摘要
采用水热法合成纳米颗粒状CdS(K)/In_(2)S_(3)可见光响应复合光催化剂.使用多种技术手段对单体催化剂和复合催化剂的物相、形貌、微结构、光吸收、比表面和孔容等方面进行表征.CdS和In_(2)S_(3)紧密的结合形成异质结构,并显著提升CdS和In_(2)S_(3)选择性氧化苯甲醇到苯甲醛和还原制备氢气的活性.在可见光照射下,随着CdS含量的增加,CdS/In_(2)S_(3)光催化性能逐渐增强.当CdS/In_(2)S_(3)的质量比达到0.8时,CdS(K)/In_(2)S_(3)光催化性能达到最佳,约为CdS(K)和In_(2)S_(3)单体的8.59倍和3.52倍.
Thevisible-light-response photocatalysts nanoparticle-like CdS(K)/In2S3 were synthesized by the⁃hydrothermal method.The crystal phase,morphology,micro-structure,light absorption,surface area and pore were detected by various techniques.The heterojunction was formed by combining CdS and In_(2)S_(3) tightly,and the photocatalytic activity of CdS/In2S3 for selective oxidation of benzyl alcohol intobenzaldehyde and reduc⁃tion of protons into hydrogen was enhanced significantly with respect to CdS and In_(2)S_(3).Under visible light irra⁃diation,with the increase of CdS content,the photocatalytic performanceof CdS/In_(2)S_(3) is gradually enhanced.When the mass ratio of CdS/In_(2)S_(3) reaches 0.8,the photocatalytic performanceof CdS(K)/In_(2)S_(3) is optimal,which is about 8.59 times that of CdS(K)monomer and about 3.52 times of In_(2)S_(3) monomer.
作者
王想想
孟苏刚
陈士夫
WANG Xiangxiang;MENG Sugang;CHEN Shifu(School of Chemistry and Material Science,Huaibei Normal University,235000,Huaibei,Anhui,China)
出处
《淮北师范大学学报(自然科学版)》
CAS
2021年第1期36-42,共7页
Journal of Huaibei Normal University:Natural Sciences
基金
国家自然科学基金项目(51972134,51772118)
安徽省高校自然科学研究项目(KJ2018A0387)
安徽省高校优秀拔尖人才青年项目(gxyq2019029)。
关键词
光催化
电子-空穴对
苯甲醇
氢气
photocatalysis
electron-hole pair
benzyl alcohol
hydrogen