三维花状WO_(3-x)高效光电催化剂  

Preparation of WO_(3-x) and its photocatalytic properties

作　　者：崔慧娜 董文斌 廖港丽 赵震 姚垚[1] CUI Hui-na;DONG Wen-bin;LIAO Gang-li;ZHAO Zhen;YAO Yao(College of Chemistry and Chemical Engineering,Ningxia Normal University,Guyuan 756000,China)

机构地区：[1]宁夏师范学院化学化工学院,宁夏固原756000

出　　处：《化学研究与应用》2023年第12期2889-2896,共8页Chemical Research and Application

基　　金：国家自然科学基金(22265025/12164037)资助;宁夏自然科学基金(2021AAC05013/2022AAC03336)资助;六盘山资源工程技术研究中心(HGZD22-14)及无机化学重点学科资助;固原市科技计划项目(2020GYKYF011)资助。

摘　　要：采用简便的溶剂热法成功制备出WO_(3)/WO_(2.83)高效光电催化剂(WO3),对其进行光电催化测试,结果表明,所制备的WO3纳米光电催化剂表现出较高的电催化活性,在电流密度达到10mA·cm^(-2)时,所需起始电压仅为-0.52V(vsHER)。而在加光后,纳米材料WO_(3-x)的催化性能得到了进一步提升,其起始电位从-0.52V(vsHER)降低到了-0.45V(vsHER),Re值由200.3Ω减小到了120.7Ω。值得一提的是,本文所制备的WO_(3-x)在放置90天后仍具有较高的电催化活性,表明其具有良好的长期稳定性。WO_(3)/WO2.83 photocatalyst(WO_(3-x))was successfully prepared by a simple solvothermal method.The results show that the nano-monoclinic WO_(3-x) electrocatalyst has high electrocatalytic activity when the current density reaches 10 mA·cm^(-2) and the re-quired initial voltage is-0.52 V(vs HER).After addition of light,the catalytic performance of WO_(3-x) was further improved,the ini-tial potential decreased from-0.52V(vs HER)to-0.45V(vs HER),and the Ret value decreased from 200.3Ω to 120.7Ω.It is worth mentioning that WO_(3-x) prepared in this paper still has high electrocatalytic activity after 90 days of placement,It shows that it has good long-term stability.

关 键 词：单斜相WO_(3-x) 水热法 光电催化 析氢 

分 类 号：O614.6[理学—无机化学]