摘要
利用不同浓度的H_(2)SO_(4)对水热法制备的Bi_(2)WO_(6)进行处理,通过H_(2)SO_(4)的腐蚀作用制备具有Bi缺陷型的Bi_(2)WO_(6)。探究了催化剂在可见光下对甲苯的降解效果,结果表明,相比于纯Bi_(2)WO_(6),经1mol/L H_(2)SO_(4)处理的Bi_(2)WO_(6)表现出更好的光催化降解效果,在可见光下照射180min后对甲苯降解率达到82%。这主要是因为Bi缺陷型Bi_(2)WO_(6)在H_(2)SO_(4)强质子化能力下周围有大量的质子化—OH基团,能有效捕获光生电子,从而提高电子-空穴的分离效率。
Bi_(2)WO_(6) prepared by hydrothermal method were treated by H_(2)SO_(4) with different concentrations.And Bi_(2)WO_(6) with Bi defect was synthesized through the corrosion of H_(2)SO_(4).The degradation activity of the catalyst to toluene was explored under visible light.The results showed that Bi_(2)WO_(6) treated with 1M H_(2)SO_(4) showed better photocatalytic degradation effect than pure Bi_(2)WO_(6),and the degradation rate can reached 82%in 180min under visible light.This is mainly because Bi-deficient Bi_(2)WO_(6)has a large number of protonated—OH groups around it under the strong protonation force of H_(2)SO_(4),which can effectively capture photogenerated electrons and improve the separation efficiency of electron-interaction.
作者
朱瑜瑜
韩粉女
于凉云
张荣成
许琦
Zhu Yuyu;Han Fennv;Yu Liangyun;Zhang Rongcheng;Xu Qi(School of Petrochemical Engineering,Changzhou University,Changzhou 213100;School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051;Beijing Technology and Business University,Beijing 100048;Lianyungang Technical College,Lianyungang 222006)
出处
《化工新型材料》
CAS
CSCD
北大核心
2022年第3期220-225,共6页
New Chemical Materials
基金
国家自然科学基金(21802119、21906140)。
