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Kong D, Wu J, Yan X, Zhang H, Iqbal A, Ivanets A, Romanovski V, Zhang L, Su X. Electroplating sludge derived CuFe 2O 4/MgFe 2O 4 metal oxide composites for highly efficient removal of Congo red. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:58109-58118. [PMID: 39312114 DOI: 10.1007/s11356-024-34974-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 09/09/2024] [Indexed: 10/11/2024]
Abstract
The utilization of electroplating sludge (ES) to derive metal oxide functional materials is a key strategy, as it enables the recycling of valuable elements, mitigates environmental risks, and aligns with green, low-carbon development strategies. Nevertheless, the development of metal oxide composite functional materials with distinctive structures and properties derived from ES continues to present several challenges. Herein, we synthesized CuFe2O4/MgFe2O4 metal oxide composites from ES by one-step hydrothermal method. As-obtained CuFe2O4/MgFe2O4 metal oxide composites (MMOs) have a unique layered structure, richer mesoporous and microporous structures, activity sites. When evaluated as an adsorbent for Congo red (CR), as-synthesized CuFe2O4/MgFe2O4 with layered structure composite exhibited excellent adsorption capacity (1039.1 mg/g) and reusability (85.55% after five cycles), which was superior to most similar adsorbents reported till date. Such improvement is explored to mainly originate from two respects: the physical adsorption facilitated by the abundant pores formed through the stacking and growth of CuFe2O4 and MgFe2O4, and the chemisorption resulting from surface complexation and hydrogen bonding between the MMOs and CR. This strategy to directly transform ES into functional materials shows great promise both in waste management and preparation of robust adsorbents for wastewater treatment.
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Affiliation(s)
- Dehui Kong
- School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
- Key Laboratory of Clean Conversion and High Value Utilization of Biomass Resources in Xinjiang, School of Chemistry and Chemical Engineering, Yili Normal University, Yining, 835000, China
- China-Singapore International Joint Research Institute (CSIJRI), Guangzhou, 510006, China
| | - Jinxiong Wu
- Key Laboratory of Clean Conversion and High Value Utilization of Biomass Resources in Xinjiang, School of Chemistry and Chemical Engineering, Yili Normal University, Yining, 835000, China
| | - Xiuling Yan
- Key Laboratory of Clean Conversion and High Value Utilization of Biomass Resources in Xinjiang, School of Chemistry and Chemical Engineering, Yili Normal University, Yining, 835000, China
| | - Heng Zhang
- School of Material Science and Engineering, Institute of Materials Science and Devices, Suzhou University of Science and Technology, Suzhou, 215009, People's Republic of China
| | - Azhar Iqbal
- Department of Chemistry, Bacha Khan University, Charsadda, Pakistan
| | - Andrei Ivanets
- Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus, Surganova St., 9/1, 220072, Minsk, Belarus
| | - Valentin Romanovski
- Science and Research Centre of Functional Nano-Ceramics, National University of Science and Technology "MISIS", Lenin Av., 4, Moscow, 119049, Russia
| | - Lijuan Zhang
- School of Environment, South China Normal University, University Town, Guangzhou, 510006, China.
| | - Xintai Su
- China-Singapore International Joint Research Institute (CSIJRI), Guangzhou, 510006, China
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Liu L, Ruan X, Liu H, Fan X, Dong J. Dechlorination of 2,4-dichlorophenol by Fe/Ni nanoparticles: the pathway and the effect of pH and the Ni mass ratio. ENVIRONMENTAL TECHNOLOGY 2023; 44:3676-3684. [PMID: 35442165 DOI: 10.1080/09593330.2022.2068383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
ABSTRACTThe dechlorination of 2,4-dichlorophenol (2,4-DCP) by a nanoscale Fe/Ni material was investigated at room temperature. 2,4-DCP can be removed more quickly by an Fe/Ni material with 2% Ni. Fe/Ni exhibited excellent adsorption and reduction efficiency toward 2,4-DCP in an aqueous solution over a wide range of pH values. The removal rate of 2,4-DCP exceeded 95% in 60 min in the pH range of 3.0-9.0, and more than 75% was dechlorinated to phenol (CA). The degradation pathway of 2,4-DCP was confirmed based on analysis of the intermediate and end products. A portion of 2,4-DCP was first dechlorinated with a chlorine atom to produce 2-chlorophenol and 4-chlorophenol, and then dechlorination was performed sequentially to form CA. The other portion of 2,4-DCP was dechlorinated to remove two chlorine atoms simultaneously to generate CA. The investigations are essential to the application of iron-based remediation technology.
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Affiliation(s)
- Lujian Liu
- Department of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan, People's Republic of China
- Junji Environmental Technology Co., Ltd., Wuhan, People's Republic of China
| | - Xia Ruan
- Department of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan, People's Republic of China
- Junji Environmental Technology Co., Ltd., Wuhan, People's Republic of China
| | - Hong Liu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Xianyuan Fan
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Jun Dong
- Department of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan, People's Republic of China
- Junji Environmental Technology Co., Ltd., Wuhan, People's Republic of China
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Lahiri N, Song D, Zhang X, Huang X, Stoerzinger KA, Carvalho OQ, Adiga PP, Blum M, Rosso KM. Interplay between Facets and Defects during the Dissociative and Molecular Adsorption of Water on Metal Oxide Surfaces. J Am Chem Soc 2023; 145:2930-2940. [PMID: 36696237 DOI: 10.1021/jacs.2c11291] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Surface terminations and defects play a central role in determining how water interacts with metal oxides, thereby setting important properties of the interface that govern reactivity such as the type and distribution of hydroxyl groups. However, the interconnections between facets and defects remain poorly understood. This limits the usefulness of conventional notions such as that hydroxylation is controlled by metal cation exposure at the surface. Here, using hematite (α-Fe2O3) as a model system, we show how oxygen vacancies overwhelm surface cation-dependent hydroxylation behavior. Synchrotron-based ambient-pressure X-ray photoelectron spectroscopy was used to monitor the adsorption of molecular water and its dissociation to form hydroxyl groups in situ on (001), (012), or (104) facet-engineered hematite nanoparticles. Supported by density functional theory calculations of the respective surface energies and oxygen vacancy formation energies, the findings show how oxygen vacancies are more prone to form on higher energy facets and induce surface hydroxylation at extremely low relative humidity values of 5 × 10-5%. When these vacancies are eliminated, the extent of surface hydroxylation across the facets is as expected from the areal density of exposed iron cations at the surface. These findings help answer fundamental questions about the nature of reducible metal oxide-water interfaces in natural and technological settings and lay the groundwork for rational design of improved oxide-based catalysts.
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Affiliation(s)
- Nabajit Lahiri
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Duo Song
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Xiaopeng Huang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Kelsey A Stoerzinger
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States.,Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - O Quinn Carvalho
- Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - Prajwal P Adiga
- Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - Monika Blum
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California94720, United States
| | - Kevin M Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
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Bai S, Mou Y, Wan J, Wang Y, Li W, Zhang H, Luo P, Wang Y. Unique amorphous/crystalline heterophase coupling for an efficient oxygen evolution reaction. NANOSCALE 2022; 14:18123-18132. [PMID: 36449014 DOI: 10.1039/d2nr05167b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Designing amorphous/crystalline heterophase catalysts is still in the initial stage, and the study of amorphous/crystalline heterophase and carbon-free catalysts has not yet been realized. Herein, we report a unique amorphous/crystalline heterophase catalyst consisting of NiFe alloy nanoparticles (NPs) supported on Ti4O7 (NiFe/Ti4O7) for the first time, which is achieved by a heterophase supporting strategy of dual heat treatment. Surprisingly, the amorphous/crystalline heterophase is flexibly composed of amorphous and crystalline phases of alloy NPs and Ti4O7. The heterophase coupling endows the catalyst with a low overpotential (256 mV at 10 mA cm-2), a small Tafel slope (47 mV dec-1) and excellent endurance stability (over 100 h) in 1 M KOH electrolyte, which already outperforms commercial RuO2 (338 mV and 113 mV dec-1) and exceeds most reported representative carbon-based and titanium-based non-precious metal catalysts. The density functional theory (DFT) calculations and experimental results reveal that the unique amorphous/crystalline heterophase coupling in NiFe/Ti4O7 results in electron transfer between the alloy NPs and Ti4O7, allowing more catalytically active sites and faster interfacial electron transfer dynamics. This work provides insights into the synthesis of amorphous/crystalline heterophase catalysts and can be generalized to the heterophase coupling of other transition metal-based electrocatalysts.
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Affiliation(s)
- Sitian Bai
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Yiwei Mou
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Jin Wan
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Yanwei Wang
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Weibo Li
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Huijuan Zhang
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Ping Luo
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
| | - Yu Wang
- The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China.
- The School of Electrical Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China
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Xie W, Deng W, Hu J, Li D, Gai Y, Li X, Zhang J, Long D, Jiang F. Construction of Ferrocene-based bimetallic CoFe-FcDA nanosheets for efficient oxygen evolution reaction. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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