| 摘要:在不同温度下采用乙二醇溶剂热合成法合成Bi2MoO6 催化剂（BMO-x，x=140、160、180），BMO-160在450 ℃下煅烧的样品为BMO。用XRD、BET、SEM、EDS、UV-vis DRS、XPS、in-situ DRIFTS等表征方法研究其理化特性，建立BMO和BMO-x（x=140、160、180）催化剂的反应性能与孔道结构、材料形貌和缺陷空位的构效关系。结果表明，适宜的溶剂合成温度可以形成更高的孔隙率，调控氧空位的占比，有助于产生更好的催化性能。其中，BMO-160的CO产率更高，这是由于在160 ℃溶剂热合成温度下制备的样品形貌更优，氧空位占比适中。 |
| 关键词: 碳中和 合成燃料 CO2还原 光热催化 Bi2MoO6 溶剂热合成 |
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| Performance of Defective State Bi2MoO6 Photothermal Catalytic Reduction of CO2 and H2O to CO |
| WU Xingze,GUAN Bin,CHEN Yujun,MA Zeren,HUANG Zhen |
| Key Laboratory for Power Machinery & Engineering of Ministry of Education，Shanghai Jiao Tong University， Shanghai 200240， China |
| Abstract:Bi2MoO6（BMO-x，x=140，160，180）catalysts were synthesized at different temperatures using the glycol solvothermal synthesis method，and BMO-160 calcined at 450 ℃ was a sample of BMO.Their physicochemical properties were investigated by XRD，BET，SEM，EDS，UV-vis DRS，XPS，in-situ DRIFTS，etc.The conformational relationships between the reaction performance and the pore structure，material morphology and defect vacancies of BMO and BMO-x（x=140，160，180）catalysts were established.The results show that a suitable solvent synthesis temperature can form higher porosity and modulate the concentration of oxygen vacancies，which helps to realize better catalytic performance.Among them，the higher CO yield of BMO-160 is attributed to the better morphology of the samples prepared at the solvothermal synthesis temperature of 160 ℃ and the moderate concentration of oxygen vacancies. |
| Key words: carbon neutrality synthetic fuel CO2 reduction photothermal catalysis Bi2MoO6 solvothermal synthesis |
