铁酸盐系纳米异相结限域Cu金属催化剂构筑及可见光降解NO_(x)研究  

Ferrite-based Nano Heterogeneous Junction with Confi ned Cu Metallic Catalyst:Synthesis and Visible Light Degradation of NO_(x)

作　　者：夏紫蝉 燕维文 刘一萱 韦雨心 张宇飞 Xia Zichan;Yan Weiwen;Liu Yixuan;Wei Yuxin;Zhang Yufei(School of Environment&Municipal Engineering,Xi'an University of Architecture&Technology,Shaanxi,710055)

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西710055

出　　处：《当代化工研究》2025年第2期161-164,共4页Modern Chemical Research

基　　金：国家自然科学基金委面上项目“纳米孪晶异相结限域双金属催化剂构筑及光热协同降解臭氧关键前体物机理”(项目编号:52370119);中国科学院黄土与第四纪地质国家重点实验室开放基金项目“纳米异相结限域过渡金属催化剂构筑及其室温甲醛净化机制”(项目编号:SKLLQG2301)。

摘　　要：纳米光催化技术是一种利用可见光转换NO_(x)的新型高效绿色技术。采用聚丙烯酰胺溶胶凝胶法可控合成了过渡金属铜(Cu)负载铁酸镧(LaFeO_(3),LFO)异相结纳米光催化剂,LFO-Cu降解NO_(x)性能比LFO提高约3倍,Cu的加入可以适当地提高LFO的稳定性。研究发现其晶格氧与吸附氧比例下降及超氧自由基协同作用是性能增强的主要原因。Nano photocatalysis is a new high efficiency green technology for visible light conversion of NO_(x).In this study,the polyacrylamide sol-gel method was used for the controllable synthesis of LFO heterogeneous junction supported by Cu.The results showed that the degradation performance of LFO-Cu was about 3 times higher than that of LFO,and the addition of Cu can appropriately improve the stability of the LFO.The ratio of lattice oxygen to adsorbed oxygen decreased under synergistic effect of·O_(2)^(-) is the main reason for the enhanced performance.

关 键 词：氮氧化物 纳米光催化 铁酸盐异相结 限域Cu金属催化剂 

分 类 号：TQ426.6[化学工程]