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浙江大学学报(工学版)
Journal of ZheJiang University (Engineering Science)  2021, Vol. 55 Issue (4): 713-719    DOI: 10.3785/j.issn.1008-973X.2021.04.013
    
Characterization and synthesis of hollow glass microspheres/nano-TiO2 composite material
Shou-jing YAN1(),Yang-yang WANG1,*(),Feng-xia CHI1,Xue LUO2
1. Institute of Road Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, China
2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
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Abstract  

A photocatalytic composite material was prepared by cold-alkali corrosion treatment and high-temperature adhesion technique in order to obtain a photocatalytic composite material with high catalytic activity and good wear resistance. Then scanning electron microscope (SEM), X-ray diffraction (XRD) and UV-Vis and other equipment were used to characterize the sample. The anti-wearing performance and photocatalytic of this composite material were tested by kneading machine and custom-designed environmental test setup, respectively, using exhaust gas of automobile. Results showed that nano-TiO2 embedded on the surface of hollow glass microspheres homogeneously. Hollow glass microspheres/nano-TiO2 composite photocatalyst has higher light transmission ability and degradation efficiency than pure nano-TiO2. The composite material has significant degradation effects on nitric oxide and nitrogen dioxide in automobile exhaust. The purification effect of nitrogen oxides is higher than carbon monoxide and sulfur dioxide, and has good anti-wearing ability.

Key words： hollow glass bead      nano-TiO2      composite material      photocatalytic property     
Received: 25 February 2020      Published: 07 May 2021
CLC:  O 649  
Fund:  浙江省自然科学基金资助项目（LQY18E080001）；浙江省交通运输厅资助项目（2019054）
Corresponding Authors: Yang-yang WANG     E-mail: ysjgalaxy@163.com;profxnzhang@126.com
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Shou-jing YAN
Yang-yang WANG
Feng-xia CHI
Xue LUO
Cite this article:

Shou-jing YAN,Yang-yang WANG,Feng-xia CHI,Xue LUO. Characterization and synthesis of hollow glass microspheres/nano-TiO2 composite material. Journal of ZheJiang University (Engineering Science), 2021, 55(4): 713-719.

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http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2021.04.013     OR     http://www.zjujournals.com/eng/Y2021/V55/I4/713


空心玻璃微珠/纳米TiO2复合材料的制备与表征

为了获得催化活性高、抗磨耗性能强的光催化复合材料，研究通过冷-碱腐蚀处理手段和高温黏附技术，制备空心玻璃微珠-纳米TiO2光催复合材料. 利用扫描电子显微镜(SEM)、X射线衍射(XRD)和UV-Vis等设备，对样品进行表征. 以汽车尾气为降解对象，采用搓揉试验机和自制的环境测试系统，分别测试复合材料的抗磨耗性能与光催化效能. 结果表明，纳米TiO2能够较好地附着到空心玻璃微珠表面，空心玻璃微珠-纳米TiO2光催化复合材料相对于纯纳米TiO2具有更强的透光能力和光催化降解能力. 该复合材料对汽车尾气中的一氧化氮和二氧化氮均有显著的降解效果，氮氧化物的净化效果高于一氧化碳和二氧化硫，具有较好的抗磨耗能力.


关键词： 空心玻璃微珠,  纳米TiO2,  复合材料,  光催化性能 
组号 试件数量 $m$/g
BG 3 0
HGM 3 0
TiO2 3 1.601
HGM-TiO2 3 1.601
Tab.1 Effective content of nano-TiO2 in per unit composite catalyst
Fig.1 Testing process of photocatalytic performance
Fig.2 Kneading machine
Fig.3 SEM images of samples at different magnification
Fig.4 X-ray diffraction patterns of different samples
Fig.5 Transmission spectrum of hollow glass bead，nano-TiO2 and hollow glass bead-TiO2
降解
对象 		纳米TiO2 空心玻璃微珠-纳米TiO2复合材料
${V_{\max }}$/(mg·m?3·min?1) $K$/% ${V_{\max }}$/(mg·m?3·min?1) $K$/%
NO 2.34 88.24 3.41 89.38
NO2 1.20 88.89 1.70 91.67
CO 17.1 9.47 22.90 14.52
SO2 1.29 9.70 1.51 12.00
Tab.2 Evaluation results of exhaust degradation effects in single stage
Fig.6 Remove efficiency of NO，NO2，SO2 and CO
Fig.7 Residual remove efficiency of NO，NO2，SO2 and CO
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