基于ZIF-8/C制备ZnO/C复合材料及光催化性能的研究
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摘要
本文采用常温搅拌法将Zn(NO_3)2·6H_2O、活性炭粉和2-甲基咪唑溶于甲醇中,得到一系列含不同质量分数活性炭粉的ZIF-8/C材料,500℃下煅烧,得到ZnO/C复合材料。利用傅里叶红外光谱(Fourier transform infrared spectroscopy,FT-IR)、孔径分布分析仪(Pore diameter analysis apparatus)、紫外-可见吸收光谱(UV-visible absorption spectra)、场发射扫描电子显微镜(Field emission scanning electron microscopy,FE-SEM)和X射线粉末衍射(Powder X-ray diffraction,PXRD)对前驱体和目标产品进行表征分析。这些结果表明前驱体和目标产品中分别含有ZIF-8和ZnO,加入活性炭粉可以拓展ZnO光催化剂的吸收光谱范围。目标产品具有介孔和大孔结构,其中ZnO/C-2的粒径更为均一。另外,在可见光和紫外光下考察目标产品对有机染色剂亚甲基蓝的光催化降解性能和稳定性。实验结果表明:目标产品ZnO/C-2的光催化性能最佳。
In this paper,a series of ZIF-8/C composite materials with different mass fractions of activated carbon were prepared by Zn( NO_3)2·6H_2O,activated carbon and 2-methylimidazole by stirring at normal temperature. After calcining at 500℃,ZnO/C products were obtained.Then,the precursor and product were characterized and analyzed by fourier transform infrared spectrum( FTIR),pore diameter analysis apparatus,UV-visible absorption spectra,field emission scanning electron microscope( FE-SEM) and powder X-ray diffraction( PXRD). The results showed that there were ZIF-8 and ZnO in the precursor and product,respectively.With the addition of activated carbon,the products expanded the range of UV-visible absorption spectra.The pore diameter results showed that the product had mesoporous structure and large pore size distribution.Among them,ZnO/C-2 had uniform-sized particles.In addition,the photocatalytic activity and stability of catalysts were evaluated by decolorization of methylene blue under visible-light and UV light.The experimental results showed that ZnO/C-2 exhibited the best photocatalytic activity for dye degradation.
In this paper,a series of ZIF-8/C composite materials with different mass fractions of activated carbon were prepared by Zn( NO_3)2·6H_2O,activated carbon and 2-methylimidazole by stirring at normal temperature. After calcining at 500℃,ZnO/C products were obtained.Then,the precursor and product were characterized and analyzed by fourier transform infrared spectrum( FTIR),pore diameter analysis apparatus,UV-visible absorption spectra,field emission scanning electron microscope( FE-SEM) and powder X-ray diffraction( PXRD). The results showed that there were ZIF-8 and ZnO in the precursor and product,respectively.With the addition of activated carbon,the products expanded the range of UV-visible absorption spectra.The pore diameter results showed that the product had mesoporous structure and large pore size distribution.Among them,ZnO/C-2 had uniform-sized particles.In addition,the photocatalytic activity and stability of catalysts were evaluated by decolorization of methylene blue under visible-light and UV light.The experimental results showed that ZnO/C-2 exhibited the best photocatalytic activity for dye degradation.
引文
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[18]洪保.基于ZIF-8复合物的光催化剂的制备及降解有机染料研究[D].辽宁大学硕士专业学位论文,2016:28-37.
[19]刘克峰,任丹妮,孙辉,等.ZIF-8的合成、表征及正己烷吸附性能[J].高等学校化学学报,2016,37(10):1856-1862.
[20]刘明明.基于类沸石咪唑酯骨架材料ZIF-8的催化性能研究[D].太原理工大学硕士学位论文,2014:29-39.
[21]Banerjee R,Phan A,Wang B,et al.High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2capture[J].Science,2008,319(5865):939-943.
[22]郭娇,张亚昆,陈改荣,等.不同溶剂ZIF-8基制备Zn O及可见光催化性能研究[J].化学研究与应用,2018,20(2):303-309.
[23]王辉,郭晓伟,陈改荣.球磨辅助固相法制备纳米Co3O4及光催化性能研究[J].化学研究与应用,2016,28(12):1744-1749.
[24]赵春艳,单秋杰,吴学峰.介孔结构Na10[α-Si W9O34]/Ti O2/Ag的合成及光催化性能研究[J].化学研究与应用,2016,28(2):153-157.
[25]Zhou J W,Zhang M,Zhu Y F.Preparation of visible lightdriven g-C3N4@Zn O hybrid photocatalyst via mechanochemistry[J]. Physical Chemistry Chemical Physics,2014,16(33):17627-17633.
[26]Guo J,Yang J,Liu Y Y,et al.Two novel 3D metal-organic frameworks based on two tetrahedral ligands:syntheses,structures,photoluminescence and photocatalytic properties[J].Cryst Eng Comm,2012,14(20):6609-6617.
[2]张琪颖.基于金属有机骨架材料的高效吸附剂研发[D].济南大学硕士学位论文,2016:1-12.
[3]陈凌云.基于ZIF-8新型复合材料的制备、表征及吸附性能研究[D].河南师范大学硕士论文学位论文,2017:1-23.
[4]周虎,张健,季东,等.纳米金属负载的ZIF-8复合材料制备与室温储氢性能[J].江苏科技大学学报(自然科学版),2017,31(3):381-384.
[5]许丽红,赵东宇,李阳,等.ZIF-8对向列相液晶电-光性能的提升[J].物理化学学报,2016,32(9):2377-2382.
[6]李耀.金属有机骨架材料ZIF-8的制备及吸附性能研究[D].北京交通大学硕士学位论文,2015:29-36.
[7]石琪.沸石咪唑酯骨架材料的合成与性能研究[D].太原理工大学博士学位论文,2012:8-9.
[8]王天龙,张燕,王新红,等.类沸石咪唑酯骨架材料(ZIFs)的研究进展[J].化工进展,2015,34(11):3959-3964.
[9]王晓丹,徐丹丹,吕维忠,等.抗癌载药体系Fe3O4@ZIF-8@PA的合成及药物释放[J].高等学校化学学报,2017,38(11):1927-1934.
[10]Lam S M,Sin J C,Abdullah A Z,et al. Degradation of wastewaters containing organic dyes photocatalysed by zinc oxide:A review[J]. Desalination and Water Treatment,2012,41(1-3):131-169.
[11]Muruganandham M,Chen I S,Wu J J.Effect of temperature on the formation of macroporous Zn O bundles and its application in photo-catalysis[J]. Journal of Hazardous Materials,2009,172(2):700-706.
[12]孔祥荣,刘琳,邱晨,等.氧化锌纳米棒的研究进展[J].材料导报,2009,23(5):105-108.
[13]徐小楠,张秋平,张琴,等.不同煅烧温度对溶胶-凝胶合成的纳米Zn O光催化效果的影响[J].材料导报,2016,30(2):18-23.
[14]宋优男.改良型Zn O光催化剂的制备及其光催化降解抗生素废水的研究[D].长安大学硕士学位论文,2013:20-23.
[15]刘冰冰.不同形貌Zn O材料的制备及其光催化性能研究[D].河南大学硕士学位论文,2014:11-13.
[16]陈英波,赵林飞,王彪,等.沸石咪唑骨架材料(ZIF-8)的结构生长过程[J].天津工业大学学报,2016,35(5):1-4.
[17]刘明明,吕文苗,史秀锋,等.不同方法合成的沸石咪唑酯骨架结构材料(ZIF-8)的表征和催化性能[J].无机化学学报,2014,30(3):579-584.
[18]洪保.基于ZIF-8复合物的光催化剂的制备及降解有机染料研究[D].辽宁大学硕士专业学位论文,2016:28-37.
[19]刘克峰,任丹妮,孙辉,等.ZIF-8的合成、表征及正己烷吸附性能[J].高等学校化学学报,2016,37(10):1856-1862.
[20]刘明明.基于类沸石咪唑酯骨架材料ZIF-8的催化性能研究[D].太原理工大学硕士学位论文,2014:29-39.
[21]Banerjee R,Phan A,Wang B,et al.High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2capture[J].Science,2008,319(5865):939-943.
[22]郭娇,张亚昆,陈改荣,等.不同溶剂ZIF-8基制备Zn O及可见光催化性能研究[J].化学研究与应用,2018,20(2):303-309.
[23]王辉,郭晓伟,陈改荣.球磨辅助固相法制备纳米Co3O4及光催化性能研究[J].化学研究与应用,2016,28(12):1744-1749.
[24]赵春艳,单秋杰,吴学峰.介孔结构Na10[α-Si W9O34]/Ti O2/Ag的合成及光催化性能研究[J].化学研究与应用,2016,28(2):153-157.
[25]Zhou J W,Zhang M,Zhu Y F.Preparation of visible lightdriven g-C3N4@Zn O hybrid photocatalyst via mechanochemistry[J]. Physical Chemistry Chemical Physics,2014,16(33):17627-17633.
[26]Guo J,Yang J,Liu Y Y,et al.Two novel 3D metal-organic frameworks based on two tetrahedral ligands:syntheses,structures,photoluminescence and photocatalytic properties[J].Cryst Eng Comm,2012,14(20):6609-6617.