Insights into the synthesis of monolithic and structured graphene bulks and its application for Cu2+ ions removal from aqueous solution

被引：1

作者：

Zhang H. ^{[1
,2
]}

Shi Z. ^{[1
]}

Wang X. ^{[3
]}

Xu X. ^{[4
]}

Tang Y. ^{[1
]}

Liu X. ^{[1
]}

Tian L. ^{[1
]}

Xiao Y. ^{[1
]}

Wu Z. ^{[2
]}

Wang H. ^{[5
]}

Yang Y. ^{[1
]}

机构：

[1] School of Civil Engineering, Lanzhou University of Technology, Lanzhou

[2] Institute of Nanomaterials Application Technology, Gansu Academy of Sciences, Lanzhou

[3] State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou

[4] School of Chemistry and Chemical Engineering, Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi

[5] School of Civil Engineering, Wuhan University, Wuhan

来源：

Separation and Purification Technology | 2023年 / 308卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

3D printing; Adsorption; Cu[!sup]2+[!/sup; GO; Printability;

D O I：

10.1016/j.seppur.2022.122847

中图分类号：

学科分类号：

摘要：

Graphene oxide (GO) was a promising adsorbent for the contaminants removal in the wastewater. However, the nanoscale GO with the properties of easy agglomeration and difficult to separate in the solution severely restricted its widespread practical application. Therefore, a monolithic and structured GO bulk was prepared by a 3D printing method and used as adsorbent for the removal of Cu2+ ions. The rheological property and printability of the ink, as well as the mechanical property and adsorption capacity of the printed GO bulk were investigated. It was found that the optimal ratio of GO: sodium alginate was 1.5:2.0 with the compressive strength was 6.23 MPa. Batch experiments exhibited that the Cu2+ sorption was an endothermic reaction and the maximum adsorption capacity calculated by Langmuir model was 179.32 mg/g at 303.15 K. Kinetics, FTIR and XPS analysis revealed that the mechanism of Cu2+ adsorption was mainly a chemical dominated process involving the oxygen functional groups contained in GO and sodium alginate. The desorption and regeneration test results indicated that the printed GO bulk was an ideal adsorbent for heavy metals removal in real applications due to its excellent adsorption capacity and convenient recycling performance. © 2022 Elsevier B.V.

引用

共 56 条

[1]

Gao X., Chen C.T., Heavy metal pollution status in surface sediments of the coastal Bohai Bay, Water Res, 46, 6, pp. 1901-1911, (2012)

[2]

Lagadic I.L., Mitchell M.K., Payne B.D., Highly Effective Adsorption of Heavy Metal Ions by a Thiol-Functionalized Magnesium Phyllosilicate Clay, Environ. Sci. Tech., 35, 5, pp. 984-990, (2001)

[3]

Rajeshkumar S., Et al., Studies on seasonal pollution of heavy metals in water, sediment, fish and oyster from the Meiliang Bay of Taihu Lake in China, Chemosphere, 191, pp. 626-638, (2018)

[4]

Ge T., Et al., Synthesis and application of Fe3O4/FeWO4 composite as an efficient and magnetically recoverable visible light-driven photocatalyst for the reduction of Cr (VI), Sep. Purif. Technol., 263, (2021)

[5]

Carolin C.F., Et al., Efficient techniques for the removal of toxic heavy metals from aquatic environment: A review, J. Environ. Chem. Eng., 5, 3, pp. 2782-2799, (2017)

[6]

Yao L., Et al., Photocatalytic properties of SnS2/SnO2 nanocomposite prepared by thermal oxidation of SnS2 nanoparticles in air, Sep. Purif. Technol., 122, pp. 1-5, (2014)

[7]

Wang Y., Et al., SnO2/SnS2 nanocomposite anchored on nitrogen-doped RGO for improved photocatalytic reduction of aqueous Cr (VI), Powder Technol., 363, pp. 337-348, (2020)

[8]

Zhang F., Et al., Efficient photocatalytic reduction of aqueous Cr (VI) by Zr4+ doped and polyaniline coupled SnS2 nanoflakes, Sep. Purif. Technol., 283, (2022)

[9]

Zare E.N., Motahari A., Sillanpaa M., Nanoadsorbents based on conducting polymer nanocomposites with main focus on polyaniline and its derivatives for removal of heavy metal ions/dyes: A review, Environ Res, 162, pp. 173-195, (2018)

[10]

Zhang L., Fu F., Tang B., pp. 151-160, (2019)

← 1 2 3 4 5 6 →