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g-C3N4/RGO的制备、光催化降解性能及其降解机理

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郭桂全, 胡巧红, 王承林, 闫朋涛, 李印峰, 赵一帆, 连璐, 韩雪雯. g-C3N4/RGO的制备、光催化降解性能及其降解机理[J]. 环境化学, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
引用本文: 郭桂全, 胡巧红, 王承林, 闫朋涛, 李印峰, 赵一帆, 连璐, 韩雪雯. g-C3N4/RGO的制备、光催化降解性能及其降解机理[J]. 环境化学, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
shu
GUO Guiquan, HU Qiaohong, WANG Chenglin, YAN Pengtao, LI Yinfeng, ZHAO Yifan, LIAN Lu, HAN Xuewen. Preparation, photocatalytic degradation performance and degradation mechanism of g-C3N4/RGO[J]. Environmental Chemistry, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
Citation: GUO Guiquan, HU Qiaohong, WANG Chenglin, YAN Pengtao, LI Yinfeng, ZHAO Yifan, LIAN Lu, HAN Xuewen. Preparation, photocatalytic degradation performance and degradation mechanism of g-C3N4/RGO[J]. Environmental Chemistry, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
shu

g-C3N4/RGO的制备、光催化降解性能及其降解机理

  • 邢台学院, 邢台, 054001

    • 通讯作者: 郭桂全, E-mail: guoguiquan1979@163.com ; 
  • 基金项目:

    邢台市2018年市级民生科技保障专项项目（2018ZZ18）和邢台学院2018年度校级重点科研项目（XTXYZD004）资助.

Preparation, photocatalytic degradation performance and degradation mechanism of g-C3N4/RGO

  • Xingtai University, Xingtai, 054001, China

    • Corresponding author: GUO Guiquan, guoguiquan1979@163.com ; 
  • Fund Project: Supported by Xingtai Municipal People's Livelihood Science and Technology Security Special Project in 2018(2018ZZ18) and Key Scientific Research Projects of Xingtai University in 2018(XTXYZD004).

  • 摘要: 尿素固相反应得到石墨相氮化碳（g-C3N4），石墨（G）被氧化制得氧化石墨（GO），GO被还原制得石墨烯（RGO），通过3种复合方法分别制得g-C3N4/RGO材料.通过对污染物亚甲基蓝、罗丹明B和甲基橙的降解，考察了g-C3N4与GO不同复合比9.7：1、9.3：1、9：1、8：1和6.7：1对光催化剂g-C3N4/RGO光催化性能的影响.同时考察了复合物对污染物的选择性降解.用X-射线衍射谱（XRD）和傅里叶变换红外光谱（FT-IR）对催化剂的结构性质进行了表征.结果表明，g-C3N4与GO混合-水合肼还原-高温固相反应法制备的g-C3N4/RGO，时间最短，产量较高，对罗丹明B的降解效果最佳，说明该方法较好.另外，当g-C3N4与GO的质量比为9.7：1时，制备的g-C3N4/RGO降解效果最佳.还有，该复合材料对亚甲基蓝的降解效果最佳，罗丹明B次之，甲基橙最差.机理研究结果表明超氧自由基在光催化过程中起主导作用，羟基自由基起次要作用.
    Abstract: Graphite phase carbon nitride (g-C3N4) was obtained by urea solid phase reaction, graphite (G) was oxidized to prepare graphite oxide (GO), GO was reduced to obtain graphene (RGO), and g-C3N4/RGO was prepared by three composite methods. Through the degradation of methylene blue, rhodamine B and methyl orange, the effects of different composite ratios of g-C3N4 and GO, 9.7:1, 9.3:1, 9:1, 8:1 and 6.7:1, on the performance of photocatalyst g-C3N4/RGO were investigated. At the same time, the selective degradation of pollutants by the composite was investigated. The structure and properties of the catalyst was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR). The results showed that the g-C3N4/RGO prepared by the method of mixing g-C3N4 and GO-hydrazine hydrate reduction-high temperature solid-phase reaction had the shortest time, higher yield and the best degradation effect on rhodamine B, indicating that the method was better. In addition, when the mass ratio of g-C3N4 to GO was 9.7:1, the prepared g-C3N4/RGO had the best degradation effect. In addition, the composite material had the best degradation effect on methylene blue, followed by rhodamine B and methyl orange. The results of mechanism studies showed that superoxide radicals played a dominant role in the photocatalytic process, while hydroxyl radicals played a secondary role.
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  • 收稿日期:  2019-09-25
郭桂全, 胡巧红, 王承林, 闫朋涛, 李印峰, 赵一帆, 连璐, 韩雪雯. g-C3N4/RGO的制备、光催化降解性能及其降解机理[J]. 环境化学, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
引用本文: 郭桂全, 胡巧红, 王承林, 闫朋涛, 李印峰, 赵一帆, 连璐, 韩雪雯. g-C3N4/RGO的制备、光催化降解性能及其降解机理[J]. 环境化学, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
shu
GUO Guiquan, HU Qiaohong, WANG Chenglin, YAN Pengtao, LI Yinfeng, ZHAO Yifan, LIAN Lu, HAN Xuewen. Preparation, photocatalytic degradation performance and degradation mechanism of g-C3N4/RGO[J]. Environmental Chemistry, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
Citation: GUO Guiquan, HU Qiaohong, WANG Chenglin, YAN Pengtao, LI Yinfeng, ZHAO Yifan, LIAN Lu, HAN Xuewen. Preparation, photocatalytic degradation performance and degradation mechanism of g-C3N4/RGO[J]. Environmental Chemistry, 2021, (3): 808-817. doi: 10.7524/j.issn.0254-6108.2019092605
shu

g-C3N4/RGO的制备、光催化降解性能及其降解机理

  • 收稿日期:  2019-09-25
基金项目:

邢台市2018年市级民生科技保障专项项目（2018ZZ18）和邢台学院2018年度校级重点科研项目（XTXYZD004）资助.

摘要: 尿素固相反应得到石墨相氮化碳（g-C3N4），石墨（G）被氧化制得氧化石墨（GO），GO被还原制得石墨烯（RGO），通过3种复合方法分别制得g-C3N4/RGO材料.通过对污染物亚甲基蓝、罗丹明B和甲基橙的降解，考察了g-C3N4与GO不同复合比9.7：1、9.3：1、9：1、8：1和6.7：1对光催化剂g-C3N4/RGO光催化性能的影响.同时考察了复合物对污染物的选择性降解.用X-射线衍射谱（XRD）和傅里叶变换红外光谱（FT-IR）对催化剂的结构性质进行了表征.结果表明，g-C3N4与GO混合-水合肼还原-高温固相反应法制备的g-C3N4/RGO，时间最短，产量较高，对罗丹明B的降解效果最佳，说明该方法较好.另外，当g-C3N4与GO的质量比为9.7：1时，制备的g-C3N4/RGO降解效果最佳.还有，该复合材料对亚甲基蓝的降解效果最佳，罗丹明B次之，甲基橙最差.机理研究结果表明超氧自由基在光催化过程中起主导作用，羟基自由基起次要作用.

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