同轴静电纺丝法制备ZnO/Ag2O纳米纤维材料及其光电催化性能研究

doi:10.7503/cjcu20190478

摘要/Abstract

摘要：

以醋酸锌和乙酰丙酮银为前驱体, 通过同轴静电纺丝和热处理过程在氟掺杂氧化锡(FTO)导电玻璃上制备了ZnO/Ag₂O同轴纳米纤维. 采用X射线衍射(XRD)、 X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉曼光谱和紫外-可见漫反射光谱(UV-Vis DRS)等手段对材料进行了表征. 以氙灯模拟可见光光源, 亚甲基蓝为目标降解物, 考察了所制备纳米纤维的光电催化活性. 结果表明, 同轴ZnO/Ag₂O纳米纤维具有壳核类似结构(ZnO为壳, Ag₂O为核), Ag₂O与ZnO形成的异质结和杂质能级降低了ZnO的带隙能, 提高了对可见光的利用率. 在可见光下, 与纯ZnO相比, ZnO/Ag₂O具有很强的光电催化能力, 并且Ag₂O的量对同轴纤维光电催化活性影响很大, 在同样光电催化条件下, ZnO/Ag₂O-7同轴纳米纤维的光电催化效果最好, 亚甲基蓝降解率达93%, 动力学常数最大为1.13×10 ^-2 min ^-1.

关键词: 异质结, 同轴纳米纤维, 光电催化活性

Abstract:

ZnO/Ag₂O/FTO coaxial nanofibers(FTO: Fluoride-doped tin oxide conductive glass) were prepared by sol-gel process, coaxial electrospinning and heat treatment using zinc acetate and silver acetylacetonate as precursors. The structure and surface morphology of the materials were characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), transmission electron microscopy(TEM), Raman spectroscopy, UV-Visible diffuse-reflective spectroscopy(UV-Vis DRS). At the same time, taking the Xenon lamp as the visible light source for simulation and methylene blue as the degradation target, the photoelectrocatalytic activity of the prepared nanofibers was investigated. The results show that the coaxial ZnO/Ag₂O nanofibers have a shell-like structure(ZnO shell, Ag₂O core). Ag₂O and ZnO form heterojunction and impurity levels, which not only reduces the band gap energy of ZnO, but also improves the utilization of visible light. Compared with pure ZnO, ZnO/Ag₂O has stronger photoelectrocatalytic ability under visible light, and the amount of Ag₂O has a great influence on the photoelectrocatalytic activity of coaxial fiber. Under the same photoelectric catalytic condition, ZnO/Ag₂O-7 displayed the highest photoelectric activity, showing a high degradation rate of 93%, and its maximum kinetic constant is 1.13×10 ^-2 min ^-1. It is attributed to the lowest recombination rate of photogenerated electron-hole pairs.

Key words: Heterojunction, Coaxial nanofibers, Photoelectrocatalytic activity

中图分类号:

O643

TrendMD:

韩志英,李佑稷,陈飞台,汤森培,王鹏. 同轴静电纺丝法制备ZnO/Ag₂O纳米纤维材料及其光电催化性能研究. 高等学校化学学报, 2020, 41(2): 308.

HAN Zhiying,LI Youji,CHEN Feitai,TANG Senpei,WANG Peng. Preparation of ZnO/Ag₂O Nanofibers by Coaxial Electrospinning and Study of Their Photocatalytic Properties ^†. Chem. J. Chinese Universities, 2020, 41(2): 308.

图/表 13

Fig.1 Schematic of the fabrication of coaxial fibers/FTO by electrospinning

Fig.2 Schematic illustration of photoelectrocatalytic degradation apparatus

Fig.3 TG-DTA curves of ZnO/Ag2O-7 precursor coaxial fibers

Fig.4 XRD patterns of ZnO(a), ZnO/Ag2O-3(b), ZnO/Ag2O-5(c), ZnO/Ag2O-7(d) and ZnO/Ag2O-11(e)

Fig.5 SEM images of ZnO(A, C) and ZnO/Ag2O-7(B, D) precursor fibers(A, B) and calcined fibers(C, D)

Fig.6 SEM image(A), O(B), Ag(C) and Zn(D) elemental mapping images of ZnO/Ag2O-7

Fig.7 TEM and HRTEM(inset) images of ZnO/Ag2O-7

Fig.8 Raman spectra of pure ZnO/Ag2O-7(a) and ZnO(b)

Fig.9 XPS spectra of ZnO and ZnO/Ag2O-7 (A) Survey; (B) Zn2p; (C) Ag3d; (D) O1s.

Fig.10 UV-Vis DRS spectra(A) and determination of the band gap energy(B) of ZnO, ZnO/Ag2O-3, ZnO/Ag2O-5, ZnO/Ag2O-7 and ZnO/Ag2O-11

Fig.11 PL spectra of ZnO, ZnO/Ag2O-3, ZnO/Ag2O-5, ZnO/Ag2O-7 and ZnO/Ag2O-11

Fig.12 UV-Vis absorption spectra of catalytic degradation of MB with ZnO/Ag2O-7 as catalyst(A) and photoelectrocatalysis kinetics of MB degradation under Visiblelight irradiation with ZnO, ZnO/Ag2O-3, ZnO/Ag2O-5, ZnO/Ag2O-7 or ZnO/Ag2O-11 as catalyst(B)

Fig.13 Schematic diagram for the potential photocatalytic mechanismof ZnO/Ag2O

参考文献 37

[1]	Jamal A. S., Tanujjal B., Michel C., Mohammed A A., Joydeep D., Chem. Eng. J., 2018,351, 56— 64 doi: 10.1016/j.cej.2018.06.071 URL
[2]	Yuan L., Chun H. L., Miao T., Rong W., Anthony G. F., Prog. Polym. Sci., 2018,77, 69— 94
[3]	Marjanovic M., Giannakis S., Grandjean D., de Alencastro L. F., Pulgarin C., Water. Res., 2018,140, 220— 231
[4]	Fujishima A., Honda K ., Nature, 1972,238(5358), 37— 38
[5]	Zhu Z., Cai H., Sun D. W., Trends Food Sci. Technol., 2018,75, 23— 355
[6]	Zhou C. Y., Lai C., Huang D. L., Zeng G. M., Zhang C., Cheng M., Hu L., Wan J., Xiong W. P., Wen M., Wen X. F., Qin L., Appl. Catal., B, 2018,220, 202— 210
[7]	Huang H. C.,Yang C. L., Wang, M. S., Ma X. G., Spectrochim. Acta, Part A, 2019,208, 65— 72 doi: 10.1016/j.saa.2018.09.048 URL
[8]	Xu F. Y., Zhang J. J., Zhu B. C., Yu J. G., Xu J. S., Appl. Catal., B, 2018,230, 194— 202
[9]	Gong Y. Y., Wu Y. J., Xu Y., Li L., Li C., Liu X. J., Niu L .Y., Chem. Eng. J., 2018,350, 257— 267
[10]	Akkari M., Aranda P., Belver C., Bedia J., Ben H. A. A., Ruiz-Hitzky E., Appl. Clay Sci., 2018,156, 104— 109 doi: 10.1016/j.clay.2018.01.021 URL
[11]	Nie N., He F., Zhang L. Y., Cheng B., Appl. Surf. Sci., 2018 , 457, 1096— 1102
[12]	Du P., Duan Y. Z., Shang X. L., New Chem. Mater., 2017, ( 4), 109— 112
	( 杜平, 段永正, 商希礼 . 化工新型材料, 2017, ( 4), 109— 112)
[13]	Pascariu P., Tudose I. V., Suchea M., Koudoumas E., Fifere N., Airinei A., Appl. Surf. Sci., 2018,448, 481— 488
[14]	Li R., Yu L. M., Yan X. F., Jiang T., Chem. J. Chinese Universities, 2017,38(2), 267— 274)
	( 李如, 于良民, 闫雪峰, 江涛 . 高等学校化学学报, 2017,38(2), 267— 274)
[15]	Chin B. O., Law Y. N., Abdul W. M., Renewable Sustainable Energy Rev., 2018,81, 536— 551 doi: 10.1016/j.rser.2017.08.020 URL
[16]	Li X. L., Huang L., Duan H. J., Zhang L., Zhang H. J., Chem. J. Chinese Universities, 2019,40(8), 1662— 1669
	( 李晓莉, 黄亮, 段红娟, 张力, 张海军 . 高等学校化学学报, 2019,40(8), 1662— 1669)
[17]	Khalid M. O., Nian N. M., Shirwan O. B., Aso Q. H., J. Photochem. Photobiol. A, 2018,364, 53— 58 doi: 10.1016/j.jphotochem.2018.05.041 URL
[18]	Pirhashemi M., Habibi-Yangjeh A., Mater. Chem. Phys., 2018,214, 107— 119 doi: 10.1016/j.matchemphys.2018.04.089 URL
[19]	Wang C., Fan H., Ren X., Fang J ., Applied Physics A, 2018,124(2), 99— 110 doi: 10.1007/s00339-017-1543-8 URL
[20]	Medina J. C., Portillo-Vélez N. S., Bizarro M., Hernández-Gordillo A., Rodil S. E., Dyes Pigm., 2018,153, 106— 116 doi: 10.1016/j.dyepig.2018.02.006 URL
[21]	Li Y., Wang Q., Wang H., Tian J., Cui H ., J. Colloid Interface Sci., 2019,537, 206— 214 doi: 10.1016/j.jcis.2018.11.013 URL
[22]	Liu B., Mu L., Han B., Zhang J., Shi H., Appl. Surf. Sci., 2017,396, 1596— 1603 doi: 10.1016/j.apsusc.2016.11.220 URL
[23]	Yang Z., Deng C., Ding Y., Luo H., Yin J., Jiang Y., Zhang P., Jiang Y ., J. Solid State Chem., 2018,268, 83— 93 doi: 10.1016/j.jssc.2018.07.031 URL
[24]	Yu H., Chen S., Quan X., Zhao H., Zhang Y., Appl. Cata. B, 2009,90(1/2), 242— 248 doi: 10.1016/j.apcatb.2009.03.010 URL
[25]	Zhang Y. Z., Wang X., Feng Y., Li J., Lim C. T., Ramakrishna S., Biomacromolecules, 2006,7(4), 1049— 1057 doi: 10.1021/bm050743i URL
[26]	Wu Y., He G., Wu X., Yuan Q., Gong X., Zhen D., Sun B., Int. J . Hydrogen Energy, 2019,44(14), 7494— 7504 doi: 10.1016/j.ijhydene.2019.01.281 URL
[27]	Xie R., Zhang L., Liu H., Xu H., Zhong Y., Sui X., Mao Z., Mater. Res.Bull., 2017,94, 7— 14
[28]	Song L., Jiang Q., Du P., Yang Y., Xiong J., Cui C ., J. Power Sources, 2014,261, 1— 6 doi: 10.1016/j.jpowsour.2014.03.030 URL
[29]	Wang H., Liang L., Cheng X., Luo Y., Sun S., Photochem. Photobiol., 2017,94, 17— 26 doi: 10.1111/php.2018.94.issue-1 URL
[30]	Abhijit K., Rohant D., Anna G., Tukaram S., Kalyanrao G ., J. Photochem. Photobiol. B, 2015,154, 24— 33 doi: 10.1016/j.jphotobiol.2015.11.007 URL
[31]	Anjum M., Oves M., Kumar R., Barakat M. A., Int. Biodeterior. Biodegrad., 2017,119, 66— 77 doi: 10.1016/j.ibiod.2016.10.018 URL
[32]	Rahman M. M., Khan S. B., Jamal A., Faisal M., Asiri A. M., Chem. Eng. J., 2012,192(2), 122— 128 doi: 10.1016/j.cej.2012.03.045 URL
[33]	Anjum M., Kumar R., Barakat M. A., J. Taiwan Inst. Chem. Eng., 2017,77, 227— 235 doi: 10.1016/j.jtice.2017.05.007 URL
[34]	Hadi S., Mohammad S ., J. Photochem. Photobiol. A, 2019,376, 279— 287 doi: 10.1016/j.jphotochem.2019.03.010 URL
[35]	Tauc J., Grigorovici R., Vancu A ., Phys. Status Solidi B, 1966,15, 627— 637 doi: 10.1002/(ISSN)1521-3951 URL
[36]	Cai A., Sun Y., Du L., Wang X ., J. Alloys Compd., 2015,644, 334— 340 doi: 10.1016/j.jallcom.2015.03.236 URL
[37]	Li F., Wang G. Y., Zhang Y., Li H. R., Chem. J. Chinese Universities, 2015,36(7), 1351— 1357
	( 李锋, 王桂燕, 张岩, 李洪仁 . 高等学校化学学报, 2015,36(7), 1351— 1357)

同轴静电纺丝法制备ZnO/Ag₂O纳米纤维材料及其光电催化性能研究

Preparation of ZnO/Ag₂O Nanofibers by Coaxial Electrospinning and Study of Their Photocatalytic Properties ^†

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