Review
Chemistry, Inorganic & Nuclear
Ziyong Chang, Liang Zeng, Chunbao Sun, Peng Zhao, Jiayu Wang, Lining Zhang, Yangge Zhu, Xiaoyue Qi
Summary: Efficient recovery of precious metals from aqueous solutions or wastewater using nanomaterials has become a hot topic, due to their unique physical and chemical properties. Different types of nano adsorbents exhibit various advantages and mechanisms in PM adsorption, providing important technical support for PM recycling.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Qianyu Qiao, Yao Chen, Yue Wang, Yuqing Ren, Jiazhen Cao, Fengjiao Huang, Zhenfeng Bian
Summary: Photocatalytic recovery is a novel technology for recycling precious metals, which aims to solve the environmental and energy consumption problems caused by traditional technologies. By designing phosphate-modified titanium oxide, the adsorption intensity of oxygen on the catalyst surface is regulated, leading to enhanced dissolution rate of precious metals and improved recovery efficiency.
CHINESE CHEMICAL LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Yao Chen, Mengjiao Xu, Jieya Wen, Yu Wan, Qingfei Zhao, Xia Cao, Yong Ding, Zhong Lin Wang, Hexing Li, Zhenfeng Bian
Summary: This article presents a greener photocatalytic process for recovering up to seven precious metals from waste, demonstrating its potential for wide application and importance in implementing a circular economy.
NATURE SUSTAINABILITY
(2021)
Article
Chemistry, Multidisciplinary
Siyu Zhang, Qing Zhao, Dongsheng Wang, Shuo Deng, Dengyu Li, Xue Liu, Shuyao Wu, Xuejiao Zhang, Baoshan Xing
Summary: By functionalizing black phosphorus, a method has been developed to extract precious metals under mild conditions using thermo/near-infrared responsive materials, with high recovery efficiency, easy operation, and the ability for repeated recycling.
Article
Nanoscience & Nanotechnology
Vikram V. Karve, Till Schertenleib, Jordi Espin, Olga Trukhina, Xiyuan Zhang, Marta Ximenis Campins, Takashi Kitao, Claudia E. Avalos, Takashi Uemura, Wendy L. Queen
Summary: This study introduces a simple method for producing MOF/polymer composites and demonstrates their ability to selectively extract Ag+ ions from laundry wastewater for catalytic reactions. The research shows the impact of MOFs on polymer functionalities and highlights the potential for sustainable catalysts in the future.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Metallurgy & Metallurgical Engineering
Jonovan Van Yken, Naomi J. Boxall, Ka Yu Cheng, Aleksandar N. Nikoloski, Navid Moheimani, Anna H. Kaksonen
Summary: This study evaluated the economic feasibility of an integrated bio- and hydrometallurgical process for extracting and recovering base and precious metals from electronic waste. A preliminary techno-economic analysis was conducted to examine the potential costs and profitability of the proposed process. The findings suggest that the process is profitable under optimized conditions and can address challenges associated with e-waste processing.
Article
Nanoscience & Nanotechnology
Ranhao Wang, Siyuan Luo, Renji Zheng, Yangzi Shangguan, Xuezhen Feng, Qiang Zeng, Jiaxin Liang, Zhijie Chen, Jing Li, Dazhong Yang, Hong Chen
Summary: Through interfacial structure engineering, precious metal (PM) coordination-active pyridine groups were covalently integrated into ultrathin 1T-MoS2 to create Py-MoS2, which exhibits highly selective interfacial coordination bonding-assisted redox (ICBAR) functionality for PM recycling. Py-MoS2 shows state-of-the-art high recovery selectivity for Au3+ and Pd4+ in a mixture of 13 metal cations, with recovery capacities reaching 3343.00 and 2330.74 mg/g, respectively. Moreover, the ICBAR mechanism enables over 90% recovery efficiencies for representative PMs in electronic solid waste leachate, such as CPU and spent catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jamaliah Aburabie, Shabin Mohammed, Anilkumar Kumaran, Raed Hashaikeh
Summary: In this study, a polymeric membrane adsorber with high adsorption site density is proposed for selectively capturing palladium Pd ions, providing an effective substitution for palladium recovery from dilute solutions. The membranes exhibit high adsorption capacity, selectivity, mechanical stability, and reusability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jamaliah Aburabie, Shabin Mohammed, Anilkumar Kumaran, Raed Hashaikeh
Summary: In this study, a polymeric membrane adsorber with high adsorption site density for selectively capturing palladium ions was proposed. The developed membrane exhibited outstanding palladium adsorption capacity, high selectivity, and good reusability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Yao Chen, Huan He, Shuyang Xu, Zhengxi Zou, Weiming Hua, Zhenfeng Bian, Hexing Li, Yinghong Yue
Summary: A novel recycling method for precious metal catalysts using an eco-friendly photocatalytic dissolution technique has been developed. The method effectively recovers precious metals from deactivated catalysts by utilizing itself as the photocatalyst and re-deposits them on the carrier. This integrated dissolution-deposition technique can also be applied to other precious metal catalysts.
Article
Environmental Studies
Walid Mensi, Xuan Vinh Vo, Sang Hoon Kang
Summary: This paper examines the time-frequency connectedness between major precious metals markets and their importer and exporter countries' stock indices. The UK stock market is the largest contributor to and recipient of short-term spillovers, while Germany and Australia serve as the largest sources and recipients of long-term spillovers. Precious metals provide better hedging effectiveness than individual equity portfolios, especially in the short term for stock markets of precious metal-exporter economies.
Article
Engineering, Environmental
Adeyemi Ojutalayo Adeeyo, Olugbenga Solomon Bello, Oluwatobi Samuel Agboola, Rebecca Oyedoyin Adeeyo, Joshua Oyetade, Mercy Adewumi Alabi, Joshua Nosa Edokpayi, Rachel Makungo
Summary: The loss of valuable metals during extraction leads to waste of resources and environmental pollution. This review discusses the pollution, detection techniques, and recent treatment techniques for precious metals recovery. The results highlight gold, palladium, platinum, and silver as the most valuable metals, and nano-and bio-sorption techniques as pragmatic alternatives.
Article
Polymer Science
Katarzyna Witt, Wlodzimierz Urbaniak, Malgorzata A. Kaczorowska, Daria Bozejewicz
Summary: This study describes the use of a polymer film with Cyphos IL 101 for the simultaneous recovery of precious and heavy metal ions from waste electrical and electronic equipment, showing efficient recovery of precious metals but less efficient recovery of non-ferrous metals. The results indicate that the polymer film can be successfully regenerated and reused for multiple cycles of metal ion recovery.
Review
Chemistry, Applied
Hao Wu, Bo Qu, Thach Nguyen, Jon C. Lorenz, Frederic Buono, Nizar Haddad
Summary: This review provides a summary of recent developments in the field of nonprecious metal catalysis (NPMC) and highlights the synthetic applications covered in published research between July and October 2021. The increase in publications in NPMC indicates a widespread interest among academic and industrial research laboratories in the development and utilization of the catalytic applications of these metals.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Article
Engineering, Chemical
Jikang Wang, Yawen Wang, Wenbo Xiong, Zixian Li, Xianggui Kong, Hong Yan, Yanjun Lin, Haohong Duan, Yufei Zhao
Summary: The treatment and recycling of heavy metal pollutants play a crucial role in restoring the ecological environment and recovering valuable resources. A novel CaCr-layered double hydroxide (LDH) was successfully synthesized by extracting toxic Cr3+ from industrial wastewater, purifying it to meet discharge standards. The CaCr-LDH demonstrated a high capacity for the mineralization of multiple heavy metal ions, offering potential applications in environmental remediation and resource recovery.
CHEMICAL ENGINEERING SCIENCE
(2023)
