MoO_(3-x)负载蜂窝状氮化碳的制备及其光热协同催化CO_(2)还原性能研究  

Preparation of MoO_(3-x) Modified Honeycomb-Like Carbon Nitride and Its Photothermal Synergistic Catalytic CO_(2) Reduction Performance

作　　者：李晨露 王亚男 徐松[1] 李忠玉[1,2,3] LI Chenlu;WANG Yanan;XU Song;LI Zhongyu(Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Advanced Catalysis and Green Manufacturing Collaborative Innovation Center,Changzhou University,Changzhou 213164,China;School of Environmental Science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院,江苏省先进催化材料与技术重点实验室,江苏常州213164 [2]常州大学先进催化与绿色制造协同创新中心,江苏常州213164 [3]常州大学环境与安全工程学院,江苏常州213164

出　　处：《化学反应工程与工艺》2024年第1期10-18,共9页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金(21876015);江苏省高校自然科学基金(20KJA50007);江苏省科技厅自然科学青年基金(BK20220625)。

摘　　要：在传统光催化CO_(2)反应中引入热能是提高转化效率的新方法。通过一锅法将含氧空位缺陷的MoO_(3)(MoO_(3-x))均匀负载在蜂窝状氮化碳(NCN)表面,成功制备出不同MoO_(3-x)比例的MNCN复合催化剂。通过X射线粉末衍射、扫描电子显微镜、紫外可见漫反射光谱、傅立叶变换红外光谱等手段对复合材料进行表征;在全光谱照射下,复合样品MNCN-1.0光热催化CO_(2)表现出优秀的性能,CO和CH_(4)的产率分别达到25.35μmol/(g·h)和1.80μmol/(g·h)。这是由于MoO_(3-x)独特的性质使其在全光谱反应中提高反应温度,促进温度场与光场的协同作用,提高了光催化的反应效率。Introducing thermal energy into traditional photocatalytic CO_(2) reactions is a novel method for enhancing conversion efficiency.This study successfully prepared oxygen vacancy defect MoO_(3)(MoO_(3-x))modified honeycomb-like carbon nitride(MNCN)composite catalysts with various ratios by uniformly loading MoO_(3-x) onto the surface of honeycomb-like carbon nitride(NCN)using a one-pot synthesis method.The composite materials were characterized by X-ray diffraction,scanning electron microscope,Ultraviolet-visible diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy.Under full-spectrum illumination,the MNCN-1.0 composite exhibited an excellent performance,and yields of CO and CH_(4) reached 25.35μmol/(g‧h)and 1.80μmol/(g‧h)in the photothermal catalytic CO_(2) reaction.This is attributed to the unique properties of MoO_(3-x),which is able to enhance the reaction temperature in full-spectrum reactions,promoting the synergistic interaction between the temperature field and the light field and thereby improving the efficiency of photocatalysis.

关 键 词：光热催化 CO_(2)还原 蜂窝状氮化碳 氧缺陷三氧化钼 助催化剂 

分 类 号：X701[环境科学与工程—环境工程] TQ032.4[化学工程]