光催化胶凝复合材料：添加转炉炉渣增强空气净化性能

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement & concrete composites Pub Date : 2025-07-16 DOI:10.1016/j.cemconcomp.2025.106244

Daoru Liu , J.C.O. Zepper , Koh Chuen Hon , Yuxuan Chen , Qingliang Yu

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引用次数: 0

摘要

本文研究了转炉炉渣作为光催化氧化氮减排胶凝载体的利用，并对其解决环境问题的潜力进行了探索性研究。采用XRD、FTIR和TGA对转炉炉渣基砂浆的物相组成进行了研究，并用XPS和MIP分别对其结合能和微观结构进行了研究。对制备的砂浆光催化降解NO的性能进行了表征。未添加TiO2的转炉渣基砂浆转化率约为10%，选择性为97%。此外，当TiO2光催化剂用量相同（5 wt%）时，BOF渣基砂浆的光催化性能优于opc基砂浆。石英的加入对转化率影响不显著，但显著降低了选择性。这些发现强调了转炉炉渣作为光催化NOx减排的替代支持材料的潜力，为其在可持续环境修复策略中的应用提供了见解。指出了本研究的局限性，并提出了今后的研究方向。

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Photocatalytic cementitious composites: enhanced air purification performance by BOF slag addition

This paper investigates the utilization of BOF slag as a cementitious support for photocatalytic nitrogen oxides abatement, presenting an exploratory study on its potential to address environmental concerns. The phase composition of BOF slag-based mortars is studied using XRD, FTIR, and TGA, while binding energy and microstructure are investigated with XPS and MIP, respectively. The photocatalytic NO_x degradation properties of as-prepared mortars are characterized. The BOF slag-based mortar without TiO₂ addition exhibits a %Conversion of about 10 % and a %Selectivity of 97 %. Furthermore, the BOF slag-based mortar demonstrates better photocatalytic properties than the OPC-based mortar when the same amount (5 wt%) of TiO₂ photocatalyst is used. The addition of quartz insignificantly affects the %Conversion but significantly lowers the %Selectivity. These findings underscore the potential of BOF slag as a promising alternative support material for photocatalytic NO_x abatement, offering insights into its application in sustainable environmental remediation strategies. The limitations of this study are revealed, and future research directions are proposed.

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.