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Zinkowska K, Hubicki Z, Wójcik G. Kinetic and Thermodynamic Studies of Precious Metals Sorption on Impregnated Lewatit VP OC 1026 from Chloride Solutions. Chemphyschem 2024; 25:e202300817. [PMID: 38100298 DOI: 10.1002/cphc.202300817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
Precious metals are used in many branches of industries. Due to their rarity and diminishing natural resources, more and more new methods are being sought to recover them from secondary sources, which can be electronic waste or spent car exhaust converters. This paper presents the research on the recovery of precious metals from chloride solutions using the Aliquat 336-impregnated Lewatit VP OC 1026 sorbent. The study used a warm impregnation method without toxic solvents, which is beneficial for the environment. The maximal sorption capacities obtained for model solutions in 0.1 M HCl were: 95.6 mg/g for gold, 38.2 mg/g for palladium, and 36.2 mg/g for platinum. There were studied: kinetics and thermodynamics of sorption, as well as amounts of the sorbent, effects of phase contact time and HCl concentration on the sorption of precious metals. Positive values of enthalpy change ΔH° validate that the process is endothermic. The research was also carried out on a real leaching solution obtained by digesting a spent catalytic converter, containing small amounts of platinum group metals. Desorption of precious metal ions was conducted using 1 M thiourea in 1 M hydrochloric acid. The obtained impregnated sorbent proved to be effective for sorption of Au(III), Pd(II), Pt(IV) ions.
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Affiliation(s)
- Karolina Zinkowska
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Zbigniew Hubicki
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Grzegorz Wójcik
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
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He X, Liu S, Hu X, Huang X, Zhang H, Mao X. Precious metal clusters as fundamental agents in bioimaging usability. Front Chem 2023; 11:1296036. [PMID: 38025077 PMCID: PMC10665568 DOI: 10.3389/fchem.2023.1296036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Fluorescent nanomaterials (NMs) are widely used in imaging techniques in biomedical research. Especially in bioimaging systems, with the rapid development of imaging nanotechnology, precious metal clusters such as Au, Ag, and Cu NMs have emerged with different functional agents for biomedical applications. Compared with traditional fluorescent molecules, precious metal clusters have the advantages of high optical stability, easy regulation of shape and size, and multifunctionalization. In addition, NMs possess strong photoluminescent properties with good photostability, high release rate, and sub-nanometer size. They could be treated as fundamental agents in bioimaging usability. This review summarizes the recent advances in bioimaging utilization, it conveys that metal clusters refer to Au, Ag, and Cu fluorescent clusters and could provide a generalized overview of their full applications. It includes optical property measurement, precious metal clusters in bioimaging systems, and a rare earth element-doped heterogeneous structure illustrated in biomedical imaging with specific examples, that provide new and innovative ideas for fluorescent NMs in the field of bioimaging usability.
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Affiliation(s)
- Xiaoxiao He
- Department of Medical Engineering, Daping Hospital, Army Medical University, Chongqing, China
| | - Shaojun Liu
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Xi Hu
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Xiongyi Huang
- Department of Medical Engineering, Daping Hospital, Army Medical University, Chongqing, China
| | - Hehua Zhang
- Department of Medical Engineering, Daping Hospital, Army Medical University, Chongqing, China
| | - Xiang Mao
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
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Jung Y, Seok SH, Jung KW, Park J, Kwon SY, Choi JW. Nitrogen-Doped Titanium Carbide (Ti 3 C 2 T x ) MXene Nanosheet Stack For Long-Term Stability and Efficacy in Au and Ag Recovery. Small 2023; 19:e2305247. [PMID: 37518852 DOI: 10.1002/smll.202305247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/01/2023] [Indexed: 08/01/2023]
Abstract
The development of efficient adsorbents for the practical recovery of precious metals from electronic waste is vital to advanced energy/environment industries. Ti3 C2 Tx MXene-based materials are promising adsorbents for aqueous environments; however, the highly defective and super hydrophilic nature of the MXene surface hinders its practical applications. Here, we report that nitrogen-doped MXene (N-MXene) nanosheet stacks, prepared via high-energy planetary ball milling under N2 purging, exhibited a long-term stable and excellent recovery capability for Au and Ag ions via the nitrogenation of defective vacancies. Notably, these microscale nanosheets could facilitate the sustainable production of Au and Ag from secondary sources, exhibiting a high recovery rate and capability (1198 mg g-1 for Au and 1528 mg g-1 for Ag), long-term stable storability (21 d), and high selectivity (Kd of 1.67 × 106 for Au and 2.07 × 107 for Ag). Furthermore, the reversible redox chemistry of N-MXene facilitated its repeated use in adsorption/desorption cycles.
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Affiliation(s)
- Youngkyun Jung
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Shi-Hyun Seok
- Department of Materials Science and Engineering and Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Kyung-Won Jung
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jaeeun Park
- Department of Materials Science and Engineering and Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Soon-Yong Kwon
- Department of Materials Science and Engineering and Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jae-Woo Choi
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
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Cenci MP, Eidelwein EM, Veit HM. Composition and recycling of smartphones: A mini-review on gaps and opportunities. Waste Manag Res 2023; 41:1512-1528. [PMID: 37052313 DOI: 10.1177/0734242x231164324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
After more than a decade since smartphones became consolidated in the market, many recycling solutions have been proposed to deal with them. To continue developing useful solutions and enable adjustment of routes, this mini-review aims to analyse the current research scenario, presenting relevant gaps, trends and opportunities. From a structured searching and screening procedure, a vast source of data was arranged and is available to extract useful information (43 studies on composition and 93 studies on recycling). The study provides discussions about the history of smartphone development, constituent materials and recycling methods for different components, comparisons between feature phones and smartphones and others. Among some conclusions, the authors highlight the lack of studies on pre-extractive methods, green chemistry, recovery of critical and precious metals, determination of priority materials for recovery and solutions for entire devices. In the end, a list containing six research gaps for composition studies and seven research gaps for recycling studies is provided and may be seen as opportunities for future research.
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Affiliation(s)
- Marcelo Pilotto Cenci
- LACOR, Department of Materials Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Estela Moschetta Eidelwein
- LACOR, Department of Materials Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Hugo Marcelo Veit
- LACOR, Department of Materials Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Mohapatra D, Shin Y, Ansari MZ, Kim Y, Park YJ, Cheon T, Kim H, Lee JW, Kim S. Process Controlled Ruthenium on 2D Engineered V-MXene via Atomic Layer Deposition for Human Healthcare Monitoring. Adv Sci (Weinh) 2023; 10:e2206355. [PMID: 36814343 PMCID: PMC10131817 DOI: 10.1002/advs.202206355] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/31/2023] [Indexed: 06/18/2023]
Abstract
In searching for unique and unexplored 2D materials, the authors try to investigate for the very first time the use of delaminated V-MXene coupled with precious metal ruthenium (Ru) through atomic layer deposition (ALD) for various contact and noncontact mode of real-time temperature sensing applications at the human-machine interface. The novel delaminated V-MXene (DM-V2 CTx ) engineered ruthenium-ALD (Ru-ALD) temperature sensor demonstrates a competitive sensing performance of 1.11% °C-1 as of only V-MXene of 0.42% °C-1 . A nearly threefold increase in sensing and reversibility performance linked to the highly ordered few-layered V-MXene and selective, well-controlled Ru atomic doping by ALD for the successful formation of Ru@DM-V2 CTX heterostructure. The advanced heterostructure formation, the mechanism, and the role of Ru have been comprehensively investigated by ultra-high-resolution transmission/scanning transmission electron microscopies coupled with next-generation spherical aberration correction technology and fast, accurate elemental mapping quantifications, also by ultraviolet photoelectron spectroscopy. To the knowledge, this work is the first to use the novel, optimally processed V-MXene over conventionally used Ti-MXene and its surface-internal structure engineering by Ru-ALD process-based temperature-sensing devices function and operational demonstrations. The current work could potentially motivate the development of multifunctional, future, next-generation, safe, personal healthcare electronic devices by the industrially scalable ALD technique.
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Affiliation(s)
- Debananda Mohapatra
- School of Materials Science and EngineeringYeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea
| | - Yujin Shin
- Department of Materials Science and EngineeringPusan National UniversityGeumjeong‐guBusan46241Republic of Korea
| | - Mohd Zahid Ansari
- School of Materials Science and EngineeringYeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea
| | - Youn‐Hye Kim
- School of Materials Science and EngineeringYeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea
| | - Ye Jin Park
- School of Materials Science and EngineeringYeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea
| | - Taehoon Cheon
- Center for Core Research FacilitiesDaegu Gyeongbuk Institute of Science & Technology (DGIST)Sang‐ri, Hyeonpung‐myeonDalseong‐gunDaegu711‐873Republic of Korea
| | - Haekyoung Kim
- School of Materials Science and EngineeringYeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea
| | - Jung Woo Lee
- Department of Materials Science and EngineeringPusan National UniversityGeumjeong‐guBusan46241Republic of Korea
| | - Soo‐Hyun Kim
- Graduate School of Semiconductor Materials and Devices EngineeringUlsan National Institute of Science and Technology (UNIST)Ulju‐gunUlsan44919Republic of Korea
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Boldt A, Walter J, Hofbauer F, Stetter K, Aubel I, Bertau M, Jäger CM, Walther T. Cell-free synthesis of silver nanoparticles in spent media of different Aspergillus species. Eng Life Sci 2023; 23:e202200052. [PMID: 36874609 PMCID: PMC9978913 DOI: 10.1002/elsc.202200052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/17/2022] [Accepted: 12/17/2022] [Indexed: 01/14/2023] Open
Abstract
The recovery and valorization of metals and rare earth metals from wastewater are of great importance to prevent environmental pollution and recover valuable resources. Certain bacterial and fungal species are capable of removing metal ions from the environment by facilitating their reduction and precipitation. Even though the phenomenon is well documented, little is known about the mechanism. Therefore, we systematically investigated the influence of nitrogen sources, cultivation time, biomass, and protein concentration on silver reduction capacities of cell-free cultivation media (spent media) of Aspergillus niger, A. terreus, and A. oryzae. The spent medium of A. niger showed the highest silver reduction capacities with up to 15 μmol per milliliter spent medium when ammonium was used as the sole N-source. Silver ion reduction in the spent medium was not driven by enzymes and did not correlate with biomass concentration. Nearly full reduction capacity was reached after 2 days of incubation, long before the cessation of growth and onset of the stationary phase. The size of silver nanoparticles formed in the spent medium of A. niger was influenced by the nitrogen source, with silver nanoparticles formed in nitrate or ammonium-containing medium having an average diameter of 32 and 6 nm, respectively.
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Affiliation(s)
- Alexander Boldt
- Institute of Natural Materials Technology TU Dresden Dresden Germany
| | - Jan Walter
- Institute of Chemical Technology TU Freiberg Freiberg Germany
| | - Fabian Hofbauer
- Institute of Natural Materials Technology TU Dresden Dresden Germany
| | - Karen Stetter
- Institute of Natural Materials Technology TU Dresden Dresden Germany
| | - Ines Aubel
- Institute of Chemical Technology TU Freiberg Freiberg Germany
| | - Martin Bertau
- Institute of Chemical Technology TU Freiberg Freiberg Germany
| | - Christof M Jäger
- Department of Chemical and Environmental Engineering University of Nottingham Nottingham UK.,Data Science and Modelling, Pharmaceutical Sciences, R&D AstraZeneca Gothenburg Mölndal Sweden
| | - Thomas Walther
- Institute of Natural Materials Technology TU Dresden Dresden Germany
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7
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Wójcik G, Górska-Parat M, Hubicki Z, Zinkowska K. Selective Recovery of Gold from Electronic Waste by New Efficient Type of Sorbent. Materials (Basel) 2023; 16:924. [PMID: 36769929 PMCID: PMC9917452 DOI: 10.3390/ma16030924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/12/2023] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
Modular connectors are applied by computer users, and they can be metallic secondary sources containing metals such as gold and copper. Because gold is a micro-component, the solution obtained after the pin digestion contains a low concentration of gold(III) ions, and efficient and selective sorbent should be used for gold(III) ion recovery. The selective removal of small amounts of gold(III) from 0.001-6 M hydrochloric acid solutions using pure and solvent-impregnated macroporous polystyrene crosslinked with divinylbenzene sorbents (Purolite MN 202 and Cyanex 272) is presented. Gold(III) ions were recovered effectively from the chloride solution after the digestion of the modular connector RJ 45 (8P8C) using Purolite MN 202 after the impregnation process. The dependence of the recovery percentage (R%) of gold(III) on the contact time was determined. The highest value of gold(III) ion sorption capacity (259.45 mg·g-1) was obtained in 0.001 M HCl for Purolite MN202 after the Cyanex 272 impregnation. The results can be applied to gold recovery from e-waste. The presented method of gold recovery does not generate nitrogen oxides and does not require the use of cyanides.
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Marobhe MI, Kansheba JMP. High frequency volatility spillover between oil and non-energy commodities during crisis and tranquil periods. SN Bus Econ 2023; 3:91. [PMID: 37007434 PMCID: PMC10049898 DOI: 10.1007/s43546-023-00463-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 02/23/2023] [Indexed: 03/31/2023]
Abstract
In this article, we scrutinize volatility spillover between oil and individual non-energy commodities during crisis and non-crisis periods. We use high-frequency data to capture the effects of both the global financial crisis (2008) and the COVID-19 pandemic between 2008 and 2022. To this end, we utilize wavelet coherence analysis to diagnose the magnitudes of dynamic co-movements and lead-lag effects between commodities. Our results provide evidence of strong coherence between oil and the majority of individual non-energy commodities during both crises. Precious metals were generally found to exhibit heightened levels of co-movement with oil as opposed to other non-energy commodities. On the other hand, weak co-movements were found between oil and a few commodities, namely soy, wheat, zinc, and tin. The lead-lag effects of oil on agricultural commodities, base metals, and precious metals were evident, especially during crisis periods. However, aluminium and precious metals, especially gold, silver, and palladium, also had a lead-lag effect on oil at different points in time, including during the pandemic. We further utilize dynamic frequency-domain connectedness for capturing pairwise volatility spillover indices, with the results providing evidence of heightened volatility spillovers during turbulent times. Our findings have significant implications for retail investors, portfolio managers, and policymakers.
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Affiliation(s)
- Mutaju Isaack Marobhe
- Department of Finance and Accounting, Tanzania Institute of Accountancy, Dar es Salaam, Tanzania
- SSM-ESAMI Research Centre, Swiss School of Management, Bellinzona, Switzerland
| | - Jonathan Mukiza Peter Kansheba
- Department of Management, School of Business and Law, Universitetet i Agder, Kristiansand, Vest-Agder, Norway
- Thomas School of Business, University of North Carolina, Pembroke, NC USA
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Dorovskikh SI, Vikulova ES, Sergeevichev DS, Guselnikova TY, Zheravin AA, Nasimov DA, Vasilieva MB, Chepeleva EV, Saprykin AI, Basova TV, Morozova NB. Biological Studies of New Implant Materials Based on Carbon and Polymer Carriers with Film Heterostructures Containing Noble Metals. Biomedicines 2022; 10:biomedicines10092230. [PMID: 36140329 PMCID: PMC9496383 DOI: 10.3390/biomedicines10092230] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 11/18/2022] Open
Abstract
This paper presents pioneering results on the evaluation of noble metal film hetero-structures to improve some functional characteristics of carbon-based implant materials: carbon-composite material (CCM) and carbon-fiber-reinforced polyetheretherketone (CFR-PEEK). Metal-organic chemical vapor deposition (MOCVD) was successfully applied to the deposition of Ir, Pt, and PtIr films on these carriers. A noble metal layer as thin as 1 µm provided clear X-ray imaging of 1−2.5 mm thick CFR-PEEK samples. The coated and pristine CCM and CFR-PEEK samples were further surface-modified with Au and Ag nanoparticles (NPs) through MOCVD and physical vapor deposition (PVD) processes, respectively. The composition and microstructural features, the NPs sizes, and surface concentrations were determined. In vitro biological studies included tests for cytotoxicity and antibacterial properties. A series of samples were selected for subcutaneous implantation in rats (up to 3 months) and histological studies. The bimetallic PtIr-based heterostructures showed no cytotoxicity in vitro, but were less biocompatible due to a dense two-layered fibrous capsule. AuNP heterostructures on CFR-PEEK promoted cell proliferation in vitro and exhibited a strong inhibition of bacterial growth (p < 0.05) and high in vitro biocompatibility, especially Au/Ir structures. AgNP heterostructures showed a more pronounced antibacterial effect, while their in vivo biocompatibility was better than that of the pristine CFR-PEEK, but worse than that of AuNP heterostructures.
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Affiliation(s)
- Svetlana I. Dorovskikh
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Evgeniia S. Vikulova
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - David S. Sergeevichev
- «E. Meshalkin National Medical Research Center» of the Ministry of Health of the Russian Federation, 15 Rechkunovskaya Str., 630055 Novosibirsk, Russia
| | - Tatiana Ya. Guselnikova
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Alexander A. Zheravin
- «E. Meshalkin National Medical Research Center» of the Ministry of Health of the Russian Federation, 15 Rechkunovskaya Str., 630055 Novosibirsk, Russia
| | - Dmitriy A. Nasimov
- Rzhanov Institute of Semiconductor Physics SB RAS, 13 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Maria B. Vasilieva
- «E. Meshalkin National Medical Research Center» of the Ministry of Health of the Russian Federation, 15 Rechkunovskaya Str., 630055 Novosibirsk, Russia
- Zelman Institute for the Medicine and Psychology, Novosibirsk State University, 1, Pirogov Str., 630090 Novosibirsk, Russia
| | - Elena V. Chepeleva
- «E. Meshalkin National Medical Research Center» of the Ministry of Health of the Russian Federation, 15 Rechkunovskaya Str., 630055 Novosibirsk, Russia
| | - Anatoly I. Saprykin
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Tamara V. Basova
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Natalya B. Morozova
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences SB RAS, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
- Correspondence: ; Tel.: +7-3833309556
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Joudeh N, Saragliadis A, Schulz C, Voigt A, Almaas E, Linke D. Transcriptomic Response Analysis of Escherichia coli to Palladium Stress. Front Microbiol 2021; 12:741836. [PMID: 34690987 PMCID: PMC8533678 DOI: 10.3389/fmicb.2021.741836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 12/13/2022] Open
Abstract
Palladium (Pd), due to its unique catalytic properties, is an industrially important heavy metal especially in the form of nanoparticles. It has a wide range of applications from automobile catalytic converters to the pharmaceutical production of morphine. Bacteria have been used to biologically produce Pd nanoparticles as a new environmentally friendly alternative to the currently used energy-intensive and toxic physicochemical methods. Heavy metals, including Pd, are toxic to bacterial cells and cause general and oxidative stress that hinders the use of bacteria to produce Pd nanoparticles efficiently. In this study, we show in detail the Pd stress-related effects on E. coli. Pd stress effects were measured as changes in the transcriptome through RNA-Seq after 10 min of exposure to 100 μM sodium tetrachloropalladate (II). We found that 709 out of 3,898 genes were differentially expressed, with 58% of them being up-regulated and 42% of them being down-regulated. Pd was found to induce several common heavy metal stress-related effects but interestingly, Pd causes unique effects too. Our data suggests that Pd disrupts the homeostasis of Fe, Zn, and Cu cellular pools. In addition, the expression of inorganic ion transporters in E. coli was found to be massively modulated due to Pd intoxication, with 17 out of 31 systems being affected. Moreover, the expression of several carbohydrate, amino acid, and nucleotide transport and metabolism genes was vastly changed. These results bring us one step closer to the generation of genetically engineered E. coli strains with enhanced capabilities for Pd nanoparticles synthesis.
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Affiliation(s)
- Nadeem Joudeh
- Department of Biosciences, University of Oslo, Oslo, Norway
| | | | - Christian Schulz
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - André Voigt
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Eivind Almaas
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Dirk Linke
- Department of Biosciences, University of Oslo, Oslo, Norway
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Thabo B, Okoli BJ, Modise SJ, Nelana S. Rejection Capacity of Nanofiltration Membranes for Nickel, Copper, Silver and Palladium at Various Oxidation States. Membranes (Basel) 2021; 11:653. [PMID: 34564470 DOI: 10.3390/membranes11090653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 11/30/2022]
Abstract
Electroplating and metalworking industries produce enormous amounts of waste containing heavy metals in their effluents, leading to potential threats to biotic and abiotic life. According to regulation, heavy metal contamination must be kept within the regulated standard of a few parts per million, which has led to a recent pique in interest in the utilization of nanofiltration technology for metal recovery. The effect of feed pH, pressure, metal concentration, and oxidation of metal on the rejection of heavy metal ions using three commercial nanofiltration membranes (NF, NF90, and NF270) were explored. To begin, studies of electrolyte salts, contact angle, and water permeability were employed to characterize the nanofiltration membranes. A dead-end module was used to test the permeation and retention capacities of the nanofiltration membranes. The results showed an increase in salt rejection for all metals examined irrespective of the membrane, at a pH below the isoelectric point. For divalent cations, the NF90 membrane achieved recovery capacities of 97% and 85% at 200 ppm and 20 ppm respectively, as compared to the recovery observed for Ni2+, Cu2+, and Pd2+ ions by NF and NF270. At a pH 2, 20 ppm and 5 bar, the NF90 membrane had the highest percent recovery, but at a pH 3, the recovery was at 95%. Mono and divalent stable Ag+ and Ni2+ ions showed a comparatively high percent recovery as compared to Pd2+ and Cu2+, which have high molecular weight and charge effect. In the presence of chelating agents, the membrane surface area is increased, resulting in high divalent ion recovery capacities due to favourable interaction with the polyamide functional group of the membranes. This study establishes the significance of oxidation in high removal efficiency cation in varying experimental conditions.
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12
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Li X, Xie Y, Li Z. Diversity of Luminescent Metal Complexes in OLEDs: Beyond Traditional Precious Metals. Chem Asian J 2021; 16:2817-2829. [PMID: 34378344 DOI: 10.1002/asia.202100784] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/07/2021] [Indexed: 12/14/2022]
Abstract
Organic light-emitting diodes (OLED) have attracted increasing attention due to their excellent properties, such as self-luminosity, high color gamut and flexibility, and potential applications in display, wearable devices and lighting. The emitters are the most important composition in OLEDs, mainly classified into fluorescent compounds (first generation), metal phosphorescent complexes (second generation), and thermally activated delayed fluorescence (TADF) materials (third generation). In this review, we summarize the advances of novel emitters of organic metal complexes in the last decade, focusing on coinage metals (Cu, Ag, and Au) and non-precious metals (Al, Zn, W, and alkali metal). Also, the design strategy of d10 and Au(III) complexes was discussed. We aim to provide guidance for exploring efficient metal complexes beyond traditional phosphorescent complexes.
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Affiliation(s)
- Xiaoning Li
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Yujun Xie
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhen Li
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, P. R. China.,Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou, 350207, P. R. China.,Wuhan National Laboratory for Optoelectronics, Wuhan, 430074, P. R. China
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13
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Serpe A, Pilia L, Balestri D, Marchiò L, Deplano P. Characterization and Structural Insights of the Reaction Products by Direct Leaching of the Noble Metals Au, Pd and Cu with N, N'-Dimethyl-piperazine-2,3-dithione/I 2 Mixtures. Molecules 2021; 26:4721. [PMID: 34443309 PMCID: PMC8400658 DOI: 10.3390/molecules26164721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022] Open
Abstract
In the context of new efficient and safe leaching agents for noble metals, this paper describes the capability of the Me2pipdt/I2 mixture (where Me2pipdt = N,N'-dimethyl-piperazine-2,3-dithione) in organic solutions to quantitatively dissolve Au, Pd, and Cu metal powders in mild conditions (room temperature and pressure) and short times (within 1 h in the reported conditions). A focus on the structural insights of the obtained coordination compounds is shown, namely [AuI2(Me2pipdt)]I3 (1), [Pd(Me2pipdt)2]I2 (2a) and [Cu(Me2pipdt)2]I3 (3), where the metals are found, respectively, in 3+, 2+ and 1+ oxidation states, and of [Cu(Me2pipdt)2]BF4 (4) and [Cu(Me2dazdt)2]I3 (5) (Me2dazdt = N,N'-dimethyl-perhydrodizepine-2,3-dithione) compared with 3. Au(III) and Pd(II) (d8 configuration) form square-planar complexes, whereas Cu(I) (d10) forms tetrahedral complexes. Density functional theory calculations performed on the cationic species of 1-5 help to highlight the nature of the bonding in the different complexes. Finally, the valorization of the noble metals-rich leachates is assessed. Specifically, gold metal is quantitatively recovered from the solution besides the ligands, showing the potential of these systems to promote metal recycling processes.
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Affiliation(s)
- Angela Serpe
- Department of Civil and Environmental Engineering and Architecture, INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Environmental Geology and Geoengineering Institute of the National Research Council (IGAG-CNR), Via Marengo 2, 09123 Cagliari, Italy
| | - Luca Pilia
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy;
| | - Davide Balestri
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Luciano Marchiò
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Paola Deplano
- Department of Chemical and Soil Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy
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14
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Wu H, Wang Y, Jones LO, Liu W, Zhang L, Song B, Chen XY, Stern CL, Schatz GC, Stoddart JF. Selective Separation of Hexachloroplatinate(IV) Dianions Based on Exo-Binding with Cucurbit[6]uril. Angew Chem Int Ed Engl 2021; 60:17587-17594. [PMID: 34031957 DOI: 10.1002/anie.202104646] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 05/13/2021] [Indexed: 01/10/2023]
Abstract
The recognition and separation of anions attracts attention from chemists, materials scientists, and engineers. Employing exo-binding of artificial macrocycles to selectively recognize anions remains a challenge in supramolecular chemistry. We report the instantaneous co-crystallization and concomitant co-precipitation between [PtCl6 ]2- dianions and cucurbit[6]uril, which relies on the selective recognition of these dianions through noncovalent bonding interactions on the outer surface of cucurbit[6]uril. The selective [PtCl6 ]2- dianion recognition is driven by weak [Pt-Cl⋅⋅⋅H-C] hydrogen bonding and [Pt-Cl⋅⋅⋅C=O] ion-dipole interactions. The synthetic protocol is highly selective. Recognition is not observed in combinations between cucurbit[6]uril and six other Pt- and Pd- or Rh-based chloride anions. We also demonstrated that cucurbit[6]uril is able to separate selectively [PtCl6 ]2- dianions from a mixture of [PtCl6 ]2- , [PdCl4 ]2- , and [RhCl6 ]3- anions. This protocol could be exploited to recover platinum from spent vehicular three-way catalytic converters and other platinum-bearing metal waste.
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Affiliation(s)
- Huang Wu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Yu Wang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Leighton O Jones
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Wenqi Liu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Long Zhang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Bo Song
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Xiao-Yang Chen
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Charlotte L Stern
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - George C Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA.,School of Chemistry, University of New South Wales, Sydney, NSW, 2052, Australia.,Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
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15
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Salviulo G, Lavagnolo MC, Dabalà M, Bernardo E, Polimeno A, Sambi M, Bonollo F, Gross S. Enabling Circular Economy: The Overlooked Role of Inorganic Materials Chemistry. Chemistry 2021; 27:6676-6695. [PMID: 33749911 DOI: 10.1002/chem.202002844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 01/13/2021] [Indexed: 12/16/2022]
Abstract
Circular economy is considered a new chance to build a more sustainable world from both the social and the economic point of view. In this Essay, the possible contribution of inorganic chemistry towards a smooth transition to circularity in inorganic materials design and production is discussed by adopting an interdisciplinary approach.
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Affiliation(s)
- Gabriella Salviulo
- Dipartimento di Geoscienze, Università degli Studi di Padova, Via Gradenigo, 6, 35131, Padova, Italy.,Centro di Ateneo per i Diritti Umani "Antonio Papisca", Università di Padova, Via Martiri della Libertà 2, 35131, Padova, Italy
| | - Maria Cristina Lavagnolo
- Dipartimento di Ingegneria Civile, Edile e Ambientale, Università degli Studi di Padova, Via Marzolo 9, 35131, Padova, Italy
| | - Manuele Dabalà
- Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, Via Marzolo 9, 35131, Padova, Italy
| | - Enrico Bernardo
- Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, Via Marzolo 9, 35131, Padova, Italy
| | - Antonino Polimeno
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Mauro Sambi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Franco Bonollo
- Dipartimento di Tecnica e Gestione dei Sistemi Industriali, Università degli Studi di Padova, Str. S. Nicola, 3, 36100, Vicenza, Italy
| | - Silvia Gross
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova, Italy
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16
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Das D, Mukherjee S, Chaudhuri MG. Studies on leaching characteristics of electronic waste for metal recovery using inorganic and organic acids and base. Waste Manag Res 2021; 39:242-249. [PMID: 32564701 DOI: 10.1177/0734242x20931929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, we report leaching of precious and scattered metals such as gold (Au), copper (Cu), nickel (Ni), zinc (Zn), iron (Fe), and lead (Pb) from printed circuit boards of scrap mobile phones by hydrometallurgical process using inorganic acid, organic acid and base. The amount of metals leached by different leachants are quantified using atomic absorption spectroscopy. Among various inorganic acids, aqua regia (mixture of nitric acid (HNO3) and hydrochloric acid) is found to be the strongest leachant for most of the metals such as Zn (2.04 wt %), Fe (17.90 wt %), Ni (0.66 wt %), Pb (5.86 wt %) and Au (0.04 wt %). The basic leachant, ammonium thiosulphate is found to be very effective in leaching of Au (0.03125 wt %). The dissolution of Cu in HNO3 gives the highest amount of Cu in the solvent, that is, ∼ 7.52 wt %. The metallic phases present in the electronic waste before and after leaching are identified by X-ray diffraction analysis. The microscopic structure has been studied using a scanning electron microscope which depicts erosion of the structure after leaching.
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Affiliation(s)
- Debarati Das
- School of Materials Science & Nanotechnology, Jadavpur University, India
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17
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Ippolito NM, Medici F, Pietrelli L, Piga L. Effect of Acid Leaching Pre-Treatment on Gold Extraction from Printed Circuit Boards of Spent Mobile Phones. Materials (Basel) 2021; 14:ma14020362. [PMID: 33450981 PMCID: PMC7828416 DOI: 10.3390/ma14020362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 11/16/2022]
Abstract
The effect of a preliminary acid leaching for the recovery of gold by thiourea from printed circuit boards (PCBs) of spent mobile phones, was investigated. Preliminary leaching is aimed to recover copper in the leachate that would compete with gold in the successive leaching of the residue with thiourea, thus preventing the formation of the gold-thiourea complex. Two hydrometallurgical routes were tested for the recovery of copper first, and gold after. The first one was based on a two-step leaching that utilizes sulfuric acid and hydrogen peroxide in the preliminary leaching and then thiourea for the recovery of gold in the successive leaching: A copper and gold recovery of 81% and 79% were obtained, respectively. In the second route, nitric acid was used: 100% of copper was recovered in the leachate and 85% of gold in the thiourea successive leaching. The main operative parameters, namely thiourea and ferric sulphate concentrations, leach time, liquid-solid ratio, and temperature were studied according to a factorial plan strategy. A flowsheet of the processes was proposed, and a mass balance of both routes was obtained. Finally, qualitative considerations on the technical and economic feasibility of the different routes were made.
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Affiliation(s)
- Nicolò Maria Ippolito
- Department of Industrial and Information Engineering and Economics, University of L’Aquila, Via Giovanni Gronchi 18, Zona industrial Pile, 67100 L’Aquila, Italy;
| | - Franco Medici
- Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy;
- Correspondence:
| | - Loris Pietrelli
- Department of Chemistry, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy;
| | - Luigi Piga
- Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy;
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18
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Liu C, Sun S, Zhu X, Tu G. Metals smelting-collection method for recycling of platinum group metals from waste catalysts: A mini review. Waste Manag Res 2021; 39:43-52. [PMID: 33198602 DOI: 10.1177/0734242x20969795] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Platinum group metals (PGMs) are widely applied in the field of catalysts due to their excellent catalyst activity and high-temperature stability. The rapid generation of the waste catalyst has become the significant characteristic of PGMs with the accelerating consumption of limited PGMs nature resources. It is necessary to recover/recycle PGMs from a waste catalyst for both economic and environmental benefits. This paper reviews the PGMs recovery from waste catalysts using a metals smelting-collection process, which belongs to the main pyrometallurgical process, in the presence of various metal collectors, such as lead, copper, iron, matte, print circuit board (PCB) or reactive metals of calcium and magnesium. The current status of recovery of PGMs from waste catalysts through the addition of various metals as the collector is discussed and existing advantages and challenges are highlighted in this paper. Meanwhile, in the view of the promising processes of PGMs recovery, the influencing factors such as the economic, environmentally friendly, sustainable recycling, commercial scale, and low-grade materials are considered.
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Affiliation(s)
- Chuan Liu
- School of Metallurgy, Northeastern University, China
| | - Shuchen Sun
- School of Metallurgy, Northeastern University, China
| | - Xiaoping Zhu
- School of Metallurgy, Northeastern University, China
- School of Sciences, Northeastern University, China
| | - Ganfeng Tu
- School of Metallurgy, Northeastern University, China
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19
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Zhang J, Lu S, Xiang Y, Jiang SP. Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review. ChemSusChem 2020; 13:2484-2502. [PMID: 32068972 DOI: 10.1002/cssc.202000048] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/18/2020] [Indexed: 06/10/2023]
Abstract
Electrocatalyst supports, in particular carbonaceous materials, play critical roles in the electrocatalytic activity and stability of precious metal group (PMG)-based catalysts such as Pt, Pd, and Au for the electrochemical alcohol oxidation reaction (AOR) of fuels such as methanol and ethanol in polymer electrolyte membrane fuel cells (PEMFCs). Carbonaceous supports such as high surface area carbon provide electronic contact throughout the catalyst layer, isolate PMG nanoparticles (NPs) to maintain high electrochemical surface area, and provide hydrophobic properties to avoid flooding of the catalyst layer by liquid water produced. Compared to high surface area carbon, PMG catalysts supported on 1D and 2D carbon materials such as graphene and carbon nanotubes show enhanced activity and durability due to the intrinsic effect of the underlying carbonaceous supports on the electronic states of PMG NPs. The modification of the electronic environment, in particular the d-band centers of PMG NPs, weakens the adsorption of AOR intermediates, facilitates breaking of the C-C bonds, and thus enhances the electrocatalytic activity of PMG catalysts. The doping of heteroatoms further facilitates the electrocatalytic activity for the AOR through the structural, bifunctional, and electronic effects, in addition to the enhanced dispersion of PMG NPs in the carbon support. The prospects for the development of effective PMG-based catalysts for high-performance alcohol-fuel-based PEMFCs is discussed.
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Affiliation(s)
- Jin Zhang
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices & School of Space and Environment, Beihang University, Beijing, 100191, P. R. China
| | - Shanfu Lu
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices & School of Space and Environment, Beihang University, Beijing, 100191, P. R. China
| | - Yan Xiang
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices & School of Space and Environment, Beihang University, Beijing, 100191, P. R. China
| | - San Ping Jiang
- Fuels and Energy Technology Institute and WA School of Mines: Minerals, Energy & Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
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20
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Komenami T, Yoshimura A, Matsuno Y, Sato M, Sato C. Network of Palladium-Based Nanorings Synthesized by Liquid-Phase Reduction Using DMSO-H2O: In Situ Monitoring of Structure Formation and Drying Deformation by ASEM. Int J Mol Sci 2020; 21:ijms21093271. [PMID: 32380757 PMCID: PMC7247573 DOI: 10.3390/ijms21093271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 01/01/2023] Open
Abstract
We developed a liquid-phase synthesis method for Pd-based nanostructure, in which Pd dissolved in dimethyl sulfoxide (DMSO) solutions was precipitated using acid aqueous solution. In the development of the method, in situ monitoring using atmospheric scanning electron microscopy (ASEM) revealed that three-dimensional (3D) Pd-based nanonetworks were deformed to micrometer-size particles possibly by the surface tension of the solutions during the drying process. To avoid surface tension, critical point drying was employed to dry the Pd-based precipitates. By combining ASEM monitoring with critical point drying, the synthesis parameters were optimized, resulting in the formation of lacelike delicate nanonetworks using citric acid aqueous solutions. Precipitation using HCl acid aqueous solutions allowed formation of 500-nm diameter nanorings connected by nanowires. The 3D nanostructure formation was controllable and modifiable into various shapes using different concentrations of the Pd and Cl ions as the parameters.
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Affiliation(s)
- Takuki Komenami
- Graduate School of Science and Engineering, Chiba University, Chiba 263-8522, Japan; (T.K.); (A.Y.)
| | - Akihiro Yoshimura
- Graduate School of Science and Engineering, Chiba University, Chiba 263-8522, Japan; (T.K.); (A.Y.)
| | - Yasunari Matsuno
- Graduate School of Science and Engineering, Chiba University, Chiba 263-8522, Japan; (T.K.); (A.Y.)
- Correspondence: (Y.M.); (C.S.); Tel.: +81-43-290-3467 (Y.M.); +81- 29-861-5562 (C.S.)
| | - Mari Sato
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, Japan;
| | - Chikara Sato
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, Japan;
- Correspondence: (Y.M.); (C.S.); Tel.: +81-43-290-3467 (Y.M.); +81- 29-861-5562 (C.S.)
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21
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Cyganowski P, Dzimitrowicz A. A Mini-Review on Anion Exchange and Chelating Polymers for Applications in Hydrometallurgy, Environmental Protection, and Biomedicine. Polymers (Basel) 2020; 12:E784. [PMID: 32252240 PMCID: PMC7240740 DOI: 10.3390/polym12040784] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 12/03/2022] Open
Abstract
The rapidly increasing demand for technologies aiming to resolve challenges of separations and environmental protection causes a sharp increase in the demand for ion exchange (IX) and chelating polymers. These unique materials can offer target-selective adsorption properties vital for the removal or recovery of harmful and precious materials, where trace concentrations thereof make other techniques insufficient. Hence, recent achievements in syntheses of IX and chelating resins designed and developed in our research group are discussed within this mini-review. The aim of the present work is to reveal that, due to the diversified and unique physiochemical characteristics of the proposed materials, they are not limited to traditional separation techniques and could be used in multifunctional areas of applications, including catalysis, heat management, and biomedicine.
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Affiliation(s)
- Piotr Cyganowski
- Wroclaw University of Science and Technology, Department of Process Engineering and Technology of Polymer and Carbon Materials, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Anna Dzimitrowicz
- Wroclaw University of Science and Technology, Department of Analytical Chemistry and Chemical Metallurgy, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland;
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Abstract
Global electronic waste management is emerging as a critical issue, especially in developing countries. Collective societal effort and scientific innovation are required along with interdisciplinary approaches to the development of sustainable technologies for recycling precious metals. Bioprospecting of electronic waste is a promising approach to provide economic, environmental, and public health benefits.
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Affiliation(s)
- Abhishek Kumar Awasthi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Jinhui Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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23
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Sahan M, Kucuker MA, Demirel B, Kuchta K, Hursthouse A. Determination of Metal Content of Waste Mobile Phones and Estimation of Their Recovery Potential in Turkey. Int J Environ Res Public Health 2019; 16:ijerph16050887. [PMID: 30862075 PMCID: PMC6427248 DOI: 10.3390/ijerph16050887] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/23/2019] [Accepted: 02/27/2019] [Indexed: 01/07/2023]
Abstract
Waste mobile phones constitute one of the fastest growing Waste Electrical and Electronic Equipment (WEEE) types all over the world due to technological innovations and shortening of their life span. They contain a complex mix of various materials, such as basic metals, precious metals and rare earth elements and represent an important secondary raw metal source. The main objectives of this study were to characterize the metal concentration of waste mobile phones by optimizing the inductively coupled plasma optical emission spectrometer (ICP-OES) operation parameters and estimate the metal recovery potential of waste mobile phones in Turkey. Therefore, selected mobile phone samples collected from a recycling center in Turkey were analyzed to determine their metal concentrations. Then, the theoretical recovery potentials of precious and rare earth metals from waste mobile phones were estimated for Turkey. The analytical methods optimized in this study can help further research activities to obtain comprehensive data for determination of the critical metals (precious metals and rare earth elements) in WEEE samples so that proper recycling and recovery strategies can be selected and implemented.
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Affiliation(s)
- Merve Sahan
- Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul 3432, Turkey.
| | - Mehmet Ali Kucuker
- Institute of Environmental Technology and Energy Economics, Waste Resources Management, TUHH-Hamburg University of Technology, Harburger Schloßstr. 36, 21079 Hamburg, Germany.
- Department of Environmental Engineering, Engineering Faculty, Terzioğlu Campus, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey.
| | - Burak Demirel
- Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul 3432, Turkey.
| | - Kerstin Kuchta
- Institute of Environmental Technology and Energy Economics, Waste Resources Management, TUHH-Hamburg University of Technology, Harburger Schloßstr. 36, 21079 Hamburg, Germany.
| | - Andrew Hursthouse
- Computing Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK.
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24
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Gilroy KD, Yang X, Xie S, Zhao M, Qin D, Xia Y. Shape-Controlled Synthesis of Colloidal Metal Nanocrystals by Replicating the Surface Atomic Structure on the Seed. Adv Mater 2018; 30:e1706312. [PMID: 29656471 DOI: 10.1002/adma.201706312] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/05/2017] [Indexed: 05/25/2023]
Abstract
Controlling the surface structure of metal nanocrystals while maximizing the utilization efficiency of the atoms is a subject of great importance. An emerging strategy that has captured the attention of many research groups involves the conformal deposition of one metal as an ultrathin shell (typically 1-6 atomic layers) onto the surface of a seed made of another metal and covered by a set of well-defined facets. This approach forces the deposited metal to faithfully replicate the surface atomic structure of the seed while at the same time serving to minimize the usage of the deposited metal. Here, the recent progress in this area is discussed and analyzed by focusing on the synthetic and mechanistic requisites necessary for achieving surface atomic replication of precious metals. Other related methods are discussed, including the one-pot synthesis, electrochemical deposition, and skin-layer formation through thermal annealing. To close, some of the synergies that arise when the thickness of the deposited shell is decreased controllably down to a few atomic layers are highlighted, along with how the control of thickness can be used to uncover the optimal physicochemical properties necessary for boosting the performance toward a range of catalytic reactions.
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Affiliation(s)
- Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Xuan Yang
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Shuifen Xie
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Ming Zhao
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Dong Qin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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