化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (9) : 94-98.

新材料与新技术

TiO₂分级结构/C₃N₄复合材料的制备及光催化性能研究

陈建军, 李永宇, 雷淑慧, 张晓霞, 刘杰, 邵俊芳

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Preparation and photocatalytic property of THS/C₃N₄ composite

Chen Jianjun, Li Yongyu, Lei Shuhui, Zhang Xiaoxia, Liu Jie, Shao Junfang

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Received
2019-01-23
Issue Date	Revised Date
2019-10-10	2019-01-23

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摘要

以玉米叶作为生物模板,通过一步浸渍结合煅烧工艺合成分级结构TiO₂,然后通过机械混合法制备出TiO₂分级结构/C₃N₄复合材料。采用X射线衍射仪、扫描电镜、透射电镜、紫外分光光度仪、N₂吸附和电化学等方法对其进行表征。结果表明:与分级结构TiO₂(THS)相比,复合材料不仅光吸收性能得到提高,而且光电流也有所增强。此外,对复合材料的可见光催化性能进行了测试,发现复合材料的催化性能明显优于分级结构TiO₂和单一的C₃N₄。其中,TiO₂与C₃N₄质量比0.3∶1时光催化活性最好。

Abstract

The TiO₂ with hierarchical structure (THS) was firstly synthesized by impregnation combined with calcination process by using Zea Mays Linn leaves as a template,then the THS/C₃N₄ composite was prepared by a simple mechanical mixing method.It was characterized by XRD,SEM,TEM,UV-Vis,N₂ adsorption and electrochemical methods.The results shown that compared with the THS,the composite not only had improved light absorption performance,but also enhanced photocurrent.In addition,the visible-light catalytic performance of the composite was tested.The results shown that the catalytic performance was significantly better than that of the THS and single C₃N₄.Among them,the photocatalytic activity was best when the ratio of THS to C₃N₄ was 0.3∶1.

关键词

C₃N₄ / 分级结构TiO₂ / 可见光 / 光催化 / 复合材料

Key words

C₃N₄ / hierarchical structure TiO₂ / visible-light / photocatalysis / composite material

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TiO₂分级结构/C₃N₄复合材料的制备及光催化性能研究[J]. 化工新型材料, 2019, 47(9): 94-98 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38.
[2] 高志慧,张秀芳,马春.C₃N₄-TiO₂复合光催化剂的制备及其太阳光催化性能[J].大连工业大学学报,2016,35(6):441-444.
[3] Xiang Q,Yu,J,Jaroniec M.Tunable photocatalyticselectivity of TiO₂ films consisted of flower-like microspheres with exposed {001} facets[J].Chemical Communications,2011,47(15):4532-4534.
[4] 杜利霞,吴志娇,吴谦,等.花状TiO₂分级结构的可控合成与其光催化性能[J].2013,34(4):808-814.
[5] Tian G,Chen J,Zhou W,et al.3D hierarchical flower-like TiO₂ nanostructure:morphology control and its photocatalytic property[J].CrystEngComm,2011,13(8):2994-3000.
[6] Bai H,Liu Z,Liu L,et al.Large-scale production of hierarchical TiO₂ nanorod spheres for photocatalytic elimination of contaminants and killing bacteria[J].European Journal of Chemistry,2013,19(9):3061-3070.
[7] 赵宇.分级纳米结构的形貌合成及性质研究[D].合肥:中国科学技术大学,2008.
[8] Zhou H,Fan T X,Zhang D,et al.Artificial inorganic leafs for efficient photochemical hydrogen production inspired by natural photosynthesis[J].Advanced Materials,2010,22(9):951-957.
[9] Li X,Fan T,Zhou H,et al.Enhanced light-harvesting and photocatalytic properties in morph-TiO₂ from green-leaf biotemplates[J].Advanced Functional Materials,2009,19(1):45-56.
[10] Wang Y,Xiong D,Zhang D,et al.Surface plasmon resonance of gold nanocrystals coupled with slow-photon-effect of biomorphic TiO₂ photonic crystals for enhanced photocatalysis under visible-ligh[J].Catalysis Today,2016,274(1):15-21.
[11] Zhou H,Fan T X,Zhang D,et al.Leaf-inspired hierarchical porous CdS/Au/N-TiO₂ heterostructures for visible light photocatalytic hydrogen evolution[J].Applied Catalysis B:Environmental,2014,147(4):221-228.
[12] Wang X,Maeda K,Thomas A.A metal-free poly-meric photocatalyst for hydrogen pro-duction from water tin-der visible light[J].Nature Materials,2009,8(1):76-80.
[13] 刘勇,寇璐垚,郑小刚.ZnFe₂O₄/g-C₃N₄对甲基橙的紫外光催化降解行为[J].化工新型材料,2018,46(7):202-204.
[14] Reli M,Huo P,Sihor M,et al.Novel TiO₂/C₃N₄ photocatalysts for photocatalytic reduction of CO₂ and for photocatalytic decomposition of N₂O[J].The Journal of Physical Chemistry A,2016,120(43):8564-8573.