食品科学2025，Vol.46Issue(22)：72-79,8.DOI:10.7506/spkx1002-6630-20250320-159
核黄素敏化二氧化钛光催化剂的制备及其对新型食源性危害物1,3,6,8-四溴咔唑光催化降解性能
Preparation of Riboflavin-Sensitized Titanium Dioxide Photocatalysts and Their Photocatalytic Degradation of the Emerging Foodborne Hazard 1,3,6,8-Tetrabromocarbazole
摘要
Abstract
In this study,two types of riboflavin-sensitized titanium dioxide(TiO2)nanocomposite photocatalysts,TiO2@Rib and Rib@TiO2,were prepared using the rotary evaporation method and the adsorption method,respectively.Ultraviolet-visble spectroscopy(UV-Vis)analysis revealed that the sensitization effect of riboflavin extended the light absorption range of both composite photocatalysts from the ultraviolet region to the visible region.Scanning electron microscopy(SEM)and infrared spectroscopy analysis demonstrated that in TiO2@Rib,riboflavin was loaded in a non-aggregated form within the nanochannels,while in Rib@TiO2,riboflavin crystals were adsorbed on the surface of TiO2.Additionally,TiO2@Rib solution was stored for five days without exhibiting any significant precipitation,indicating its exceptional dispersion stability in water.Furthermore,TiO2@Rib demonstrated the highest generation capacity of singlet oxygen(1O2)and hydroxyl radicals(·OH).After 60 min of irradiation under a 450 nm blue LED matrix light source,the degradation rate of 1,3,6,8-tetrabromocarbazole,an emerging foodborne hazard,by TiO2@Rib was 56.41%,which was 1.64-fold higher than that of riboflavin.This study provides new insights and experimental evidence for optimizing the construction of low-toxicity,high-efficiency food pigment-sensitized TiO2 composite photocatalysts and their application in the photocatalytic degradation of emerging foodborne hazards in aquatic products.关键词
核黄素/二氧化钛/染料敏化/光催化降解/1,3,6,8-四溴咔唑Key words
riboflavin/TiO2/dye sensitization/photocatalytic degradation/1,3,6,8-tetrabromocarbazole分类
环境科学引用本文复制引用
李洁,张冰清,魏然,焦龙,张晓晔,陈翔,张宾..核黄素敏化二氧化钛光催化剂的制备及其对新型食源性危害物1,3,6,8-四溴咔唑光催化降解性能[J].食品科学,2025,46(22):72-79,8.基金项目
浙江省市场监督管理局科技计划项目(ZD2025024) （ZD2025024）
浙江省教育厅一般科研项目(Y202457281) （Y202457281）
