还原石墨烯/硫化镉纳米棒复合材料制备及其光催化性能
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摘要
为调控硫化镉尺寸和形貌,采用水热法合成了还原型氧化石墨烯/硫化镉纳米棒(RGO/Cd S)复合材料,采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、傅里叶变换红外光谱(FT-IR)等方法对产物进行了表征。通过调节硫化镉颗粒成核和生长速度,在乙二胺溶剂中水热合成了结构规整的硫化镉纳米棒及与石墨烯的复合材料。紫外分析表明,RGO/Cd S禁带宽度为2.81 e V。光催化降解实验表明,RGO/Cd S对甲基橙具有良好的光催化降解作用,当甲基橙溶液质量浓度为20 mg/L、RGO/Cd S用量为0.2%(质量分数)时,在可见光下反应480 min,甲基橙降解率可达96.3%。RGO/Cd S在光催化氧化处理废水领域具有潜在的应用价值。
To control the size and morphology of Cd S,the reduced graphene oxide/Cd S(RGO/Cd S) nanorod composites were prepared by hydrothermal method.The as-prepared products were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope and Fourier transform infrared spectrum(FT-IR).The well-structured Cd S and RGO/Cd S were prepared by adjusting the nucleation and growth rate of Cd S in ethylenediamine solution by hydrothermal method.UV-Vis results showed that,the band gap of RGO/Cd S was 2.81 e V.As the mass concentration of methyl orange was 20 mg/L,the dosage of RGO/Cd S was 0.2%(mass fraction),the degradation time was 480 min,the degradation rate of methyl orange was 96.3% under the visible light.RGO/Cd S showed an application potential in the field of waste water treatment of photocatalysis and oxidation.
To control the size and morphology of Cd S,the reduced graphene oxide/Cd S(RGO/Cd S) nanorod composites were prepared by hydrothermal method.The as-prepared products were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope and Fourier transform infrared spectrum(FT-IR).The well-structured Cd S and RGO/Cd S were prepared by adjusting the nucleation and growth rate of Cd S in ethylenediamine solution by hydrothermal method.UV-Vis results showed that,the band gap of RGO/Cd S was 2.81 e V.As the mass concentration of methyl orange was 20 mg/L,the dosage of RGO/Cd S was 0.2%(mass fraction),the degradation time was 480 min,the degradation rate of methyl orange was 96.3% under the visible light.RGO/Cd S showed an application potential in the field of waste water treatment of photocatalysis and oxidation.
引文
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[2]姜楠.Ⅱ-Ⅵ族硫化物纳米复合材料的制备及其光催化性能研究[D].济南:山东大学,2013.
[3]胡琼.石墨烯-半导体复合光催化剂的微波合成及性能研究[D].昆明:昆明理工大学,2016.
[4]宗恺,汪浩,刘晶冰,等.石墨烯在光催化反应中应用的研究进展[J].化工进展,2012,31(12):2736-2742.
[5]康乐,张耀君,杨梦阳,等.石墨烯纳米复合材料合成及其在光催化氧化降解和还原制备氢能中应用的研究进展[J].材料导报,2016(19):54-62.
[6]陈洁.石墨烯/Cd S纳米粒子杂化结构的制备与光催化研究[D].长春:长春工业大学,2015.
[7]王新伟.石墨烯及石墨烯基金属硫化物杂化材料的合成和光催化性能的研究[D].长春:吉林大学,2014.
[8]付民.石墨烯基复合材料的制备及性能研究[D].北京:北京理工大学,2016.
[9]孟楠楠.二维纳米材料基复合催化剂的制备及性能研究[D].合肥:安徽大学,2016.
[10]任竹运.金属硫化物的可控合成、改性及其光催化性能研究[D].福州:福州大学,2014.
[11]周凯,张建锋,朱维晃.石墨烯/还原石墨烯修饰对Cd S/FTO复合电极光电响应和稳定性的影响[J].功能材料,2018,49(5):5016-5022,5027.
[12]王磊,刘辰雨,王振卫,等.二氧化钛-硫化镉/还原氧化石墨烯复合材料光催化降解废水中有机物的研究[J].应用技术学报,2017,17(2):165-170.
[13]Xian J J,Li D Z,Chen J,et al.Ti O2Nanotube array-graphene-Cd S quantum dots composite film in Z-scheme with enhanced photoactivity and photostability[J].ACS Applied Materials&Interfaces,2014,6(15):13157-13166.
[14]Kasinath Ojha,Tushar Debnath,Partha Maity,et al.Exciton separation in Cd S supraparticles upon conjugation with graphene sheets[J].The Journal of Physical Chemistry C,2017,121(12):6581-6588.
[15]张博,姚伟峰,宋秀兰,等.硫化物光催化剂的形貌控制及光催化性能的研究进展[J].化工进展,2012,31(1):83-90.
[16]贺国旭,王耀先,李松田,等.石墨烯-聚苯胺复合材料的制备及表征[J].化工新型材料,2016,44(7):40-42.
[17]Wu Q,Zhao H F,Huang F,et al.Impacts of reduced graphene oxide in Cd S/Cd Se quantum dots Co-sensitized solar cells[J].Journal of Physical Chemistry C,2017,121(34):18430-18438.
[18]Spirito D,Kudera S,Miseikis V,et al.UV Light detection from Cd S nanocrystal sensitized graphene photodetectors at k Hz frequencies[J].Journal of Physical Chemistry C,2015,119(42):23859-23864.
[19]Pan X,Xu Y J.Graphene-templated bottom-up fabrication of ultralarge binary Cd S-Ti O2nanosheets for photocatalytic selective reduction[J].Journal of Physical Chemistry C,2015,119(13):7184-7194.
[20]Bera R,Kundu S,Patra A.2D hybrid nanostructure of reduced graphene oxide-Cd S nanosheet for enhanced photocatalysis[J].ACS Applied Materials&Interfaces,2015,7(24):13251-13259.
[21]Li Q,Guo B,Yu J,et al.Highly efficient visible-light-eriven photocatalytic hydrogen production of Cd S-cluster-decorated graphene nanosheets[J].Journal of American Chemical Society,2011,133(28):10878-10884.
[22]苏明星,王卫,倪亚茹,等.RGO/Ti O2复合光催化剂的制备与光催化性能研究[J].化工新型材料,2013,41(10):86-88.
[23]Zhang N,Zhang Y H,Pan X Y,et al.Constructing ternary Cd S-graphene-Ti O2hybrids on the flatland of graphene oxide with enhanced visible-light photoactivity for selective transformation[J].Journal of Physical Chemistry C,2012,116(34):18023-18031.
[24]陈章.石墨烯基半导体纳米复合材料的可控合成及其光催化性能研究[D].福州:福州大学,2014.
[25]Jia L,Wang D H,Huang Y X,et al.Highly durable N-doped graphene/Cd S nanocomposites with enhanced photocatalytic hydrogen evolution from water under visible light irradiation[J].Journal of Physical Chemistry C,2011,115(23):11466-11473.