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

被引：67

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

页数：11

共 56 条

[1] Photocatalytic degradation of formaldehyde containing wastewater from veterinarian laboratories [J].

Araña, J ;

Nieto, JLM ;

Melián, JAH ;

Rodríguez, JMD ;

Díaz, OG ;

Peña, JP ;

Bergasa, O ;

Alvarez, C ;

Méndez, J .

CHEMOSPHERE, 2004, 55 (06) :893-904

[2] FTIR study of gas-phase alcohols photocatalytic degradation with TiO2 and AC-TiO2 [J].

Araña, J ;

Doña-Rodríguez, JM ;

Cabo, CGI ;

González-Díaz, O ;

Herrera-Melián, JA ;

Pérez-Peña, J .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 53 (04) :221-232

[3] In-situ FT-IR study on CO2 hydrogenation over Cu catalysts supported on SiO2, Al2O3, and TiO2 [J].

Bando, KK ;

Sayama, K ;

Kusama, H ;

Okabe, K ;

Arakawa, H .

APPLIED CATALYSIS A-GENERAL, 1997, 165 (1-2) :391-409

[4] In Situ Grown Monolayer N-Doped Graphene on CdS Hollow Spheres with Seamless Contact for Photocatalytic CO2 Reduction [J].

Bie, Chuanbiao ;

Zhu, Bicheng ;

Xu, Feiyan ;

Zhang, Liuyang ;

Yu, Jiaguo .

ADVANCED MATERIALS, 2019, 31 (42)

[5] FTIR study of methanol decomposition on gold catalyst for fuel cells [J].

Boccuzzi, F ;

Chiorino, A ;

Manzoli, M .

JOURNAL OF POWER SOURCES, 2003, 118 (1-2) :304-310

[6] INFRARED SPECTROSCOPIC IDENTIFICATION OF SPECIES ARISING FROM REACTIVE ADSORPTION OF CARBON OXIDES ON METAL-OXIDE SURFACES [J].

BUSCA, G ;

LORENZELLI, V .

MATERIALS CHEMISTRY, 1982, 7 (01) :89-126

[7] In-situ FTIR study of adsorption and photoreactions of CH2Cl2 on powdered TiO2 [J].

Chen, MT ;

Lien, CF ;

Liao, LF ;

Lin, JL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (16) :3837-3843

[8] Rare-Earth Single-Atom La-N Charge-Transfer Bridge on Carbon Nitride for Highly Efficient and Selective Photocatalytic CO2 Reduction [J].

Chen, Peng ;

Lei, Ben ;

Dong, Xing'an ;

Wang, Hong ;

Sheng, Jianping ;

Cui, Wen ;

Li, Jieyuan ;

Sun, Yanjuan ;

Wang, Zhiming ;

Dong, Fan .

ACS NANO, 2020, 14 (11) :15841-15852

[9] Review of natural gas hydrates as an energy resource: Prospects and challenges [J].

Chong, Zheng Rong ;

Yang, She Hern Bryan ;

Babu, Ponnivalavan ;

Linga, Praveen ;

Li, Xiao-Sen .

APPLIED ENERGY, 2016, 162 :1633-1652

[10] Bi2MoO6 Quantum Dots In Situ Grown on Reduced Graphene Oxide Layers: A Novel Electron-Rich Interface for Efficient CO2 Reduction [J].

Dai, Weili ;

Xiong, Wuwan ;

Yu, Junjie ;

Zhang, Shuqu ;

Li, Bing ;

Yang, Lixia ;

Wang, Tengyao ;

Luo, Xubiao ;

Zou, Jianping ;

Luo, Shenglian .

ACS APPLIED MATERIALS & INTERFACES, 2020, 12 (23) :25861-25874

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