生物质化学工程2017，Vol.51Issue(3)：7-13,7.DOI:10.3969/j.issn.1673-5854.2017.03.002
冬瓜基含TiO2炭气凝胶的制备、表征及其光催化性能
Preparation,Characterization and Photocatalytic Property of Wintermelon-based TiO2 Carbonaceous Aerogels
摘要
Abstract
Wintermelon-based TiO2 carbonaceous aerogel(WTCA) composites were prepared by hydrothermal reaction and freeze drying process with wintermelon and tetrabutyl titanate as precursor.The Rhodamine B(RhB) wastewater was photodegraded by WTCA under visible light irradiation.The effects of various common inorganic salt ions in water on the photodegradation were also studied systematically.The morphology structure and properties of as-prepared samples were characterized by using X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),Raman spectrometer,and fluorescence spectroscopy(FL).XRD,Raman and EDS analysis results showed that anatase titanium oxide and carbon element appeared in the WTCA.SEM and TEM analysis results showed that TiO2 nanoparticles were homogeneously anchored on the skeleton surface of hierarchical carbonaceous aerogels.Meanwhile the composite aerogels exhibited better photodegradation capacities for the RhB than pure TiO2.The photocatalytic effect of WTCA had the best photocatalytic efficiency(96.11%) when TiO2 load up to 30%.Moreover,the inorganic salt anion ions had the negative effect on photodegradation effect with the order of CO2-3>SO2-4>Cl->NO-3 while the inhibitory effects of cationic ions(Na+,K+,Ca2+ and Mg2+) were not obvious.关键词
冬瓜基炭气凝胶/二氧化钛/光催化活性/无机盐离子Key words
wintermelon-based carbonaceous aerogels/TiO2/photodegradation efficiency/inorganic salt ions分类
化学化工引用本文复制引用
魏巍,曾黔,陆俊炜,韩合坤,朱建军,谢吉民..冬瓜基含TiO2炭气凝胶的制备、表征及其光催化性能[J].生物质化学工程,2017,51(3):7-13,7.基金项目
国家自然科学青年基金资助项目(51402130) （51402130）
中国博士后科学基金资助项目(2016M590421) （2016M590421）
