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ZnO和ZnO/C光催化涂料的制备及其去除NO性能研究
作者：代少俊1，王成双1，刘媛2，崔恩田1，董鹏玉1，许宁1，张勤芳1，侯贵华1，2
（1.盐城工学院 江苏省环保重点实验室，江苏 盐城 224051；2.常州大学 材料科学与工程学院，江苏 常州 213100）
摘要：以乙酸锌为原料、无水乙醇为溶剂、二乙醇胺为络合剂，通过溶胶-凝胶法制得前驱体，将该前驱体分别在空气和N2气氛中煅烧，制备ZnO和ZnO/C两种光催化剂。以硅溶胶/硅酸钾溶液与氟碳乳液为基料制备ZnO和ZnO/C两种光催化涂料。通过XRD、SEM、UV-Vis等手段对两种光催化剂进行表征，并测试涂料的性能及涂料去除NO的效果。结果表明：ZnO/C中C的质量含量为8.0%；ZnO和ZnO/C中的ZnO均为六方纤锌矿结构，ZnO/C中ZnO形貌呈六方纤维状；ZnO/C的比表面积为24.5 m2/g，光吸收边为408 nm，对应禁带宽度2.96 eV。光催化测试结果表明，在氙灯照射70 min时，质量掺量为1.0%的ZnO和ZnO/C光催化涂料对NO的去除率分别为37.8%和77.5%。
关键词：ZnO；ZnO/C；光催化剂；光催化涂料；去除NO
中图分类号：TU56+1.69 文献标识码：A 文章编号：1001-702X（2017）05-0001-04
摘要：以乙酸锌为原料、无水乙醇为溶剂、二乙醇胺为络合剂，通过溶胶-凝胶法制得前驱体，将该前驱体分别在空气和N2气氛中煅烧，制备ZnO和ZnO/C两种光催化剂。以硅溶胶/硅酸钾溶液与氟碳乳液为基料制备ZnO和ZnO/C两种光催化涂料。通过XRD、SEM、UV-Vis等手段对两种光催化剂进行表征，并测试涂料的性能及涂料去除NO的效果。结果表明：ZnO/C中C的质量含量为8.0%；ZnO和ZnO/C中的ZnO均为六方纤锌矿结构，ZnO/C中ZnO形貌呈六方纤维状；ZnO/C的比表面积为24.5 m2/g，光吸收边为408 nm，对应禁带宽度2.96 eV。光催化测试结果表明，在氙灯照射70 min时，质量掺量为1.0%的ZnO和ZnO/C光催化涂料对NO的去除率分别为37.8%和77.5%。
关键词：ZnO；ZnO/C；光催化剂；光催化涂料；去除NO
中图分类号：TU56+1.69 文献标识码：A 文章编号：1001-702X（2017）05-0001-04
Study on preparation of the ZnO and ZnO/C photocatalytic coatings and its performance of NO abatement
DAI Shaojun1，WANG Chengshuang1，LIU Yuan2，CUI Entian1，DONG Pengyu1，XU Ning1，ZHANG Qinfang1，HOU Guihua1，2
DAI Shaojun1，WANG Chengshuang1，LIU Yuan2，CUI Entian1，DONG Pengyu1，XU Ning1，ZHANG Qinfang1，HOU Guihua1，2
（1.Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province，Yancheng Institute of Technology，Yancheng 224051，China；2.College of Materials Science and Engineering，Changzhou University，Changzhou 213100，China）
Abstract：The precursor was obtained from using zinc acetate，anhydrous ethanol and diethanol amine as complexing agent by sol-gel method. ZnO and ZnO/C photocatalyst were prepared using the precursor through calcination in air and N2 atmosphere，respectively. The ludox/potassium silicate and fluorocarbon paint emulsion was binder to fabricate the ZnO and ZnO/C photocatalytic coatings. The ZnO and ZnO/C photocatalysts were characterized by XRD，SEM and UV-Vis. The properties of coating and the effect of NO abatement were investigated. The results indicated that the mass content of C in ZnO/C photocatalyst was 8.0%. The ZnO structures in ZnO and ZnO/C both were hexagonal wurtzite，and the ZnO structures in ZnO/C was hexagonal threadiness. The specific surface area of ZnO/C is 24.5 m2/g. The optical absorption edge of ZnO/C is 408 nm and the band-gap energy reduces to 2.96 eV. The photocatalytic activity test results showed that the NO reduction rate of photocatalytic coatings incorporating 1.0% of ZnO and ZnO/C were 37.8% and 77.5% under xenon lamp irradiation within 70 min.
Key words：ZnO，ZnO/C，photocatalytic coating，NO reduction
Key words：ZnO，ZnO/C，photocatalytic coating，NO reduction