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Zhu B, Guo C, Li N, Liu P, Zhang M, Wang L, Xu Z. From Sheep Track to Motorway: Supramolecular-Mediated 2D Nanofluidic Channels for Ultrafast Water Transport. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309253. [PMID: 38126674 DOI: 10.1002/smll.202309253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Atomic thick 2D materials hold great potential as building blocks to construct highly permeable membranes, yet the permeability of laminar 2D material membranes is still limited by their irregularity sheep track-like interlayer channels. Herein, a supramolecular-mediated strategy to induce the regular assembly of high-throughput 2D nanofluidic channels based on host-guest interactions is proposed. Inspired by the characteristics of motorways, supramolecular-mediated ultrathin 2D membranes with broad and continuous regular water transport channels are successfully constructed using graphene oxide (GO) as an example. The prepared membrane achieves an ultrahigh water permeability (369.94 LMH bar-1) more than six times higher than that of the original membranes while maintaining dye rejection above 98.5%, which outperforms the reported 2D membranes. Characterization and simulation results show that the introduction of hyaluronate-grafted β-cyclodextrin not only expands the interlayer channels of GO membranes but also enables the membranes to operate stably under harsh conditions with the help of host-guest interactions. This universal supramolecular assembly strategy provides new opportunities for the preparation of 2D membranes with high separation performance and reliable and stable nanofluidic channels.
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Affiliation(s)
- Bo Zhu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Changsheng Guo
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, 529020, China
| | - Nan Li
- Tiangong University, Tianjin, 300387, China
| | - Pengbi Liu
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, 529020, China
| | - Mengchen Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Lijing Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhiwei Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
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2
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Zhang X, Zhang Y, Yu B, Tan F, Fei X, Cheng G, Zhang Z. Dealloying-Derived Self-Supporting Nanoporous Zinc Film with Optimized Macro/Microstructure for High-Performance Solar Steam Generation. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38659200 DOI: 10.1021/acsami.4c00707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Solar steam generation (SSG) is a promising technology for the production of freshwater that can help alleviate global water scarcity. Nanostructured metals, known for their localized surface plasmon resonance effect, have generated significant interest, but low-cost metal films with excellent water evaporation properties are challenging. In this work, we present a one-step dealloying route for fabricating self-supporting black nanoporous zinc (NP-Zn) films with a bicontinuous ligament/channel structure, using Al-Zn solid solution alloys as the precursors. The influence of alloy composition on the formation and macro/microstructure of NP-Zn was investigated, and an optimal Al98Zn2 was selected. Additionally, in situ and ex situ characterizations were conducted to unveil the dealloying mechanism of Al98Zn2 and phase/microstructure evolution of NP-Zn during dealloying, including the phase transition of Al(Zn) → Zn, significant volume shrinkage (89.8%), and the development of high porosity (81.3%). The nanoscale ligament/channel structure and high porosity endow the NP-Zn films with good broadband absorption and superior hydrophilicity and, more importantly, give them excellent SSG performance. The NP-Zn2 film displays high evaporation efficiency, superior stability, and good seawater desalination performance. The efficient SSG performance, material abundance, and low cost suggest that NP-Zn films have promising applications in metal-based photothermal materials for SSG.
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Affiliation(s)
- Xueying Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Ying Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Bin Yu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Fuquan Tan
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Xiangyu Fei
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Guanhua Cheng
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
| | - Zhonghua Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, P.R. China
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Li B, Xu X, Yang Z, Lu J, Han J. Recent Advances in Layered-Double-Hydroxide-Based Separation Membranes. Chempluschem 2024; 89:e202300521. [PMID: 37897329 DOI: 10.1002/cplu.202300521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/20/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
The use of two-dimensional materials shows great promise for the development of next-generation membrane materials, thanks to their atomic thinness and the ease with which precise nanochannels can be constructed. Among these materials, layered double hydroxides (LDHs) stand out as an important class, possessing many features that make them ideal for constructing high-performance membranes. LDHs offer many advantages, such as their abundant and tunable interlayer anions, which enable the preparation of membranes with adjustable sub-nanometer pore sizes. Additionally, their hydrophilicity and positive charge characteristics afford them unique benefits. LDHs have been found to be effective in gas separation, ion sieving, and nanofiltration. This review provides a summary of the latest progress in using LDHs for membrane separation. It begins by introducing the basic properties of LDHs, followed by the assembly strategy for LDH membranes. Furthermore, the review presents the research status of LDHs membranes in various fields in a systematic manner. Lastly, the paper highlights some challenges and future prospects for preparing and applying LDHs membranes.
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Affiliation(s)
- Biao Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Xiaozhi Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Zeya Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Jun Lu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Jingbin Han
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
- Quzhou Institute for Innovation in Resource Chemical Engineering, 324000, Quzhou, China
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Ran W, Zhao H, Zhang X, Li S, Sun JF, Liu J, Liu R, Jiang G. Critical Review of Pd-Catalyzed Reduction Process for Treatment of Waterborne Pollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 38323894 DOI: 10.1021/acs.est.3c09198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Catalyzed reduction processes have been recognized as important and supplementary technologies for water treatment, with the specific aims of resource recovery, enhancement of bio/chemical-treatability of persistent organic pollutants, and safe handling of oxygenate ions. Palladium (Pd) has been widely used as a catalyst/electrocatalyst in these reduction processes. However, due to the limited reserves and high cost of Pd, it is essential to gain a better understanding of the Pd-catalyzed decontamination process to design affordable and sustainable Pd catalysts. This review provides a systematic summary of recent advances in understanding Pd-catalyzed reductive decontamination processes and designing Pd-based nanocatalysts for the reductive treatment of water-borne pollutants, with special focus on the interactions and transformation mechanisms of pollutant molecules on Pd catalysts at the atomic scale. The discussion begins by examining the adsorption of pollutants onto Pd sites from a thermodynamic viewpoint. This is followed by an explanation of the molecular-level reaction mechanism, demonstrating how electron-donors participate in the reductive transformation of pollutants. Next, the influence of the Pd reactive site structure on catalytic performance is explored. Additionally, the process of Pd-catalyzed reduction in facilitating the oxidation of pollutants is briefly discussed. The longevity of Pd catalysts, a crucial factor in determining their practicality, is also examined. Finally, we argue for increased attention to mechanism study, as well as precise construction of Pd sites under batch synthesis conditions, and the use of Pd-based catalysts/electrocatalysts in the treatment of concentrated pollutants to facilitate resource recovery.
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Affiliation(s)
- Wei Ran
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoling Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiwei Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie-Fang Sun
- Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Jingfu Liu
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Wang H, Yang J, Zhang H, Zhao J, Liu H, Wang J, Li G, Liang H. Membrane-based technology in water and resources recovery from the perspective of water social circulation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168277. [PMID: 37939956 DOI: 10.1016/j.scitotenv.2023.168277] [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: 08/31/2023] [Revised: 10/18/2023] [Accepted: 10/31/2023] [Indexed: 11/10/2023]
Abstract
In this review, the application of membrane-based technology in water social circulation was summarized. Water social circulation encompassed the entire process from the acquirement to discharge of water from natural environment for human living and development. The focus of this review was primarily on the membrane-based technology in recovery of water and other valuable resources such as mineral ions, nitrogen and phosphorus. The main text was divided into four main sections according to water flow in the social circulation: drinking water treatment, agricultural utilization, industrial waste recycling, and urban wastewater reuse. In drinking water treatment, the acquirement of water resources was of the most importance. Pressure-driven membranes, such as ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) were considered suitable in natural surface water treatment. Additionally, electrodialysis (ED) and membrane capacitive deionization (MCDI) were also effective in brackish water desalination. Agriculture required abundant water with relative low quality for irrigation. Therefore, the recovery of water from other stages of the social circulation has become a reasonable solution. Membrane bioreactor (MBR) was a typical technique attributed to low-toxicity effluent. In industrial waste reuse, the osmosis membranes (FO and PRO) were utilized due to the complex physical and chemical properties of industrial wastewater. Especially, membrane distillation (MD) might be promising when the wastewater was preheated. Resources recovery in urban wastewater was mainly divided into recovery of bioenergy (via anaerobic membrane bioreactors, AnMBR), nitrogen (utilizing MD and gas-permeable membrane), and phosphorus (through MBR with chemical precipitation). Furthermore, hybrid/integrated systems with membranes as the core component enhanced their performance and long-term working ability in utilization. Generally, concentrate management and energy consumption control might be the key areas for future advancements of membrane-based technology.
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Affiliation(s)
- Hesong Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jiaxuan Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Han Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jing Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Hongzhi Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jinlong Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Guibai Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
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Tian H, Cui K, Chen X, Liu J, Zhang Q. Size-matched hierarchical porous carbon materials anchoring single-atom Fe-N 4 sites for PMS activation: An in-depth study of key active species and catalytic mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132647. [PMID: 37788555 DOI: 10.1016/j.jhazmat.2023.132647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023]
Abstract
Single-atom catalysts are considered to be one of the most promising catalysts for AOPs. However, how to design and synthesize cost-effective and highly loaded single-atom catalysts is the bottleneck limiting its development and application. In this study, we report a highly loaded single-atom iron catalyst (Fe-SAC-BC) using waste biomass as a carbon carrier to anchor Fe-N4 sites. The catalyst showed excellent catalytic performance and stability in wastewater treatment. Unlike conventional radical oxidation, the non-radical degradation process of Fe-N4 as the active site and high-valent iron-oxygen intermediates as the key active species identified by burst and probe experiments. DFT calculations and molecular dynamics simulations were applied to the catalytic mechanism of Fe-SAC-BC, in which Fe (III)-N4 is the most likely active site and Fe (IV)-OH is the most dominant active species. This study provides new strategies and understanding for the design of novel single-atom catalysts and the mechanistic probing of the non-radical pathways of AOPs.
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Affiliation(s)
- Haoran Tian
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Kangping Cui
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China.
| | - Xing Chen
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Key Lab of Aerospace Structural Parts Forming Technology and Equipment of Anhui Province, Institute of Industry and Equipment Technology, Hefei University of Technology, Hefei 230009, China
| | - Jun Liu
- Anhui Zhonghuan Environmental Protection Technology Co., Ltd, Hefei 230000, China
| | - Qiang Zhang
- Anhui Environmental Science and Technology Group Co. Ltd, Hefei 230088, China
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7
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Cheng X, Li T, Yan L, Jiao Y, Zhang Y, Wang K, Cheng Z, Ma J, Shao L. Biodegradable electrospinning superhydrophilic nanofiber membranes for ultrafast oil-water separation. SCIENCE ADVANCES 2023; 9:eadh8195. [PMID: 37611103 PMCID: PMC10446487 DOI: 10.1126/sciadv.adh8195] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/21/2023] [Indexed: 08/25/2023]
Abstract
Although membrane technology has attracted considerable attention for oily wastewater treatment, the plastic waste generated from discarded membranes presents an immediate challenge for achieving eco-friendly separation. We designed on-demand biodegradable superhydrophilic membranes composed of polylactic acid nanofibers in conjunction with polyethylene oxide hydrogels using electrospinning technology for ultrafast purification of oily water. Our results showed that the use of the polyethylene oxide hydrogels increased the number of hydrogen bonds formed between the membrane surface and water molecules by 357.6%. This converted hydrophobic membranes into superhydrophilic ones, which prevented membrane fouling and accelerated emulsion penetration through the membranes. The oil-in-water emulsion permeance of our newly designed nanofiber membranes increased by 61.9 times (2.1 × 104 liters per square meter per hour per bar) with separation efficiency >99.6%, which was superior to state-of-the-art membranes. Moreover, the formation of hydrogen bonds was found to accelerate polylactic acid biodegradation into lactic acid by over 30%, offering a promising approach for waste membrane treatment.
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Affiliation(s)
- Xiquan Cheng
- State Key Laboratory of Urban Water Resource and Environment, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P.R. China
- Shandong Sino-European Membrane Technology Research Institute Co. Ltd., Weihai Key Laboratory of Water Treatment and Membrane Technology, Weihai 264209, P.R. China
| | - Tongyu Li
- State Key Laboratory of Urban Water Resource and Environment, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P.R. China
| | - Linlin Yan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150001, P.R. China
| | - Yang Jiao
- State Key Laboratory of Urban Water Resource and Environment, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P.R. China
| | - Yingjie Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P.R. China
- Shandong Sino-European Membrane Technology Research Institute Co. Ltd., Weihai Key Laboratory of Water Treatment and Membrane Technology, Weihai 264209, P.R. China
| | - Kai Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P.R. China
| | - Zhongjun Cheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150001, P.R. China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lu Shao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150001, P.R. China
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8
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Liu T, Xiao S, Li N, Chen J, Zhou X, Qian Y, Huang CH, Zhang Y. Water decontamination via nonradical process by nanoconfined Fenton-like catalysts. Nat Commun 2023; 14:2881. [PMID: 37208339 DOI: 10.1038/s41467-023-38677-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 05/09/2023] [Indexed: 05/21/2023] Open
Abstract
There is an urgent need to develop effective and sustainable solutions to reduce water pollution. Heterogeneous Fenton-like catalysts are frequently used to eliminate contaminants from water. However, the applicability of these catalysts is limited due to low availability of the reactive species (RS). Herein, nanoconfinement strategy was applied to encapsulate short-lived RS at nanoscale to boost the utilization efficiency of the RS in Fenton-like reactions. The nanoconfined catalyst was fabricated by assembling Co3O4 nanoparticles in carbon nanotube nanochannels to achieve exceptional reaction rate and excellent selectivity. Experiments collectively suggested that the degradation of contaminants was attributed to singlet oxygen (1O2). Density functional theory calculations demonstrated the nanoconfined space contributes to quantum mutation and alters the transition state to lower activation energy barriers. Simulation results revealed that the enrichment of contaminant on the catalyst reduced the migration distance and enhanced the utilization of 1O2. The synergy between the shell layer and core-shell structure further improved the selectivity of 1O2 towards contaminant oxidation in real waters. The nanoconfined catalyst is expected to provide a viable strategy for water pollution control.
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Affiliation(s)
- Tongcai Liu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Shaoze Xiao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Nan Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Jiabin Chen
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China.
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Yajie Qian
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China.
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Abebe B, Tsegaye D, Sori C, Renuka Prasad RC, Murthy HCA. Cu/CuO-Doped ZnO Nanocomposites via Solution Combustion Synthesis for Catalytic 4-Nitrophenol Reduction. ACS OMEGA 2023; 8:9597-9606. [PMID: 36936329 PMCID: PMC10018707 DOI: 10.1021/acsomega.3c00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The synthesis of optoelectrically enhanced nanomaterials should be continuously improved by employing time- and energy-saving techniques. The porous zinc oxide (ZnO) and copper-doped ZnO nanocomposites (NCs) were synthesized by the time- and energy-efficient solution combustion synthesis (SCS) approach. In this SCS approach, once the precursor-surfactant complex ignition point is reached, the reaction starts and ends within a short time without the need for any external energy. The TGA-DTA analysis confirmed that 500 °C was the point at which stable metal oxide was obtained. The doping and heterojunction strategy improved the optoelectric properties of the NCs more than the individual constituents, which then enhanced the materials' charge transfer and optical absorption capabilities. The porosity, nanoscale crystallite size (15-50 nm), and formation of Cu/CuO-ZnO NCs materials were confirmed from the XRD, SEM, and TEM/HRTEM analyses. The obtained d-spacing values of 0.275 and 0.234 nm confirm the formation of ZnO and CuO crystals, respectively. The decrease in photoluminescence intensity for the doped NCs corroborates a reduction in electron-hole recombination. On the Mott-Schottky analysis, the positive slope for ZnO confirms the n-type character, while the negative and positive slopes of the NCs confirm the p- and n-type characters, respectively. A diffusion-controlled type of charge transfer process on the electrode surface was confirmed from the cyclic voltammetric analysis. Thus, the overall analysis shows the applicability of the less expensive and more efficient SCS for several applications, such as catalysis and sensors. To confirm this, an organic catalytic reduction reaction of 4-nitrophenol to 4-aminophenol was tested. Within three and a half minutes, the catalytic reduction result showed the great potential of NCs over ZnO NPs. Thus, the energy- and time-saving SCS approach has a great future outlook as an industrial pollutant catalytic reduction application.
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Affiliation(s)
- Buzuayehu Abebe
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 1888, Ethiopia
| | - Dereje Tsegaye
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 1888, Ethiopia
| | - Chaluma Sori
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 1888, Ethiopia
| | | | - H. C. Ananda Murthy
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 1888, Ethiopia
- Department
of Prosthodontics, Saveetha Dental College & Hospital, Saveetha
Institute of Medical and Technical Science (SIMATS), Saveetha University, Chennai 600077, Tamil Nadu, India
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10
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Wu J, Tao Y, Zhang C, Zhu Q, Zhang D, Li G. Activation of chloride by oxygen vacancies-enriched TiO 2 photoanode for efficient photoelectrochemical treatment of persistent organic pollutants and simultaneous H 2 generation. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130363. [PMID: 36444064 DOI: 10.1016/j.jhazmat.2022.130363] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 05/27/2023]
Abstract
Photoelectrochemical (PEC) activation of chloride ions (Cl-) to degrade persistent organic pollutants (POPs) is a promising strategy for the treatment of industrial saline organic wastewater. However, the wide application of this technology is greatly restricted due to the general photoanode activation of Cl- with poor capability, the propensity to produce toxic by-products chlorates, and the narrow pH range. Herein, oxygen vacancies-enriched titanium dioxide (Ov-TiO2) photoanode is explored to strongly activate Cl- to drive the deep mineralization of POPs wastewater in a wide pH range (2-12) with simultaneous production of H2. More importantly, nearly no toxic by-product of chlorates was produced during such PEC-Cl system. The degradation efficiency of 4-CP and H2 generation rate by Ov-TiO2 were 99.9% within 60 min and 198.2 μmol h-1 cm-2, respectively, which are far superior to that on the TiO2 (33.1% within 60 min, 27.5 μmol h-1 cm-2) working electrode. DFT calculation and capture experiments revealed that Ov-TiO2 with abundant oxygen vacancies is conducive to the activation of Cl- to produce more reactive chlorine species, evidenced by its high production of free chlorine (48.7 mg L-1 vs 7.5 mg L-1 of TiO2). The as-designed PEC-Cl system in this work is expected to realize the purification of industrial saline organic wastewater coupling with green energy H2 evolution.
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Affiliation(s)
- Jiabao Wu
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Ying Tao
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Chi Zhang
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Qiong Zhu
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Dieqing Zhang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, PR China.
| | - Guisheng Li
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, PR China; School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China; School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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11
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Biswas P, Polash SA, Dey D, Kaium MA, Mahmud AR, Yasmin F, Baral SK, Islam MA, Rahaman TI, Abdullah A, Ema TI, Khan DA, Bibi S, Chopra H, Kamel M, Najda A, Fouda MMA, Rehan UM, Mheidat M, Alsaidalani R, Abdel-Daim MM, Hasan MN. Advanced implications of nanotechnology in disease control and environmental perspectives. Biomed Pharmacother 2023; 158:114172. [PMID: 36916399 DOI: 10.1016/j.biopha.2022.114172] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Nanotechnology encompasses a wide range of devices derived from biology, engineering, chemistry, and physics, and this scientific field is composed of great collaboration among researchers from several fields. It has diverse implications notably smart sensing technologies, effective disease diagnosis, and sometimes used in treatment. In medical science, the implications of nanotechnology include the development of elements and devices that interact with the body at subcellular (i.e., molecular) levels exhibiting high sensitivity and specificity. There is a plethora of new chances for medical science and disease treatment to be discovered and exploited in the rapidly developing field of nanotechnology. In different sectors, nanomaterials are used just because of their special characteristics. Their large surface area of them enables higher reactivity with greater efficiency. Furthermore, special surface chemistry is displayed by nanomaterials which compare to conventional materials and facilitate the nanomaterials to decrease pollutants efficiently. Recently, nanomaterials are used in some countries to reduce the levels of contaminants in water, air, and soil. Moreover, nanomaterials are used in the cosmetics and medical industry, and it develops the drug discovery (DD) system. Among a huge number of nanomaterials, Cu, Ag, TiO2, ZnO, Fe3O4, and carbon nanotubes (CNTs) are extensively used in different industries for various purposes. This extensive review study has introduced the major scientific and technical features of nanotechnology, as well as some possible clinical applications and positive feedback in environmental waste management and drug delivery systems.
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Affiliation(s)
- Partha Biswas
- Laboratory of Pharmaceutical Biotechnology and Bioinformatics, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | | | - Dipta Dey
- Department of Biochemistry and Molecular Biology, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj 8100, Bangladesh
| | - Md Abu Kaium
- Laboratory of Pharmaceutical Biotechnology and Bioinformatics, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Aar Rafi Mahmud
- Department of Biochemistry and Molecular Biology, Faculty of Life Science, Mawlana Bhashani Science and Technology University (MBSTU), Tangail 1902, Bangladesh
| | - Farhana Yasmin
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chattogram 4331, Bangladesh
| | - Sumit Kumar Baral
- Microbiology department, Jagannath University, Dhaka 1100, Bangladesh
| | - Md Aminul Islam
- Laboratory of Pharmaceutical Biotechnology and Bioinformatics, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Tanjim Ishraq Rahaman
- Department of Biotechnology and Genetic Engineering, Faculty of Life Science, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Asif Abdullah
- Department of Biomedical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Tanzila Ismail Ema
- North South University, Department of Biochemistry and Microbiology, Dhaka 1229, Bangladesh
| | - Dhrubo Ahmed Khan
- Laboratory of Pharmaceutical Biotechnology and Bioinformatics, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Shabana Bibi
- Department of Bioscience, Shifa Tameer-e-Millat University, Islamabad, Pakistan; Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, China.
| | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Mohamed Kamel
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt; Biology Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia
| | - Agnieszka Najda
- Department of Vegetable and Herbal Crops, University of Life Sciences in Lublin, 50 A Doświadczalna Street, 20-280 Lublin, Poland; Biology Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia
| | - Maged M A Fouda
- Biology Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia
| | - UmmeSalma M Rehan
- Department of Surgery, Medicine Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Mayyadah Mheidat
- Medicine Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Rawidh Alsaidalani
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Mohamed M Abdel-Daim
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia; Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt.
| | - Md Nazmul Hasan
- Laboratory of Pharmaceutical Biotechnology and Bioinformatics, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
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Huo Z, Kim YJ, Chen Y, Song T, Yang Y, Yuan Q, Kim SW. Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient energy. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2023; 17:118. [PMID: 37096021 PMCID: PMC10115484 DOI: 10.1007/s11783-023-1718-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 05/03/2023]
Abstract
The development of self-powered water purification technologies for decentralized applications is crucial for ensuring the provision of drinking water in resource-limited regions. The elimination of the dependence on external energy inputs and the attainment of self-powered status significantly expands the applicability of the treatment system in real-world scenarios. Hybrid energy harvesters, which convert multiple ambient energies simultaneously, show the potential to drive self-powered water purification facilities under fluctuating actual conditions. Here, we propose recent advancements in hybrid energy systems that simultaneously harvest various ambient energies (e.g., photo irradiation, flow kinetic, thermal, and vibration) to drive water purification processes. The mechanisms of various energy harvesters and point-of-use water purification treatments are first outlined. Then we summarize the hybrid energy harvesters that can drive water purification treatment. These hybrid energy harvesters are based on the mechanisms of mechanical and photovoltaic, mechanical and thermal, and thermal and photovoltaic effects. This review provides a comprehensive understanding of the potential for advancing beyond the current state-of-the-art of hybrid energy harvester-driven water treatment processes. Future endeavors should focus on improving catalyst efficiency and developing sustainable hybrid energy harvesters to drive self-powered treatments under unstable conditions (e.g., fluctuating temperatures and humidity).
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Affiliation(s)
- Zhengyang Huo
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872 China
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
| | - Young Jun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
| | - Yuying Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023 China
| | - Tianyang Song
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872 China
| | - Yang Yang
- Institute of Scientific and Technical Information of China, Beijing, 100038 China
| | - Qingbin Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023 China
| | - Sang Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
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Wang Z, Gao J, Zhou J, Gong J, Shang L, Ye H, He F, Peng S, Lin Z, Li Y, Caruso F. Engineering Metal-Phenolic Networks for Solar Desalination with Directional Salt Crystallization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209015. [PMID: 36245327 DOI: 10.1002/adma.202209015] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Solar desalination is one of the most promising strategies to address the global freshwater shortage crisis. However, the residual salt accumulated on the top surface of solar evaporators severely reduces light absorption and steam evaporation efficiency, thus impeding the further industrialization of this technology. Herein, a metal-phenolic network (MPN)-engineered 3D evaporator composed of photothermal superhydrophilic/superhydrophobic sponges and side-twining hydrophilic threads for efficient desalination with directional salt crystallization and zero liquid discharge is reported. The MPN coatings afford the engineering of alternating photothermal superhydrophilic/superhydrophobic sponges with high heating efficiency and defined vapor escape channels, while the side-twining threads induce site-selective salt crystallization. The 3D evaporator exhibits a high and stable indoor desalination rate (≈2.3 kg m-2 h-1 ) of concentrated seawater (20 wt%) under simulated sun irradiation for over 21 days without the need for salt crystallization inhibitors. This direct desalination is also achieved in outdoor field operations with a production rate of clean water up to ≈1.82 kg m-2 h-1 from concentrated seawater (10 wt%). Together with the high affinity and multiple functions of MPNs, this work is expected to facilitate the rational design of solar desalination devices and boost the research translation of MPN materials in broader applications.
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Affiliation(s)
- Zhenxing Wang
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Jie Gao
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Jiajing Zhou
- Department of NanoEngineering, University of California, 9500 Gilman Drive, La Jolla, San Diego, CA, 92093, USA
| | - Jingwen Gong
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Longwen Shang
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Haobin Ye
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Fang He
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Shaoqin Peng
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Zhixing Lin
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Yuexiang Li
- College of Chemistry, Nanchang University, Nanchang, 330031, P. R. China
| | - Frank Caruso
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
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Cai M, Liu Y, Wang C, Lin W, Li S. Novel Cd0.5Zn0.5S/Bi2MoO6 S-scheme heterojunction for boosting the photodegradation of antibiotic enrofloxacin: Degradation pathway, mechanism and toxicity assessment. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122401] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Lu T, Cao W, Liang H, Deng Y, Zhang Y, Zhu M, Ma W, Xiong R, Huang C. Blow-Spun Nanofibrous Membrane for Simultaneous Treatment of Emulsified Oil/Water Mixtures, Dyes, and Bacteria. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15729-15739. [PMID: 36495271 DOI: 10.1021/acs.langmuir.2c02620] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Membrane separation is of great significance due to its unique performance in treating wastewater. However, the simultaneous treatment of oily emulsions and other complex pollutants in water remains challenging. Herein, we have proposed a simple strategy to prepare a multifunctional titanium dioxide/silver nanoparticles/polyacrylonitrile (TiO2/AgNPs/PAN) nanofibrous membrane. The experimental results showed that the combination of the hierarchical structure composed of PAN nanofibers and Ag/TiO2 nanoprotrusions contributed to the superhydrophilicity and superoleophobicity (UOCA = 153.3 ± 2.0°). Further, the nanofibrous membrane exhibited a rapid gravity-driven permeate flux (>1829.37 ± 83.51 L m-2 h-1) and an ultrahigh separation efficiency (>99.9%) for the surfactant-stabilized oil/water emulsions. Moreover, due to the synergistic effect between the PAN fibers and TiO2/Ag heterojunction, Rhodamine B dye in water can be removed quickly and efficiently (up to 97.67% in 90 min). More importantly, the obtained nanofibrous membrane exhibited ultrahigh stability in different harsh environments. The design of superoleophobic nanofiber membrane with a high separation efficiency and high photocatalytic activity has great potential for practical applications in the purification of oily wastewater.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Wenxuan Cao
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Hebin Liang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Yankang Deng
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Yingying Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Miaomiao Zhu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
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16
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Ding M, Lu H, Sun Y, He Y, Yu J, Kong H, Shao C, Liu C, Li C. Superelastic 3D Assembled Clay/Graphene Aerogels for Continuous Solar Desalination and Oil/Organic Solvent Absorption. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2205202. [PMID: 36354171 PMCID: PMC9798983 DOI: 10.1002/advs.202205202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/12/2022] [Indexed: 05/19/2023]
Abstract
Superelastic, arbitrary-shaped, and 3D assembled clay/graphene aerogels (CGAs) are fabricated using commercial foam as sacrificial skeleton. The CGAs possess superelasticity under compressive strain of 95% and compressive stress of 0.09-0.23 MPa. The use of clay as skeletal support significantly reduces the use of graphene by 50%. The hydrophobic CGAs show high solvent absorption capacity of 186-519 times its own weight. Moreover, both the compression and combustion methods can be adopted for reusing the CGAs. In particular, it is demonstrated a design of 3D assembled hydrophilic CGA equipped with salt collection system for continuous solar desalination. Due to energy recovery and brine transport management promoted by this design, the 3D assembled CGA system exhibits an extremely high evaporation rate of 4.11 kg m-2 h-1 and excellent salt-resistant property without salt precipitation even in 20 wt% brine for continuous 36 h illumination (1 kW m-2 ), which is the best reported result from the solar desalination devices. More importantly, salts can be collected conveniently by squeezing and drying the solution out of the salt collection system. The work provides new insights into the design of 3D assembled CGAs and advances their applications in continuous solar desalination and efficient oil/organic solvent adsorption.
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Affiliation(s)
- Meichun Ding
- School of Chemistry and Pharmaceutical EngineeringShandong First Medical University & Shandong Academy of Medical SciencesTaian271000China
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanShandong250117China
| | - Hao Lu
- CAS Key Laboratory of Engineering PlasticsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistrythe Chinese Academy of SciencesBeijing100190China
| | - Yongbin Sun
- School of Chemistry and Pharmaceutical EngineeringShandong First Medical University & Shandong Academy of Medical SciencesTaian271000China
| | - Yujian He
- College of Materials Science and EngineeringQingdao UniversityQingdao266071China
| | - Jiahui Yu
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanShandong250117China
| | - Huijun Kong
- School of Chemistry and Pharmaceutical EngineeringShandong First Medical University & Shandong Academy of Medical SciencesTaian271000China
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanShandong250117China
| | - Changxiang Shao
- School of Chemistry and Pharmaceutical EngineeringShandong First Medical University & Shandong Academy of Medical SciencesTaian271000China
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanShandong250117China
| | - Chen‐Yang Liu
- CAS Key Laboratory of Engineering PlasticsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistrythe Chinese Academy of SciencesBeijing100190China
| | - Chenwei Li
- School of Chemistry and Pharmaceutical EngineeringShandong First Medical University & Shandong Academy of Medical SciencesTaian271000China
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanShandong250117China
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Khan SA, Jain M, Pandey A, Pant KK, Ziora ZM, Blaskovich MAT, Shetti NP, Aminabhavi TM. Leveraging the potential of silver nanoparticles-based materials towards sustainable water treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115675. [PMID: 35834856 DOI: 10.1016/j.jenvman.2022.115675] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Increasing demand of pure and accessible water and improper disposal of waste into the existing water resources are the major challenges for sustainable development. Nanoscale technology is an effective approach that is increasingly being applied to water remediation. Compared to conventional water treatment processes, silver nanotechnology has been demonstrated to have advantages due to its anti-microbial and oligodynamic (biocidal) properties. This review is focused on environmentally friendly green syntheses of silver nanoparticles (AgNPs) and their applications for the disinfection and microbial control of wastewater. A bibliometric keyword analysis is conducted to unveil important keywords and topics in the utilisation of AgNPs for water treatment applications. The effectiveness of AgNPs, as both free nanoparticles (NPs) or as supported NPs (nanocomposites), to deal with noxious pollutants like complex dyes, heavy metals as well as emerging pollutants of concern is also discussed. This knowledge dataset will be helpful for researchers to identify and utilise the distinctive features of AgNPs and will hopefully stimulate the development of novel solutions to improve wastewater treatment. This review will also help researchers to prepare effective water management strategies using nano silver-based systems manufactured using green chemistry.
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Affiliation(s)
- Sadaf Aiman Khan
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Marut Jain
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Ashish Pandey
- Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India
| | - Kamal Kishore Pant
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India.
| | - Zyta Maria Ziora
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Mark A T Blaskovich
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Nagaraj P Shetti
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, India
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, India; School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248007, India.
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Vijeata A, Chaudhary S, Chaudhary GR, Umar A, Baskoutas S. Sustainable agronomic response of carbon quantum dots on Allium sativum: Translocation, physiological responses and alternations in chromosomal aberrations. ENVIRONMENTAL RESEARCH 2022; 212:113559. [PMID: 35660407 DOI: 10.1016/j.envres.2022.113559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/14/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The revolutionary growth in the usage of carbon quantum dots (CQDs) in different areas have ultimately directed their discharge in the environment and further augmented the exposure of agricultural crops to these released particles. Therefore, the aim of current study is to evaluate the uptake, translocation and phytotoxicity of blue emissive CQDs on Allium sativum plant. The genotoxicity and cytotoxicity assessment of CQDs towards Allium sativum roots was estimated as function of three different concentrations. Considering the role of CQDs in promoting seed germination at 50 ppm concentration, a greenhouse experiment was performed to evaluate their effect on plant growth. Systematic investigations have shown the translocation of CQDs and their physiological response in terms of increased shoot length wherein P-CQDs exhibited more accumulation into Allium sativum parts. Our investigations unfold the opportunity to utilize Aegle marmelos fruit derived CQDs as a growth regulator in variety of other food plants.
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Affiliation(s)
- Anjali Vijeata
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Savita Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia.
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Meng F, Zhang Y, Zhang S, Ju B, Tang B. Rational Design of Biomass-Derived Composite Aerogels for Solar-Driven Seawater Desalination and Sewage Treatment. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fantao Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China
| | - Yuang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China
| | - Shufen Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China
| | - Benzhi Ju
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China
| | - Bingtao Tang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China
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20
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Wang S, Dong L, Zhang M, Cheng F, Chen S. N-doped carbon-coated Cu 2O nanowire arrays on copper foam for rapid and stable water disinfection. J Colloid Interface Sci 2022; 625:761-773. [PMID: 35772206 DOI: 10.1016/j.jcis.2022.06.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/25/2022] [Accepted: 06/12/2022] [Indexed: 11/30/2022]
Abstract
High-speed, low-cost and long-term water disinfection method is important for us to away from waterborne diseases. Nanowires-modified electrodes can inactivate microorganisms under low energy consumption. However, small processing capacity remains a major obstacle for practical application. In this study, we coated N-doped carbon layer on Cu2O NWs to improve the conductivity and stability for electrodes. Compared with Cu2O, the work functions of Cu2O-PANI structures is 3.623 eV, indicating the electrodes can prevent the recombination of electron-hole pairs and improve the carrier transport efficiency. In addition, Mulliken charge density showed that Cu2O-PANI structure reduce the oxidation trend of Cu atom and improve the stability of electrodes. Besides, the Cu2O NWs@NC electrodes showed excellent disinfection performance for E. coli and S. aureus, which can achieve 99.9% sterilizing rate under high flux (1200 mL min-1). Under this condition, the electrodes can continuously treat 576 L wastewater, which is about 10-folds handling capacity than others. Moreover, the bactericidal mechanism is synergistic of electroporation and reactive oxygen species, and the main ROS were electrons, OH and O2-. Therefore, this electrodes has a great prospect for rapid and stable water treatment system.
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Affiliation(s)
- Shuting Wang
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Liting Dong
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Mutian Zhang
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Frank Cheng
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Shougang Chen
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
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21
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Zhang S, Wei H, Zhang Z, Zhang J, Bao H, Zhang W. A bioinspired solar evaporator with a horizontal channel-like framework for efficient and stable high-salinity brine desalination. NANOSCALE 2022; 14:6066-6074. [PMID: 35383817 DOI: 10.1039/d2nr00525e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In recent years, solar steam generation has been one of the most promising and sustainable techniques for water desalination. However, the heat loss to bulk water dramatically decreases the evaporation rate. Besides, salt deposition on the evaporation surface during brine treatment limits the long-term operation of evaporators. Herein, solar evaporators with a horizontal channel-like framework are reported and high efficiency and outstanding salt resistance are achieved. Firstly, eggplants with a hollow fiber alignment structure were carbonized as CEP evaporators. The CEP-H evaporator with a horizontal fiber growth direction shows a high evaporation efficiency of 90.6% and excellent salt resistance when treating high-salinity brine (20 wt%). The low thermal conductivity perpendicular to the fiber growth direction impedes the conductive heat transfer into bulk water, and fast water transport along the fiber growth direction is beneficial for salt resistance. In addition, a proof-of-concept evaporator polypyrrole-coated polypropylene hollow fiber membrane with a horizontal channel-like framework (PPy/PP-H) has also been developed. This hollow fiber membrane shows a high evaporation rate of 1.64 kg m-2 h-1 due to multiangle evaporation and also demonstrates excellent salt-resisting performance for high-salinity brine treatment (20 wt%). The study demonstrates the effect of the horizontal channel-like framework for high evaporation performance and salt resistance, providing new insights into the solar evaporator design for seawater desalination and wastewater treatment.
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Affiliation(s)
- Shuqian Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
| | - Han Wei
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhijian Zhang
- Jushi Fiberglass Research Institute, Jiaxing 314500, P.R. China
| | - Jianzhong Zhang
- Jushi Fiberglass Research Institute, Jiaxing 314500, P.R. China
| | - Hua Bao
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wang Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
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22
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Liao Y, Li Y, Zhao R, Zhang J, Zhao L, Ji L, Zhang Z, Liu X, Qin G, Zhang X. High-entropy-alloy nanoparticles with ultra-mixed 21 elements for efficient photothermal conversion. Natl Sci Rev 2022; 9:nwac041. [PMID: 35677225 PMCID: PMC9170356 DOI: 10.1093/nsr/nwac041] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/29/2022] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Multi-metallic nanoparticles have been proven to be an efficient photothermal conversion material, for which the optical absorption can be broadened through the interband transitions (IBTs), but it remains a challenge due to the strong immiscibility among the repelling combinations. Here, assisted by an extremely high evaporation temperature, ultra-fast cooling and vapor-pressure strategy, the arc-discharged plasma method was employed to synthesize ultra-mixed multi-metallic nanoparticles composed of 21 elements (FeCoNiCrYTiVCuAlNbMoTaWZnCdPbBiAgInMnSn), in which the strongly repelling combinations were uniformly distributed. Due to the reinforced lattice distortion effect and excellent IBTs, the nanoparticles can realize an average absorption of >92% in the entire solar spectrum (250 to 2500 nm). In particular, the 21-element nanoparticles achieve a considerably high solar steam efficiency of nearly 99% under one solar irradiation, with a water evaporation rate of 2.42 kg m–2 h–1, demonstrating a highly efficient photothermal conversion performance. The present approach creates a new strategy for uniformly mixing multi-metallic elements for exploring their unknown properties and various applications.
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Affiliation(s)
- Yijun Liao
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
| | - Yixing Li
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
| | - Rongzhi Zhao
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
| | - Jian Zhang
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
| | - Lizhong Zhao
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
| | - Lianze Ji
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
| | - Zhengyu Zhang
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
| | - Xiaolian Liu
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
| | - Gaowu Qin
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
| | - Xuefeng Zhang
- Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang110819, China
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310012, China
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23
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Othmani A, Magdouli S, Senthil Kumar P, Kapoor A, Chellam PV, Gökkuş Ö. Agricultural waste materials for adsorptive removal of phenols, chromium (VI) and cadmium (II) from wastewater: A review. ENVIRONMENTAL RESEARCH 2022; 204:111916. [PMID: 34428450 DOI: 10.1016/j.envres.2021.111916] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 05/21/2023]
Abstract
Management of basic natural resources and the spent industrial and domestic streams to provide a sustainable safe environment for healthy living is a magnum challenge to scientists and environmentalists. The present remedial approach to the wastewater focuses on recovering pure water for reuse and converting the contaminants into a solid matrix for permanent land disposal. However, the ground water aquifers, over a long period slowly leach the contaminants consequently polluting the ground water. Synthetic adsorbents, mainly consisting of polymeric resins, chelating agents, etc. are efficient and have high specificity, but ultimate disposal is a challenge as most of these materials are non-biodegradable. In this context, it is felt appropriate to review the utility of adsorbents based on natural green materials such as agricultural waste and restricted to few model contaminants: phenols, and heavy metals chromium(VI), and cadmium(II) in view of the vast amount of literature available. The article discusses the features of the agricultural waste material-based adsorbents including the mechanism. It is inferred that agricultural waste materials are some of the common renewable sources available across the globe and can be used as sustainable adsorbents. A discussion on challenges for industrial scale implementation and integration with advanced technologies like magnetic-based approaches and nanotechnology to improve the removal efficiency is included for future prospects.
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Affiliation(s)
- Amina Othmani
- Faculty of Sciences of Monastir, University of Monastir, Avenue of the Environment, 5019, Monastir, Tunisia.
| | - Sara Magdouli
- Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, M3J 1P3, Ontario, Canada; Institut National de la Recherche Scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 Rue de la Couronne, Québec, G1K 9A9, Qc, Canada; Centre Technologique des Résidus Industriels en Abitibi Témiscamingue, 433 Boulevard du Collège, J9X0E1, Canada
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - Ashish Kapoor
- Department of Chemical Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | | | - Ömür Gökkuş
- Erciyes University, Engineering Faculty Environmental Engineering Department, 38039, Kayseri, Turkey
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24
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Yang H, Sun Y, Peng M, Cai M, Zhao B, Li D, Liang Z, Jiang L. Tailoring the Salt Transport Flux of Solar Evaporators for a Highly Effective Salt-Resistant Desalination with High Productivity. ACS NANO 2022; 16:2511-2520. [PMID: 35072450 DOI: 10.1021/acsnano.1c09124] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developing highly effective salt-resistant solar evaporators for a long-term desalination with a high evaporation rate and water production rate remains a great challenge. Herein, we fabricated a three-dimensional printed hierarchical porous reduced graphene oxide/carbon black (3DP-HP rGO/CB) solar evaporator constructed with a thin layer of porous photothermal interface and a grid of hierarchical porous transport channel possessing a large-sized porous microstructure. The 3DP-HP rGO/CB solar evaporator demonstrates a tailored high-salt transport flux of up to 4.3 kg·m-2·h-1, which displays a highly effective salt-resistant performance at a high evaporation rate of 10.5 kg·m-2·h-1 during a desalination of 10 wt % NaCl brine under 8 kW·m-2 illumination. Experiments and theoretical calculations prove that the large porous microstructure with abundant and low-resistance salt ion channels endows solar evaporators with a high salt transport flux, therefore boosting salt resistance compared to traditional solar evaporators. A 10 d desalination experiment shows the long-term salt resistance of a 3DP-HP rGO/CB solar evaporator for a high-rate and stable evaporation and water production. Furthermore, the 3DP-HP rGO/CB evaporator can purify 10 wt % NaCl brine at an ultrafast water production rate of up to 5.6 L·m-2·h-1 under natural sunlight. This work demonstrates great potential for the practical implementation of solar desalination with high productivity.
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Affiliation(s)
- He Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Yinghui Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, Jiangsu, P. R. China
| | - Meiwen Peng
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Mujin Cai
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Bo Zhao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Dan Li
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Zhiqiang Liang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Lin Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, P. R. China
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25
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Identification of Fenton-like active Cu sites by heteroatom modulation of electronic density. Proc Natl Acad Sci U S A 2022; 119:2119492119. [PMID: 35165185 PMCID: PMC8872710 DOI: 10.1073/pnas.2119492119] [Citation(s) in RCA: 75] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2021] [Indexed: 12/30/2022] Open
Abstract
The Fenton-like process based on peroxymonosulfate (PMS) has been widely investigated and recognized as a promising alternative in recent years for the degradation of persistent organic pollutants. However, the sluggish kinetics of PMS activation results in prohibitive costs and substantial chemical inputs, impeding its practical applications in water purification. This work demonstrates that tuning the electronic structure of single-atom sites at the atomic level is a powerful approach to achieve superior PMS activation kinetics. The Cu-based catalyst with the optimized electronic structure exhibits superior performance over most of the state-of-the-art heterogeneous Fenton-like catalysts, while homogeneous Cu(II) shows very poor activity. This work provides insights into the electronic structure regulation of metal centers and structure–activity relationship at the atomic level. Developing heterogeneous catalysts with atomically dispersed active sites is vital to boost peroxymonosulfate (PMS) activation for Fenton-like activity, but how to controllably adjust the electronic configuration of metal centers to further improve the activation kinetics still remains a great challenge. Herein, we report a systematic investigation into heteroatom-doped engineering for tuning the electronic structure of Cu-N4 sites by integrating electron-deficient boron (B) or electron-rich phosphorus (P) heteroatoms into carbon substrate for PMS activation. The electron-depleted Cu-N4/C-B is found to exhibit the most active oxidation capacity among the prepared Cu-N4 single-atom catalysts, which is at the top rankings of the Cu-based catalysts and is superior to most of the state-of-the-art heterogeneous Fenton-like catalysts. Conversely, the electron-enriched Cu-N4/C-P induces a decrease in PMS activation. Both experimental results and theoretical simulations unravel that the long-range interaction with B atoms decreases the electronic density of Cu active sites and down-shifts the d-band center, and thereby optimizes the adsorption energy for PMS activation. This study provides an approach to finely control the electronic structure of Cu-N4 sites at the atomic level and is expected to guide the design of smart Fenton-like catalysts.
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26
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Macroporous chitin microspheres prepared by surfactant micelle swelling strategy for rapid capture of lead (II) from wastewater. Carbohydr Polym 2022; 276:118775. [PMID: 34823791 DOI: 10.1016/j.carbpol.2021.118775] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 09/22/2021] [Accepted: 10/13/2021] [Indexed: 11/21/2022]
Abstract
Heavy metal pollution of water source continues to be one of the most serious environmental problems which have attracted major global concern. Here, a macroporous chitin microsphere is prepared by surfactant micelle swelling strategy followed by modification with tetraethylenepentamine for Pb2+ removal from wastewater. The resultant adsorbent not only exhibits fast adsorption kinetic (>80% of its equilibrium uptake within 20 min) but also has high adsorption capacity of 218.4 ± 6.59 mg/g and excellent reusability (>75% of its initial adsorption capacity after five adsorption/desorption cycles). More importantly, under the continuous operating mode, the adsorbent can treat about 39,000 kg water/kg adsorbent, and the Pb2+ concentration decreases from 2000 μg/L to smaller than 10 μg/L, meeting the drinking water standard recommended by the World Health Organization (10 μg/L). All results indicate that the tetraethylenepentamine-modified macroporous chitin microspheres have great potential in the treatment of heavy metal contamination.
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27
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Chen K, Li L, Zhang J. Design of a Separated Solar Interfacial Evaporation System for Simultaneous Water and Salt Collection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59518-59526. [PMID: 34852191 DOI: 10.1021/acsami.1c18379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Solar-driven interfacial evaporation (SIE) is very promising to alleviate the freshwater scarcity issue. However, salt deposition on the sample surface will reduce evaporation performance, and compromised light absorption will result in a low water collection rate in conventional SIE apparatuses. Here, we report the design of a separated SIE system composed of a polypyrrole@Co3O4@aluminum sheet and a T-shaped superhydrophilic polyethylene/polypropylene nonwoven fabric right under the sheet. The photothermal surface exposed outside the closed SIE system is separated from the evaporation surface. Thus, salt fouling of solar evaporators is thoroughly avoided and the freshwater collection rate is greatly enhanced. Compared with conventional SIE systems, the separated SIE system has many advantages: simultaneous water and salt collection, a long-term stable evaporation rate even for concentrated brine (1.25 kg m-2 h-1 under 1 kW m-2 (1 sun) illumination, 15 wt % NaCl(aq), ≥120 h), high salt collection efficiency (≥97%), and a high water collection rate under natural sunlight, e.g., 0.72 kg m-2 h-1 in early spring (0.5-0.6 sun, 19-24 °C) and 0.33 kg m-2 h-1 in cold winter (0.3-0.4 sun, -6 to 4 °C). We foresee that the separated SIE system holds great potential for practical freshwater and salt collection from seawater.
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Affiliation(s)
- Kai Chen
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Lingxiao Li
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Junping Zhang
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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28
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Xu N, Zhang H, Lin Z, Li J, Liu G, Li X, Zhao W, Min X, Yao P, Zhou L, Song Y, Zhu B, Zhu S, Zhu J. A scalable fish-school inspired self-assembled particle system for solar-powered water-solute separation. Natl Sci Rev 2021; 8:nwab065. [PMID: 34858610 PMCID: PMC8566183 DOI: 10.1093/nsr/nwab065] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 03/26/2021] [Accepted: 04/05/2021] [Indexed: 12/05/2022] Open
Abstract
Complete separation of water and solute is the ultimate goal of water treatment, for maximized resource recycling. However, commercialized approaches such as evaporative crystallizers consume a large amount of electricity with a significant carbon footprint, leading to calls for alternative energy-efficient and eco-friendly strategies. Here, inspired by schooling fish, we demonstrate a collective system self-assembled by expanded polystyrene (EPS)-core/graphene oxide (GO)-shell particles, which enables autonomous, efficient and complete water-solute separation powered by sunlight. By taking advantage of surface tension, these tailored particles school together naturally and are bonded as a system to function collectively and coordinatively, to nucleate, grow and output salt crystals continuously and automatically out of even saturated brine, to complete water-solute separation. Solar-vapor conversion efficiency over 90% and salt production rate as high as 0.39 kg m–2 h–1 are achieved under 1-sun illumination for this system. It reduces the carbon footprint of ∼50 kg for treating 1-ton saturated brine compared with the commercialized approaches.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Jia Zhu
- Corresponding author. E-mail:
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29
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Zhang Y, Huang X, Chen Y, Xie T, Jia L, Tan X, Yu T. Cadmium ions sequestration and transformation on confined magnesium hydroxide gel beads. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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30
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Bonnett BL, Ilic S, Flint K, Cai M, Yang X, Cornell HD, Taylor A, Morris AJ. Mechanistic Investigations into and Control of Anisotropic Metal-Organic Framework Growth. Inorg Chem 2021; 60:10439-10450. [PMID: 34190552 DOI: 10.1021/acs.inorgchem.1c01026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The porphyrinic metal-organic framework, PCN-222, exhibits anisotropic growth behavior to form nanorods and microrods with aspect ratios 3 < x < 94. Control of microrod aspect ratios has been demonstrated through the identification of several factors that dictate crystal growth, particularly the concentrations of a ligand, a modulator, and an exogenous base. An increase in the local concentration of a deprotonated ligand, which is proportional to the nucleation rate, is associated with smaller crystals, while increased modulator concentration leads to longer microrods. Addition of a deprotonating agent not only contributes to higher aspect ratios but also results in an improvement to particle dispersity. Here, we report acid-base co-modulation methods with difluoroacetic acid and triethylamine to effectively tune PCN-222 aspect ratios. A series of mechanisms is identified for the growth of PCN-222: (1) ligand deprotonation, (2) nucleation, (3) oriented attachment, (4) Ostwald ripening, and (5) dissolution-recrystallization. Time trials of co-modulated samples revealed three separate ripening growth events, with each resulting in larger and more monodisperse crystals. With an understanding of these crystal growth factors and mechanisms, the highest aspect ratio, non-templated metal-organic frameworks were synthesized (94 ± 9).
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Affiliation(s)
- Brittany L Bonnett
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Stefan Ilic
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Katie Flint
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Meng Cai
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Xiaozhou Yang
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Hannah D Cornell
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Ashleigh Taylor
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Amanda J Morris
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
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31
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Rong F, Lu Q, Mai H, Chen D, Caruso RA. Hierarchically Porous WO 3/CdWO 4 Fiber-in-Tube Nanostructures Featuring Readily Accessible Active Sites and Enhanced Photocatalytic Effectiveness for Antibiotic Degradation in Water. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21138-21148. [PMID: 33908249 DOI: 10.1021/acsami.0c22825] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The intentional design and construction of photocatalysts containing heterojunctions with readily accessible active sites will improve their ability to degrade pollutants. Herein, hierarchically porous WO3/CdWO4 fiber-in-tube nanostructures with three accessible surfaces (surface of core fiber and inner and outer surfaces of the porous tube shell) were fabricated by an electrospinning method. This WO3/CdWO4 heterostructure, assembled by interconnected nanoparticles, displays good photocatalytic degradation of ciprofloxacin (CIP, 93.4%) and tetracycline (TC, 81.6%) after 90 min of simulated sunlight irradiation, much higher than the pristine WO3 (<75.3% for CIP and <53.6% for TC) or CdWO4 materials (<58.9% for CIP and <39.5% for TC). The WO3/CdWO4 fiber-in-tube promotes the separation of photoinduced electrons and holes and also provides readily accessible reaction sites for photocatalytic degradation. The dominant active species determined by trapping active species and electron paramagnetic resonance were hydroxyl radicals followed by photogenerated holes and superoxide anions. The WO3/CdWO4 materials formed a Z-scheme heterojunction that generated superoxide anion and hydroxyl radicals, leading to degradation of antibiotics (CIP and TC) via photocatalysis in aqueous solution.
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Affiliation(s)
- Feng Rong
- School of Material Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China
| | - Qifang Lu
- School of Material Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China
| | - Haoxin Mai
- Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Dehong Chen
- Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Rachel A Caruso
- Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne, Victoria 3000, Australia
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32
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Wu S, Hua X, Ma B, Fan H, Miao R, Ulbricht M, Hu C, Qu J. Three-Dimensional Analysis of the Natural-Organic-Matter Distribution in the Cake Layer to Precisely Reveal Ultrafiltration Fouling Mechanisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5442-5452. [PMID: 33710872 DOI: 10.1021/acs.est.1c00435] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cake layer formation is the dominant ultrafiltration membrane fouling mechanism after long-term operation. However, precisely analyzing the cake-layer structure still remains a challenge due to its thinness (micro/nano scale). Herein, based on the excellent depth-resolution and foulant-discrimination of time-of-flight secondary ion mass spectrometry, a three-dimensional analysis of the cake-layer structure caused by natural organic matter was achieved at lower nanoscale for the first time. When humic substances or polysaccharides coexisted with proteins separately, a homogeneous cake layer was formed due to their interactions. Consequently, membrane fouling resistances induced by proteins were reduced by humic substances or polysaccharides, leading to a high flux. However, when humic substances and polysaccharides coexisted, a sandwich-like cake layer was formed owing to the asynchronous deposition based on molecular dynamics simulations. As a result, membrane fouling resistances were superimposed, and the flux was low. Furthermore, it is interesting that cake-layer structures were relatively stable under common UF operating conditions (i.e., concentration and stirring). These findings better elucidate membrane fouling mechanisms of different natural-organic-matter mixtures. Moreover, it is demonstrated that membrane fouling seems lower with a more homogeneous cake layer, and humic substances or polysaccharides play a critical role. Therefore, regulating the cake-layer structure by feed pretreatment scientifically based on proven mechanisms should be an efficient membrane-fouling-control strategy.
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Affiliation(s)
- Siqi Wu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Hua
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Baiwen Ma
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Lehrstuhl fur Technische Chemie II, Universitat Duisburg-Essen, Essen 45117, Germany
| | - Hongwei Fan
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universitat Hannover, Hannover 30167, Germany
| | - Rui Miao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Mathias Ulbricht
- Lehrstuhl fur Technische Chemie II, Universitat Duisburg-Essen, Essen 45117, Germany
| | - Chengzhi Hu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Jain K, Patel AS, Pardhi VP, Flora SJS. Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment. Molecules 2021; 26:1797. [PMID: 33806788 PMCID: PMC8005047 DOI: 10.3390/molecules26061797] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/05/2021] [Accepted: 03/11/2021] [Indexed: 12/16/2022] Open
Abstract
Clean and safe water is a fundamental human need for multi-faceted development of society and a thriving economy. Brisk rises in populations, expanding industrialization, urbanization and extensive agriculture practices have resulted in the generation of wastewater which have not only made the water dirty or polluted, but also deadly. Millions of people die every year due to diseases communicated through consumption of water contaminated by deleterious pathogens. Although various methods for wastewater treatment have been explored in the last few decades but their use is restrained by many limitations including use of chemicals, formation of disinfection by-products (DBPs), time consumption and expensiveness. Nanotechnology, manipulation of matter at a molecular or an atomic level to craft new structures, devices and systems having superior electronic, optical, magnetic, conductive and mechanical properties, is emerging as a promising technology, which has demonstrated remarkable feats in various fields including wastewater treatment. Nanomaterials encompass a high surface to volume ratio, a high sensitivity and reactivity, a high adsorption capacity, and ease of functionalization which makes them suitable for application in wastewater treatment. In this article we have reviewed the techniques being developed for wastewater treatment using nanotechnology based on adsorption and biosorption, nanofiltration, photocatalysis, disinfection and sensing technology. Furthermore, this review also highlights the fate of the nanomaterials in wastewater treatment as well as risks associated with their use.
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Affiliation(s)
- Keerti Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)—Raebareli, Lucknow 226002, India; (A.S.P.); (V.P.P.)
| | - Anand S. Patel
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)—Raebareli, Lucknow 226002, India; (A.S.P.); (V.P.P.)
| | - Vishwas P. Pardhi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)—Raebareli, Lucknow 226002, India; (A.S.P.); (V.P.P.)
| | - Swaran Jeet Singh Flora
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)—Raebareli, Lucknow 226002, India
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Ray SS, Iroegbu AO. Nanocellulosics: Benign, Sustainable, and Ubiquitous Biomaterials for Water Remediation. ACS OMEGA 2021; 6:4511-4526. [PMID: 33644559 PMCID: PMC7905826 DOI: 10.1021/acsomega.0c06070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 01/27/2021] [Indexed: 05/06/2023]
Abstract
Water is critical for all lives to thrive. Access to potable and safe water has been argued to rank top among the prerequisites for defining the standard of living of a nation. However, there is a global decline in water quality due to human activities and other factors that severely impact freshwater resources such as saltwater intrusion and natural disasters. It has been pointed out that the millions of liters of industrial and domestic wastewater generated globally have the potential to help mitigate water scarcity if it is appropriately captured and remediated. Among the many initiatives to increase access to clean water, the scientific community has focused on wastewater remediation through the utilization of bioderived materials, such as nanocellulosics. Nanocellulosics, derived from cellulose, have the advantages of being ubiquitous, nontoxic, and excellent adsorbents. Furthermore, the surface properties of nanocellulosic materials can easily be modified. These advantages make them promising materials for water remediation applications. This perspective highlights the most important new developments in the application of nanocellulosics in water treatment technologies, such as membrane, adsorption, sensors, and flocculants/coagulants. We also identify where further work is urgently required for the widespread industrial application of nanocellulosics in wastewater treatment.
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Affiliation(s)
- Suprakas Sinha Ray
- Centre
for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology
Innovation Centre, Council for Scientific
and Industrial Research, CSIR, Pretoria 0001, South Africa
- Department
of Chemical Sciences, University of Johannesburg,
Doornfontein, Johannesburg 2028, South Africa
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Wang G, Zhao Y, Ma H, Zhang C, Dong X, Zhang X. Enhanced peroxymonosulfate activation on dual active sites of N vacancy modified g-C 3N 4 under visible-light assistance and its selective removal of organic pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:144139. [PMID: 33280874 DOI: 10.1016/j.scitotenv.2020.144139] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/21/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Constructing highly efficient metal-free material towards peroxymonosulfate (PMS) activation under photocatalytic assistance is a promising strategy for water decontamination. Herein, N vacancy modified g-C3N4 nanotube (VCN) was prepared to build a novel photo-assisted PMS activation system (PPAS), in which the unique electronic structure created by N vacancy could favor the PMS activation on VCN under visible-light irradiation. The role of N vacancy in PPAS was firstly studied through tuning its content in VCN. The results showed that the N vacancy greatly improved PMS activation on VCN PPAS towards organic pollutants removal. The VCN PPAS with moderate N vacancy modification performed best, whose kinetic constant for Rhodamine B degradation was 9.6 and 2.6 times higher than that of VCN/PMS system and pristine g-C3N4 PPAS, respectively. Moreover, the VCN PPAS performed well in wide pH range (3-12) and real water background. Selective removal of different organic pollutants was found on VCN PPAS, owing to the different interaction between pollutant and the catalyst surface with surface-bound radicals. The O2- and OH were major oxidants for pollutant removal in VCN PPAS, which were produced on dual active sites of VCN via two pathways: The N vacancy enhanced PMS adsorption and trapped photogenerated electrons for PMS reduction into OH, while the electron-deficient C atoms created by N loss promoted the PMS oxidation into O2-.
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Affiliation(s)
- Guanlong Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Ya Zhao
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Huanran Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Chenjing Zhang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xiaoli Dong
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xiufang Zhang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Guo RF, Zhao X, Li XY, Liu ZH. Preparation and formation mechanism of graphene oxide supported hollow mesoporous Mg2Si3O6(OH)4 micro-nanospheres with highly efficient methylene blue dye removal from wastewater. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sarmadi N, Gharabaghi M, Tamadoni Saray M, Darestani M, Garman D, Koshy P, S Mofarah S, Sorrell CC. Highly Mesoporous Hybrid Transition Metal Oxide Nanowires for Enhanced Adsorption of Rare Earth Elements from Wastewater. Inorg Chem 2021; 60:175-184. [PMID: 33337147 DOI: 10.1021/acs.inorgchem.0c02762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Removal of rare earth elements (REEs) from industrial wastewater is a continual challenge. To date, several approaches to the synthesis of nanoadsorbants for this application have been reported, although these are characterized by insufficient adsorption capacity and limitations in cycling stability. The present work reports the fabrication and performance of hierarchical hybrid transition metal oxide (TMO) nanowires deposited on carbon fibers. An ordered assembly of hybrid TMO nanowires exhibits an outstanding adsorbance of 1000 mg·g-1 of REEs with 93% recyclability. This superior performance is attributed to the unique mesoporous architecture of the nanowires, which exhibits a high surface area of 122 cm3·g-1. Further, rapid adsorption/desorption of the REEs reveals minimal morphological alteration and hence high structural stability of these hybrid TMO nanowires after multiple cycles. The ready accessibility of the adsorption sites at crystallite boundaries and the surfaces as well as rapid adsorption of the REEs on the mesoporous nanostructure facilitate considerable adsorption capacity, improved structural stability, and extended cyclability, all of which suggest the potential for this material in REE extraction.
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Affiliation(s)
- Negin Sarmadi
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Mahdi Gharabaghi
- School of Mining Engineering, University of Tehran, Tehran, Iran
| | - Mahmoud Tamadoni Saray
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Mariam Darestani
- School of Mechanical Engineering, Western Sydney University, Sydney, NSW 2751, Australia
| | - David Garman
- School of Freshwater Science, University of Wisconsin - Milwaukee, Milwaukee, Wisconsin 53204, United States
| | - Pramod Koshy
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
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Affiliation(s)
- Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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Kyzas GZ, Favvas EP, Kostoglou M, Mitropoulos AC. Effect of agitation on batch adsorption process facilitated by using nanobubbles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Singhal AV, George R, Sharma AK, Malwal D, Lahiri I. Development of superhydrophillic tannic acid-crosslinked graphene oxide membranes for efficient treatment of oil contaminated water with enhanced stability. Heliyon 2020; 6:e05127. [PMID: 33072910 PMCID: PMC7549068 DOI: 10.1016/j.heliyon.2020.e05127] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/20/2020] [Accepted: 09/28/2020] [Indexed: 11/29/2022] Open
Abstract
In the present age of industrialization, oil contamination in the waste water has become a huge global concern due to its several negative impacts on human health and aquatic ecosystem. In order to address this problem, a novel oleophobic and super-hydrophilic graphene-based membrane has been developed using simple and cost-effective vacuum filtration methodology. Prior developing the membranes, the graphene oxide (GO) sheets were crosslinked with tannic acid (TA) molecules in order to improve their mechanical and surface properties. To obtain the structural and morphological information of the membranes and their constituents, Field Emission Scanning Electron (FE-SEM) microscopy, X-Ray Diffraction (XRD), FTIR spectroscopy and Raman spectroscopy was used. When tested with simulated oilfield effluent samples, these membranes exhibited significant reduction in the values of chemical oxygen demand (COD), total dissolved solids (TDS), total suspended solids (TSS) and turbidity demonstrating low-oil adhesion and preferable oil rejection rates. Moreover, such crosslinked membranes are highly stable which can withstand the pressure of water filtration. In such a way, TA crosslinked GO membranes present a robust and efficient way to treat oil contaminated water released from various industries which can be reused for numerous further applications.
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Affiliation(s)
- Akshay V. Singhal
- Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
- Log 9 Materials Scientific Pvt. Ltd., Mathikere, Bengaluru, Karnataka, 560054, India
| | - Robin George
- Log 9 Materials Scientific Pvt. Ltd., Mathikere, Bengaluru, Karnataka, 560054, India
| | - Anshul Kumar Sharma
- Log 9 Materials Scientific Pvt. Ltd., Mathikere, Bengaluru, Karnataka, 560054, India
| | - Deepika Malwal
- Log 9 Materials Scientific Pvt. Ltd., Mathikere, Bengaluru, Karnataka, 560054, India
| | - Indranil Lahiri
- Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
- Corresponding author.
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41
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Liao Z, Nguyen MN, Wan G, Xie J, Ni L, Qi J, Li J, Schäfer AI. Low pressure operated ultrafiltration membrane with integration of hollow mesoporous carbon nanospheres for effective removal of micropollutants. JOURNAL OF HAZARDOUS MATERIALS 2020; 397:122779. [PMID: 32387831 DOI: 10.1016/j.jhazmat.2020.122779] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/25/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
An effective way to remove micropollutants is desirable for water purification. In this work, a dual-functional ultrafiltration (DFUF) membrane was fabricated by loading hollow mesoporous carbon nanospheres (HMCNs) into the finger-like support layer pores of the polymeric ultrafiltration (UF) membrane. The designed DFUF membrane combines the high selectivity of ultrafiltration that removes macromolecules based on size exclusion mechanism, and excellent adsorption capacity of HMCNs towards micropollutants in water. When tetracycline (TCN) and 17β-Estradiol (E2) were selected as model micropollutants, corresponding 97 % and 94 % removal were achieved at a low pressure less than 0.15 bar and a flux of 50 and 64 L h-1 m-2 (estimated residence time less than 6 s), respectively. Moreover, simultaneous removal of multiple pollutants was demonstrated by filtering a mixture containing TCN and polyethylene glycols (PEG) 600 kDa macromolecules. Over a long filtration period (more than 60 h) that produced 3180 L/m2 of permeate, the TCN concentration reduced from 100 μg/L in the feed to less than 10 μg/L in the permeate. The above results indicate that the DFUF membrane is capable of removing the small molecular and macromolecular pollutants simultaneously at low pressure, and hence offers remarkable potential in water treatment applications.
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Affiliation(s)
- Zhipeng Liao
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Minh Nhat Nguyen
- Membrane Technology Department, Institute of Functional Interfaces (IFG-MT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Gaojie Wan
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jia Xie
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Linhan Ni
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Junwen Qi
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jiansheng Li
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Andrea Iris Schäfer
- Membrane Technology Department, Institute of Functional Interfaces (IFG-MT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Jain M, Mudhoo A, Ramasamy DL, Najafi M, Usman M, Zhu R, Kumar G, Shobana S, Garg VK, Sillanpää M. Adsorption, degradation, and mineralization of emerging pollutants (pharmaceuticals and agrochemicals) by nanostructures: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34862-34905. [PMID: 32656757 DOI: 10.1007/s11356-020-09635-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 06/05/2020] [Indexed: 05/12/2023]
Abstract
This review discusses a fresh pool of research findings reported on the multiple roles played by metal-based, magnetic, graphene-type, chitosan-derived, and sonicated nanoparticles in the treatment of pharmaceutical- and agrochemical-contaminated waters. Some main points from this review are as follows: (i) there is an extensive number of nanoparticles with diverse physicochemical and morphological properties which have been synthesized and then assessed in their respective roles in the degradation and mineralization of many pharmaceuticals and agrochemicals, (ii) the exceptional removal efficiencies of graphene-based nanomaterials for different pharmaceuticals and agrochemicals molecules support arguably well a high potential of these nanomaterials for futuristic applications in remediating water pollution issues, (iii) the need for specific surface modifications and functionalization of parent nanostructures and the design of economically feasible production methods of such tunable nanomaterials tend to hinder their widespread applicability at this stage, (iv) supplementary research is also required to comprehensively elucidate the life cycle ecotoxicity characteristics and behaviors of each type of engineered nanostructures seeded for remediation of pharmaceuticals and agrochemicals in real contaminated media, and last but not the least, (v) real wastewaters are extremely complex in composition due to the mix of inorganic and organic species in different concentrations, and the presence of such mixed species have different radical scavenging effects on the sonocatalytic degradation and mineralization of pharmaceuticals and agrochemicals. Moreover, the formulation of viable full-scale implementation strategies and reactor configurations which can use multifunctional nanostructures for the effective remediation of pharmaceuticals and agrochemicals remains a major area of further research.
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Affiliation(s)
- Monika Jain
- Department of Natural Resource Management, College of Forestry, Banda University of Agriculture & Technology, Banda, Uttar Pradesh, 210001, India
| | - Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837, Mauritius.
| | - Deepika Lakshmi Ramasamy
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Mahsa Najafi
- Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud, 123, Muscat, Oman
| | - Runliang Zhu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036, Stavanger, Norway
| | - Sutha Shobana
- Department of Chemistry & Research Centre, Mohamed Sathak Engineering College, Ramanathapuram, Tamil Nadu, India
| | - Vinod Kumar Garg
- Centre for Environmental Sciences and Technology, Central University of Punjab, Bathinda, 151001, India
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam.
- Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam.
- School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, QLD, 4350, Australia.
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa.
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43
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Zhang Q, Cui Y, Gu C, Zhang C. Potential concerns in fullerene application to water treatment related to transformation, cellular uptake and intracellular catalysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 728:138754. [PMID: 32388024 DOI: 10.1016/j.scitotenv.2020.138754] [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: 02/07/2020] [Revised: 04/03/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Fullerene (C60) exhibits versatile properties that shows great potential for improving water treatment technologies. However, the probable transformation of C60 during water treatment, which consequently changes the physicochemical properties and toxicity of the parent compound, may introduce doubt concerning its application. Our results demonstrated that the C60 aggregate (nC60) was transformed to a more oxidized form under common water disinfection processes (i.e., ultraviolet irradiation and photochlorination). The light-irradiated product (UV_nC60) exhibited lower cytotoxicity toward macrophage J774A.1 cells relative to nC60, whereas the photochlorinated product (UV/Cl_nC60) increased the toxic effect. Particularly, the internalization of nanoparticles and the mimetic superoxide dismutase (SOD) activity resulted in the selective accumulation of intracellular hydrogen peroxide. Thus, sequential exposure to a nonlethal dose of nanoparticles followed by 5 μM copper ions (which is a much lower level than the EPA-regulated level of 20 μM in drinking water) led to the significant production of hydroxyl radicals inside cells. The uptake and SOD-like activity were highly structure-related, with the most noteworthy activity obtained for UV/Cl_nC60. These results emphasize that environmental transformation-induced property changes should be given adequate consideration in the risk assessment of C60.
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Affiliation(s)
- Qiurong Zhang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yueting Cui
- School of Environment, Beijing Normal University, Beijing 100857, China
| | - Chuanhui Gu
- School of Environment, Beijing Normal University, Beijing 100857, China
| | - Chengdong Zhang
- School of Environment, Beijing Normal University, Beijing 100857, China..
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44
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Pan S, Zhang X, Wang Y, Liu J, Pan B. Mesoporous polyacrylonitrile membrane with ultrahigh loading of well-dispersed Fe2O3 nanoparticles: A powerful phosphate scavenger Enabling inhibition of microbial regrowth in Treated Water. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118048] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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45
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Liu W, Zhang Y, Zhang L, Guo J, Wei J. Polysulfone Ultrafiltration Membrane Promoted by Brownmillerite SrCuxCo1–xO3−λ-Deposited MCM-41 for Industrial Wastewater Decontamination: Catalytic Oxidation and Antifouling Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Wei Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Yuqing Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Longfei Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jiaqi Guo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jiahao Wei
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
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Li S, Xue B, Wu G, Liu Y, Zhang H, Ma D, Zuo J. A Novel Flower-Like Ag/AgCl/BiOCOOH Ternary Heterojunction Photocatalyst: Facile Construction and Its Superior Photocatalytic Performance for the Removal of Toxic Pollutants. NANOMATERIALS 2019; 9:nano9111562. [PMID: 31689957 PMCID: PMC6915398 DOI: 10.3390/nano9111562] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/28/2019] [Accepted: 10/31/2019] [Indexed: 01/24/2023]
Abstract
Novel 3D flower-like Ag/AgCl/BiOCOOH ternary heterojunction photocatalysts were fabricated by the solvothermal and in-situ precipitation methods, followed by light reduction treatment. The Ag/AgCl nanoparticles were homogeneously distributed on 3D BiOCOOH microspheres. These obtained catalysts were characterized by XRD, SEM, TEM, diffuse reflectance spectra (DRS), and photoluminescence (PL). As expected, they exhibited extraordinary photocatalytic capabilities for the elimination of rhodamine B (RhB) and ciprofloxacin (CIP) under simulated sunlight, the results revealed that the Ag/AgCl/BiOCH-3 with 20 wt.% of Ag/AgCl possessed the maximum activity, and the rate constant for the RhB degradation reached up to 0.1353 min−1, which was about 16.5 or 12.2 times that of bare BiOCOOH or Ag/AgCl. The PL characterization further verified that Ag/AgCl/BiOCOOH heterojunctions were endowed with the effective separation of photogenerated carriers. The excellent photocatalytic ability of Ag/AgCl/BiOCOOH could be credited to the synergistic interactions between Ag/AgCl and BiOCOOH, which not only substantially widened the light absorption, but also evidently hindered the charge recombination. The trapping experiments revealed that the dominant reactive species in RhB removal were h+, •OH, and •O2− species. In addition, Ag/AgCl/BiOCOOH was quite stable and easily recyclable after multiple cycles. The above results imply that the 3D flower-like Ag/AgCl/BiOCOOH ternary heterojunction photocatalyst holds promising prospects in treating industrial wastewater.
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Affiliation(s)
- Shijie Li
- Key Laboratory of key technical factors in Zhejiang seafood health hazards, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Bing Xue
- Key Laboratory of key technical factors in Zhejiang seafood health hazards, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China.
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Genying Wu
- Longquan Branch of Lishui Municipal Ecological Environment Bureau, Longquan 323700, China.
| | - Yanping Liu
- Key Laboratory of key technical factors in Zhejiang seafood health hazards, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China.
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Huiqiu Zhang
- Key Laboratory of key technical factors in Zhejiang seafood health hazards, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Deyun Ma
- School of Food and Pharmaceutical Engineering, Zhaoqing University, Zhaoqing 526061, China.
| | - Juncheng Zuo
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China.
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48
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Characterization and Correction of the Geometric Errors using a Confocal Microscope for Extended Topography Measurement, Part II: Experimental Study and Uncertainty Evaluation. ELECTRONICS 2019. [DOI: 10.3390/electronics8111217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper presents the experimental implementations of the mathematical models and algorithms developed in Part I. Two experiments are carried out. The first experiment determines the correction coefficients of the mathematical model. The dot grid target is measured, and the measurement data are processed by our developed and validated algorithms introduced in Part I. The values of the coefficients are indicated and analyzed. Uncertainties are evaluated using the Monte Carlo method. The second experiment measures a different area of the dot grid target. The measurement results are corrected according to the coefficients determined in the first experiment. The mean residual between the measured points and their corresponding certified values reduced 29.6% after the correction. The sum of squared errors reduced 47.7%. The methods and the algorithms for raw data processing, such as data partition, fittings of dots’ centers, K-means clustering, etc., are the same for the two experiments. The experimental results demonstrate that our method for the correction of the errors produced by the movement of the lateral stage of a confocal microscope is meaningful and practicable.
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Hou D, Li T, Chen X, He S, Dai J, Mofid SA, Hou D, Iddya A, Jassby D, Yang R, Hu L, Ren ZJ. Hydrophobic nanostructured wood membrane for thermally efficient distillation. SCIENCE ADVANCES 2019; 5:eaaw3203. [PMID: 31414047 PMCID: PMC6677554 DOI: 10.1126/sciadv.aaw3203] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/27/2019] [Indexed: 05/22/2023]
Abstract
Current membrane distillation (MD) is challenged by the inefficiency of water thermal separation from dissolved solutes, controlled by membrane porosity and thermal conductivity. Existing petroleum-derived polymeric membranes face major development barriers. Here, we demonstrate a first robust MD membrane directly fabricated from sustainable wood material. The hydrophobic nanowood membrane had high porosity (89 ± 3%) and hierarchical pore structure with a wide pore size distribution of crystalline cellulose nanofibrils and xylem vessels and lumina (channels) that facilitate water vapor transportation. The thermal conductivity was extremely low in the transverse direction, which reduces conductive heat transport. However, high thermal conductivity along the fiber enables efficient thermal dissipation along the axial direction. As a result, the membrane demonstrated excellent intrinsic vapor permeability (1.44 ± 0.09 kg m-1 K-1 s-1 Pa-1) and thermal efficiency (~70% at 60°C). The properties of thermal efficiency, water flux, scalability, and sustainability make nanowood highly desirable for MD applications.
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Affiliation(s)
- Dianxun Hou
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Tian Li
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Xi Chen
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Shuaiming He
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Jiaqi Dai
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Sohrab A. Mofid
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
- Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Deyin Hou
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Arpita Iddya
- Department of Civil and Environmental Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David Jassby
- Department of Civil and Environmental Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ronggui Yang
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
- Corresponding author. (L.H.); (Z.J.R.)
| | - Zhiyong Jason Ren
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544, USA
- Corresponding author. (L.H.); (Z.J.R.)
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Natan M, Gutman O, Segev D, Margel S, Banin E. Engineering Irrigation Drippers with Rechargeable N-Halamine Nanoparticles for Antifouling Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23584-23590. [PMID: 31252498 DOI: 10.1021/acsami.9b05353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The increased demand for water highlights the need to utilize reclaimed water of various types. In agriculture, for example, which is considered the largest consumer of freshwater, irrigation with treated wastewater can replace much of the need for freshwater. Wastewater is generally used for irrigation through drippers, releasing small amounts of water to the crops. The contaminants found in treated wastewater increase the accumulation of fouling on the drippers, ultimately culminating in blocking of water exit. Thus, there is a crucial need to develop novel approaches to limit biofilm formation on the dripper. Here, we describe the synthesis of N-halamine-derivatized cross-linked polymethacrylamide nanoparticles (NPs) by copolymerization of the monomer methacrylamide and the cross-linker monomer N, N-methylenebisacrylamide and their subsequent embedding in the polyethylene that is used to fabricate the drippers. The newly designed drip system was activated by chlorinating the incorporated NPs and then was fully characterized. The nanofunctionalized drippers were tested in the field, showing excellent antifouling activity for at least 5 months compared to the control. In addition, the inherent recharging capacity of the antifouling NPs constitutes yet another valuable advantage of the currently reported technology.
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Affiliation(s)
| | | | - Dekel Segev
- Netafim Ltd. , Kibbutz Magal 334500 , Israel
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