随着人们生活水平的提高,室内空气质量越来越受到关注。挥发性有机物(VOCs)是影响室内空气质量的有害气体。因此,对于室内VOCs的有效去除已经成为空气治理中的研究热点。TiO2光催化剂具有光转换和无二次污染等特点被广泛应用于治理VOCs领域中。然而其在可见光范围内的响应较弱和光生电荷载流子的分离效率低等问题,限制了其光催化降解效果。对TiO2进行改性处理是当下改善其光催化作用的必要手段。简单介绍了TiO2光催化的基本原理,基于光催化原理概述影响TiO2光催化性能的因素,对近年TiO2的改性设计研究进行归纳总结,同时表明了TiO2降解室内VOCs具有广阔的应用前景。
With the improvement of people's living standards,indoor air quality is a growing concern.Volatile organic compounds (VOCs) are harmful gases that affect indoor air quality.Therefore,the effective removal of indoor VOCs has become a hot research topic in air treatment.Titanium dioxide (TiO2) photocatalysts are widely used in the field of VOCs treatment because of their light conversion and no secondary pollution.However,its weak response in the visible light range and low separation efficiency of photogenerated charge carriers limit its photocatalytic degradation effect.The modification of TiO2 is a necessary means to improve its photocatalytic effect nowadays.This paper briefly introduced the basic principles of TiO2 photocatalysis,outlined the factors affecting the photocatalytic performance of TiO2 based on the photocatalytic principles,summarised the recent research on the modification design of TiO2,and showed that the TiO2 degradation of indoor VOCs had a broad application prospect.
[1] 樊娜,刘聪,黄衍,等.我国健康建筑中VOC污染控制研究进展及思考[J].科学通报,2020,65(4):263-273.
[2] Lamonier J F.Catalytic removal of volatile organic compounds[J].Catalysts,2016,6(7),https://doi.org/10.3390/catal6010007.
[3] Sarvalkar P D,Barawkar S D,Karvekar O S,et al.A review on multifunctional nanotechnological aspects in modern textile[J].Journal of the Textile Institute,2022,114:1-18.
[4] Liu C,Gao J.Analysis on the hazard control technology of volatile organic compounds[J].IOP Conference Series:Earth and Environmental Science,2021,791(1):012166.
[5] Wang X C,Song Y Y,Han Q X.Research progress of photocatalytic degradation of indoor formaldehyde[J].Journal of Functional Biomaterials,2021,52(5):5076.
[6] Chen H Y,Liu J M,Yuan S Y,et al.Fabrication of Fe3O4@C core-shell particles and its application in UV-Fenton oxidize removal of VOCs[J].Chinese Journal of Engineering,2017,39(8):1166-1173.
[7] Yang C,Miao G,Pi Y,et al.Abatement of various types of VOCs by adsorption/catalytic oxidation:a review[J].Chemical Engineering Journal,2019,370:1128-1153.
[8] Li X,Ma J,Ling X.Design and dynamic behaviour investigation of a novel VOC recovery system based on a deep condensation process[J].Cryogenics,2020,107:103060.
[9] Li T,Li H,Li C.A review and perspective of recent research in biological treatment applied in removal of chlorinated volatile organic compounds from waste air[J].Chemosphere,2020,250:126338.
[10] Chen Z,Lin X,Zhang S,et al.Thermal cotreatment of municipal solid waste incineration fly ash with sewage sludge for PCDD/Fs decomposition and reformation suppression[J].Journal of Hazardous Materials,2021,416:126216.
[11] 郑锋,郭敏,张梅.水热法制备WO3纳米棒阵列及其光催化性能[J].北京科技大学学报,2014,36(6):810-816.
[12] Li Z,Liu J,Gao B,et al.Cu-Mn-CeOx loaded ceramic catalyst for non-thermal sterilization and microwave thermal catalysis of VOCs degradation[J].Chemical Engineering Journal,2022,442:136288.
[13] 吴晓春.挥发性有机物的危害和治理策略分析[J].化工设计通讯,2022,48(9):80-82.
[14] Sato S.Photocatalytic activity of NOx-doped TiO2 in the visible light region[J].Chemical Physics Letters,1986,123(1-2):126-128.
[15] Asahi R,Morikawa T,Ohwaki T,et al.Visible-light photocatalysis in nitrogen-doped titanium oxides[J].Science,2001,293(5528):269-271.
[16] 朱文怡,申申,王鸿博,等.N掺杂TiO2光催化剂的制备及其降解液相甲醛的应用[J].材料科学与工程学报,2022,40(4):657-662.
[17] Choi Y,Umebayashi T,Yoshikawa M.Fabrication and characterization of C-doped anatase TiO2 photocatalysts[J].Journal of Materials Science,2004,39(5):1837-1839.
[18] Umebayashi T,Yamaki T,Yamamoto S,et al.Visible light induced degradation of methylene blue on S-doped TiO2[J].Chemistry Letters,2003,32(4):330-331.
[19] 周武艺,曹庆云,唐绍裘,等.硫掺杂对纳米TiO2的结构相变及可见光催化活性的影响[J].中国有色金属学报,2006,16(7):1233-1238.
[20] Wang J,Yin S,Zhang Q,et al.Mechanochemical synthesis of SrTiO3-xFx with high visible light photocatalytic activities for nitrogen monoxide destruction[J].Journal of Materials Chemistry,2003,13(9):2348-2352.
[21] 李崇裔,谢桂容,谈瑛,等.一步法快速合成Fe掺杂混晶TiO2及其增强太阳光催化活性研究[J].化工新型材料,2023,51(5):218-223.
[22] Diening A,Kück S.Spectroscopy and diode-pumped laser oscillation of Yb3+,Ho3+-doped yttrium scandium gallium garnet[J].Journal of Applied Physics,2000,87(9):4063-4068.
[23] Shang Q,Hui Y,Kong X,et al.Green and red up-conversion emissions of Er3+-Yb3+ Co-doped TiO2 nanocrystals prepared by sol-gel method[J].Journal of Luminescence,2008,128(7):1211-1216.
[24] Chen J,Chen L,Wang X,et al.Er single atoms decorated TiO2 and Er3+ ions modified TiO2 for photocatalytic oxidation of mixed VOCs[J].Applied Surface Science,2022,596:153655.
[25] 魏永春.Ag/TiO2纳米粒子的制备及其光催化降解苯酚的性能研究[J].功能材料,2021,52(3):3135-3139.
[26] 周冉冉,裴英琪,何小庆,等.掺Ag纳米TiO2光催化降解甲醛性能研究[J].广州化工,2018,46(16):73-75,91.
[27] Zielińska-Jurek A,Zaleska A.Ag/Pt-modified TiO2 nanoparticles for toluene photooxidation in the gas phase[J].Catalysis Today,2014,230:104-111.
[28] 周道坤.纳米MnO2/Mn3O4对TiO2相变控制及其光催化性能研究[D].武汉:武汉理工大学,2017.
[29] Miyoshi A,Kuwabara A,Maeda K.Effects of nitrogen/fluorine codoping on photocatalytic rutile TiO2 crystal studied by first-principles calculations[J].Inorganic Chemistry,2021,60(4):2381-2389.
[30] Elbanna O,Zhang P,Fujitsuka M,et al.Facile preparation of nitrogen and fluorine codoped TiO2 mesocrystal with visible light photocatalytic activity[J].Applied Catalysis B:Environmental,2016,192:80-87.
[31] Zhang X,Liu Q.Visible-light-induced degradation of formaldehyde over titania photocatalyst co-doped with nitrogen and nicke[J].Applied Surface Science,2008,254(15):4780-4785.
[32] 张义安.光催化剂负载酰肼基活性炭除甲醛纺织品制备[D].无锡:江南大学,2019.
[33] Kien K D T,Nhi N V U,Minh H N,et al.Optical properties of the Bi2O3-B2O3-ZnO glass system combined with TiO2 or Ag/TiO2[J].Journal of Ceramic Processing Research,2022,23(3):350-355.
基金资助
上海市自然科学基金项目面上项目(21ZR1426200);国家自然科学基金(51703123)
PDF
