科学研究

改性碳化钛阴极的光催化系统还原CO2研究

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  • 郑州轻工业大学能源与动力工程学院,郑州450002
张军(1987-),男,博士,讲师,主要研究方向为燃料电池与传输现象和废弃资源(废水和废气)的能源转化与综合利用,E-mail:zhangjun@zzuli.edu.cn。

收稿日期: 2020-06-21

  修回日期: 2021-08-08

  网络出版日期: 2021-11-02

基金资助

郑州轻工业学院博士启动基金(2015BSJJ001);低品位能源利用技术与系统重点实验室建设项目(LLEUTS-202015)

CO2 reduction in photocatalytic system with modified Ti3C2 cathode

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  • School of Energy and Power Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002

Received date: 2020-06-21

  Revised date: 2021-08-08

  Online published: 2021-11-02

摘要

采用氢氟酸(HF)侵蚀钛碳化铝(Ti3AlC2)的方法制备了碳化钛(Ti3C2)催化剂,对其进行表面基团碱化后,作为光催化还原二氧化碳(CO2)的阴极催化剂。采用X射线衍射(XRD)和扫描电子显微镜(SEM)对其表面进行表征。在以二氧化钛纳米管(TiO2-NTs)为光阳极的光催化燃料电池中进行CO2还原性测试。测试发现,经表面碱化的Ti3C2催化剂的CO2还原性能明显提高,但由于大量H+的存在导致循环稳定性较差。通过引入氟基疏水层来增强操作稳定性,该疏水层使得催化剂与水溶液的接触减少,抑制H+对表面碱性基团的破坏,使系统能够高效稳定运行。

本文引用格式

张军, 宋亚文, 吕帅, 郑季历, 杨朋林 . 改性碳化钛阴极的光催化系统还原CO2研究[J]. 化工新型材料, 2021 , 49(10) : 150 -153 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.10.032

Abstract

Titanium carbide (Ti3C2) catalyst was prepared by hydrofluoric acid (HF) etching titanium aluminum carbide (Ti3AlC2),which was used as cathode catalyst for photocatalytic reduction of carbon dioxide (CO2) after alkalization of surface groups.The surface properties of cathode catalyst were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM).CO2 reducibility was tested in photocatalytic fuel cells with titanium dioxide nanotubes (TiO2-NTs) as photoanode.It was found that the reduction performance of Ti3C2 catalyst after surface alkalization was significantly improved,but the cycle stability was poor due to the presence of a large amount of hydrogen ions (H+).Operational stability was enhanced via the introduction of a fluorine-based hydrophobic layer,which reduced the contact between the catalyst and the aqueous solution,and inhibited the damage of H+ to the surface alkaline groups,and enabled the system to run smoothly.

参考文献

[1] Adekoya D,Tahir M,Amin N A S.Recent trends in photocatalytic materials for reduction of carbon dioxide to methanol[J].Renewable and Sustainable Energy Reviews,2019,116:109389.
[2] 郝瑞鹏,杨朋举,王志坚,等.贵金属负载TiO2对光催化还原CO2选择性的影响[J].燃料化学学报,2015,43(1):94-99.
[3] Rochelle G T.Amine scrubbing for CO2 capture[J].Science,2009,325:1652-1654.
[4] Halmann M.Photoelectrochemical reduction of aqueous carbon-dioxide on p-type gallium phosphide in liquid junction solar cells[J].Nature,1978,275:115-116.
[5] Inoue T,Fujishima A,Konishi S,et al.Photoelectrocatalytic reduction of carbon dioxide in aqueous suspensions of semiconductor powders[J].Nature,1979,277:237-238.
[6] 汤惠睫,曜谭,许凌亮,等.二氧化碳光催化还原材料的研究进展[J].轻工科技,2019,35(12):29-31.
[7] Billo T,Shown I,Anbalagan A K,et al.A mechanistic study of molecular CO2 interaction and adsorption on carbon implanted SnS2 thin film for photocatalytic CO2 reduction activity[J].Nano Energy,2020,72:104717.
[8] Abdullah H,Khan M M R,Ong H R,et al.Modified TiO2 photocatalyst for CO2 photocatalytic reduction:an overview[J].Journal of CO2 Utilization,2017,22:15-32.
[9] Kim J,Kwon E E.Photoconversion of carbon dioxide into fuels using semiconductors[J].Journal of CO2 Utilization,2019,33:72-82.
[10] Naguib M,Kurtoglu M,Presser V,et al.Two-dimensional nanocrystals produced by exfoliation of Ti3AlC2[J].Advanced Materials,2011,23(37):4248-4253.
[11] Yang C,Tan Q,Li Q,et al.2D/2D Ti3C2 Mxene/g-C3N4 nanosheets heterojunction for high efficient CO2 reduction photocatalyst:dual effects of urea[J].Applied Catalysis B:Environmental,2020,268:118738.
[12] Nguyen T P,Nguyen D M T,Tran D L,et al.Mxenes:applications in electrocatalytic,photocatalytic hydrogen evolution reaction and CO2 reduction[J].Molecular Catalysis,2020,486:110850.
[13] He F,Zhu B,Cheng B,et al.2D/2D/0D TiO2/C3N4/Ti3C2 Mxene composite S-scheme photocatalyst with enhanced CO2 reduction activity[J].Applied Catalysis B:Environmental,2020,272:119006.
[14] Khan A A,Tahir M.Recent advancements in engineering approach towards design of photoreactors for selective photocatalytic CO2 reduction to renewable fuels[J].Journal of CO2 Utilization,2019,29:205-239.
[15] He Y,Yuan R,Leung M K H.Highly efficient AgBr/BiVO4 photoanode for photocatalytic fuel cell[J].Materials Letters,2019,236:394-397.
[16] Fresno F,Villar-García I J,Collado L,et al.Mechanistic view of the main current issues in photocatalytic CO2 reduction[J].Journal of Physical Chemistry Letters,2018,9,7192-7204.
[17] Zhang J,Yang P,Zheng J,et al.Enhanced carbon dioxide reduction in a thin-film rotating disk photocatalytic fuel cell reactor[J].Journal of CO2 Utilization,2020,37:328-334.
[18] Ye M,Wang X,Liu E,et al.Boosting the photocatalytic activity of P25 for carbon dioxide reduction by using a surface-alkalinized titanium carbide Mxene as cocatalyst[J].Chemsuschem,2018,11(10):1606-1611.
[19] Tang Y,Zhu J,Yang C,et al.Enhanced capacitive performance based on diverse layered structure of two-dimensional Ti3C2 Mxene with long etching time[J].Journal of The Electrochemical Society,2016,163(9):A1975-A1982.
[20] Naguib M,Mochalin V N,Barsoum M W,et al.25th anniversary article:Mxenes:a new family of two-dimensional materials[J].Advanced Materials,2014,26(7):992-1005.
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