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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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Ashraf S, Liu Y, Wei H, Shen R, Zhang H, Wu X, Mehdi S, Liu T, Li B. Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303031. [PMID: 37356067 DOI: 10.1002/smll.202303031] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/22/2023] [Indexed: 06/27/2023]
Abstract
Bimetallic Nanoalloy catalysts have diverse uses in clean energy, sensing, catalysis, biomedicine, and energy storage, with some supported and unsupported catalysts. Conventional synthetic methods for producing bimetallic alloy nanoparticles often produce unalloyed and bulky particles that do not exhibit desired characteristics. Alloys, when prepared with advanced nanoscale methods, give higher surface area, activity, and selectivity than individual metals due to changes in their electronic properties and reduced size. This review demonstrates the synthesis methods and principles to produce and characterize highly dispersed, well-alloyed bimetallic nanoalloy particles in relatively simple, effective, and generalized approaches and the overall existence of conventional synthetic methods with modifications to prepare bimetallic alloy catalysts. The basic concepts and mechanistic understanding are represented with purposely selected examples. Herein, the enthralling properties with widespread applications of nanoalloy catalysts in heterogeneous catalysis are also presented, especially for Hydrogen Evolution Reaction (HER), Oxidation Reduction Reaction (ORR), Oxygen Evolution Reaction (OER), and alcohol oxidation with a particular focus on Pt and Pd-based bimetallic nanoalloys and their numerous fields of applications. The high entropy alloy is described as a complicated subject with an emphasis on laser-based green synthesis of nanoparticles and, in conclusion, the forecasts and contemporary challenges for the controlled synthesis of nanoalloys are addressed.
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Affiliation(s)
- Saima Ashraf
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Yanyan Liu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Science, Henan Agricultural University, 63 Nongye Road, Zhengzhou, 450002, P. R. China
| | - Huijuan Wei
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Ruofan Shen
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Huanhuan Zhang
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Xianli Wu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Sehrish Mehdi
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Tao Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Baojun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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3
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Underwood TM, Robinson RS. Adducing Knowledge Capabilities of Instrumental Techniques Through the Exploration of Heterostructures' Modification Methods. Chemphyschem 2022; 23:e202200241. [PMID: 35965256 PMCID: PMC9804862 DOI: 10.1002/cphc.202200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/25/2022] [Indexed: 01/09/2023]
Abstract
The ongoing evolution of technology has facilitated the global research community to rapidly escalate the constant development of novel advancements in science. At the forefront of such achievements in the field of photocatalysis is the utilisation, and in oftentimes, the adaptation of modern instrumentation to understand photo-physical properties of complex heterostructures. For example, coupling in-situ X-ray Raman scattering spectroscopy for real-time degradation of catalytic materials.
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Affiliation(s)
- Timothy M. Underwood
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
| | - Ross S. Robinson
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
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4
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Zhao J, Wang J, Brock AJ, Zhu H. Plasmonic heterogeneous catalysis for organic transformations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Solvent as photoreductant for dehalogenation of α-haloketones under catalyst-free conditions. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Su H, Yu X, Wang W, Wang L, Tang H, Liu Q. A 2D bimetallic Ni-Co hydroxide monolayer cocatalyst for boosting photocatalytic H 2 evolution. Chem Commun (Camb) 2022; 58:6180-6183. [PMID: 35485577 DOI: 10.1039/d2cc01557a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Here, we report two-dimensional (2D) Ni-Co hydroxide monolayers (NiCo-HMs) as a highly active cocatalyst for enhancing the photocatalytic H2 evolution of 2D g-C3N4 nanosheets. The NiCo-HMs can expand the interface of electron migration, promote the separation of photogenerated carriers, provide synergistic Co-Ni active sites, and optimize atomic hydrogen adsorption to improve the kinetics of the catalytic reaction. The resulting 2D/2D NiCo-HMs/g-C3N4 heterojunction displays a high photocatalytic H2 evolution of 3.58 mmol g-1 h-1.
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Affiliation(s)
- Haiwei Su
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Xiaohui Yu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Weikang Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, P. R. China
| | - Lele Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Hua Tang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China. .,School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Qinqin Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
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7
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Reddy BRP, Auffrant A, Gosmini C. Dehalogenation and Desulfonation from Aryl and Alkyl Compounds with a Cobalt Catalyst in the Presence of Alcohol. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire CNRS, École Polytechnique, IP Paris 91128 Palaiseau France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire CNRS, École Polytechnique, IP Paris 91128 Palaiseau France
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8
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Zhang L, Ma W, Sun C, Fang L, Song X, Fei H. Precise incorporation of transition metals into organolead oxyhalide crystalline materials for photocatalysis. Dalton Trans 2021; 50:11360-11364. [PMID: 34378591 DOI: 10.1039/d1dt01621k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organolead halide crystalline materials are an emerging class of high-performance photocatalysts. However, limited studies have been performed to tune their photoactive properties by precise introduction of transition metals. Herein, we report the successful incorporation of four different transition metal centers (Mn2+, Co2+, Ni2+ and Zn2+) into a lead oxyhalide crystalline matrix via isoreticular synthesis. Importantly, the precise control of the incoming transition metal positions has been achieved by its octahedral coordination with three organic ligands. Among them, the Zn2+-incorporated material exhibits the highest catalytic activity and recyclable activity in benzylamine oxidation under UV light, which is probably ascribed to the long carrier lifetime and efficient carrier transfer.
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Affiliation(s)
- Lu Zhang
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Rd., Shanghai 200092, P. R. China.
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9
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Light absorption, photocarrier dynamic properties of hierarchical SnS2 microspheres and their performances on photodegradation of high concentration Rhodamine B. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113320] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Wang N, Cao P, Sun S, Ma H, Lin M. Hollow Multiple Noble Metallic Nanoalloys by Mercury-Assisted Galvanic Replacement Reaction for Hydrogen Evolution. Inorg Chem 2021; 60:3471-3478. [PMID: 33591166 DOI: 10.1021/acs.inorgchem.1c00247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hollow multimetallic noble nanoalloys with high surface area/volume ratio, abundant active sites, and relatively effective catalytic activity have attracted considerable research interest. Traditional noble nanoalloys fabricated by hydro-/solvothermal methods usually involve harsh synthetic conditions such as high temperatures and intricate processing. We proposed a simple and mild strategy to synthesize platinum- and palladium-decorated hollow gold-based nanoalloys by the galvanic replacement reaction (GRR) at room temperature using hollow gold nanoparticles as templates and mercury as an intermediate. The hollow gold nanoparticles were essential for increasing the number of surface-active sites of the obtained multimetallic nanoalloys, and the introduction of mercury can eliminate the influence of the electrochemical potential of Pt/Pd with Au in the GRRs, increase alloying degrees, and maintain the nanoalloys that exhibit the hollow nanostructures. The structural characterizations of the hollow nanoalloys were studied by means of high-angle annular dark-field scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. On the basis of the electrochemical catalytic measurements, the platinum-exposed nanoalloys were found to have excellent electrocatalytic activities. Especially in the presence of palladium, owing to the synergistic effect, the quaternary AuHgPdPt hollow nanoalloy displayed a low overpotential of 38 mV at 10 mA cm-2 with a small Tafel slope of 56.23 mV dec-1 for the alkaline hydrogen evolution reaction. In addition, this approach not only expands the application range of the galvanic replacement reaction but also provides new ideas for the preparation of multialloys and even high-entropy alloys at room temperature.
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Affiliation(s)
- Nan Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Pengfei Cao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Shengjun Sun
- Shandong Provincial Key Laboratory of Oral Biomedicine, College of Stomatology, Shandong University, Jinan 250021, China
| | - Houyi Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Meng Lin
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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11
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Light-driven activation of carbon-halogen bonds by readily available amines for photocatalytic hydrodehalogenation. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63582-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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12
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Zhou M, Li C, Fang J. Noble-Metal Based Random Alloy and Intermetallic Nanocrystals: Syntheses and Applications. Chem Rev 2020; 121:736-795. [DOI: 10.1021/acs.chemrev.0c00436] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ming Zhou
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Can Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Jiye Fang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
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13
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Stroyuk OL, Kuchmy SY. Heterogeneous Photocatalytic Selective Reductive Transformations of Organic Compounds: a Review. THEOR EXP CHEM+ 2020. [DOI: 10.1007/s11237-020-09648-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Kallitsakis MG, Ioannou DI, Terzidis MA, Kostakis GE, Lykakis IN. Selective Photoinduced Reduction of Nitroarenes to N-Arylhydroxylamines. Org Lett 2020; 22:4339-4343. [PMID: 32453579 DOI: 10.1021/acs.orglett.0c01367] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the selective photoinduced reduction of nitroarenes to N-arylhydroxylamines. The present methodology facilitates this transformation in the absence of catalyst or additives and uses only light and methylhydrazine. This noncatalytic photoinduced transformation proceeds with a broad scope, excellent functional-group tolerance, and high yields. The potential of this protocol reflects on the selective and straightforward conversion of two general antibiotics, azomycin and chloramphenicol, to the bioactive hydroxylamine species.
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Affiliation(s)
- Michael G Kallitsakis
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece
| | - Dimitris I Ioannou
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece
| | - Michael A Terzidis
- Department of Nutritional Sciences & Dietetics, International Hellenic University, P.O. 141 Sindos, 57400 Thessaloniki, Greece
| | - George E Kostakis
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - Ioannis N Lykakis
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece
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15
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Garrido-Castro AF, Salaverri N, Maestro MC, Alemán J. Intramolecular Homolytic Substitution Enabled by Photoredox Catalysis: Sulfur, Phosphorus, and Silicon Heterocycle Synthesis from Aryl Halides. Org Lett 2019; 21:5295-5300. [DOI: 10.1021/acs.orglett.9b01911] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Noelia Salaverri
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - M. Carmen Maestro
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - José Alemán
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Madrid 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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Wang Y, Davis I, Shin I, Wherritt DJ, Griffith WP, Dornevil K, Colabroy KL, Liu A. Biocatalytic Carbon-Hydrogen and Carbon-Fluorine Bond Cleavage through Hydroxylation Promoted by a Histidyl-Ligated Heme Enzyme. ACS Catal 2019; 9:4764-4776. [PMID: 31355048 DOI: 10.1021/acscatal.9b00231] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
LmbB2 is a peroxygenase-like enzyme that hydroxylates L-tyrosine to L-3,4-dihydroxyphenylalanine (DOPA) in the presence of hydrogen peroxide. However, its heme cofactor is ligated by a proximal histidine, not cysteine. We show that LmbB2 can oxidize L-tyrosine analogs with ring-deactivated substituents such as 3-nitro-, fluoro-, chloro-, iodo-L-tyrosine. We also found that the 4-hydroxyl group of the substrate is essential for reacting with the heme-based oxidant and activating the aromatic C-H bond. The most interesting observation of this study was obtained with 3-fluoro-L-tyrosine as a substrate and mechanistic probe. The LmbB2-mediated catalytic reaction yielded two hydroxylated products with comparable populations, i.e., oxidative C-H bond cleavage at C5 to generate 3-fluoro-5-hydroxyl-L-tyrosine and oxygenation at C3 concomitant with a carbon-fluorine bond cleavage to yield DOPA and fluoride. An iron protein-mediated hydroxylation on both C-H and C-F bonds with multiple turnovers is unprecedented. Thus, this finding reveals a significant potential of biocatalysis in C-H/C-X bond (X = halogen) cleavage. Further 18O-labeling results suggest that the source of oxygen for hydroxylation is a peroxide, and that a commonly expected oxidation by a high-valent iron intermediate followed by hydrolysis is not supported for the C-F bond cleavage. Instead, the C-F bond cleavage is proposed to be initiated by a nucleophilic aromatic substitution mediated by the iron-hydroperoxo species. Based on the experimental results, two mechanisms are proposed to explain how LmbB2 hydroxylates the substrate and cleaves C-H/C-F bond. This study broadens the understanding of heme enzyme catalysis and sheds light on enzymatic applications in medicinal and environmental fields.
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Affiliation(s)
- Yifan Wang
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Ian Davis
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Inchul Shin
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Daniel J. Wherritt
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Wendell P. Griffith
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Kednerlin Dornevil
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
| | - Keri L. Colabroy
- Department of Chemistry, Muhlenberg College, Allentown, Pennsylvania 18104, United States
| | - Aimin Liu
- Department of Chemistry, University of Texas, San Antonio, Texas 78249, United States
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17
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Zhou S, Deng Z, Wu Z, Xie M, Tian Y, Wu Y, Liu J, Li G, He Q. Ta 2O 5/rGO Nanocomposite Modified Electrodes for Detection of Tryptophan through Electrochemical Route. NANOMATERIALS 2019; 9:nano9060811. [PMID: 31142057 PMCID: PMC6631568 DOI: 10.3390/nano9060811] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 12/15/2022]
Abstract
l-tryptophan is one of the eight kinds of essential amino acids for sustainable human life activity. It is common to detect the concentration of tryptophan in human serum for diagnosing and preventing brain related diseases. Herein, in this study, GCE (glassy carbon electrode) modified by Ta2O5-reduced graphene oxide (-rGO) composite (Ta2O5-rGO-GCE) is synthesized by the hydrothermal synthesis-calcination methods, which is used for detecting the concentration of tryptophan in human serum under the as-obtained optimal detection conditions. As a result, the obtained Ta2O5-rGO-GCE shows larger electrochemical activity area than other bare GCE and rGO-GCE due to the synergistic effect of Ta2O5 NPs and rGO. Meanwhile, Ta2O5-rGO-GCE shows an excellent response to tryptophan during the oxidation process in 0.1 M phosphate buffer solution (pH = 6). Moreover, three wide linear detection range (1.0-8.0 μM, 8.0-80 μM and 80-800 μM) and a low limit of detection (LOD) of 0.84 μM (S/N = 3) in the detection of tryptophan are also presented, showing the larger linear ranges and lower detection limit by employing Ta2O5-rGO-GCE. Finally, the as-proposed Ta2O5-rGO-GCE with satisfactory recoveries (101~106%) is successfully realized for the detection of tryptophan in human serum. The synthesis of Ta2O5-rGO-GCE in this article could provide a slight view for the synthesis of other electrochemical catalytic systems in detection of trace substance in human serum.
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Affiliation(s)
- Shun Zhou
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Zefeng Deng
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Zhongkang Wu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Mei Xie
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yaling Tian
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yiyong Wu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Jun Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Guangli Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Quanguo He
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
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Shiraishi Y, Imai J, Yasumoto N, Sakamoto H, Tanaka S, Ichikawa S, Hirai T. Doping of Nb 5+ Species at the Au-TiO 2 Interface for Plasmonic Photocatalysis Enhancement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5455-5462. [PMID: 30916561 DOI: 10.1021/acs.langmuir.8b04075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Au nanoparticles loaded on semiconductor TiO2 absorb visible light due to their surface plasmon resonance (SPR) and inject the photogenerated hot electrons (ehot-) into the conduction band of TiO2. The separated charges promote oxidation and reduction reactions. The step that determines the rate of the plasmonic photocatalysis on the Au/TiO2 system is the ehot- injection through the Schottky barrier created at the Au-TiO2 interface. In the present work, niobium (Nb5+) oxide species were doped at the Au-TiO2 interface by loading Nb5+ onto the TiO2 surface followed by deposition of Au particles (2 wt % of TiO2). Visible light irradiation of the Au/Nb5+/TiO2 catalysts promotes aerobic oxidation of alcohols with much higher efficiency than that of undoped Au/TiO2. Lewis acidity of the Nb5+ species located at the interface cancels the negative charges of Au and creates a barrier with a narrower depletion layer, promoting tunneling ehot- injection. Efficiency of the ehot- injection depends on the amount of Nb5+ doped. Loading small amounts of Nb5+ (∼0.1 wt % of TiO2) creates mononuclear NbO4 species and shows large activity enhancement. In contrast, loading larger amounts of Nb5+ creates aggregated polynuclear Nb2O5 species. They decrease the electron density of Au particles and weaken their SPR absorption. This suppresses the ehot- generation on the Au particles and decreases the activity of plasmonic photocatalysis.
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Affiliation(s)
| | | | | | | | - Shunsuke Tanaka
- Department of Chemical, Energy, and Environmental Engineering , Kansai University , Suita 564-8680 , Japan
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Bhunia K, Chandra M, Khilari S, Pradhan D. Bimetallic PtAu Alloy Nanoparticles-Integrated g-C 3N 4 Hybrid as an Efficient Photocatalyst for Water-to-Hydrogen Conversion. ACS APPLIED MATERIALS & INTERFACES 2019; 11:478-488. [PMID: 30525406 DOI: 10.1021/acsami.8b12183] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Herein, we report the synthesis of metal (Pt and Au) and metal alloy (PtAu) nanoparticles (NPs)-integrated graphitic carbon nitride (g-C3N4) hybrids using a facile solvothermal route for water-splitting application. The metal and metal alloy NPs with varying percentages of Pt and Au are found to be in the size range of 3-5 nm and uniformly distributed on the g-C3N4 sheets. The metal and metal alloy NPs act as cocatalyst for g-C3N4 to enhance the photocatalytic activity for hydrogen (H2) generation through higher light absorption and efficient charge separation. The alloy composition plays an important role to maximize the photoactivity, with an optimized PtAu/g-C3N4 sample delivered 1009 μmol g-1 h-1 of H2. The visible light assisted photocatalytic H2 evolution is further investigated with the optimized PtAu alloy NPs-integrated g-C3N4. This study presents a robust, stable, and easily synthesizable PtAu/g-C3N4 hybrid material as a promising photocatalyst for H2 generation through water splitting.
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Affiliation(s)
- Kousik Bhunia
- Materials Science Centre , Indian Institute of Technology Kharagpur , Kharagpur 721 302 , W. B. , India
| | - Moumita Chandra
- Materials Science Centre , Indian Institute of Technology Kharagpur , Kharagpur 721 302 , W. B. , India
| | - Santimoy Khilari
- Materials Science Centre , Indian Institute of Technology Kharagpur , Kharagpur 721 302 , W. B. , India
| | - Debabrata Pradhan
- Materials Science Centre , Indian Institute of Technology Kharagpur , Kharagpur 721 302 , W. B. , India
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20
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Chen C, Zuo H, Chan KS. Catalytic hydrodebromination of aryl bromides by cobalt tetra-butyl porphyrin complexes with EtOH. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang Y, Wei Y, Song W, Chen C, Zhao J. Photocatalytic Hydrodehalogenation for the Removal of Halogenated Aromatic Contaminants. ChemCatChem 2018. [DOI: 10.1002/cctc.201801222] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuanyuan Wang
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Yan Wei
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Wenjing Song
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Jincai Zhao
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
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Ding J, Long G, Luo Y, Sun R, Chen M, Li Y, Zhou Y, Xu X, Zhao W. Photocatalytic reductive dechlorination of 2-chlorodibenzo-p-dioxin by Pd modified g-C 3N 4 photocatalysts under UV-vis irradiation: Efficacy, kinetics and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2018; 355:74-81. [PMID: 29775880 DOI: 10.1016/j.jhazmat.2018.05.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 05/02/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
Polychlorinated dibenzo-p-dioxins (PCDDs), as a group of notorious anthropogenic environmental toxicants, are arguably ubiquitous in nature. In this study, we investigated the photocatalytic reductive dechlorination of 2-chlorodibenzo-p-dioxin (2-CDD) over Pd/g-C3N4 catalysts under UV-vis irradiation. The g-C3N4 and a series of Pd/g-C3N4 catalysts were prepared by thermal polymerization and mechanical mixing-illumination method and characterized by XRD, TEM, BET, SEM and UV-vis DRS analyses. Among all the samples, the Pd/g-C3N4 (5 wt%) yielded the optimal dechlorination activity with a total 2-CDD conversion of 54% within 4 h, and 76% of those converted 2-CDD were evolved to dibenzo-p-dioxin (DD). The kinetics of dechlorination could be described as pseudo-first-order decay model (R2 > 0.84). Corresponding rate constants (k) increased from 0.052 to 0.17 h-1 with Pd contents up to 5 wt% and decreased to 0.13 h-1 with a 10 wt% of Pd. The enhanced activities originated from the surface plasmonic resonance (SPR) effect of Pd nanoparticles and the formation of Schottky barrier between Pd and g-C3N4, which extend the spectrum responsive range and suppress the charge recombination of g-C3N4. This is the first report on the photocatalytic reductive removal of PCDDs and may provide a new approach for PCDDs pollution control.
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Affiliation(s)
- Jiafeng Ding
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Gaoyuan Long
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Yang Luo
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Runze Sun
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Mengxia Chen
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Yajun Li
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Yanfang Zhou
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Xinhua Xu
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China
| | - Weirong Zhao
- Department of Environmental Engineering, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China.
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Yu X, Li W, Huang J, Li Z, Liu J, Hu P. Superstructure Ta2O5 mesocrystals derived from (NH4)2Ta2O3F6 mesocrystals with efficient photocatalytic activity. Dalton Trans 2018; 47:1948-1957. [DOI: 10.1039/c7dt04371f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Superstructured mesocrystalline Ta2O5 nanosheets were successfully prepared from mesocrystalline (NH4)2Ta2O3F6 nanorods by the annealing method.
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Affiliation(s)
- Xin Yu
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Wei Li
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Jian Huang
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Zhonghua Li
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Jiawen Liu
- Key Laboratory for Photochemical Biomaterials and Energy Storage Materials
- Heilongjiang Province and College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin 150025
- PR China
| | - PingAn Hu
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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