Preparation  of mesoporous rGO/TiO2hollow blocks with wide spectral response and photocatalytic performance related with them

Abstract

Abstract: Mesoporous graphene oxide/TiO₂ hollow bulk materials were synthesized in-situ with Sol-Gel method, by taking tetrabutyl titanate (TBT) and graphene oxide(GO) as raw materials, yeast as cavity template agent and citric acid as hydrolysis inhibitor and mesoporous template agent, and then the reduced graphene oxide/TiO₂ (rGO/TiO₂) bulk materials were obtained by means of ultraviolet radiation reduction. The samples were analyzed by means of various characterization means such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) and photoluminescence (PL) and the effect of yeast addition on degradation of tetracycline hydrochloride with rGO/TiO₂ was studied. It was shown by experimental result that rGO/TiO₂ would be mesoporous bulk materials with specific surface area of 50.66 m²/g and mesopores size of 4.3 nm in majority. The addition of yeast could effectively inhibit the recombination of the photo-generated electron-hole pair of catalyst, broaden the spectral response range and improve the photocatalytic performance. When the mass fraction of yeast was 5%, the catalytic performance of rGO/TiO₂ would reach optimal level. Under visible light and ultraviolet light, the degradation rate of tetracycline hydrochloride would reach 84.97% and 96.96%, respectively.

Key words: reduced graphene oxide, titanium dioxide, yeast, hollow block, photocatalytic performance

CLC Number:

TB34

LI Cui-xia, SHI Xiao, SUN Hui-zhen, WANG Hui-kang, KANG Wei-chao. Preparation of mesoporous rGO/TiO₂hollow blocks with wide spectral response and photocatalytic performance related with them[J]. Journal of Lanzhou University of Technology, 2020, 46(1): 32-36.

References

[1] HAO R,XIAO X,ZUO X,et al.Efficient adsorption and visible-light photocatalytic degradation of tetracycline hydrochloride using mesoporous BiOI microspheres [J].Journal of Hazardous Materials,2012,209-210(1):137-145.
[2] HASHIMOTO K,IRIE H,FUJISHIMA A.TiO₂ photocatalysis: Ahistorical overview and future prospects [J].Japanese Journal of Applied Physics,2005,44(12):8269-8285.
[3] 李翠霞,杨轩,谭高玮,等.WO₃/TiO₂-rGO复合材料的制备及其光催化性能 [J].兰州理工大学学报,2017,43(3):25-29.
[4] WARKHADE S K,GAIKWAD G S,ZODAPE S P,et al.Low temperature synthesis of pure anatase carbon doped titanium dioxide:An efficient visible light active photocatalyst [J].Materials Science in Semiconductor Processing,2017,63:18-24.
[5] WANG J,ZHU W,ZHANG Yinqing,et al.An efficient two-step technique for nitrogen-doped titanium dioxide synthesizing:Visible-light-induced photodecomposition of methylene blue [J].Journal of Physical Chemistry C,2007,111(2):1010-1014.
[6] LIU Y.Hydrothermal synthesis of TiO₂-RGO composites and their improved photocatalytic activity in visible light [J].RSC Advances,2014,4(68):36040-36045.
[7] TANG C,LIU L,LI Y,et al.Aerosol spray assisted assembly of TiO₂ mesocrystals into hierarchical hollow microspheres with enhanced photocatalytic performance [J].Applied Catalysis B Environmental,2017,201:41-47.
[8] AN G,YANG C,JIN S,et al.Samenvatting hollow TiO₂:Sm³⁺ spheres with enhanced photoluminescence fabricated by a facile method using polystyrene as template [J].Journal of Materials Science,2013,48(16):5483-5488.
[9] CHEN J,WANG D,QI J,et al.Monodisperse hollow spheres with sandwich heterostructured shells as high-performance catalysts via an extended SiO₂ template method [J].Small,2015,11(4):420-425.
[10] SHEN W,ZHU Y,DONG X,et al.A new strategy to synthesize TiO₂-hollow spheres using carbon spheres as template [J].Cheminform,2005,34(6):840-841.
[11] MU G,WEI Q,HUANG Y.Facile fabrication of CeO₂ hollow microspheres with yeast as bio-templates [J].Journal of Rare Earths(JRE),2015,33(12):1329-1334.
[12] CHEN Y,WANG C,BAI B,et al.Fabrication of TiO₂ hollow spheres using yeast as bio-templates and their photocatalytic performance for the degradation of CBW wastewater [C]//International Conference on Bioinformatics & Biomedical Engineering.[s.n.]:IEEE,2010.
[13] BECERRIL H A,MAO J,LIU Z,et al.Evaluation of solution-processed reduced graphene oxide films as transparent conductors [J].Acs Nano,2008,2(3):463-470.
[14] DING Z,LU G Q,GREENFIELD P F.Role of the crystallite phase of TiO₂,in heterogeneous photocatalysis for phenol oxidation in water [J].Journal of Physical Chemistry B,2000,104(19):4815-4820.
[15] 张昔玉,葛圣松,邵谦,等.酵母菌模板法制备CeO₂空心微球及其光催化性能 [J].无机化学学报,2016,32(9):1535-1542.
[16] STORCK S,BRETINGER H,MAIER W F.Characterization of micro-and mesoporous solids by physisorption methods and pore-size analysis [J].Applied Catalysis A General,1998,174(1/2):137-146.
[17] HU Y,ZHANG J,MINAGAWA M,et al.The origin of the decline in the photocatalytic activity of TiO₂ in the decomposition of NO:TPD spectra of the adsorbed NO species [J].Research on Chemical Intermediates,2003,29(2):125-135.
[18] SHI Y,HU Y,ZHANG L,et al.Palygorskite supported BiVO₄ photocatalyst for tetracycline hydrochloride removal [J].Applied Clay Science,2017,137:249-258.

Preparation of mesoporous rGO/TiO₂hollow blocks with wide spectral response and photocatalytic performance related with them

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 9

Recommended Articles

Metrics

Comments

[1]	JIA Jian-gang, SU Cheng, XIA Ting-xi. Effect of PVA coating on the performance of electroless copper plating layer on the surface of Kevlar fiber [J]. Journal of Lanzhou University of Technology, 2022, 48(5): 8-14.
[2]	ZHAO Yu-kang, SU Jiang-sen, WU You-zhi, ZHANG Cai-rong. Study of optical and electrical properties of MoO₃doped organic semiconductor NPB [J]. Journal of Lanzhou University of Technology, 2022, 48(5): 30-34.
[3]	LÜ Kang-le, SONG Jun-mi. Preparation of nano-ZnO by gentle liquid phase method and its photocatalytic performance [J]. Journal of Lanzhou University of Technology, 2022, 48(4): 25-29.
[4]	LIU Wen-wu, LIU Yu-cheng, CUI Chong-yang, NIU Sheng-tao RAN Fen, QUE Yu-lun. Effect of CdBr₂ on defect state regulation and photoelectric properties of CsPbBr₃ perovskite grain boundary [J]. Journal of Lanzhou University of Technology, 2021, 47(5): 24-29.
[5]	LI Wei-xue, GAO Shan-shan, DAI Jian-feng, SUO Zhong-qiang, WANG Qing. First-principles calculation of optical properties of Cu/Al co-doped ZnO [J]. Journal of Lanzhou University of Technology, 2021, 47(4): 6-12.
[6]	YU Fu-cheng, NAN Dong-mei, WANG Bo-long, LI Yuan-meng, LIU Zheng-yan, HE Ling. The effect of Ag nanoparticles modification on photocatalytic properties of La-doped ZnO nanorods [J]. Journal of Lanzhou University of Technology, 2021, 47(1): 28-35.
[7]	CHEN Zhen-bin, ZHOU Yong-shan, ZHANG Xia-yun. Functionalization of Fe₃O₄ magnetic nanoparticles using RAFT reagent [J]. Journal of Lanzhou University of Technology, 2020, 46(5): 27-33.
[8]	HE Ling, QIN Xing-wen, FENG Yu-jie, PAN Li-li, SUN Wei-min, LI Wen-sheng. Preparation of YAG-ZrO₂ composite nanofibers by electrospinning [J]. Journal of Lanzhou University of Technology, 2020, 46(3): 28-33.
[9]	LIANG Ze-fen, MA Sheng-ling, XUE Hong-tao, TANG Fu-ling WANG Lan-xi, FAN Ding. Effects of degree of fluorination and uniaxial stress on structural stability and energy band of fluorinated graphene [J]. Journal of Lanzhou University of Technology, 2020, 46(2): 29-34.