GO/BiOI复合材料的制备及光催化降解刚果红研究  

Synthesis of GO/BiOI composites for photocatalytic degradation of congo red

作　　者：全玉莲 梁雅洁 程颖 张桂芹 李凤鑫 赵洁妤 QUAN Yulian;LIANG Yajie;CHENG Ying;ZHANG Guiqin;LI Fengxin;ZHAO Jieyu(Department of Environmental Engineering,Hebei University of Environmental Engineering,Qinhuangdao 066102,China;Key Laboratory of Environment Function Material,Qinhuangdao,Qinhuangdao 066102,China;Yongji Country Municipal Engineering Service Center,Jilin 132200,China)

机构地区：[1]河北环境工程学院环境工程系,河北秦皇岛066102 [2]秦皇岛市环境功能材料重点实验室,河北秦皇岛066102 [3]永吉县市政工程服务中心,吉林吉林132200

出　　处：《功能材料》2025年第4期4221-4227,共7页Journal of Functional Materials

基　　金：河北省优秀专家出国培训项目(201917);河北省高等学校科学技术研究项目(BJK2022058)。

摘　　要：采用简单的微波辅助溶剂热法成功制备了氧化石墨烯/碘氧化铋(GO/BiOI)复合材料,对其物相结构、微观形貌、光谱特征等进行了表征。在LED可见光下,对GO/BiOI光催化降解刚果红(CR)的性能进行研究,探究了GO含量、催化剂用量和pH值对GO/BiOI光催化活性的影响。结果表明,GO的引入未改变BiOI的物相,GO/BiOI复合材料的带隙宽度为2.06 eV,两者形成的异质结构明显拓宽光吸收范围。引入的GO有助于促进界面电荷迁移,降低电子-空穴对的复合几率。与BiOI相比,经LED光照100 min后,1%GO/BiOI对CR的降解率由48.5%提高到87.5%。A facile microwave-assisted solvothermal method was successfully used to prepare graphene oxide/bismuth oxyiodide(GO/BiOI)composites,which were characterized for their phase structure,micro-morphology,and spectral properties.Under LED visible light,the photocatalytic degradation performance of GO/BiOI for congo red(CR)was studied,and the effects of GO content,catalyst dosage,and pH on the photocatalytic activity of GO/BiOI were investigated.The results showed that the introduction of GO did not alter the phase of BiOI,and the bandgap width of the GO/BiOI composite was 2.06 eV.The heterogeneous structure formed by GO and BiOI significantly broadened the light absorption range.The incorporation of GO facilitated interfacial charge transfer and reduced the recombination probability of electron-hole pairs.Compared to BiOI,after 100 minutes of LED illumination,the degradation rate of CR by 1 wt%GO/BiOI increased from 48.5%to 87.5%.

关 键 词：碘氧化铋 氧化石墨烯 发光二极管(LED) 光催化 刚果红 

分 类 号：O644.1[理学—物理化学] O643.36[理学—化学]