化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (9) : 137-140. DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.029

新材料与新技术

TiO₂核壳微球对甲醛气体的光电气敏性能研究

⁴

作者信息 +

Photoelectric sensing property of TiO₂ core-shell microsphere for formaldehyde

Zhang Hongguang¹, Wang Guowei², Wang Meng³, Wang Yu⁴, Xia Chunhui¹, Fu Shuang¹

Author information +

文章历史 +

Received		Published
2019-05-24		2020-09-20
Issue Date	Revised Date
2020-10-20	2019-05-24

PDF

摘要

通过简单的一步水热法制备了TiO₂核壳微球。所得TiO₂为锐钛矿晶相,具有不规则的核壳结构,微球表面由规则的八面体粒子组成。气敏性能测试结果显示,样品对甲醛气体具有优良的响应,对10×10^-6的甲醛气体具有明显的光电流响应,对30×10^-6的甲醛气体响应值最大。样品的电荷微观动力学特性显示,其具有优良的光生电荷载流子分离和传输效率。良好的气敏性能可能与其粗糙的表面及大的比表面积有关,特殊形貌促进了其对气体的吸附,且提供了大量的表面活性位点与甲醛发生催化反应。

Abstract

TiO₂ core-shell microspheres were prepared by a simple one-step hydrothermal method.The obtained TiO₂ was an anatase crystal phase and had an irregular core-shell structure,and the surface of the microspheres was composed of regular octahedral particles.The gas sensitivity test results shown that the sample had an excellent response to formaldehyde gas,and a significant photocurrent response to 10 ppm of formaldehyde gas,and has the largest response to 30 ppm of formaldehyde gas.The charge microscopic kinetics of the sample shown excellent photogenerated charge carrier separation and transmission efficiency.Good gas sensitivity may be related to its rough surface and large specific surface area.The special morphology promoted the adsorption of gas and provided numerous surface-active sites to catalyze the reaction with formaldehyde.

关键词

二氧化钛 / 气敏性能 / 甲醛 / 光电性质

Key words

TiO₂ / sensing property / formaldehyde / photoelectric property

引用本文

引用格式 ▾

TiO₂核壳微球对甲醛气体的光电气敏性能研究[J]. 化工新型材料, 2020, 48(9): 137-140 DOI:10.19817/j.cnki.issn 1006-3536.2020.09.029

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] 朱珠,黄婷婷,杨德虎.浅谈室内装修造成的污染及防治措施[J].江西建材,2019,4:188-190.
[2] Chiang C M,Huang K C,Lee C C,et al.Establish sorptive test system and validation of the reduction indoor HCHO concentrations by building material in Taiwan[J].Adv Mater Res-Switz,2011,314:1435-1440.
[3] 吴洁,芮广虎,宋人杰,等.AHMT法测定制药设备表面甲醛残留[J].中国药师,2014,17(2):330-332.
[4] Fox J M,Shuttleworth G,Martin F.Methodology to reduce formaldehyde exposure during laboratory fumigation[J].Int J Environ Heal R,2013,23(5):400-406.
[5] 曾志强,周牧野,李容,等.碘氧化铋硅藻泥净化室内空气甲醛性能研究[J].广州化工,2019,47(8):55-57.
[6] Zyrichidou I,Balis D,Koukouli M E,et al.Adverse results of the economic crisis:a study on the emergence of enhanced formaldehyde (HCHO) levels seen from satellites over Greek urban sites[J].Atmos Res,2019,224:42-51.
[7] Zhu K M,Ma S Y.Preparations of Bi-doped SnO₂ hierarchical flower-shaped nanostructures with highly sensitive HCHO sensing properties[J].Mater Lett,2019,236:491-494.
[8] Li H,Chu S S,Ma Q,et al.Hierarchical WO₃/ZnWO₄ 1D fibrous heterostructures with tunable in-situ growth of WO₃ nanoparticles on surface for efficient low concentration HCHO detection[J].Sensor Actuat B-Chem,2019,286:564-574.
[9] Liu D,Shi P,Ren W,et al.Fabrication and characterization of La_0.8Sr_0.2CrO₃/In₂O₃ thin film thermocouple for high temperature sensing[J].Sensor Actuat a-Phys,2018,280:459-465.
[10] Alchaar R,Makhlouf H,Abboud N,et al.Enhanced UV photosensing properties of ZnO nanowires prepared by electrodeposition and atomic layer deposition[J].J Solid State Electr,2017,21(10):2877-2886.
[11] Kathalingam A,Kim H S.Fabrication of two-terminal devices using solution-synthesized Cu-doped ZnO nanorods and their photosensing properties[J].Opt Mater Express,2018,8(9):2832-2842.
[12] Ramos R A,Boratto M H,Scalvil V A.On the photo-induced electrical conduction related to gas sensing of the Sb∶SnO₂/TiO₂ heterostructure[J].Sensor Actuat a-Phys,2018,281:250-257.
[13] Zhang X J,Deng N,Chen X J,et al.Metal-Doped In₂O₃ nanosphere arrays with enhanced gas-sensing property[J].Nano,2019,14(3):195-201.
[14] Jiang X D,Xu W C,Yu L.Photocatalytic decomposition of gaseous HCHO over Ag modified TiO₂ nanosheets at ambient temperature[J].Nanomaterials-Basel,2019,9(3):365-369.
[15] Wu G F,Zhao C H,Zhou X,et al.The interaction between HCHO and TiO₂ (101) surface without and with water and oxygen molecules[J].Appl Surf Sci,2018,455:410-417.