原位光催化水泥基材料的制备及性能

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (10): 3369-3376.

原位光催化水泥基材料的制备及性能

李俊杰¹, 刘海龙², 杨广磊², 张丽娜¹, 姜葱葱¹, 程新¹, 王丹¹

1.济南大学,山东省建筑材料制备与测试技术重点实验室,济南 250022;
2.山东华邦建设集团有限公司,青州 262500

收稿日期:2022-05-18 修回日期:2022-07-31 出版日期:2022-10-15 发布日期:2022-10-26
通讯作者: 程新,博士,教授。E-mail:ujn_chengxin@163.com;王丹,博士,副教授。E-mail:ujn_danwang@163.com
作者简介:李俊杰(1999—),男,硕士研究生。主要从事水泥基材料功能改性的研究。E-mail:956540202@qq.com
基金资助:
国家自然科学基金(51902129);山东省泰山学者攀登计划;济南市支持顶尖人才(团队)创新创业“一事一议”项目

Preparation and Properties of In-Situ Photocatalytic Cement-Based Materials

LI Junjie¹, LIU Hailong², YANG Guanglei², ZHANG Lina¹, JIANG Congcong¹, CHENG Xin¹, WANG Dan¹

1. Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China;
2. Shandong Winbond Construction Group Co., Ltd., Qingzhou 262500, China

Received:2022-05-18 Revised:2022-07-31 Online:2022-10-15 Published:2022-10-26

摘要/Abstract

摘要： 光催化剂在水泥基材料中的分散性问题一直是制约光催化水泥基材料性能的主要因素之一。本文通过在水泥基材料成型过程中加入铋系光催化前驱体溶液实现原位光催化水泥基材料的合成,提高光催化剂在水泥基体中的分散性,赋予水泥基材料光催化性能的同时改善水泥基体抗压强度。通过扫描电镜和EDS能谱对光催化水泥基材料微观结构和成分进行表征。结果表明,光催化水泥基材料对罗丹明B的降解效率最高可达91.64%,对氮氧化物的降解效率最高可达到15.03%,早期机械强度提升约10%。光催化剂在水泥基体中分散更加均匀,同时水泥基体致密度提高。本文揭示了原位光催化水泥基材料的光催化性能与机械性能的提升机制,为其他功能性水泥基材料的制备提供了理论基础。

关键词: 原位合成, 光催化, BiOX, 水泥, 微观结构表征, 机械强度

Abstract: The dispersibility of photocatalysts in cement-based materials has always been one of the important factors restricting the performance of photocatalytic cement-based materials. In this paper, photocatalytic cement-based materials were in-situ synthetized by adding bismuth-based photocatalytic precursor solutions in the molding process of cement-based materials. The dispersion of photocatalysts in cement matrix was improved. The photocatalytic properties to cement-based materials were imparted and the compressive strength of cement matrix was improved.The microstructure and composition of photocatalytic cement-based materials were characterized by scanning electron microscopy and EDS energy spectroscopy.The results show that the rhodamine B degradation efficiency of photocatalytic cement-based materials reaches up to 91.64%. The degradation efficiency of nitrogen oxides reaches up to 15.03%, and the early mechanical strength increases by about 10%.The photocatalyst is more uniformly dispersed in the cement matrix, and the density of cement matrix is improved. In this paper, the photocatalytic performance and mechanical performance improvement mechanism of in-situ photocatalytic cement-based materials are revealed, which provides a theoretical basis for the preparation of other functional cement-based materials.

Key words: in-situ synthesis, photocatalysis, BiOX, cement, microstructure characterization, mechanical strength

中图分类号:

李俊杰, 刘海龙, 杨广磊, 张丽娜, 姜葱葱, 程新, 王丹. 原位光催化水泥基材料的制备及性能[J]. 硅酸盐通报, 2022, 41(10): 3369-3376.

LI Junjie, LIU Hailong, YANG Guanglei, ZHANG Lina, JIANG Congcong, CHENG Xin, WANG Dan. Preparation and Properties of In-Situ Photocatalytic Cement-Based Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(10): 3369-3376.

参考文献

[1] 白静.关于城市大气污染现状与综合防治对策研究[J].绿色环保建材,2021(12):55-56.
BAI J. Study on the present situation of urban air pollution and comprehensive prevention and control countermeasures[J]. Green Environmental Protection Building Materials, 2021(12): 55-56 (in Chinese).
[2] 吴茜茜.新冠肺炎与空气污染的研究进展[J].能源与环境,2021(6):94-96.
WU Q Q. Research progress of COVID-19 and air pollution[J]. Energy and Environment, 2021(6): 94-96 (in Chinese).
[3] HENDRYX M, LUO J H. COVID-19 prevalence and fatality rates in association with air pollution emission concentrations and emission sources[J]. Environmental Pollution, 2020, 265: 115126.
[4] 曹雅丽.进入绿色低碳转型阶段建材业平稳运行有支撑[N].中国工业报,2022-01-14(1).
CAO Y L. Entering the stage of green and low-carbon transformation, the smooth operation of the building materials industry is supported[N]. China Industry News, 2022-01-14(1) (in Chinese).
[5] GENG Z, XIN M Y, ZHU X T, et al. A new method for preparing photocatalytic cement-based materials and the investigation on properties and mechanism[J]. Journal of Building Engineering, 2021, 35: 102080.
[6] HAKKI A, YANG L, WANG F Z, et al. Photocatalytic functionalized aggregate: enhanced concrete performance in environmental remediation[J]. Buildings, 2019, 9(2): 28.
[7] MACPHEE D E, FOLLI A. Photocatalytic concretes: the interface between photocatalysis and cement chemistry[J]. Cement and Concrete Research, 2016, 85: 48-54.
[8] FOLLI A, JAKOBSEN U H, GUERRINI G L, et al. Rhodamine B discolouration on TiO₂ in the cement environment: a look at fundamental aspects of the self-cleaning effect in concretes[J]. Journal of Advanced Oxidation Technologies, 2009, 12(1): 126-133.
[9] FOLLI A, PADE C, HANSEN T B, et al. TiO₂ photocatalysis in cementitious systems: insights into self-cleaning and depollution chemistry[J]. Cement and Concrete Research, 2012, 42(3): 539-548.
[10] BENGTSSON N, CASTELLOTE M. Heterogeneous photocatalysis on construction materials: effect of catalyst properties on the efficiency for degrading NO_x and self cleaning[J]. Materiales De Construcción, 2014, 64(314): e013.
[11] JIMENEZ-RELINQUE E, CASTELLOTE M. Influence of the inlet air in efficiency of photocatalytic devices for mineralization of VOCs in air-conditioning installations[J]. Environmental Science and Pollution Research, 2014, 21(19): 11198-11207.
[12] 王志鸽,魏晶晶,王慧春.二氧化钛光催化技术在水质处理中的应用进展[J].广州化工,2020,48(6):27-29+32.
WANG Z G, WEI J J, WANG H C. Application progress of titanium dioxide photocatalytic technology in water treatment[J]. Guangzhou Chemical Industry, 2020, 48(6): 27-29+32 (in Chinese).
[13] SERPONE N. Heterogeneous photocatalysis and prospects of TiO₂-based photocatalytic DeNO_xing the atmospheric environment[J]. Catalysts, 2018, 8(11): 553.
[14] CASSAR L. Photocatalysis of cementitious materials: clean buildings and clean air[J].MRS Bulletin, 2004, 29(5): 328-331.
[15] ZHANG K L, LIU C M, HUANG F Q, et al. Study of the electronic structure and photocatalytic activity of the BiOCl photocatalyst[J]. Applied Catalysis B: Environmental, 2006, 68(3/4): 125-129.
[16] NAVA-NÚÑEZ M Y, JIMENEZ-RELINQUE E, GRANDE M, et al. Photocatalytic BiOX mortars under visible light irradiation: compatibility, NO_x efficiency and nitrate selectivity[J]. Catalysts, 2020, 10(2): 226.
[17] FENG P, CHANG H L, LIU X, et al. The significance of dispersion of nano-SiO₂ on early age hydration of cement pastes[J]. Materials & Design, 2020, 186: 108320.
[18] GAO X Y, TANG G B, PENG W, et al. Surprise in the phosphate modification of BiOCl with oxygen vacancy: in situ construction of hierarchical Z-scheme BiOCl-OV-BiPO₄ photocatalyst for the degradation of carbamazepine[J]. Chemical Engineering Journal, 2019, 360: 1320-1329.
[19] WANG D, HOU P K, YANG P, et al. BiOBr@SiO₂ flower-like nanospheres chemically-bonded on cement-based materials for photocatalysis[J]. Applied Surface Science, 2018, 430: 539-548.
[20] YUE P, ZHANG G Q, CAO X Z, et al. In situ synthesis of Z-scheme BiPO₄/BiOCl_0.9I_0.1 heterostructure with multiple vacancies and valence for efficient photocatalytic degradation of organic pollutant[J]. Separation and Purification Technology, 2019, 213: 34-44.
[21] LIU Y Z, XU J, WANG L Q, et al. Three-dimensional BiOI/BiOX (X=Cl or Br) nanohybrids for enhanced visible-light photocatalytic activity[J]. Nanomaterials (Basel, Switzerland), 2017, 7(3): 64.
[22] JIMENEZ-RELINQUE E, RODRIGUEZ-GARCIA J R, CASTILLO A, et al. Characteristics and efficiency of photocatalytic cementitious materials: type of binder, roughness and microstructure[J]. Cement and Concrete Research, 2015, 71: 124-131.
[23] 徐鑫.BiOCl复合材料的制备及其光催化性能的研究[D].淮南:安徽理工大学,2016.
XU X. Preparation and photocatalytic activity of BiOCl composite photocatalyst[D]. Huainan: Anhui University of Science & Technology, 2016 (in Chinese).