主要活性位点，通过在原位漫反射证实傅里叶变换红外光谱。
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