形貌调控及掺杂改性对TiO2催化剂光催化性能的影响

摘要/Abstract

摘要： 为了改善TiO₂光催化活性,通过溶胶-凝胶法制备了介孔TiO₂、C/TiO₂、Nd/TiO₂和C/Nd/TiO₂,并以聚苯乙烯(PS)胶晶为模板剂制备了多级有序C/Nd/TiO₂催化剂。利用SEM、XRD、XPS、UV-Vis DRS和N₂吸附-脱附等表征手段对所制备的催化剂性能进行分析。在模拟可见光条件下研究了所制备催化剂材料对甲基橙溶液的光催化性能。结果表明,锐钛矿型多级有序C/Nd/TiO₂催化剂表面形貌排列整齐,内部具有交联的孔道结构,大孔形状表现出六边形结构,产生良好的开放性,较大的比表面积和孔容积为传质提供了较大的空间。非金属C和稀土金属Nd通过相互协同作用,使多级有序C/Nd/TiO₂的禁带宽度变窄,从而表现出良好的光催化活性,在光照210 min时,其光催化脱色率可达81.15%。

关键词: 溶胶-凝胶, 聚苯乙烯, 可见光, 协同作用, 禁带宽度

Abstract: In order to improve the photocatalytic activity of TiO₂, mesoporous TiO₂, C/TiO₂, Nd/TiO₂ and C/Nd/TiO₂ were prepared by sol-gel method, and multistage ordered C/Nd/TiO₂ catalyst was prepared using polystyrene (PS) colloidal crystals as template. The properties of the prepared catalysts were analyzed by SEM, XRD, XPS, UV-Vis DRS and N₂ adsorption-desorption. The photocatalytic properties of the prepared catalyst materials for methyl orange solution were investigated under simulated visible light conditions. The results show that the surface morphology of the anatase type of multistage orderly C/Nd/TiO₂ catalyst is arranged in order, and internal is the cross linking pore structure. Macroporous structure shows the hexagonal structure to produce good openness. Larger specific surface area and pore volume provide a larger space for mass transfer. Through the synergistic effect of non-metal C and rare earth metal Nd, the band gap of multistage orderly C/Nd/TiO₂ is narrowed, which reveals good catalytic activity. As a result, the photocatalytic decolorization rate of multistage ordered C/Nd/TiO₂ catalyst is up to 81.15% at illumination 210 min.

Key words: sol-gel, polystyrene, visible light, synergistic effect, band gap

中图分类号:

O611
O643.36

王丹丹, 刘文强, 赵林, 李超, 李世杰. 形貌调控及掺杂改性对TiO₂催化剂光催化性能的影响[J]. 人工晶体学报, 2024, 53(5): 824-832.

WANG Dandan, LIU Wenqiang, ZHAO Lin, LI Chao, LI Shijie. Morphology Regulation and Doping Modification on the Photocatalytic Properties of TiO₂ Catalyst[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(5): 824-832.

参考文献

[1] FUJISHIMA A, HONDA K. Electrochemical photolysis of water at a semiconductor electrode[J]. Nature, 1972, 238: 37-38.
[2] YANG Y C, WEN J W, WEI J H, et al. Polypyrrole-decorated Ag-TiO₂ nanofibers exhibiting enhanced photocatalytic activity under visible-light illumination[J]. ACS Applied Materials & Interfaces, 2013, 5(13): 6201-6207.
[3] SHEN Y, LIU S S, LU L, et al. Photocatalytic degradation of toluene by a TiO₂ p-n homojunction nanostructure[J]. ACS Applied Nano Materials, 2022, 5(12): 18612-18621.
[4] 孟汝浩, 班新星, 左宏森, 等. TiO₂/g-C₃N₄复合粉体的制备及其在紫外/芬顿反应中光催化性能[J]. 人工晶体学报, 2022, 51(8): 1466-1472.
MENG R H, BAN X X, ZUO H S, et al. Preparation of TiO₂/g-C₃N₄ composite powder and its photocatalytic performance in UV/fenton reaction[J]. Journal of Synthetic Crystals, 2022, 51(8): 1466-1472 (in Chinese).
[5] KUERBANJIANG B, WIEDWALD U, HAERING F, et al. Exchange bias of Ni nanoparticles embedded in an antiferromagnetic IrMn matrix[J]. Nanotechnology, 2013, 24(45): 455702.
[6] WANG X C, WU P X, WANG Z Q, et al. Chlorine-modified Ru/TiO₂ catalyst for selective guaiacol hydrodeoxygenation[J]. ACS Sustainable Chemistry & Engineering, 2021, 9(8): 3083-3094.
[7] ZHOU Y, OUYANG W L, WANG Y J, et al. Core-shell structured NH₂-UiO-66@TiO₂ photocatalyst for the degradation of toluene under visible light irradiation[J]. Acta Physico Chimica Sinica, 2021, 37(8): 2009045.
[8] 郑思源, 王雅文, 樊彩梅. 三维有序大孔TiO₂/CeO₂光催化剂的制备及性能研究[J]. 人工晶体学报, 2018, 47(7): 1324-1329.
ZHENG S Y, WANG Y W, FAN C M. Synthesis and photocatalytic performance of three dimension ordered macroporous TiO₂/CeO₂ composite photoctatalyst[J]. Journal of Synthetic Crystals, 2018, 47(7): 1324-1329 (in Chinese).
[9] ASAHI R, MORIKAWA T, OHWAKI T, et al. Visible-light photocatalysis in nitrogen-doped titanium oxides[J]. Science, 2001, 293(5528): 269-271.
[10] GAO H, ZHOU J, DAI D, et al. Photocatalytic activity and electronic structure analysis of N-doped anatase TiO₂: a combined experimental and theoretical study[J]. Chemical Engineering & Technology, 2009, 32(6): 867-872.
[11] BANERJEE S, ZANGIABADI A, MAHDAVI-SHAKIB A, et al. Quantitative structural characterization of catalytically active TiO₂ nanoparticles[J]. ACS Applied Nano Materials, 2019, 2(10): 6268-6276.
[12] 左玉香. 氮掺杂二氧化钛光催化降解甲基橙的研究[J]. 化学工程师, 2011, 25(11): 38-39.
ZUO Y X. Research on photocatalysis degradation of N-doped TiO₂ to methyl orange[J]. Chemical Engineer, 2011, 25(11): 38-39 (in Chinese).
[13] NING J F, ZHAO G P. A fractal study of sound propagation characteristics in roughened porous materials[J]. Wave Motion, 2017, 68: 190-201.
[14] REZA K M, KURNY A, GULSHAN F. Parameters affecting the photocatalytic degradation of dyes using TiO₂: a review[J]. Applied Water Science, 2017, 7(4): 1569-1578.
[15] 徐世华, 沈风雷. La掺杂对TiO₂光催化剂的影响[J]. 稀土, 2010, 31(6): 89-92.
XU S H, SHEN F L. Effects of lanthanum on structure and photo absorption performance of TiO₂ photocatalyst[J]. Chinese Rare Earths, 2010, 31(6): 89-92 (in Chinese).
[16] GOVINDHAN P, PRAGATHISWARAN C. Synthesis and characterization of TiO₂@SiO₂-Ag nanocomposites towards photocatalytic degradation of rhodamine B and methylene blue[J]. Journal of Materials Science: Materials in Electronics, 2016, 27(8): 8778-8785.
[17] 王鑫伟, 车致远, 张兴, 等. 不同形貌TiO₂薄膜的可控制备及其光电化学性能研究[J]. 人工晶体学报, 2021, 50(3): 516-522.
WANG X W, CHE Z Y, ZHANG X, et al. Controllable preparation and photoelectrochemical properties of TiO₂ films with different morphologies[J]. Journal of Intraocular Lenses, 2021, 50(3): 516-522 (in Chinese).
[18] NKAMBULE T I, KUVAREGA A T, KRAUSE R W M, et al. Synthesis and characterisation of Pd-modified N-doped TiO₂ for photocatalytic degradation of natural organic matter (NOM) fractions[J]. Environmental Science and Pollution Research, 2012, 19(9): 4120-4132.
[19] AKPAN U G, HAMEED B H. The advancements in sol-gel method of doped-TiO₂ photocatalysts[J]. Applied Catalysis A: General, 2010, 375(1): 1-11.
[20] ALBAIDANI K, TIMOUMI A, BELHADJ W, et al. Structural, electronic and optical characteristics of TiO₂ and Cu-TiO₂ thin films produced by sol-gel spin coating[J]. Ceramics International, 2023, 49(22): 36265-36275.
[21] SHANG S Q, JIAO X L, CHEN D R. Template-free fabrication of TiO₂ hollow spheres and their photocatalytic properties[J]. ACS Applied Materials & Interfaces, 2012, 4(2): 860-865.
[22] XU Y, WU Y J, HYUN HUR S, et al. Photocatalytic degradation of bisphenol A by TiO₂ mineralized using a polystyrene-peptide template[J]. ChemistrySelect, 2022, 7(46): e202204102.
[23] 杜晶晶, 赵军伟, 施飞, 等. 核壳结构TiO₂微球的制备及其光催化性能[J]. 人工晶体学报, 2023, 52(10): 1880-1886.
DU J J, ZHAO J W, SHI F, et al. Preparation of core-shell TiO₂ microspheres and their photocatalytic properties[J]. Journal of Intraocular Lenses, 2023, 52(10): 1880-1886 (in Chinese).
[24] LANGFORD J I, WILSON A J C. Scherrer after sixty years: a survey and some new results in the determination of crystallite size[J]. Journal of Applied Crystallography, 1978, 11(2): 102-113.
[25] CHOJNOWSKI G, PRZENIOSŁO R, SOSNOWSKA I, et al. Microstructure evolution and grain growth kinetics in annealed nanocrystalline chromium[J]. The Journal of Physical Chemistry C, 2007, 111(15): 5599-5604.
[26] ERDEM B, HUNSICKER R A, SIMMONS G W, et al. XPS and FTIR surface characterization of TiO₂ particles used in polymer encapsulation[J]. Langmuir, 2001, 17(9): 2664-2669.
[27] ZHENG H J, NIU P, ZHAO Z F. Carbon quantum dot sensitized Pt@Bi₂WO₆/FTO electrodes for enhanced photoelectro-catalytic activity of methanol oxidation[J]. RSC Advances, 2017, 7(43): 26943-26951.
[28] OU H H, LO S L, LIAO C H. N-doped TiO₂ prepared from microwave-assisted titanate nanotubes (Na_xH_2-xTi₃O₇): the effect of microwave irradiation during TNT synthesis on the visible light photoactivity of N-doped TiO₂[J]. The Journal of Physical Chemistry C, 2011, 115(10): 4000-4007.
[29] TOLIŃSKI T, KOWALCZYK A, CHEŁKOWSKA G. XPS studies of the hybridization effects in RNi₄B (R=Ce, Pr, Nd) compounds[J]. Physics Letters A, 2003, 308(1): 75-79.
[30] ZHOU H, LI X F, FAN T X, et al. Artificial inorganic leafs for efficient photochemical hydrogen production inspired by natural photosynthesis[J]. Advanced Materials, 2010, 22(9): 951-956.
[31] LI X F, FAN T X, ZHANG D, et al. Assembly of metallic nanoparticles with controllable size in nanopores of biomorphic oxide fibers templated by cotton tissue[J]. Journal of Materials Research, 2007, 22(3): 755-762.

形貌调控及掺杂改性对TiO₂催化剂光催化性能的影响

Morphology Regulation and Doping Modification on the Photocatalytic Properties of TiO₂ Catalyst

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	刘辉, 闫共芹, 蓝春波, 张子杨. Cu掺杂P2型Na_0.67Ni_0.33Mn_0.67O₂钠离子电池正极材料的制备与性能[J]. 人工晶体学报, 2024, 53(1): 145-153.
[2]	陈伟杰, 花开慧, 雷鸣, 王望龙. 多孔陶瓷负载Ce-TiO₂光催化降解印染废水研究[J]. 人工晶体学报, 2024, 53(1): 170-180.
[3]	杨松, 何颖子, 王建卫, 张敏, 王旭. 锌掺杂对铁酸铋薄膜结构及多铁性能的影响[J]. 人工晶体学报, 2023, 52(4): 621-628.
[4]	赵炎, 蒋小康, 高峰, 尹红梅, 周恒为. Dy³⁺掺杂Gd₂MgTiO₆白色荧光粉的制备及发光性能研究[J]. 人工晶体学报, 2023, 52(11): 2050-2056.
[5]	蒋小康, 张王曦月, 高峰, 周恒为. Dy³⁺掺杂Y₂MgTiO₆荧光粉的制备及发光性质研究[J]. 人工晶体学报, 2023, 52(10): 1809-1815.
[6]	田野, 闫哲, 刘建新, 樊彩梅. RuO₂/BiOCl复合光催化剂的制备及其固氮性能研究[J]. 人工晶体学报, 2023, 52(10): 1872-1879.
[7]	刘权, 展红全, 袁梦磊, 李芾, 谢志鹏, 汪长安. 自掺杂SnO₂微球的水热合成及其可见光催化性能[J]. 人工晶体学报, 2022, 51(1): 139-147.
[8]	何东, 徐文博, 胡文鹏, 程大伟, 童靓. 水基溶胶-凝胶沉积法制备YBCO薄膜[J]. 人工晶体学报, 2021, 50(9): 1688-1693.
[9]	刘振华, 樊龙, 符亚军, 王进, 曹林洪, 吴卫东. 同质外延生长ZnO单晶结构及光电性能的研究[J]. 人工晶体学报, 2021, 50(4): 768-775.
[10]	张王曦月, 周琦, 周恒为, 蒋小康. 近紫外激发Gd₂ZnTiO₆∶Eu³⁺,Li⁺红色荧光粉的制备及荧光性能[J]. 人工晶体学报, 2021, 50(12): 2269-2275.
[11]	孙建科, 陈进, 赵坤, 刘璐, 刘莹莹, 易大伟. 溶胶-凝胶软模板法合成锂钛离子筛[J]. 人工晶体学报, 2021, 50(11): 2144-2149.
[12]	李悦, 王博, 朱晓丽, 刘昆. g-C₃N₄催化石墨化碳质材料的制备及光催化性能研究[J]. 人工晶体学报, 2021, 50(11): 2156-2163.
[13]	林莹;刘梦丽;庄乃锋. 绿色荧光粉CaMoO4:Ho3+结构精修及光谱性质的研究[J]. 人工晶体学报, 2020, 49(9): 1614-1619.
[14]	牛宇彤;郭贵宝. 炭吸附共沉淀钒酸铋纳米粉体的制备及其光催化性能研究[J]. 人工晶体学报, 2020, 49(4): 689-693.
[15]	曹建文;田晓霞;蒙澳;赵芸彤;孔志远;张家瑞;马丽斯. 铁酸镁/氧化锌纳米磁性复合材料的光催化性能[J]. 人工晶体学报, 2020, 49(3): 462-467.