Air purification behavior of magnesium oxychloride cement combined with Ag/AgBr particle under visible light

被引：17

作者：

Gao, Yining ^{[1
]}

Liu, Peng ^{[1
,2
]}

Wang, Fazhou ^{[1
]}

Yang, Lu ^{[1
]}

Zhang, Wenqin ^{[1
]}

Yang, Jin ^{[1
]}

Liu, Yunpeng ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China

[2] Wuhan Univ Technol, Sch Chem Chem Engn & Life Sci, Wuhan 430070, Hubei, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Magnesium oxychloride cement; Ag/AgBr; Decorating material; HCHO; Visible light; PHOTOCATALYTIC ACTIVITY; DEGRADATION; PERFORMANCE; ADSORPTION; MECHANISM;

D O I：

10.1016/j.conbuildmat.2019.03.246

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

As a promising decorating material, magnesium oxychloride (MOC) cement was characterized with a three-dimensional network composed mainly by phase 5 with needle-like structure. AgBr nanoparticle with 200 nm particle size was deposited on magnesium oxychloride cement substrate. The metallic silver nanoparticles were produced from AgBr particle with the irradiation. Thus the composite was prepared containing metallic silver, AgBr and MOC cement. The final products showed high performance for HCHO degradation. The content of magnesium oxychloride cement had an impact on degradation efficiency. The sample with the molar ratio of H2O/MgO 14 showed higher degradation efficiency than other groups. A bottle-like artwork was fabricated based on the prepared composites and tested for HCHO degradation under room temperature and daylight. HCHO with an initial concentration of 50 ppm can be degraded completely within two days. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：1034 / 1041

页数：8

共 27 条

[1] Recent Advances in Shape-Controlled Synthesis of Noble Metal Nanoparticles by Radiolysis Route [J].

Abedini, Alam ;

Bakar, Ahmad Ashrif A. ;

Larki, Farhad ;

Menon, P. Susthitha ;

Islam, Md. Shabiul ;

Shaari, Sahbudin .

NANOSCALE RESEARCH LETTERS, 2016, 11 :1-13

[2]

[Anonymous], POLYM COMPOS

[3] Microstructures of magnesium oxychloride [J].

Chau, C. K. ;

Li, Zongjin .

MATERIALS AND STRUCTURES, 2008, 41 (05) :853-862

[4] An Experimental and Computational Study of β-AgVO3: Optical Properties and Formation of Ag Nanoparticles [J].

de Oliveira, Regiane Cristina ;

Assis, Marcelo ;

Teixeira, Mayara Mondego ;

Penha da Silva, Maya Dayana ;

Li, Maximo Siu ;

Andres, Juan ;

Gracia, Lourdes ;

Longo, Elson .

JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (22) :12254-12264

[5]

Deng DH, 1999, CEMENT CONCRETE RES, V29, P1365

[6] The role of reduction extent of graphene oxide in the photocatalytic performance of Ag/AgX (X = Cl, Br)/rGO composites and the pseudo-second-order kinetics reaction nature of the Ag/AgBr system [J].

Gao, Weiyin ;

Ran, Chenxin ;

Wang, Minqiang ;

Li, Le ;

Sun, Zhongwang ;

Yao, Xi .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2016, 18 (27) :18219-18226

[7] Micromechanical investigation of magnesium oxychloride cement paste [J].

Hu, Chuanlin ;

Xu, Biwan ;

Ma, Hongyan ;

Chen, Binmeng ;

Li, Zongjin .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 105 :496-502

[8] Adsorption and visible light-driven photocatalytic degradation of Rhodamine B in aqueous solutions by Ag@AgBr/SBA-15 [J].

Hu, Longxing ;

Yuan, Hang ;

Zou, Lianpei ;

Chen, Feiyan ;

Hu, Xing .

APPLIED SURFACE SCIENCE, 2015, 355 :706-715

[9]

Ji YS, 2002, MATER LETT, V56, P353, DOI 10.1016/S0167-577X(02)00484-6

[10] Photocatalytic degradation of textile dye X-3B using polyoxometalate-TiO2 hybrid materials [J].

Jin, Hongxiao ;

Wu, Qingyin ;

Pang, Wenqin .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 141 (01) :123-127

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