Shouchao Zhong, Yue Wang, Tao Bo, Jiahui Lan, Zeyu Zhang, Lang Sheng, Jing Peng, Long Zhao, Liyong Yuan, Maolin Zhai, Weiqun Shi
{"title":"利用简单易合成的共价有机骨架从电子垃圾中高效、选择性地回收黄金","authors":"Shouchao Zhong, Yue Wang, Tao Bo, Jiahui Lan, Zeyu Zhang, Lang Sheng, Jing Peng, Long Zhao, Liyong Yuan, Maolin Zhai, Weiqun Shi","doi":"10.1016/j.cej.2022.140523","DOIUrl":null,"url":null,"abstract":"With the increase of discarded electronic devices, gold recovery from e-waste has induced great interests. Covalent organic framework (COF) as a new kind of porous crystalline material has great advantages in gold recovery due to its large specific surface area, selective functional groups, regular channels and controllable synthesis. Herein, an abundant hydroxyl groups decorated COF (TzDa-COF) with simple structure and high crystallinity was prepared for gold recovery. TzDa-COF exhibits a great Au(III) uptake up to 1866 mg·g−1 with high selectivity and fast kinetics, which surpasses most of other COFs with complicated structures and multiple functional groups. Furthermore, dynamic adsorption column experiment for Au(III) in simulated e-waste was conducted, in which at a fast flow rate of 3 mL·min−1 almost a complete Au(III) removal was achieved. By using the density functional theory (DFT), powder X-ray diffraction, infrared spectroscopy and X-ray photoelectron spectroscopy, we demonstrate that the Au(III) recovery mechanism of TzDa-COF mainly consists of coordination and reduction. The performance of TzDa-COF suggests attractive opportunity in practical recovery of gold from e-waste.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":null,"pages":null},"PeriodicalIF":13.3000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Efficient and selective gold recovery from e-waste by simple and easily synthesized covalent organic framework\",\"authors\":\"Shouchao Zhong, Yue Wang, Tao Bo, Jiahui Lan, Zeyu Zhang, Lang Sheng, Jing Peng, Long Zhao, Liyong Yuan, Maolin Zhai, Weiqun Shi\",\"doi\":\"10.1016/j.cej.2022.140523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"With the increase of discarded electronic devices, gold recovery from e-waste has induced great interests. Covalent organic framework (COF) as a new kind of porous crystalline material has great advantages in gold recovery due to its large specific surface area, selective functional groups, regular channels and controllable synthesis. Herein, an abundant hydroxyl groups decorated COF (TzDa-COF) with simple structure and high crystallinity was prepared for gold recovery. TzDa-COF exhibits a great Au(III) uptake up to 1866 mg·g−1 with high selectivity and fast kinetics, which surpasses most of other COFs with complicated structures and multiple functional groups. Furthermore, dynamic adsorption column experiment for Au(III) in simulated e-waste was conducted, in which at a fast flow rate of 3 mL·min−1 almost a complete Au(III) removal was achieved. By using the density functional theory (DFT), powder X-ray diffraction, infrared spectroscopy and X-ray photoelectron spectroscopy, we demonstrate that the Au(III) recovery mechanism of TzDa-COF mainly consists of coordination and reduction. The performance of TzDa-COF suggests attractive opportunity in practical recovery of gold from e-waste.\",\"PeriodicalId\":270,\"journal\":{\"name\":\"Chemical Engineering Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":13.3000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1016/j.cej.2022.140523\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.cej.2022.140523","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Efficient and selective gold recovery from e-waste by simple and easily synthesized covalent organic framework
With the increase of discarded electronic devices, gold recovery from e-waste has induced great interests. Covalent organic framework (COF) as a new kind of porous crystalline material has great advantages in gold recovery due to its large specific surface area, selective functional groups, regular channels and controllable synthesis. Herein, an abundant hydroxyl groups decorated COF (TzDa-COF) with simple structure and high crystallinity was prepared for gold recovery. TzDa-COF exhibits a great Au(III) uptake up to 1866 mg·g−1 with high selectivity and fast kinetics, which surpasses most of other COFs with complicated structures and multiple functional groups. Furthermore, dynamic adsorption column experiment for Au(III) in simulated e-waste was conducted, in which at a fast flow rate of 3 mL·min−1 almost a complete Au(III) removal was achieved. By using the density functional theory (DFT), powder X-ray diffraction, infrared spectroscopy and X-ray photoelectron spectroscopy, we demonstrate that the Au(III) recovery mechanism of TzDa-COF mainly consists of coordination and reduction. The performance of TzDa-COF suggests attractive opportunity in practical recovery of gold from e-waste.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.