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1. 阜阳师范学院 化学与材料工程学院,安徽 阜阳,236037
2. 安徽环境污染物降解与监测省级实验室,安徽 阜阳,236037
纸质出版日期:2016-1-10,
收稿日期:2015-9-2,
修回日期:2015-11-11,
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崔玉民, 师瑞娟, 李慧泉等. 催化剂SiO<sub>2</sub>/CNI的制备及其在光解水制氢领域中的应用[J]. 发光学报, 2016,37(1): 7-12
CUI Yu-min, SHI Rui-juan, LI Hui-quan etc. Preparation of Composite Catalyst SiC-CdLa<sub>2</sub>S<sub>4</sub> and Its Application in Photocatalytic Decomposition of Water Hydrogen Production[J]. Chinese Journal of Luminescence, 2016,37(1): 7-12
崔玉民, 师瑞娟, 李慧泉等. 催化剂SiO<sub>2</sub>/CNI的制备及其在光解水制氢领域中的应用[J]. 发光学报, 2016,37(1): 7-12 DOI: 10.3788/fgxb20163701.0007.
CUI Yu-min, SHI Rui-juan, LI Hui-quan etc. Preparation of Composite Catalyst SiC-CdLa<sub>2</sub>S<sub>4</sub> and Its Application in Photocatalytic Decomposition of Water Hydrogen Production[J]. Chinese Journal of Luminescence, 2016,37(1): 7-12 DOI: 10.3788/fgxb20163701.0007.
以二氰二胺和碘化铵为前驱体
采用水浴-焙烧方法首次制备了CNI与SiO
2
不同质量比的SiO
2
/CNI复合光催化剂。采用X射线衍射(XRD)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、光致发光光谱(PL)和紫外-可见漫反射光谱(UV-Vis DRS)等对催化剂进行了表征。实验结果表明
与CNI相比
CNI/SiO
2
复合光催化剂具有更高的光催化活性。当SiO
2
与CNI的质量比为1:15时
SiO
2
/CNI催化剂样品的光解水产氢活性最高
光解水产氢速率为88.6mol/h。SiO
2
/CNI(1:15)样品之所以具有高活性主要有两方面原因:适量的SiO
2
与CNI复合可以使光生电子-空穴对的复合得到显著的抑制;SiO
2
与CNI复合使得SiO
2
/CNI对可见光(200~600 nm)吸收能力增强
且其吸收带边向长波方向移动。
Using dicyanodiamine and ammonium iodide as the precursors respectively
the SiO
2
/CNI composite photocatalysts with different mass ratio of SiO
2
and CNI were successfully prepared by a bath-calcination process. The samples were characterized by X-ray diffraction(XRD)
transmission electron microscopy (TEM)
X-ray photoelectron spectroscopy(XPS)
photoluminescence(PL) and UV-Vis diffuse reflection spectra(UV-Vis DRS)
respectively. The results show that the photocatalytic activity of the SiO
2
/CNI samples are greatly enhanced
compared with pure CNI. When the mass ratio of SiO
2
and CNI is 1:15
the activity of SiO
2
/CNI for photolysis water producing hydrogen is the highest
and the rate of photolysis water producing hydrogen of SiO
2
/CNI reaches 88.6mol/h. The enhanced photocatalytic activities can be mainly attributed to the fact that the proper composite of SiO
2
and CNI makes the recombination of the photoproduction electronic-hole pair be observably controlled
increases the absorption in 200-600 nm region and the absorption edge has a little shift to long wavelength.
二氰二胺碘化铵水浴-焙烧法SiO2/CNI光催化光解水产氢
dicyanodiamineammonium iodidebath-calcination processSiO2/CNIphotocatalystsphotolysis water producing hydrogen
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桂明生,王鹏飞,袁东,等. Bi2WO6/g-C3N4复合型催化剂的制备及其可见光光催化性 [J]. 无机化学学报, 2013, 29(10):2057-2064. GUI M S, WANG P F, YUAN D, et al.. Synthesis and visible-light photocatalytic activity of Bi2WO6/g-C3N4 composite photocatalysts [J]. Chin. J. Inorg. Chem., 2013, 29(10):2057-2064. (in Chinese).
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FINA F, CALLEAR S K, CANINS G M, et al.. Structural investigation of graphitic carbon nitride via XRD and neutron diffraction [J]. Chem. Mater., 2015, 27:2612-2618.
CUI Y M, JIA Q F, LI H Q, et al.. Photocatalytic activities of Bi2S3/BiOBr nanocomposites synthesized by a facile hydrothermal process [J]. Appl. Surf. Sci., 2014, 290:233-239.
郏青峰,刘向阳,崔玉民,等. MoO3/TiO2复合催化剂的制备及光活性 [J]. 人工晶体学报, 2013, 42(12):2601-2606. JIA Q F, LIU X Y, CUI Y M, et al.. Preparation and photoactivity of MoO3/TiO2 composite catalysts [J]. J. Synth. Cryst., 2013, 42(12):2601-2606. (in Chinese)
LI H Q, CUI Y M, HONG W S. High photocatalytic performance of BiOI/Bi2WO6 toward toluene and reactive brilliant red [J]. Appl. Surf. Sci., 2013, 264:581-588.
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