化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (10) : 167-170.

科学研究

六方棱柱状Ag/g-C₃N₄光催化剂的制备及光催化活性研究

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Preparation and photocatalytic activity of hexagonal prismatic Ag/g-C₃N₄ photocatalyst

Zong Peixiao, Liu Shanshan, Li Bingdong, Meng Xianguang, Shen Yi, Zuo Guifu

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Received		Published
2018-04-26		2019-10-20
Issue Date	Revised Date
2019-11-09	2018-04-26

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摘要

通过水热还原法制备了银负载的石墨碳氮化物(Ag/g-C₃N₄)光催化剂。采用X射线衍射仪、傅里叶变换红外光谱仪、扫描电子显微镜和能量色散光谱仪对催化剂样品进行表征。结果表明,制备的Ag/g-C₃N₄光催化剂呈六方棱柱状,且单分散的Ag纳米粒子沉积在g-C₃N₄表面。光催化降解罗丹明B实验表明,AgNO₃与g-C₃N₄质量比为0.15∶1时,Ag/g-C₃N₄光催化剂表现出最佳的降解性能,降解常数约为纯g-C₃N₄降解常数的6倍。

Abstract

A hexagonal prismatic Ag/g-C₃N₄ photocatalyst was fabricated by hydrothermal-reduction method.X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FT-IR),scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) were employed for investigation of the prepared samples.It was concluded that the prepared g-C₃N₄ exhibited a hexagonal prismatic morphology.Mono-dispersed Ag nano-particles were deposited on the surface of g-C₃N₄.The photocatalytic performance was evaluated by degradation of Rhodamine B (RhB).It was found that Ag/g-C₃N₄ exhibited the best degradation performance when the mass ratio of AgNO₃ to g-C₃N₄ was 0.15∶1,which was 6 times higher than that of pure g-C₃N₄.

关键词

六方棱柱 / Ag/g-C₃N₄ / 水热还原 / 光催化剂

Key words

hexagonal prismatic type / Ag/g-C₃N₄ / hydrothermal-reduction / photocatalyst

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六方棱柱状Ag/g-C₃N₄光催化剂的制备及光催化活性研究[J]. 化工新型材料, 2019, 47(10): 167-170 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 smiconductor electrode[J].Nature,1972,238(5358):37-38.
[2] Nakamura R,Imanishi A,Murakoshi K,et al.In situ FT-IR studies of primary intermediates of photocatalytic reactions on nanocrystalline TiO₂ films in contact with aqueous solutions[J].J Am Chem Soc,2003,125(24):7443-7450.
[3] Cui Y J,Zhang J S,Zhang G G,et al.Synthesis of bulk and nanoporous carbon nitride polymers from ammonium thiocyanate for photocatalytic hydrogen evolution[J].Mater Chem,2011,21(34):13032-13039.
[4] Dong F,Wu L W,Sun Y J,et al.Efficient synthesis of polymeric g-C₃N₄ layered materials as novel efficient visible light driven photocatalysts[J].Mater Chem,2011,21(39):15171-15174.
[5] Dong F,Ou M Y,Jiang Y K,et al.Efficient and durable visible light photocatalytic performance of porous carbon nitride nanosheets for air purification[J].Ind Eng Chem Res,2014,53(6):2318-2330.
[6] Yuan Y P,Yin L S,Cao S W,et al.Microwave-assisted heating synthesis:a general and rapid strategy for large-scale production of highly crystalline g-C₃N₄ with enhanced photocatalytic H₂ production[J].Green Chem,2014,16(11):4663-4668.
[7] Zhu B,Xia P,Ho W,et al.Isoelectric point and adsorption activity of porous g-C₃N₄[J].Appl Surf Sci,2015,344:188-195.
[8] Ge L,Han C,Liu J,et al.Enhanced visible light photocatalytic activity of novel polymeric g-C₃N₄ loaded with Ag nanoparticles[J].Appl Catal A,2011,409(23):215-222.
[9] Singh J A,Overbury S H,Dudney N J,et al.Nanoparticles supported on carbon nitride:influence of surface hydroxyls on low temperature carbon monoxide oxidation[J].ACS Catal,2012,2(6):1138-1146.
[10] 刘宗梅,赵朝成,王帅军,等.钾离子掺杂g-C₃N₄催化剂的制备及其性能研究[J].现代化工,2017,37(7):96-99;101.
[11] Liu G,Niu P,Sun C H,et al.Unique electronic structure induced high photoreactivity of sulfur-doped graphitic C₃N₄[J].J Am Chem Soc,2010,132(33):11642-11648.
[12] Wang Y,Zhang J S,Wang X C,et al.Boron- and fluorine-containing mesoporous carbon nitride polymers:metal-free catalysts for cyclohexane oxidation[J].Angew Chem Int Ed,2010,49(19):3356-3359.
[13] Khan A,Alam U,Raza W,et al.One-pot,self-assembled hydrothermal synthesis of 3D flower-like CuS/g-C₃N₄ composite with enhanced photocatalytic activity under visible-light irradiation[J].Journal of Physics & Chemistry of Solids,2018,115:59-68.
[14] 李荣荣,王锐,宫红,等.高比表面积g-C₃N₄的制备及其改性研究进展[J].化工新型材料,2017,45(1):35-37.
[15] 郑猛猛,白照杲,胡芸,等.以不同前驱物制备的g-C₃N₄与BiVO₄的复合光催化剂及其增强的可见光催化性能[J].化工新型材料,2016,44(11):153-155;162.
[16] Zhou L,Wang L,Lei J,et al.Fabrication of TiO₂/Co-g-C₃N₄ heterojunction catalyst and its photocatalytic performance[J].Catalysis Communications,2017,89:125-128.
[17] 刘文杰,袁华,左士祥,等.水热法制备TiO₂/g-C₃N₄及其光催化性能[J].材料科学与工程学报,2016,34(6):912-917;936.
[18] Dong G,zhang L.Porous structure dependent photoreactivity of graphitic carbon nitride under visible light[J].J Mater Chem,2012,22(3):1160-1166.
[19] 唐兴兴,袁军,江学良,等.不同形貌ZnO的制备及其光催化性能研究[J].化工新型材料,2018,46(2):197-200.
[20] Bai X J,Wang L,Zong R L,et al.Photocatalytic activity enhanced via g-C₃N₄ nanoplates to nanorods[J].Phyical Chemsistry C,2013,117(19):9952-9961.
[21] Sun Y J,Xiong T,Ni Z L,et al.Improving g-C₃N₄ photocatalysis for NO_x removal by Ag nanoparticles decoration[J].Appl Surf Sci,2015,358:356-362.