1
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Sasmal S, Chen L, Sarma PV, Vulpin OT, Simons CR, Wells KM, Spontak RJ, Boettcher SW. Materials descriptors for advanced water dissociation catalysts in bipolar membranes. NATURE MATERIALS 2024; 23:1421-1427. [PMID: 38951650 DOI: 10.1038/s41563-024-01943-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 06/05/2024] [Indexed: 07/03/2024]
Abstract
The voltage penalty driving water dissociation (WD) at high current density is a major obstacle in the commercialization of bipolar membrane (BPM) technology for energy devices. Here we show that three materials descriptors, that is, electrical conductivity, microscopic surface area and (nominal) surface-hydroxyl coverage, effectively control the kinetics of WD in BPMs. Using these descriptors and optimizing mass loading, we design new earth-abundant WD catalysts based on nanoparticle SnO2 synthesized at low temperature with high conductivity and hydroxyl coverage. These catalysts exhibit exceptional performance in a BPM electrolyser with low WD overvoltage (ηwd) of 100 ± 20 mV at 1.0 A cm-2. The new catalyst works equivalently well with hydrocarbon proton-exchange layers as it does with fluorocarbon-based Nafion, thus providing pathways to commercializing advanced BPMs for a broad array of electrolysis, fuel-cell and electrodialysis applications.
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Affiliation(s)
- Sayantan Sasmal
- Department of Chemistry & Biochemistry and the Oregon Center for Electrochemistry, University of Oregon, Eugene, OR, USA
| | - Lihaokun Chen
- Department of Chemistry & Biochemistry and the Oregon Center for Electrochemistry, University of Oregon, Eugene, OR, USA
- Department of Chemical & Biomolecular Engineering and Department of Chemistry, University of California, Berkeley, CA, USA
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Prasad V Sarma
- Department of Chemistry & Biochemistry and the Oregon Center for Electrochemistry, University of Oregon, Eugene, OR, USA
| | - Olivia T Vulpin
- Department of Chemistry & Biochemistry and the Oregon Center for Electrochemistry, University of Oregon, Eugene, OR, USA
| | - Casey R Simons
- Center for Materials Characterization in Oregon, University of Oregon, Eugene, OR, USA
| | - Kacie M Wells
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC, USA
| | - Richard J Spontak
- Departments of Chemical & Biomolecular Engineering and Materials Science & Engineering and Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC, USA
| | - Shannon W Boettcher
- Department of Chemistry & Biochemistry and the Oregon Center for Electrochemistry, University of Oregon, Eugene, OR, USA.
- Department of Chemical & Biomolecular Engineering and Department of Chemistry, University of California, Berkeley, CA, USA.
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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2
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Zhu M, He F, Feng L, Chi Y, Li YY, Tian B. Comparison of bipolar membrane electrodialysis, electrodialysis metathesis, and bipolar membrane electrodialysis multifunction for the conversion of waste Na 2SO 4: Process performance and economic analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122513. [PMID: 39303601 DOI: 10.1016/j.jenvman.2024.122513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 09/09/2024] [Accepted: 09/12/2024] [Indexed: 09/22/2024]
Abstract
To convert Na2SO4 into other high-value products (NaOH, H2SO4, and (NH4)2SO4), three types of cell configurations of electrodialysis (ED) were applied (three-compartment bipolar membrane ED (BMED), four-compartment ED metathesis (EDM) and five-compartment bipolar membrane ED multifunction (BMEDM)) and parameters such as average voltage variation, removal ratio of salt, product concentration, conversion rate, ion flux, and energy consumption were calculated and compared. The experimental results and calculations indicated that the overall performance of BMEDM was inferior to that of BMED and EDM. An industrial model was established, which indicated that the net profit from converting Na2SO4 using BMEDM was always higher than that from BMED and EDM. Based on the advantages of low investment (132 $) and energy cost (152 $/t Na2SO4), EDM was applicable to factories with a low output of Na2SO4 (production capacity <45%), whereas BMED (157.3 $/t Na2SO4) and BMED-5 (227.6 $/t Na2SO4) were applicable to factories with a high output of Na2SO4 (production capacity >45%) based on high net profits.
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Affiliation(s)
- Ming Zhu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Science, Beijing, 100085, China; Department of Frontier Science for Advanced Environment, Graduate School of Environmental Sciences, Tohoku University, 6-6-20Aoba, Aramaki-Aza, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
| | - Feiyu He
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Science, Beijing, 100085, China; Tianjin Key Laboratory of Water Quality Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, China
| | - Ling Feng
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Science, Beijing, 100085, China
| | - Yongzhi Chi
- Tianjin Key Laboratory of Water Quality Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, China
| | - Yu-You Li
- Department of Frontier Science for Advanced Environment, Graduate School of Environmental Sciences, Tohoku University, 6-6-20Aoba, Aramaki-Aza, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
| | - Binghui Tian
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Science, Beijing, 100085, China.
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3
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Zhang B, Yuan H, Liu Y, Deng Z, Douthwaite M, Dummer NF, Lewis RJ, Liu X, Luan S, Dong M, Wang T, Xu Q, Zhao Z, Liu H, Han B, Hutchings GJ. Ambient-pressure alkoxycarbonylation for sustainable synthesis of ester. Nat Commun 2024; 15:7837. [PMID: 39244602 PMCID: PMC11380687 DOI: 10.1038/s41467-024-52163-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 08/26/2024] [Indexed: 09/09/2024] Open
Abstract
Alkoxycarbonylation reactions are common in the chemical industry, yet process sustainability is limited by the inefficient utilization of CO. In this study, we address this issue and demonstrate that significant improvements can be achieved by adopting a heterogeneously catalyzed process, using a Ru/NbOx catalyst. The Ru/NbOx catalyst enables the direct synthesis of methyl propionate, a key industrial commodity, with over 98% selectivity from CO, ethylene and methanol, without any ligands or acid/base promoters. Under ambient CO pressure, a high CO utilization efficiency (336 mmolestermolCO-1h-1) is achieved. Mechanistic investigations reveal that CO undergoes a methoxycarbonyl (COOCH3) intermediate pathway, attacking the terminal carbon atom of alkene and yielding linear esters. The origins of prevailing linear regioselectivity in esters are revealed. The infrared spectroscopic feature of the key COOCH3 species is observed at 1750 cm-1 (C=O vibration) both experimentally and computationally. The broad substrate applicability of Ru/NbOx catalyst for ester production is demonstrated. This process offers a sustainable and efficient approach with high CO utilization and atom economy for the synthesis of esters.
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Affiliation(s)
- Bin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Haiyang Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, China
| | - Ye Liu
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, Hubei, China
| | - Zijie Deng
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Mark Douthwaite
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK.
| | - Nicholas F Dummer
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Richard J Lewis
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Xingwu Liu
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, 101400, Beijing, China
| | - Sen Luan
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Minghua Dong
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Tianjiao Wang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Qingling Xu
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China.
| | - Zhijuan Zhao
- Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Huizhen Liu
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China.
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Graham J Hutchings
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
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4
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Lomholdt WB, Leth Larsen MH, Valencia CN, Schiøtz J, Hansen TW. Interpretability of high-resolution transmission electron microscopy images. Ultramicroscopy 2024; 263:113997. [PMID: 38820993 DOI: 10.1016/j.ultramic.2024.113997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/15/2024] [Accepted: 05/25/2024] [Indexed: 06/02/2024]
Abstract
High-resolution electron microscopy is a well-suited tool for characterizing the nanoscale structure of materials. However, the interaction of the sample and the high-energy electrons of the beam can often have a detrimental impact on the sample structure. This effect can only be alleviated by decreasing the number of electrons to which the sample is exposed but will come at the cost of a decreased signal-to-noise ratio in the resulting image. Images with low signal to noise ratios are often challenging to interpret as parts of the sample with a low interaction with the electron beam are reproduced with very low contrast. Here we suggest simple measures as alternatives to the conventional signal-to-noise ratio and investigate how these can be used to predict the interpretability of the electron microscopy images. We test the models on a sample consisting of gold nanoparticles supported on a cerium dioxide substrate. The models are evaluated based on series of images acquired at varying electron dose.
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Affiliation(s)
| | | | | | - Jakob Schiøtz
- DTU Physics, Technical University of Denmark (DTU), DK-2800 Kgs. Lyngby, Denmark
| | - Thomas Willum Hansen
- DTU Nanolab, Technical University of Denmark (DTU), DK-2800 Kgs. Lyngby, Denmark.
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5
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Xie G, Guo W, Fang Z, Duan Z, Lang X, Liu D, Mei G, Zhai Y, Sun X, Lu X. Dual-Metal Sites Drive Tandem Electrocatalytic CO 2 to C 2+ Products. Angew Chem Int Ed Engl 2024:e202412568. [PMID: 39140424 DOI: 10.1002/anie.202412568] [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: 07/04/2024] [Revised: 08/11/2024] [Accepted: 08/13/2024] [Indexed: 08/15/2024]
Abstract
The electrochemical conversion of CO2 into valuable chemicals is a promising route for renowable energy storage and the mitigation of greenhouse gas emission, and production of multicarbon (C2+) products is highly desired. Here, we report a 1.4 %Pd-Cu@CuPz2 comprising of dispersive CuOx and PdO dual nanoclusters embedded in the MOF CuPz2 (Pz=Pyrazole), which achieves a high C2+ Faradaic efficiency (FEC2+) of 81.9 % and C2+ alcohol FE of 47.5 % with remarkable stability when using 0.1 M KCl aqueous solution as electrolyte in a typical H-cell. Particularly, the FE of alcohol is obviously improved on 1.4 %Pd-Cu@CuPz2 compared to Cu@CuPz2. Theoretical calculations have revealed that the enhanced interfacial electron transfer facilitates the adsorption of *CO intermediate and *CO-*CO dimerization on the Cu-Pd dual sites bridged by Cu nodes of CuPz2. Additionally, the oxophilicity of Pd can stabilize the key intermediate *CH2CHO and promote subsequent proton-coupled electron transfer more efficiently, confirming that the formation pathway is skew towards *C2H5OH. Consequently, the Cu-Pd dual sites play a synergistic tandem role in cooperatively improving the selectivity of alcohol and accelerating reductive conversion of CO2 to C2+.
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Affiliation(s)
- Guixian Xie
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Weiwei Guo
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Zijian Fang
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Zongxia Duan
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Xianzhen Lang
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Doudou Liu
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Guoliang Mei
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Yanling Zhai
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
| | - Xiaofu Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Xiaoquan Lu
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, 266071, Qingdao, China
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070, Lanzhou, China
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6
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Zhang G, Li Y, Zhao C, Gu J, Zhou G, Shi Y, Zhou Q, Xiao F, Fu WJ, Chen Q, Ji Q, Qu J, Liu H. Redox-neutral electrochemical decontamination of hypersaline wastewater with high technology readiness level. NATURE NANOTECHNOLOGY 2024; 19:1130-1140. [PMID: 38724611 DOI: 10.1038/s41565-024-01669-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 04/01/2024] [Indexed: 08/18/2024]
Abstract
Industrial hypersaline wastewaters contain diverse pollutants that harm the environment. Recovering clean water, alkali and acid from these wastewaters can promote circular economy and environmental protection. However, current electrochemical and advanced oxidation processes, which rely on hydroxyl radicals to degrade organic compounds, are inefficient and energy intensive. Here we report a flow-through redox-neutral electrochemical reactor (FRER) that effectively removes organic contaminants from hypersaline wastewaters via the chlorination-dehalogenation-hydroxylation route involving radical-radical cross-coupling. Bench-scale experiments demonstrate that the FRER achieves over 75% removal of total organic carbon across various compounds, and it maintains decontamination performance for over 360 h and continuously treats real hypersaline wastewaters for two months without corrosion. Integrating the FRER with electrodialysis reduces operating costs by 63.3% and CO2 emissions by 82.6% when compared with traditional multi-effect evaporation-crystallization techniques, placing our system at technology readiness levels of 7-8. The desalinated water, high-purity NaOH (>95%) and acid produced offset industrial production activities and thus support global sustainable development objectives.
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Affiliation(s)
- Gong Zhang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Yongqi Li
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
- School of Hydraulic and Hydropower Engineering, North China Electric Power University, Beijing, China
| | - Chenxuan Zhao
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, China
| | - Jiabao Gu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Gang Zhou
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, China
| | - Yanfeng Shi
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Qi Zhou
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Feng Xiao
- School of Hydraulic and Hydropower Engineering, North China Electric Power University, Beijing, China
| | - Wen-Jie Fu
- College of Environment and Resources, Guangxi Normal University, Guilin, China
| | - Qingbai Chen
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Qinghua Ji
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Jiuhui Qu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China.
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7
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Liu Y, Yi J, Wu P, Zhang J, Li X, Li J, Zhou L, Liu Y, Xu H, Chen E, Zhang H, Liang M, Liu P, Pan X, Lu Y. Wemics: A Single-Base Resolution Methylation Quantification Method for Enhanced Prediction of Epigenetic Regulation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308884. [PMID: 38544480 PMCID: PMC11151077 DOI: 10.1002/advs.202308884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 03/04/2024] [Indexed: 06/06/2024]
Abstract
DNA methylation, an epigenetic mechanism that alters gene expression without changing DNA sequence, is essential for organism development and key biological processes like genomic imprinting and X-chromosome inactivation. Despite tremendous efforts in DNA methylation research, accurate quantification of cytosine methylation remains a challenge. Here, a single-base methylation quantification approach is introduced by weighting methylation of consecutive CpG sites (Wemics) in genomic regions. Wemics quantification of DNA methylation better predicts its regulatory impact on gene transcription and identifies differentially methylated regions (DMRs) with more biological relevance. Most Wemics-quantified DMRs in lung cancer are epigenetically conserved and recurrently occurred in other primary cancers from The Cancer Genome Atlas (TCGA), and their aberrant alterations can serve as promising pan-cancer diagnostic markers. It is further revealed that these detected DMRs are enriched in transcription factor (TF) binding motifs, and methylation of these TF binding motifs and TF expression synergistically regulate target gene expression. Using Wemics on epigenomic-transcriptomic data from the large lung cancer cohort, a dozen novel genes with oncogenic potential are discovered that are upregulated by hypomethylation but overlooked by other quantification methods. These findings increase the understanding of the epigenetic mechanism by which DNA methylation regulates gene expression.
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Affiliation(s)
- Yi Liu
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
- Institute of BioinformaticsZhejiang UniversityHangzhou310058China
| | - Jiani Yi
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
| | - Pin Wu
- Department of Thoracic SurgeryThe Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhou310009China
| | - Jun Zhang
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
| | - Xufan Li
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
| | - Jia Li
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
| | - Liyuan Zhou
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
- Institute of BioinformaticsZhejiang UniversityHangzhou310058China
| | - Yong Liu
- Department of PhysiologyThe University of ArizonaTucsonAZ85721USA
| | - Haiming Xu
- Institute of BioinformaticsZhejiang UniversityHangzhou310058China
| | - Enguo Chen
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
| | - Honghe Zhang
- Department of PathologyResearch Unit of Intelligence Classification of Tumor Pathology and Precision TherapyChinese Academy of Medical SciencesZhejiang University School of MedicineHangzhou310058China
| | - Mingyu Liang
- Department of PhysiologyThe University of ArizonaTucsonAZ85721USA
| | - Pengyuan Liu
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang ProvinceDepartment of Respiratory Medicine, Department of Clinical LaboratorySir Run Run Shaw Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310016China
- Department of PhysiologyThe University of ArizonaTucsonAZ85721USA
- Cancer centerZhejiang UniversityHangzhou310058China
| | - Xiaoqing Pan
- Department of MathematicsShanghai Normal UniversityShanghai200233China
| | - Yan Lu
- Cancer centerZhejiang UniversityHangzhou310058China
- Zhejiang Provincial Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological DiseasesDepartment of Gynecologic OncologyWomen's Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhouZhejiang310029China
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8
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Meng X, Li J, Qu W, Wang W, Feng X, Wang J. Degradation of fluoride in groundwater by electrochemical fixed bed system with bauxite: performance and synergistic catalytic mechanism. RSC Adv 2024; 14:13711-13718. [PMID: 38681833 PMCID: PMC11044906 DOI: 10.1039/d4ra01359j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/17/2024] [Indexed: 05/01/2024] Open
Abstract
Fluoride pollution in water has garnered significant attention worldwide. The issue of fluoride removal remains challenging in areas not covered by municipal water systems. The industrial aluminum electrode and natural bauxite coordinated defluorination system (IE-BA) have been employed for fluoride removal. The experiment investigated the effects of pH, current density, and inter-electrode mineral layer thickness on the defluorination process of IE-BA. Additionally, the study examined the treatment efficiency of IE-BA for simulated water with varying F- concentrations and assessed its long-term performance. The results demonstrate that the defluorination efficiency can reach 98.4% after optimization. Moreover, irrespective of different fluoride concentrations, the defluorination rate exceeds 95.2%. After 72 hours of continuous operation, the defluorination rate reached 91.9%. The effluent exhibited weak alkalinity with a pH of around 8.0, and the voltage increased by 2.0 V compared to the initial moment. By analyzing the characterization properties of minerals and flocs, this study puts forward the possible defluorination mechanism of the IE-BA system. The efficacy of the IE-BA system in fluoride removal from water was ultimately confirmed, demonstrating its advantages in terms of defluorination ability under different initial conditions and resistance to complex interference. This study demonstrates that the IE-BA technology is a promising approach for defluorination.
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Affiliation(s)
- Xiangxu Meng
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
| | - Junfeng Li
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
- Key Laboratory of Cold and Arid Regions Eco-Hydraulic Engineering of Xinjiang Production & Construction Corps Shihezi 832000 Xinjiang PR China
| | - Wenying Qu
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
- Key Laboratory of Cold and Arid Regions Eco-Hydraulic Engineering of Xinjiang Production & Construction Corps Shihezi 832000 Xinjiang PR China
| | - Wenhuai Wang
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
- Key Laboratory of Cold and Arid Regions Eco-Hydraulic Engineering of Xinjiang Production & Construction Corps Shihezi 832000 Xinjiang PR China
| | - Xueting Feng
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
| | - Jiankang Wang
- College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China
- Key Laboratory of Cold and Arid Regions Eco-Hydraulic Engineering of Xinjiang Production & Construction Corps Shihezi 832000 Xinjiang PR China
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9
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Zhang Q, Zhang Y, Liu N, Sun X. Understanding of facial features in face perception: insights from deep convolutional neural networks. Front Comput Neurosci 2024; 18:1209082. [PMID: 38655070 PMCID: PMC11035738 DOI: 10.3389/fncom.2024.1209082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 03/18/2024] [Indexed: 04/26/2024] Open
Abstract
Introduction Face recognition has been a longstanding subject of interest in the fields of cognitive neuroscience and computer vision research. One key focus has been to understand the relative importance of different facial features in identifying individuals. Previous studies in humans have demonstrated the crucial role of eyebrows in face recognition, potentially even surpassing the importance of the eyes. However, eyebrows are not only vital for face recognition but also play a significant role in recognizing facial expressions and intentions, which might occur simultaneously and influence the face recognition process. Methods To address these challenges, our current study aimed to leverage the power of deep convolutional neural networks (DCNNs), an artificial face recognition system, which can be specifically tailored for face recognition tasks. In this study, we investigated the relative importance of various facial features in face recognition by selectively blocking feature information from the input to the DCNN. Additionally, we conducted experiments in which we systematically blurred the information related to eyebrows to varying degrees. Results Our findings aligned with previous human research, revealing that eyebrows are the most critical feature for face recognition, followed by eyes, mouth, and nose, in that order. The results demonstrated that the presence of eyebrows was more crucial than their specific high-frequency details, such as edges and textures, compared to other facial features, where the details also played a significant role. Furthermore, our results revealed that, unlike other facial features, the activation map indicated that the significance of eyebrows areas could not be readily adjusted to compensate for the absence of eyebrow information. This finding explains why masking eyebrows led to more significant deficits in face recognition performance. Additionally, we observed a synergistic relationship among facial features, providing evidence for holistic processing of faces within the DCNN. Discussion Overall, our study sheds light on the underlying mechanisms of face recognition and underscores the potential of using DCNNs as valuable tools for further exploration in this field.
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Affiliation(s)
- Qianqian Zhang
- MoE Key Laboratory of Brain-inspired Intelligent Perception and Cognition, University of Science and Technology of China, Hefei, China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
| | - Yueyi Zhang
- MoE Key Laboratory of Brain-inspired Intelligent Perception and Cognition, University of Science and Technology of China, Hefei, China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
| | - Ning Liu
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
- State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoyan Sun
- MoE Key Laboratory of Brain-inspired Intelligent Perception and Cognition, University of Science and Technology of China, Hefei, China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
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10
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Adisasmito S, Khoiruddin K, Sutrisna PD, Wenten IG, Siagian UWR. Bipolar Membrane Seawater Splitting for Hydrogen Production: A Review. ACS OMEGA 2024; 9:14704-14727. [PMID: 38585051 PMCID: PMC10993265 DOI: 10.1021/acsomega.3c09205] [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: 11/18/2023] [Revised: 02/26/2024] [Accepted: 03/12/2024] [Indexed: 04/09/2024]
Abstract
The growing demand for clean energy has spurred the quest for sustainable alternatives to fossil fuels. Hydrogen has emerged as a promising candidate with its exceptional heating value and zero emissions upon combustion. However, conventional hydrogen production methods contribute to CO2 emissions, necessitating environmentally friendly alternatives. With its vast potential, seawater has garnered attention as a valuable resource for hydrogen production, especially in arid coastal regions with surplus renewable energy. Direct seawater electrolysis presents a viable option, although it faces challenges such as corrosion, competing reactions, and the presence of various impurities. To enhance the seawater electrolysis efficiency and overcome these challenges, researchers have turned to bipolar membranes (BPMs). These membranes create two distinct pH environments and selectively facilitate water dissociation by allowing the passage of protons and hydroxide ions, while acting as a barrier to cations and anions. Moreover, the presence of catalysts at the BPM junction or interface can further accelerate water dissociation. Alongside the thermodynamic potential, the efficiency of the system is significantly influenced by the water dissociation potential of BPMs. By exploiting these unique properties, BPMs offer a promising solution to improve the overall efficiency of seawater electrolysis processes. This paper reviews BPM electrolysis, including the water dissociation mechanism, recent advancements in BPM synthesis, and the challenges encountered in seawater electrolysis. Furthermore, it explores promising strategies to optimize the water dissociation reaction in BPMs, paving the way for sustainable hydrogen production from seawater.
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Affiliation(s)
- Sanggono Adisasmito
- Department
of Chemical Engineering, Institut Teknologi
Bandung (ITB), Jalan
Ganesa No. 10, Bandung 40132, Indonesia
| | - Khoiruddin Khoiruddin
- Department
of Chemical Engineering, Institut Teknologi
Bandung (ITB), Jalan
Ganesa No. 10, Bandung 40132, Indonesia
| | - Putu D. Sutrisna
- Department
of Chemical Engineering, Universitas Surabaya
(UBAYA), Jalan Raya Kalirungkut (Tenggilis), Surabaya 60293, Indonesia
| | - I Gede Wenten
- Department
of Chemical Engineering, Institut Teknologi
Bandung (ITB), Jalan
Ganesa No. 10, Bandung 40132, Indonesia
| | - Utjok W. R. Siagian
- Department
of Petroleum Engineering, Institut Teknologi
Bandung (ITB), Jalan Ganesa No. 10, Bandung 40132, Indonesia
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11
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Xu W, Yan Z, Xiong K, Kong J, Song W, Li D, Cheng Q, Zhao Z, Liang X. Ab initio study of the topological itinerant transport properties observed between excited edge states in a 2D compound with the Mn 15B 16Ni composition. Phys Chem Chem Phys 2023; 25:32387-32392. [PMID: 37997152 DOI: 10.1039/d3cp03837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
We theoretically demonstrate how the competition between band inversion and spin-orbit coupling (SOC) results in the nontrivial topology of band evolution, using two-dimensional (2D) Mn16B16 as a matrix. This study utilizes the ab initio method with the generalized gradient approximation (GGA+U scheme) and Wannier functions to investigate the topological and transport properties of the Ni-doped structure. The Ni atom induces dynamical antilocalization, which appears due to the phase accumulation between time-reversed fermion loops. A key observation is that when band inversion dominates over SOC, "twin" Weyl cones appear in the band structure, in which the Weyl cones caused by the large Berry curvature coupling with the net magnetization lead to the significantly enhanced anomalous Hall conductivity (AHC). Interestingly, the nested small polaron and energy band inversion coexist with SOC. An analysis of the projected energy band shows that the doped Ni atom induces a strong spin wave for both spin up and spin down.
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Affiliation(s)
- Wuyue Xu
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Zhengxin Yan
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Kezhao Xiong
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Juntao Kong
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Wei Song
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Dongxin Li
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Qian Cheng
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Zehua Zhao
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
| | - Xingkun Liang
- College of Science, Xi'an University of Science and Technology, Xi'an 710054, China.
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12
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Kubiak A, Voronkina A, Pajewska-Szmyt M, Kotula M, Leśniewski B, Ereskovsky A, Heimler K, Rogoll A, Vogt C, Rahimi P, Falahi S, Galli R, Langer E, Förste M, Charitos A, Joseph Y, Ehrlich H, Jesionowski T. Creation of a 3D Goethite-Spongin Composite Using an Extreme Biomimetics Approach. Biomimetics (Basel) 2023; 8:533. [PMID: 37999174 PMCID: PMC10668986 DOI: 10.3390/biomimetics8070533] [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: 10/11/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023] Open
Abstract
The structural biopolymer spongin in the form of a 3D scaffold resembles in shape and size numerous species of industrially useful marine keratosan demosponges. Due to the large-scale aquaculture of these sponges worldwide, it represents a unique renewable source of biological material, which has already been successfully applied in biomedicine and bioinspired materials science. In the present study, spongin from the demosponge Hippospongia communis was used as a microporous template for the development of a new 3D composite containing goethite [α-FeO(OH)]. For this purpose, an extreme biomimetic technique using iron powder, crystalline iodine, and fibrous spongin was applied under laboratory conditions for the first time. The product was characterized using SEM and digital light microscopy, infrared and Raman spectroscopy, XRD, thermogravimetry (TG/DTG), and confocal micro X-ray fluorescence spectroscopy (CMXRF). A potential application of the obtained goethite-spongin composite in the electrochemical sensing of dopamine (DA) in human urine samples was investigated, with satisfactory recoveries (96% to 116%) being obtained.
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Affiliation(s)
- Anita Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Alona Voronkina
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsya, Pyrogov Street 56, 21018 Vinnytsia, Ukraine
| | - Martyna Pajewska-Szmyt
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Martyna Kotula
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Bartosz Leśniewski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Alexander Ereskovsky
- IMBE, CNRS, IRD, Aix Marseille University, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France;
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Parvaneh Rahimi
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Sedigheh Falahi
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Roberta Galli
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine Carl Gustav Carus, TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany;
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, Nöthnitzer Str. 64, 01187 Dresden, Germany
| | - Maik Förste
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, 09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Alexandros Charitos
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, 09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Yvonne Joseph
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Hermann Ehrlich
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Teofil Jesionowski
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
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13
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Jeong S, Ohto T, Nishiuchi T, Nagata Y, Fujita J, Ito Y. Suppression of Methanol and Formate Crossover through Sulfanilic-Functionalized Holey Graphene as Proton Exchange Membranes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304082. [PMID: 37688335 PMCID: PMC10625063 DOI: 10.1002/advs.202304082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/04/2023] [Indexed: 09/10/2023]
Abstract
Proton exchange membranes with high proton conductivity and low crossover of fuel molecules are required to realize advanced fuel-cell technology. The selective transportation of protons, which occurs by blocking the transportation of fuel molecules across a proton exchange membrane, is crucial to suppress crossover while maintaining a high proton conductivity. In this study, a simple yet powerful method is proposed for optimizing the crossover-conductivity relationship by pasting sulfanilic-functionalized holey graphenes onto a Nafion membrane. The results show that the sulfanilic-functionalized holey graphenes supported by the membrane suppresses the crossover by 89% in methanol and 80% in formate compared with that in the self-assembled Nafion membrane; an ≈60% reduction is observed in the proton conductivity. This method exhibits the potential for application in advanced fuel cells that use methanol and formic acid as chemical fuels to achieve high energy efficiency.
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Affiliation(s)
- Samuel Jeong
- Institute of Applied PhysicsGraduate School of Pure and Applied SciencesUniversity of Tsukuba1‐1‐1 TennodaiTsukubaIbaraki305‐8571Japan
| | - Tatsuhiko Ohto
- Department of Materials Design Innovation EngineeringNagoya UniversityFuro‐choChikusa‐kuAichi464‐8603Japan
- Graduate School of Engineering ScienceOsaka University1‐3 MachikaneyamaToyonakaOsaka560‐8531Japan
| | - Tomohiko Nishiuchi
- Department of ChemistryGraduate School of ScienceOsaka University1‐1 MachikaneyamaToyonakaOsaka560‐0043Japan
| | - Yuki Nagata
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
| | - Jun‐ichi Fujita
- Institute of Applied PhysicsGraduate School of Pure and Applied SciencesUniversity of Tsukuba1‐1‐1 TennodaiTsukubaIbaraki305‐8571Japan
| | - Yoshikazu Ito
- Institute of Applied PhysicsGraduate School of Pure and Applied SciencesUniversity of Tsukuba1‐1‐1 TennodaiTsukubaIbaraki305‐8571Japan
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14
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Al-Dhubhani E, Tedesco M, de Vos WM, Saakes M. Combined Electrospinning-Electrospraying for High-Performance Bipolar Membranes with Incorporated MCM-41 as Water Dissociation Catalysts. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45745-45755. [PMID: 37729586 PMCID: PMC10561145 DOI: 10.1021/acsami.3c06826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023]
Abstract
Electrospinning has been demonstrated as a very promising method to create bipolar membranes (BPMs), especially as it allows three-dimensional (3D) junctions of entangled anion exchange and cation exchange nanofibers. These newly developed BPMs are relevant to demanding applications, including acid and base production, fuel cells, flow batteries, ammonia removal, concentration of carbon dioxide, and hydrogen generation. However, these applications require the introduction of catalysts into the BPM to allow accelerated water dissociation, and this remains a challenge. Here, we demonstrate a versatile strategy to produce very efficient BPMs through a combined electrospinning-electrospraying approach. Moreover, this work applies the newly investigated water dissociation catalyst of nanostructured silica MCM-41. Several BPMs were produced by electrospraying MCM-41 nanoparticles into the layers directly adjacent to the main BPM 3D junction. BPMs with various loadings of MCM-41 nanoparticles and BPMs with different catalyst positions relative to the junction were investigated. The membranes were carefully characterized for their structure and performance. Interestingly, the water dissociation performance of BPMs showed a clear optimal MCM-41 loading where the performance outpaced that of a commercial BPM, recording a transmembrane voltage of approximately 1.11 V at 1000 A/m2. Such an excellent performance is very relevant to fuel cell and flow battery applications, but our results also shed light on the exact function of the catalyst in this mode of operation. Overall, we demonstrate clearly that introducing a novel BPM architecture through a novel hybrid electrospinning-electrospraying method allows the uptake of promising new catalysts (i.e., MCM-41) and the production of very relevant BPMs.
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Affiliation(s)
- Emad Al-Dhubhani
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
- Membrane
Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Michele Tedesco
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Wiebe M. de Vos
- Membrane
Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Michel Saakes
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
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15
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Xu Z, Wan L, Liao Y, Pang M, Xu Q, Wang P, Wang B. Continuous ammonia electrosynthesis using physically interlocked bipolar membrane at 1000 mA cm -2. Nat Commun 2023; 14:1619. [PMID: 36959179 PMCID: PMC10036611 DOI: 10.1038/s41467-023-37273-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/09/2023] [Indexed: 03/25/2023] Open
Abstract
Electrosynthesis of ammonia from nitrate reduction receives extensive attention recently for its relatively mild conditions and clean energy requirements, while most existed electrochemical strategies can only deliver a low yield rate and short duration for the lack of stable ion exchange membranes at high current density. Here, a bipolar membrane nitrate reduction process is proposed to achieve ionic balance, and increasing water dissociation sites is delivered by constructing a three-dimensional physically interlocked interface for the bipolar membrane. This design simultaneously boosts ionic transfer and interfacial stability compared to traditional ones, successfully reducing transmembrane voltage to 1.13 V at up to current density of 1000 mA cm-2. By combining a Co three-dimensional nanoarray cathode designed for large current and low concentration utilizations, a continuous and high yield bipolar membrane reactor for NH3 electrosynthesis realized a stable electrolysis at 1000 mA cm-2 for over 100 h, Faradaic efficiency of 86.2% and maximum yield rate of 68.4 mg h-1 cm-2 with merely 2000 ppm NO3- alkaline electrolyte. These results show promising potential for artificial nitrogen cycling in the near future.
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Affiliation(s)
- Ziang Xu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Lei Wan
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Yiwen Liao
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Maobin Pang
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Qin Xu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Peican Wang
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Baoguo Wang
- Department of Chemical Engineering, Tsinghua University, Beijing, China.
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16
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He J, Zhou R, Dong Z, Yan J, Ma X, Liu W, Sun L, Li C, Yan H, Wang Y, Xu T. Bipolar Membrane Electrodialysis for Cleaner Production of Diprotic Malic Acid: Separation Mechanism and Performance Evaluation. MEMBRANES 2023; 13:197. [PMID: 36837700 PMCID: PMC9961052 DOI: 10.3390/membranes13020197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/19/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Bipolar membrane electrodialysis (BMED) is a promising process for the cleaner production of organic acid. In this study, the separation mechanism of BMED with different cell configurations, i.e., BP-A, BP-A-C, and BP-C (BP, bipolar membrane; A, anion exchange membrane; C, cation exchange membrane), to produce diprotic malic acid from sodium malate was compared in consideration of the conversion ratio, current efficiency and energy consumption. Additionally, the current density and feed concentration were investigated to optimize the BMED performance. Results indicate that the conversion ratio follows BP-C > BP-A-C > BP-A, the current efficiency follows BP-A-C > BP-C > BP-A, and the energy consumption follows BP-C < BP-A-C < BP-A. For the optimized BP-C configuration, the current density was optimized as 40 mA/cm2 in consideration of low total process cost; high feed concentration (0.5-1.0 mol/L) is more feasible to produce diprotic malic acid due to the high conversion ratio (73.4-76.2%), high current efficiency (88.6-90.7%), low energy consumption (0.66-0.71 kWh/kg) and low process cost (0.58-0.59 USD/kg). Moreover, a high concentration of by-product NaOH (1.3497 mol/L) can be directly recycled to the upstream process. Therefore, BMED is a cleaner, high-efficient, low energy consumption and environmentally friendly process to produce diprotic malic acid.
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Affiliation(s)
- Jinfeng He
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Rong Zhou
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Zhiguo Dong
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Junying Yan
- Anhui Provincial Engineering Laboratory for Functional Membranes, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Xixi Ma
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Wenlong Liu
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Li Sun
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei 230012, China
| | - Chuanrun Li
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei 230012, China
| | - Haiyang Yan
- School of Pharmacy, Pharmaceutical Engineering Technology Research Center, Anhui University of Chinese Medicine, Hefei 230012, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei 230012, China
| | - Yaoming Wang
- Anhui Provincial Engineering Laboratory for Functional Membranes, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Tongwen Xu
- Anhui Provincial Engineering Laboratory for Functional Membranes, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
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Xiao J, Li L, You H, Zhou S, Feng Y, You R. Silk nanofibrils/chitosan composite fibers with enhanced mechanical properties. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jiahui Xiao
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Liang Li
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Haining You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Shunshun Zhou
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Yanfei Feng
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Renchuan You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
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18
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Song HB, Kang MS. Bipolar Membranes Containing Iron-Based Catalysts for Efficient Water-Splitting Electrodialysis. MEMBRANES 2022; 12:1201. [PMID: 36557107 PMCID: PMC9786226 DOI: 10.3390/membranes12121201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Water-splitting electrodialysis (WSED) process using bipolar membranes (BPMs) is attracting attention as an eco-friendly and efficient electro-membrane process that can produce acids and bases from salt solutions. BPMs are a key component of the WSED process and should satisfy the requirements of high water-splitting capability, physicochemical stability, low membrane cost, etc. The water-splitting performance of BPMs can be determined by the catalytic materials introduced at the bipolar junction. Therefore, in this study, several kinds of iron metal compounds (i.e., Fe(OH)3, Fe(OH)3@Fe3O4, Fe(OH)2EDTA, and Fe3O4@ZIF-8) were prepared and the catalytic activities for water-splitting reactions in BPMs were systematically analyzed. In addition, the pore-filling method was applied to fabricate low-cost/high-performance BPMs, and the 50 μm-thick BPMs prepared on the basis of PE porous support showed several times superior toughness compared to Fumatech FBM membrane. Through various electrochemical analyses, it was proven that Fe(OH)2EDTA has the highest catalytic activity for water-splitting reactions and the best physical and electrochemical stabilities among the considered metal compounds. This is the result of stable complex formation between Fe and EDTA ligand, increase in hydrophilicity, and catalytic water-splitting reactions by weak acid and base groups included in EDTA as well as iron hydroxide. It was also confirmed that the hydrophilicity of the catalyst materials introduced to the bipolar junction plays a critical role in the water-splitting reactions of BPM.
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Li X, He F, Wang Z, Xing B. Roadmap of environmental health research on emerging contaminants: Inspiration from the studies on engineered nanomaterials. ECO-ENVIRONMENT & HEALTH (ONLINE) 2022; 1:181-197. [PMID: 38075596 PMCID: PMC10702922 DOI: 10.1016/j.eehl.2022.10.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/04/2022] [Accepted: 10/11/2022] [Indexed: 01/25/2024]
Abstract
Research on the environmental health of emerging contaminants is critical to understand their risks before causing severe harm. However, the low environmental concentrations, complex behaviors, and toxicology of emerging contaminants present enormous challenges for researchers. Here, we reviewed the research on the environmental health of engineered nanomaterials (ENMs), one of the typical emerging contaminants, to enlighten pathways for future research on emerging contaminants at their initial exploratory stage. To date, some developed pretreatment methods and detection technologies have been established for the determination of ENMs in natural environments. The mechanisms underlying the transfer and transformation of ENMs have been systematically explored in laboratory studies. The mechanisms of ENMs-induced toxicity have also been preliminarily clarified at genetic, cellular, individual, and short food chain levels, providing not only a theoretical basis for revealing the risk change and environmental health effects of ENMs in natural environments but also a methodological guidance for studying environmental health of other emerging contaminants. Nonetheless, due to the interaction of multiple environmental factors and the high diversity of organisms in natural environments, health effects observed in laboratory studies likely differ from those in natural environments. We propose a holistic approach and mesocosmic model ecosystems to systematically carry out environmental health research on emerging contaminants, obtaining data that determine the objectivity and accuracy of risk assessment.
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Affiliation(s)
- Xiaona Li
- Institute of Environmental Processes and Pollution Control, and School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China
- Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi 214122, China
| | - Feng He
- Institute of Environmental Processes and Pollution Control, and School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China
- Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi 214122, China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China
- Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi 214122, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States
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Zhao D, Xu J, Sun Y, Li M, Zhong G, Hu X, Sun J, Li X, Su H, Li M, Zhang Z, Zhang Y, Zhao L, Zheng C, Sun X. Composition and Structure Progress of the Catalytic Interface Layer for Bipolar Membrane. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2874. [PMID: 36014740 PMCID: PMC9416193 DOI: 10.3390/nano12162874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Bipolar membranes, a new type of composite ion exchange membrane, contain an anion exchange layer, a cation exchange layer and an interface layer. The interface layer or junction is the connection between the anion and cation exchange layers. Water is dissociated into protons and hydroxide ions at the junction, which provides solutions to many challenges in the chemical, environmental and energy fields. By combining bipolar membranes with electrodialysis technology, acids and bases could be produced with low cost and high efficiency. The interface layer or junction of bipolar membranes (BPMs) is the connection between the anion and cation exchange layers, which the membrane and interface layer modification are vital for improving the performance of BPMs. This paper reviews the effect of modification of a bipolar membrane interface layer on water dissociation efficiency and voltage across the membrane, which divides into three aspects: organic materials, inorganic materials and newly designed materials with multiple components. The structure of the interface layer is also introduced on the performance of bipolar membranes. In addition, the remainder of this review discusses the challenges and opportunities for the development of more efficient, sustainable and practical bipolar membranes.
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Affiliation(s)
- Di Zhao
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Jinyun Xu
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Yu Sun
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Minjing Li
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Guoqiang Zhong
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Xudong Hu
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Jiefang Sun
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Xiaoyun Li
- Advanced Materials Research Laboratory, CNOOC Tianjin Chemical Research and Design Institute, Tianjin 300131, China
| | - Han Su
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Ming Li
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Ziqi Zhang
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Yu Zhang
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Liping Zhao
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Chunming Zheng
- School of Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, Tiangong University, Tianjin 300387, China
| | - Xiaohong Sun
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
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Powers D, Mondal AN, Yang Z, Wycisk R, Kreidler E, Pintauro PN. Freestanding Bipolar Membranes with an Electrospun Junction for High Current Density Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36092-36104. [PMID: 35904491 DOI: 10.1021/acsami.2c07680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Freestanding bipolar membranes (BPMs) with an extended-area water splitting junction were fabricated utilizing electrospinning. The junction layer was composed of a mixed fiber mat that was made by concurrently electrospinning sulfonated poly(ether ether ketone) (SPEEK) and quaternized poly(phenylene oxide) (QPPO), with water splitting catalyst nanoparticles intermittently deposited between the fibers. The mat was sandwiched between solution cast SPEEK and QPPO films and hot-pressed to form a dense trilayer BPM with an extended-area junction of finite thickness, composed of QPPO nanofibers embedded in a SPEEK matrix with the catalyst nanoparticles interspaced between the two polymers. The composition, ion-exchange capacity, and catalyst type/loading in the junction were varied, and the water splitting characteristics of the membranes were assessed. The best BPMs fabricated in this work employed a graphene oxide catalyst and exhibited a low trans-membrane voltage drop of about 0.82 V at 1000 mA/cm2 in water splitting experiments with 0.5 M Na2SO4 and stable water splitting operation for 60 h at 800 mA/cm2.
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Affiliation(s)
- Devon Powers
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Abhishek N Mondal
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Zezhou Yang
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ryszard Wycisk
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Eric Kreidler
- Honda R&D Americas, LLC, Raymond, Ohio 43067, United States
| | - Peter N Pintauro
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
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22
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Ge Z, Shehzad MA, Yang X, Li G, Wang H, Yu W, Liang X, Ge X, Wu L, Xu T. High-performance bipolar membrane for electrochemical water electrolysis. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Potential of montmorillonite nanoclay as water dissociation catalyst at the interface of bipolar membrane. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gao F, Li X, Shi W, Wang Z. Highly Selective Recovery of Phosphorus from Wastewater via Capacitive Deionization Enabled by Ferrocene-polyaniline-Functionalized Carbon Nanotube Electrodes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31962-31972. [PMID: 35802538 DOI: 10.1021/acsami.2c06248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
While capacitive deionization (CDI) is a promising technology for the recovery of nutrients from wastewater, a selective recovery of phosphate from the wastewater containing high concentrations of competing ions is still a huge challenge. Herein, we reported a ferrocene-polyaniline-functionalized carbon nanotube (Fc-PANI/CNT) electrode prepared through amidation reaction and chemical oxidation polymerization, aiming for a highly selective recovery of phosphorus from wastewater. The Fc-PANI/CNT electrode with a unique structure and high conductivity could efficiently adsorb phosphate ions from complex synthetic wastewater with a nearly 100% selectivity, mainly because the integration of ferrocene and an amide bond in Fc-PANI resulted in an enhanced charge transfer (Faradaic reactions) and a strong hydrogen bonding interaction with phosphate ions in its oxidized state. Density functional theory calculations showed that the binding energies of the oxidized Fc-PANI with HPO42- and H2PO4- were much greater than those of the oxidized Fc-PANI with other competing anions. The affinity of Fc-PANI/CNTs with phosphate can be controlled electrochemically based on the synergetic effects of Faradaic reactions and hydrogen bonding, enabling a selective recovery of phosphate through charging/discharging cycles. The phosphate adsorption capacity reached up to 35 mg PO43- g-1 in a NaCl/Na2SO4/NaNO3/NaH2PO4 complex mixture at 1.2 V, outperforming most of the other reported CDI systems. The Fc-PANI/CNT electrode also exhibited a decent regeneration ability and durability during repeated CDI tests, demonstrating a great potential for the application of selective recovery and enrichment of phosphate from wastewater.
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Affiliation(s)
- Fei Gao
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xuesong Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Wei Shi
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Zhiwei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Hao J, Zeng H, Li X, Zhang Y, Lei Y, Sheng G, Zhao X. Nitrogen and phosphorous recycling from human urine by household electrochemical fixed bed in sparsely populated regions. WATER RESEARCH 2022; 218:118467. [PMID: 35525028 DOI: 10.1016/j.watres.2022.118467] [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: 12/28/2021] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Decentralized treatment of human urine in sparsely populated regions could avoid the problem of sewage collection in traditionally centralized treatment schemes and simultaneously utilize the recovered N/P fertilizer in-situ to nurture gardens. Herein, an integrated electrochemical fixed bed packed with divided magnesite and carbon zones was constructed for the pretreatment of human urine, followed by the recovery of 95.0% NH4+ and 85.8% PO43- via struvite precipitation and NH3 volatilization as well as the on-site employment of the produced struvite as fertilizer. In the process, the acid/base zones created by electrochemical water splitting dissolved the magnesite filler as the Mg2+ source of struvite, further creating an ideal pH environment for struvite precipitation and NH3 volatilization in the effluent. Without the need to control solution pH by chemical addition, the system can resist impacts from changes in water quality by adjustment of the current density and flow rate, indicating its great potential for automatic operation. Life cycle assessment indicated that the on-site employment of produced struvite avoids the long-distance fertilizer transportation required for fertilization, thus reducing carbon emission by a hundred million tons per year if the household facility is driven by clean electricity.
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Affiliation(s)
- Jingwei Hao
- 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 100085, China
| | - Huabin Zeng
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Mikkeli, 50130, Finland
| | - Xuewei Li
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
| | - Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet 115, Kongens Lyngby 2800, Denmark
| | - Yang Lei
- School of Environmental Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Guoping Sheng
- Department of Environmental Science and Engineering, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China
| | - Xu Zhao
- 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 100085, China.
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26
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A mathematical model of the external circuits in a bipolar membrane electrodialysis stack: Leakage currents and Joule heating effect. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Zhang H, Ma J, Wang S, Ji J, Zeng Z, Shen Z, Du Y, Yan CH. Novel Cerium-Based Sulfide Nano-Photocatalyst for Highly Efficient CO 2 Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201332. [PMID: 35451152 DOI: 10.1002/smll.202201332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/31/2022] [Indexed: 06/14/2023]
Abstract
To address the environmental crisis caused by excessive emissions of CO2 , the development of effective photocatalysts for the conversion of CO2 into chemicals has emerged as one of the most promising strategies. Herein, beyond those well-studied materials, a rare-earth sulfide-based nanocrystal NaCeS2 is fabricated and investigated for efficient and selective conversion of CO2 into CO, where the role of Ce ions is crucial. Firstly, the hybridization of Ce 4f and Ce 5d orbitals contributes to the photoresponsive band structure of NaCeS2 . Secondly, due to the charge rearrangement supplied by the incompletely filled 4f orbitals of Ce ions, NaCeS2 exhibits excellent charge separation efficiency and CO2 adsorption affinity, reducing the energy barrier for the conversion from CO2 to CO. Moreover, a NaCeS2 -MoS2 heterostructure is also designed to further boost the electron transfer from the Mo site to the Ce site, which results in an improvement of the catalytic reduction yield from 7.24 to 23.42 µmol g-1 within 9 h (both better than TiO2 controls). This work offers a platform for the development of rare-earth-based photocatalysts for CO2 conversion.
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Affiliation(s)
- Hao Zhang
- Institute of New Catalytic Materials Science, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, P. R. China
| | - Jiamin Ma
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Siyuan Wang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Jixiang Ji
- Institute of New Catalytic Materials Science, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, P. R. China
| | - Zhichao Zeng
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Zhurui Shen
- Institute of New Catalytic Materials Science, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, P. R. China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Chun-Hua Yan
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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Yan H, Peng K, Yan J, Jiang C, Wang Y, Feng H, Yang Z, Wu L, Xu T. Bipolar membrane-assisted reverse electrodialysis for high power density energy conversion via acid-base neutralization. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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