缺陷态Bi_(2)MoO_(6)光热催化CO_(2)和H_(2)O还原成CO的性能  

Performance of Defective State Bi_(2)MoO_(6)Photothermal Catalytic Reduction of CO_(2)and H_(2)O to CO

作　　者：吴星泽 管斌[1] 陈宇珺 马泽人 黄震[1] 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)

机构地区：[1]上海交通大学动力机械及工程教育部重点实验室,上海200240

出　　处：《柴油机》2023年第3期34-41,55,共9页Diesel Engine

基　　金：国家自然科学基金(52076134、51676127、51436005和51176118);国家重点研发计划(2016YFC0205200、2016YFC0208000和2017YFB0103501);移动源排放控制技术国家工程实验室(NELMS2017A07);国家自然科学基金青年科学基金(51306115);低速船用发动机项目(CDGC01-KT1203);教育部留学回国人员科研基金。

摘　　要：在不同温度下采用乙二醇溶剂热合成法合成Bi_(2)MoO_(6)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。Bi_(2)MoO_(6)(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.

关 键 词：碳中和 合成燃料 CO_(2)还原 光热催化 Bi_(2)MoO_(6) 溶剂热合成 

分 类 号：O643.36[理学—物理化学]