ZnO@硅胶复合催化剂对藏红T的光催化降解性能探究  

Study on the photocatalytic degradation performance of ZnO@Silica gel composite catalyst for safranine T

作　　者：李素云[1] 付山 田艺 于嵩淏 雷珺宇 张蔚 王科峰[2] 郝海军[1] 徐庆红[1] LI Suyun;FU Shan;TIAN Yi;YU Songhao;LEI Junyu;ZHANG Wei;WANG Kefeng;HAO Haijun;XU Qinghong(State Key Laboratory of Chemical Resource Engineering,college of chemistry,Beijing University of Chemical Technology,Beijing 100029,China;Petrochemical Research Institute,PetroChina Company Limited,Beijing 102200,China)

机构地区：[1]北京化工大学化学学院,化工资源有效利用国家重点实验室,北京100029 [2]中国石油天然气股份有限公司石油化工研究院,北京102200

出　　处：《化学研究》2023年第5期405-414,共10页Chemical Research

基　　金：国家自然科学基金资助(U1362113);中国石油天然气股份有限公司石油化工研究院委托技术开发项目(PRIKY22004)。

摘　　要：采用葡萄糖分子隔离法制备了形貌规整、粒径大约为0.5μm的硅胶微球,然后以合成的硅胶微球为载体、乙酸锌为锌源合成了ZnO@硅胶负载型复合催化剂,详细探究了紫外光条件下对藏红T的降解效果。实验发现,当采用相同量(10 mg)ZnO@硅胶催化剂与纯ZnO粒子(粒径大约为100 nm)分别对藏红T进行催化降解40 min后,ZnO@硅胶催化剂的降解率(约为91%)远高于纯氧化锌(约为46%)。并且发现负载的ZnO摩尔百分含量为4.6%时,室温下20 mg的ZnO@硅胶催化剂在紫外光照射下,40 min内可将100 mL、10 mg/L的藏红T完全降解,其降解效果要高于目前文献报道的其他催化剂(包括负载型复合催化剂)。In this work,silica gel microspheres with regular morphology and particle size of about 0.5μm were prepared by glucose molecular interval method,ZnO@silica gel supported catalyst was synthesized with silica gel microspheres as carrier and zinc acetate as zinc source,the degradation effect of safranine T under ultraviolet light was investigated in detail.It was found that when the same amount(10 mg)of ZnO@silica gel catalyst and pure ZnO particles(particle size about 100 nm)were used to catalyze the degradation of safranine T for 40 min,the degradation rate of ZnO@silica gel catalyst(about 91%)was much higher than that of pure zinc oxide(about 46%).It was also found that when the molar percentage of ZnO supported was 4.6%,100 mL and 10 mg/L safranine T could be completely degraded by 20 mg ZnO@silica gel catalyst under ultraviolet irradiation at room temperature within 40 min,and its degradation effect was higher than that of other catalysts(including supported composite catalysts)reported in the literature at present.

关 键 词：氧化锌 复合催化剂 光催化 藏红T 

分 类 号：O643.3[理学—物理化学]