%0 Journal Article
%T g-C<sub>3</sub>N<sub>4</sub>纳米管/NiS<sub>2</sub>复合材料的制备及其光催化性能<br>Preparation and Photocatalytic Activity of g-C<sub>3</sub>N<sub>4</sub> Nanotube/NiS<sub>2</sub> Composites
%A 李思雨
%A 尹国庚
%A 潘鑫
%A 王洁
%A 李雨霏
%A 刘梦洁
%A 陈建军
%J Material Sciences
%P 1766-1774
%@ 2160-7621
%D 2024
%I Hans Publishing
%R 10.12677/ms.2024.1412191
%X 首先以三聚氰胺为原料&#65292;通过水热结合煅烧的方法制备了g-C<sub>3</sub>N<sub>4</sub>纳米管(tg-C<sub>3</sub>N<sub>4</sub>)。然后以硝酸镍和硫代乙酰胺为前驱体&#65292;通过水热的方法制备出tg-C<sub>3</sub>N<sub>4</sub>/NiS<sub>2</sub>复合材料。采用XRD、FTIR、TEM、UV-Vis、PL和电化学测试方法对其进行了表征。结果表明&#65292;与tg-C<sub>3</sub>N<sub>4</sub>相比&#65292;tg-C<sub>3</sub>N<sub>4</sub>/NiS<sub>2</sub>复合材料具有更强的光吸收性能和光生电子&#8211;空穴分离效率。通过可见光下降解罗丹明B对其催化性能进行评价。结果发现&#65306;当NiS<sub>2</sub>质量分数为3%时&#65292;复合材料呈现出最佳的光催化效率&#65292;其对罗丹明B降解速率为0.0635 min<sup>&#8722;1</sup>&#65292;是tg-C<sub>3</sub>N<sub>4</sub> (0.0145 min<sup>&#8722;1</sup>)的4.3倍。通过活性物种捕获实验可知&#65292;<math display='inline' xmlns='http://www.w3.org/1998/Math/MathML'>
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和&#183;OH在光催化降解过程中起着主要作用。<br>Firstly, g-C<sub>3</sub>N<sub>4</sub> nanotubes (tg-C<sub>3</sub>N<sub>4</sub>) were prepared by hydrothermal combined with thermal polyme- rization using melamine as raw material. Then tg-C<sub>3</sub>N<sub>4</sub>/NiS<sub>2</sub> composites were prepared by hydrothermal method using nickel nitrate and thioacetamide as precursors. The catalysts were characterized by XRD, FTIR, TEM, UV-Vis, PL and electrochemical tests. The results show that the tg-C<sub>3</sub>N<sub>4</sub>/NiS<sub>2</sub> composites have enhanced light absorption properties and photogenerated electron-hole separation efficiency compared with tg-C<sub>3</sub>N<sub>4</sub>. The catalytic performance was evaluated by visible light degradation of Rhodamine B. It was found that the composite exhibited the best photocatalytic efficiency when the NiS<sub>2</sub> mass fraction was 3%, and its degradation rate was 0.0635 min<sup>&#8722;1</sup>, which was 4.3 times as that of tg-C<sub>3</sub>N<sub>4</sub> (0.0145 min<sup>&#8722;1</sup>). According to the active species trapping experiment, <math display='inline' xmlns='http://www.w3.org/1998/Math/MathML'>
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 and &#183;OH played the main roles in the photocatalytic degradation process.
%K NiS<sub>2</sub>&#65292
%K g-C<sub>3</sub>N<sub>4</sub>纳米管&#65292
%K 复合材料&#65292
%K 光催化<br>NiS<sub>2</sub>
%K g-C<sub>3</sub>N<sub>4</sub> Nanotube
%K Composite
%K Photocatalysis
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=104050