MOF衍生的多孔ZnO/C、Ag/ZnO/C复合材料光催化性能研究

doi:10.15541/jim20150201

无机材料学报 ›› 2015, Vol. 30 ›› Issue (12): 1321-1326.DOI: 10.15541/jim20150201 CSTR: 32189.14.10.15541/jim20150201

MOF衍生的多孔ZnO/C、Ag/ZnO/C复合材料光催化性能研究

郭艳蓉¹, 常薇¹, 张雯², 汪辉³

(1. 西安工程大学环境与化学工程学院, 西安 710048; 2. 西安交通大学理学院, 西安 710049; 3. 西安交通大学能动学院, 西安 710049)

收稿日期:2015-04-24 修回日期:2015-06-26 出版日期:2015-12-20 网络出版日期:2015-11-24
作者简介:郭艳蓉(1991–), 女, 硕士研究生. E-mail: 1227225213@qq.com
基金资助:
中央高校基本科研业务费(08143053);西安碑林科技计划项目(JX1419);西安工程大学研究生创新基金(CX2014022)

Photocatalytic Properties of MOF-derived ZnO/C, Ag/ZnO/C Porous Composite Materials

GUO Yan-Rong¹, CHANG Wei¹, ZHANG Wen², WANG Hui³

(1. College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China; 2. School of Science, Xi’an Jiaotong University, Xi’an 710049, China; 3. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Received:2015-04-24 Revised:2015-06-26 Published:2015-12-20 Online:2015-11-24
About author:GUO Yan-Rong. E-mail: 1227225213@qq.com

摘要/Abstract

摘要：

以金属有机骨架(MOF-5)为前驱体, 通过高温热处理和湿化学法获得ZnO/C和Ag/ZnO/C两种光催化复合材料。采用X 射线衍射(XRD)、扫描电子显微镜(SEM)、X射线能谱(EDS)和紫外-可见分光漫反射(UV-Vis DRS)等方法对所得样品的晶体结构、形貌特征、组成及光谱特性进行了表征。结果显示, 高温热处理保留了MOF-5的原始结构。ZnO/C比表面积为390 m²/g, 载银后比表面积仍达232 m²/g, 负载的银颗粒尺寸约30 nm。光催化降解实验表明ZnO/C和Ag/ZnO/C复合材料对亚甲基蓝(MB)都具有很高的降解效率, 均优于商业TiO₂。Ag/ZnO/C的光催化性能更好, 且具有较好的重复利用和稳定性。因此, 适度的高温碳化和掺杂贵金属是获得优良光催化性能的根本原因。

关键词: 金属有机骨架, 掺杂, 氧化锌, 改性, 光催化

Abstract:

Two photocatalytic materials, ZnO/C and Ag/ZnO/C, were synthesized by high temperature heat-treatment and wet-chemical methods using a typical metal-organic framework (MOF-5) as precursor. The samples were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), X-ray energy dispersive spectroscope (EDS), and UV-Vis diffuse reflection spectroscope (UV-Vis DRS), respectively. After heat-treatment under nitrogen, the initial morphology of MOF-5 is mostly retained. As a result, relatively high surface area up to 390 m²/g of ZnO/C and 232 m²/g of Ag/ZnO/C are realized. The size of Ag particles loaded on Ag/ZnO/C is about 30 nm. The photocatalytic efficiencies of both ZnO/C and Ag/ZnO/C composites on photo-degradation of methylene blue (MB) are higher than that of commercial TiO₂ powder (Degussa P25). Ag/ZnO/C possesses even higher photocatalytic ability, repeatability and stability than does ZnO/C. The results strongly suggest that high temperature heat-treatment of the MOF properly followed by moderate silver doping is a facile way to improve the photocatalytic properties.

Key words: metal-organic framework, dopping, ZnO, modification, photocatalysis

中图分类号:

TQ132

郭艳蓉, 常薇, 张雯, 汪辉. MOF衍生的多孔ZnO/C、Ag/ZnO/C复合材料光催化性能研究[J]. 无机材料学报, 2015, 30(12): 1321-1326.

GUO Yan-Rong, CHANG Wei, ZHANG Wen, WANG Hui. Photocatalytic Properties of MOF-derived ZnO/C, Ag/ZnO/C Porous Composite Materials[J]. Journal of Inorganic Materials, 2015, 30(12): 1321-1326.

图/表 8

图1 (a) MOF-5及其衍生物MOF-5 (b) 的XRD图谱

Fig. 1 XRD patterns of (a) MOF-5 and (b) derivatives

图2 (a) ZnO/C, (b)AZC-1, (c) Ag/MOF-5和(d)AZC-2样品的SEM照片及EDS分析结果

Fig. 2 SEM images of samples (a) ZnO/C, (b) AZC-1, (c) Ag/MOF-5, (d) AZC-2, and corresponding EDS patterns for (b) and (d)

表1 样品的物理特性

Table 1 Physical property of the samples

Sample	MOF-5	ZnO/C	AZC-1	Ag/MOF-5	AZC-2
BET/(m²•g^-1)	766	390	232	21	21
Pore volume/(mL•g^-1)	0.477	0.599	0.568	0.145	0.076

图3 复合材料的紫外可见漫反射谱曲线

Fig. 3 UV-Vis diffuse reflection spectra of composite materials

图4 样品对亚甲基蓝(MB)的吸附曲线

Fig. 4 Absorption curves for different samples of methylene blue

图5 样品对亚甲基蓝(MB)的光催化降解曲线

Fig. 5 Photo-degradation curves of methylene blue for different samples

图6 样品重复使用光催化降解亚甲基蓝(MB)

Fig. 6 Recycling uses of the samples for Methylene Blue (MB)

图7 AZC-1光催化降解实验机理示意图[17]

Fig. 7 Scheme diagram of photodegradation mechanism of AZC-1[17]

参考文献 17

[1]	ROWSELL J L C, YAGHI O M. Metal-organic frameworks: a new class of porous materials. Microporous and Mesoporous Materials, 2004, 73(1): 3-14.
[2]	LI J R, KUPPLER R J, ZHOU H C.Selective gas adsorption and separation in metal-organic frameworks. Chem. Soc. Rev., 2009, 38(5): 1477-1504.
[3]	LI H, EDDAOUDI M.Design and synthesis of an exceptionally stable and highly porous metal-organic framework.Nature, 1999, 402(6759): 276-279.
[4]	ROSI N L, ECKERT J, EDDAOUDI M.Hydrogen storage in microporous metal-organic framework.Science, 2003, 300(5622): 1127-l129.
[5]	TURNER S, LEBEDEV O I.Direct imaging of loaded metal-organic framework materials.Chem. Mater., 2008, 20(17): 5622-5627.
[6]	LI H H, SHI W, ZHAO K N.Ehance hydro stability in Ni-doped MOF-5.Inorg. Chem., 2012, 51(17): 9200-9207.
[7]	OPETT S, TURK S, DIETZSCH E.Preparation of palladium supported on MOF-5 and its use as hydrogenation catalyst.Catalysis Communications, 2008, 9(6): 1286-1290.
[8]	LIN L Y, YEH M H.Enhanced performance of a flexible dye-sensitized solar cell with a composite semiconductor film of ZnO nanorods and ZnO nanoparticles.Electrochimica Acta, 2012, 62: 341-347.
[9]	KAUSHIK V, SHUKLA A K, VANKAR V D.Carbon-ZnO nanocomposite thin films for enhanced electron field emission characteristics prepared by continuous wave CO2 laser ablation.Vacuum, 2014, 106: 21-26.
[10]	SUN M M, CHEN Z Y, BU Y Y.Effect of ZnO on the corrosion of zinc, Q235 carbon steel and 304 stainless steel under white light illumination.Corrosion Science, 2014, 82: 77-84.
[11]	TANG Y L, LI Z J, MA J Y.Ammonia gas sensors based on ZnO/SiO2 bi-layer nanofilms on ST-cut quartz surface acoustic wave devices.Sensors and Actuators B, 2014, 201: 114-121.
[12]	ZHANG Q F, DANDENEAU C S, ZHOU X Y.ZnO Nanostructures for dye-sensitized sloar cells.Adv. Mater., 2009, 21(41): 4087-4108.
[13]	JIANG B J, WANG P F, HOU Z W.In situ Growth of zinc oxide within expended graphite and ehanced photocatalytic performance.Chemical Journal of Chiese Universities, 2011, 30(11): 2544-2548.
[14]	YANG S J, IM J H, KIM T.MOF-derived ZnO and ZnO@C composites with high photocatalytic avtivity and adsorption capacity.Journal of Hazardous Materials, 2011, 186(1): 376-382.
[15]	YOO D H, CUONG T V, LUAN V H.Photo-catalytic performance of a Ag/ZnO/CCG multi- dimensional heterostructure prepared by a solution-based method. J. Phys. Chem. C, 2012, 116(12): 7180-7184.
[16]	AGUIRRE M E, RODRIGUE H B. ROMAN E S.Ag@ZnO core-shell nanoparticles formed by the timely reduction of Ag+ ions and zinc acetate hydrolysis in N,N-Dimethylformamide: mechanism of growth and photocatalytic properties.J. Phys. Chem. C, 2011, 115(50): 24967-24974.
[17]	ZHENG Y H, CHEN C Q.Photocatalytic activity of Ag/ZnO heterostructure nanocatalyst: correlation between structure and property.J. Phys. Chem. C, 2008, 112(29): 10773-10777.

MOF衍生的多孔ZnO/C、Ag/ZnO/C复合材料光催化性能研究

Photocatalytic Properties of MOF-derived ZnO/C, Ag/ZnO/C Porous Composite Materials

RichHTML

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 17

相关文章 15

编辑推荐

Metrics

本文评价

[1]	沈浩, 陈倩倩, 周渤翔, 唐晓东, 张媛媛. A位La/Sr共掺杂PbZrO₃薄膜的制备及储能特性优化[J]. 无机材料学报, 2024, 39(9): 1022-1028.
[2]	程俊, 张家伟, 仇鹏飞, 陈立东, 史迅. P掺杂β-FeSi₂材料的制备与热电输运性能[J]. 无机材料学报, 2024, 39(8): 895-902.
[3]	马彬彬, 钟婉菱, 韩涧, 陈椋煜, 孙婧婧, 雷彩霞. ZIF-8/TiO₂复合介观晶体的制备及光催化活性[J]. 无机材料学报, 2024, 39(8): 937-944.
[4]	赵志翰, 郭鹏, 魏菁, 崔丽, 刘山泽, 张文龙, 陈仁德, 汪爱英. Ti-DLC薄膜压阻性能及载流子输运行为研究[J]. 无机材料学报, 2024, 39(8): 879-886.
[5]	李家琪, 李小松, 李煊赫, 朱晓兵, 朱爱民. 暖等离子体合成过渡金属掺杂氧化锰析氧电催化剂[J]. 无机材料学报, 2024, 39(7): 835-844.
[6]	曹青青, 陈翔宇, 吴健豪, 王筱卓, 王乙炫, 王禹涵, 李春颜, 茹菲, 李兰, 陈智. SiO₂增强自敏性氮化碳微球可见光降解盐酸四环素的研究[J]. 无机材料学报, 2024, 39(7): 787-792.
[7]	蔡和庆, 韩璐, 杨松松, 薛新玉, 张扣, 孙志成, 刘儒平, 胡堃, 危岩. 小粒径Fe₃O₄-DMSA-PEI磁性纳米颗粒的制备及其基因负载能力研究[J]. 无机材料学报, 2024, 39(5): 517-524.
[8]	王兆阳, 秦鹏, 蒋胤, 冯小波, 杨培志, 黄富强. 三明治结构钌插层二氧化钛光催化四环素降解性能研究[J]. 无机材料学报, 2024, 39(4): 383-389.
[9]	叶茂森, 王耀, 许冰, 王康康, 张胜楠, 冯建情. II/Z型Bi₂MoO₆/Ag₂O/Bi₂O₃异质结可见光催化降解四环素[J]. 无机材料学报, 2024, 39(3): 321-329.
[10]	TAM YU Puy Mang, 徐愉, 高泉浩, 周海琼, 张振, 尹浩, 李真, 吕启涛, 陈振强, 马凤凯, 苏良碧. 掺铒CaF₂、SrF₂、PbF₂晶体的光谱性能与团簇结构研究[J]. 无机材料学报, 2024, 39(3): 330-336.
[11]	李秋实, 殷广明, 吕伟超, 王怀尧, 李婧琳, 杨红光, 关芳芳. Na⁺/g-C₃N₄材料的制备及光催化降解亚甲基蓝机理[J]. 无机材料学报, 2024, 39(10): 1143-1150.
[12]	戴乐, 刘洋, 高轩, 王书豪, 宋雅婷, 唐明猛, 刘丽莎, 汪尧进. 浓度梯度掺杂实现BiFeO₃薄膜自极化[J]. 无机材料学报, 2024, 39(1): 99-106.
[13]	苏楠, 邱介山, 王治宇. 高容量氟掺杂碳包覆纳米硅负极材料: 气相氟化法制备及其储锂性能[J]. 无机材料学报, 2023, 38(8): 947-953.
[14]	李跃军, 曹铁平, 孙大伟. S型异质结Bi₄O₅Br₂/CeO₂的制备及其光催化CO₂还原性能[J]. 无机材料学报, 2023, 38(8): 963-970.
[15]	王新玲, 周娜, 田亚文, 周明冉, 韩静茹, 申远升, 胡执一, 李昱. SnS₂/ZIF-8衍生二维多孔氮掺杂碳纳米片复合材料的锂硫电池性能研究[J]. 无机材料学报, 2023, 38(8): 938-946.