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TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)

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罗肃霜, 杨春平, 何慧军, 龙智勇, 程燕. TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)[J]. 环境工程学报, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
引用本文: 罗肃霜, 杨春平, 何慧军, 龙智勇, 程燕. TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)[J]. 环境工程学报, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
shu
LUO Sushuang, YANG Chunping, HE Huijun, LONG Zhiyong, CHEN Yan. Synthesis of TiO2/chitosan/graphene oxide adsorbent beads for adsorption of As(Ⅲ)[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
Citation: LUO Sushuang, YANG Chunping, HE Huijun, LONG Zhiyong, CHEN Yan. Synthesis of TiO2/chitosan/graphene oxide adsorbent beads for adsorption of As(Ⅲ)[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
shu

TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)

  • 1.

    湖南大学环境科学与工程学院, 长沙 410082

  • 2.

    环境生物与控制教育部重点实验室(湖南大学), 长沙 410082

  • 3.

    浙江工商大学环境科学与工程学院, 浙江省固体废物处理与资源化重点实验室, 杭州 310018

  • 基金项目:

    国家自然科学基金资助项目（51278464，51478172）

    国家国际科技合作专项项目（2015DFG92750）

  • 中图分类号: X703

Synthesis of TiO2/chitosan/graphene oxide adsorbent beads for adsorption of As(Ⅲ)

  • 1.

    College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • 2.

    Key Laboratory of Environmental Biology and Pollution Control(Hunan University), Ministry of Education, Changsha 410082, China

  • 3.

    Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China

  • Fund Project:

  • 摘要: 用化学混合法将采用Hummer方法制备的氧化石墨烯加载到了二氧化钛/壳聚糖基复合微粒中，并用于水中As（Ⅲ）的去除。通过扫描电镜、Zeta电位仪和BET比表面积分析仪对微粒进行了表征。结果表明，经改性后的二氧化钛/壳聚糖/氧化石墨烯复合微粒在紫外光照下最大吸附容量可达12.43 mg·g-1，而二氧化钛/壳聚糖微粒的最大吸附量仅为4.97 mg·g-1。吸附动力学符合拟二级动力学模型，吸附等温线可用Langmuir模型描述。随pH值的增加，吸附剂对As（Ⅲ）的吸附量逐渐减小。该新型复合微粒吸附剂制备方式、合成条件简单，具有吸附容量较高和易于固液分离再生的优点，因此对水中除As（Ⅲ）有较好的应用前景。
    Abstract: Graphene oxide was synthesized using the Hummers method, then loaded onto TiO2/chitosan beads by a chemical mixed. TiO2/chitosan/graphene oxide beads (GO/TICB) were used as an adsorbent for removing As(Ⅲ) from an aqueous solution, and was characterized by a scanning electron microscope (SEM), Zeta SIZER, and a BET surface analyzer. Results indicated a maximum adsorption capacity of 12.43 mg·g-1 after modification of titanium dioxide/chitosan/graphene oxide composite particles under ultraviolet light. However, the maximum adsorption capacity approached 4.97 mg·g-1 without GO. The sorption processes coincided with a pseudo-second-order kinetic model, and the adsorption isotherm was described well by the Langmuir model. With the increase of pH, adsorbent adsorption of As(Ⅲ) decreased. Moreover, GO/TICB was synthesized easily, separated from water, and regenerated by alkali liquor. We can rationally expect that this novel composite bead will be an effective and prospect adsorbent for the removal of As(Ⅲ) from water.
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  • 收稿日期:  2015-04-21
  • 刊出日期:  2016-09-10
罗肃霜, 杨春平, 何慧军, 龙智勇, 程燕. TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)[J]. 环境工程学报, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
引用本文: 罗肃霜, 杨春平, 何慧军, 龙智勇, 程燕. TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)[J]. 环境工程学报, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
shu
LUO Sushuang, YANG Chunping, HE Huijun, LONG Zhiyong, CHEN Yan. Synthesis of TiO2/chitosan/graphene oxide adsorbent beads for adsorption of As(Ⅲ)[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
Citation: LUO Sushuang, YANG Chunping, HE Huijun, LONG Zhiyong, CHEN Yan. Synthesis of TiO2/chitosan/graphene oxide adsorbent beads for adsorption of As(Ⅲ)[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4873-4878. doi: 10.12030/j.cjee.201504092
shu

TiO2/壳聚糖/氧化石墨烯复合微粒的制备及吸附As(Ⅲ)

  • 1.  湖南大学环境科学与工程学院, 长沙 410082
  • 2.  环境生物与控制教育部重点实验室(湖南大学), 长沙 410082
  • 3.  浙江工商大学环境科学与工程学院, 浙江省固体废物处理与资源化重点实验室, 杭州 310018
  • 收稿日期:  2015-04-21
基金项目:

国家自然科学基金资助项目（51278464，51478172）

国家国际科技合作专项项目（2015DFG92750）

摘要: 用化学混合法将采用Hummer方法制备的氧化石墨烯加载到了二氧化钛/壳聚糖基复合微粒中，并用于水中As（Ⅲ）的去除。通过扫描电镜、Zeta电位仪和BET比表面积分析仪对微粒进行了表征。结果表明，经改性后的二氧化钛/壳聚糖/氧化石墨烯复合微粒在紫外光照下最大吸附容量可达12.43 mg·g-1，而二氧化钛/壳聚糖微粒的最大吸附量仅为4.97 mg·g-1。吸附动力学符合拟二级动力学模型，吸附等温线可用Langmuir模型描述。随pH值的增加，吸附剂对As（Ⅲ）的吸附量逐渐减小。该新型复合微粒吸附剂制备方式、合成条件简单，具有吸附容量较高和易于固液分离再生的优点，因此对水中除As（Ⅲ）有较好的应用前景。

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