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- 2016
HZSM-5分子筛负载SrTiO3光催化降解活性艳红X-3B
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Abstract:
采用溶胶-凝胶法制备HZSM-5分子筛负载SrTiO3，对其进行XRD、FTIR和N2吸附-脱附表征，研究负载对活性艳红X-3B光催化降解过程的影响。通过分析降解液的FTIR谱图、紫外-可见光谱和总有机碳（TOC）数据，对活性艳红X-3B的光催化降解过程进行了探讨。结果表明：催化剂的主要成分为钙钛矿结构SrTiO3，负载对SrTiO3晶粒尺寸几乎没有影响。纯SrTiO3没有明显的孔结构，负载后样品的比表面积和孔隙主要由HZSM-5提供。负载之后催化剂的降解活性显著提高，30% SrTiO3/HZSM-5对活性艳红X-3B染料溶液的脱色和TOC去除速率最快。 SrTiO3 was supported on HZSM-5 molecular sieve by sol-gel method. XRD, FTIR, and N2 adsorption-desorption measurements were carried out to study the influences of supporting on photocatalytic degradation process of reactive brilliant red X-3B. The processes in photocatalytic degradation of reactive brilliant red X-3B were discussed after analyzing the data of FTIR spectra, ultraviolet-visible spectroscopy, and total organic carbon (TOC) data of the solutions during degradation. The results show that the photocatalysts are mainly composed of perovskite SrTiO3. Crystallite size of SrTiO3 has nearly no change after supporting. Pure SrTiO3 does not have apparent porous structure, so that specific surface area and pores of the supported samples are mainly provided by HZSM-5. Photocatalytic activity of the supported catalysts is obviously improved with the fastest decoloration and TOC removal rates on 30% SrTiO3/HZSM-5 for reactive brilliant red X-3B. 国家自然科学基金青年基金（51504154）；辽宁省教育厅科技研究一般项目（L2014081）；辽宁省自然科学基金（2015020186）
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