Статья

Superb Adsorption of Congo Red by Zn‐Cr Layered Bimetallic Hydroxides Prepared from Electroplated Sludge

Dehui KongGuangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangdong 510006 ChinaWenyu XieGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Maoming Guangdong 525000 ChinaJinxiong WuKey Laboratory of Phase Transitions and Microstructures in Condensed Matters School of Chemistry and Environmental Sciences Yili Normal University Xinjiang, Yining 835000 ChinaXiuling YanKey Laboratory of Phase Transitions and Microstructures in Condensed Matters School of Chemistry and Environmental Sciences Yili Normal University Xinjiang, Yining 835000 ChinaAndrei IvanetsInstitute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus Surganova St., 9/1 220072 Minsk BelarusLijuan ZhangGuangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangdong 510006 ChinaShasha ChuGuangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangdong 510006 ChinaBo YangGuangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangdong 510006 ChinaBekchanov DavronbekDepartment of Polymer Chemistry National University of Uzbekistan Tashkent 100174 UzbekistanXintai SuGuangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangdong 510006 China

ChemistrySelectjournal2022en

ABI

Аннотация

Abstract It is a challenge to achieve the harmless treatment and resourceful use of various metal elements in electroplating sludge, and converting them into functional materials has become an important technological direction. Based on the existence of various metal ions in electroplating sludge, sodium oleate intercalated Zn−Cr‐LDHs (Zn−Cr‐layered double hydroxides) were prepared by two‐phase solution heating method. The adsorption process of the prepared LDHs for Congo red (CR) in aqueous solution can be described by Langmuir isotherm model and pseudo‐second‐order kinetic model and the maximum adsorption capacity is 2750.43 mg/g. The results of TEM and XPS show that the adsorption mechanism is dominated by electrostatic adsorption, ion exchange process, hydrogen bonding interaction and surface complexation. Therefore, this paper provides a strategy for recovering metal elements from electroplating sludge to prepare LDHs adsorption materials with ultra‐high adsorption capacity.

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Темы

Layered Double Hydroxides Synthesis and Applications Adsorption and biosorption for pollutant removal Nanomaterials for catalytic reactions

Идентификаторы

DOI: 10.1002/slct.202202684

Цитирования и источники

Цитирований: 1 Использованных источников: 49

Показатели — AkademScholar