孔性矿渣基胶凝材料的可控制备及催化应用-张力-副本概论.docVIP

ADDIN CNKISM.UserStyle 摘要 随着纺织工业的迅速发展，染料的品种和数量日益增加，印染废水已成为水系环境的重点污染源之一，碱性紫5BN是印染废水中常见的有机染料。而矿渣作为一种固体废弃物，长期堆放不仅占用大量土地，还会造成严重的环境污染，将矿渣作为一种新型的光催化剂，用于降解染料废水中的有机染料，达到以废治废的双重目的，具有重要的理论意义和现实意义。 本文以矿渣为原料， PEG-4000为扩孔剂，制备新型孔性矿渣基胶凝材料，以该矿渣基胶凝材料为催化剂载体，通过浸渍法制备WO3/新型孔性矿渣基胶凝材料半导体复合光催化剂。采用模拟碱性紫5BN染料工业废水，并通过光催化降解，以及光催化分解水产氢两种评价体系对该半导体复合光催化剂进行评价。光催化降解染料结果表明：当扩孔剂PEG-4000为5wt%时，掺量为5wt%的WO3/新型孔性矿渣基胶凝材料半导体复合光催化剂,对碱性紫5BN染料具有最高的降解活性，在80min的时间内，0.4g催化剂对100mL的4mg/L的碱性紫5BN溶液可降解90%；光催化分解水产氢结果表明：与其它光催化剂相比，负载1%WO3的光催化剂表现出最高的产氢活性，在6h内产氢量达到116.4μmol/g。 关键词：碱激发矿渣，扩孔剂，WO3，光催化，降解，碱性紫5BN，产氢  第  PAGE 3 页 Abstract With the rapid development of the textile industry, the variety and the increasing number of dyes, printing and dyeing wastewater has become one of the major sources of pollution in the river environment, Basic Violet 5BN is the common organic dyes and dyeing wastewater. and solid waste slag as a matter, not only piled up a lot of long-term land, but also cause serious environmental pollution, the slag as a novel photocatalyst for the degradation of organic dyes wastewater, dual purpose by Waste has important theoretical and practical significance. In this paper, slag as raw materials, PEG-4000 as a swelling agent, preparation of new porous slag-based cementitious materials in the slag-based cementitious materials as catalyst supports, prepared WO3 / new porous slag-based cementitious materials by impregnation method of semiconductor composite photocatalyst. Basic Violet 5BN analog dye industrial wastewater, and through photocatalytic degradation and photocatalytic hydrogen production system of the two evaluation semiconductor composite photocatalyst was evaluated. The results showed that the photocatalytic degradation of dyes: When swelling agent is 5wt% PEG-4000, the content of 5wt% of WO3 / new po