Insight into reaction pathways of CO2 photoreduction into CH4 over hollow microsphere Bi2MoO6-supported Au catalysts

被引：66
作者：
He, Wenjie [1 ]
Wei, Yuechang [1 ,2 ]
Xiong, Jing [1 ]
Tang, Zhiling [1 ]
Song, Weiyu [1 ]
Liu, Jian [1 ]
Zhao, Zhen [1 ]
机构：
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[2] China Univ Petr, Key Lab Opt Detect Technol Oil & Gas, Beijing 102249, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2022年 / 433卷
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Au nanoparticles; Bi2MoO6 hollow microspheres; CH4 photo-synthesis pathway; In situ DRIFTS; DFT; PHOTOCATALYTIC DEGRADATION; NOBLE-METAL; REDUCTION; CONVERSION; METHANOL; REMOVAL; TIO2; FTIR; FORMALDEHYDE; PERFORMANCE;
D O I：
10.1016/j.cej.2021.133540
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The nanocatalysts of Au nanoparticles (NPs) supported on hollow microsphere structured Bi2MoO6 (HMS-BMO) were successfully synthesized by template solvent thermal and in-situ ammonium hydroxide-assisted deposition methods. The hollow microsphere morphology of Bi2MoO6 support contributes to light absorption and possesses high surface area. Supported Au NPs with surface plasmon resonance effect are favorable for enhancing visible light absorption and high-energy electron enrichment. The Au-1.5/HMS-BMO catalyst shows the highest conversion efficiency (96.6%) of CO2 and selectivity of CH4 product (94.2%) under visible light irradiation. The apparent quantum efficiency of CH4 formation can reach to 1.71%. Based on the results of in-situ diffuse reflection infrared spectroscopy and density functional theory calculation, the photocatalytic mechanism of Au/HMS-BMO catalyst for CO2 reduction is researched. The possible hydrogenation path of CO2 methanation is proposed: CO2* & RARR; COOH* & RARR; HCO* & RARR; CH3O* & RARR; CH4. It provides a novel strategy for designing efficient photocatalysts for CO2 reduction.
引用
收藏
页数：11
相关论文
共 56 条
[11]   Photocatalytic CO2 reduction by TiO2 and related titanium containing solids [J].
Dhakshinamoorthy, Amarajothi ;
Navalon, Sergio ;
Corma, Avelino ;
Garcia, Hermenegildo .
ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (11) :9217-9233
[12]   THE FUNDAMENTAL VIBRATIONAL SPECTRA OF THE FORMATES OF THE MAIN GROUP ELEMENTS [J].
DONALDSON, JD ;
KNIFTON, JF ;
ROSS, SD .
SPECTROCHIMICA ACTA, 1964, 20 (05) :847-851
[13]   Developing stretchable and graphene-oxide-based hydrogel for the removal of organic pollutants and metal ions [J].
Dong, Chencheng ;
Lu, Jie ;
Qiu, Bocheng ;
Shen, Bin ;
Xing, Mingyang ;
Zhang, Jinlong .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 222 :146-156
[14]   Reaction Intermediates and Side Products in the Methanation of CO and CO2 over Supported Ru Catalysts in H2-Rich Reformate Gases [J].
Eckle, Stephan ;
Anfang, Hans-Georg ;
Behm, R. Juergen .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (04) :1361-1367
[15]   Organic semiconductor photocatalyst can bifunctionalize arenes and heteroarenes [J].
Ghosh, Indrajit ;
Khamrai, Jagadish ;
Savateev, Aleksandr ;
Shlapakov, Nikita ;
Antonietti, Markus ;
Koenig, Burkhard .
SCIENCE, 2019, 365 (6451) :360-+
[16]   Impact of fossil fuel emissions on atmospheric radiocarbon and various applications of radiocarbon over this century [J].
Graven, Heather D. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2015, 112 (31) :9542-9545
[17]   Noble metal (Pt, Au@Pd) nanoparticles supported on metal organic framework (MOF-74) nanoshuttles as high-selectivity CO2 conversion catalysts [J].
Han, Yuqing ;
Xu, Haitao ;
Su, Yuqun ;
Xu, Zhen-liang ;
Wang, Kefu ;
Wang, Wenzhong .
JOURNAL OF CATALYSIS, 2019, 370 :70-78
[18]   Z-scheme heterojunction of SnS2-decorated 3DOM-SrTiO3 for selectively photocatalytic CO2 reduction into CH4 [J].
He, Wenjie ;
Wu, Xingxing ;
Li, Yifei ;
Xiong, Jing ;
Tang, Zhiling ;
Wei, Yuechang ;
Zhao, Zhen ;
Zhang, Xiao ;
Liu, Jian .
CHINESE CHEMICAL LETTERS, 2020, 31 (10) :2774-2778
[19]   All-solid-state artificial Z-scheme porous g-C3N4/Sn2S3-DETA heterostructure photocatalyst with enhanced performance in photocatalytic CO2 reduction [J].
Huo, Yao ;
Zhang, Jinfeng ;
Dai, Kai ;
Li, Qiang ;
Lv, Jiali ;
Zhu, Guangping ;
Liang, Changhao .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 241 :528-538
[20]   Effects of fossil fuel and total anthropogenic emission removal on public health and climate [J].
Lelieveld, J. ;
Klingmueller, K. ;
Pozzer, A. ;
Burnett, R. T. ;
Haines, A. ;
Ramanathan, V. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (15) :7192-7197
123456