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Shams M, Mansukhani N, Hersam MC, Bouchard D, Chowdhury I. Environmentally sustainable implementations of two-dimensional nanomaterials. Front Chem 2023; 11:1132233. [PMID: 36936535 PMCID: PMC10020365 DOI: 10.3389/fchem.2023.1132233] [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: 12/27/2022] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Rapid advancement in nanotechnology has led to the development of a myriad of useful nanomaterials that have novel characteristics resulting from their small size and engineered properties. In particular, two-dimensional (2D) materials have become a major focus in material science and chemistry research worldwide with substantial efforts centered on their synthesis, property characterization, and technological, and environmental applications. Environmental applications of these nanomaterials include but are not limited to adsorbents for wastewater and drinking water treatment, membranes for desalination, and coating materials for filtration. However, it is also important to address the environmental interactions and implications of these nanomaterials in order to develop strategies that minimize their environmental and public health risks. Towards this end, this review covers the most recent literature on the environmental implementations of emerging 2D nanomaterials, thereby providing insights into the future of this fast-evolving field including strategies for ensuring sustainable development of 2D nanomaterials.
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Affiliation(s)
- Mehnaz Shams
- Civil and Environmental Engineering, Washington State University, Pullman, WA, United States
| | - Nikhita Mansukhani
- Departments of Materials Science and Engineering, Chemistry and Medicine, Northwestern University, Evanston, IL, United States
| | - Mark C. Hersam
- Departments of Materials Science and Engineering, Chemistry and Medicine, Northwestern University, Evanston, IL, United States
| | - Dermont Bouchard
- National Exposure Research Laboratory, United States Environmental Protection Agency, Athens, GA, United States
| | - Indranil Chowdhury
- Civil and Environmental Engineering, Washington State University, Pullman, WA, United States
- *Correspondence: Indranil Chowdhury,
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Fu Y, Han H, Xu Y, Cui H, Yao X, Guan G, Han MY. BSA-assisted hydrothermal conversion of MoS 2 nanosheets into quantum dots with high yield and bright fluorescence for constructing a sensing platform via dual quenching effects. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121701. [PMID: 35933779 DOI: 10.1016/j.saa.2022.121701] [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: 05/12/2022] [Revised: 07/13/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
With large surface-responsive and excitation-dependent fluorescence, two-dimensional fluorescent quantum dots (QDs) have been receiving tremendous attention to develop their facile synthetic approaches and/or expand their promising applications. Here, a two-step strategy is demonstrated for high-yield production of MoS2 QDs from MoS2 powder through first sonication-driven exfoliation and subsequent hydrothermal splitting with the assistance of bovine serum albumin (BSA). Experimentally, ∼100 nm-sized MoS2 nanosheets are ultrasonically exfoliated from MoS2 powder in a BSA solution, and further hydrothermally split into ∼ 8.2 nm-sized QDs (NQDs) at 200 °C. In addition to their excellent stability/dispersibility in aqueous solution, the resultant MoS2 NQDs also exhibit much brighter blue fluorescence than those synthesized by other methods. The strong fluorescence is significantly quenched by p-nitrophenol for constructing a sensitive sensor with high selectivity, which is attributed to dual quenching effects from inner filter effect (IFE) and fluorescence resonance energy transfer (FRET). Interestingly, with the increment of pH from 5 to 10, the ratio of IFE in fluorescence quenching gradually decreases accompanied by an increment of FRET ratio, resulting in the high sensitivity and responsivity for detecting p-nitrophenol at a wide range of pH. Clearly, the MoS2 NQD-based sensing approach demonstrates a promising potential for selective detection and fast analysis of pollutants in environment monitoring and security screening.
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Affiliation(s)
- Yuhan Fu
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China
| | - Hui Han
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China
| | - Yaming Xu
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China
| | - Hongbo Cui
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China
| | - Xiang Yao
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China
| | - Guijian Guan
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China.
| | - Ming-Yong Han
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, PR China; Institute of Materials Research and Engineering, Singapore 138634, Singapore.
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Simonenko NP, Kadyrov NS, Simonenko TL, Simonenko EP, Sevastyanov VG, Kuznetsov NT. Preparation of ZnS Nanopowders and Their Use in the Additive Production of Thick-Film Structures. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621090126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Xu X, Wang J, Huang R, Qi W, Su R, He Z. Preparation of laccase mimicking nanozymes and their catalytic oxidation of phenolic pollutants. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00074h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The construction of a nanozyme that mimics a natural enzyme is a promising strategy to obtain a highly stable catalyst.
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Affiliation(s)
- Xiaojian Xu
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
| | - Jinghui Wang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
| | - Renliang Huang
- School of Marine Science and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P.R. China
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Guo Z, Huo W, Cao T, Liu X, Ren S, Yang J, Ding H, Chen K, Dong F, Zhang Y. Heterojunction interface of zinc oxide and zinc sulfide promoting reactive molecules activation and carrier separation toward efficient photocatalysis. J Colloid Interface Sci 2020; 588:826-837. [PMID: 33309244 DOI: 10.1016/j.jcis.2020.11.118] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 10/22/2022]
Abstract
Heterojunction photocatalysts, which can alleviate the low carrier separation efficiency and insufficient light absorption capacity of a single catalyst, have received widespread attention. However, the specific interfacial structure of the heterojunction and its effect on the photocatalytic reaction is still unclear. Herein, a battery of zinc oxide/zinc sulfide (ZnO@ZnS) heterojunction microspheres with different degrees of sulfuration were successfully constructed via a facile hydrothermal method. The as-prepared photocatalysts shown decent aerobic nitric oxide (NO) oxidation performance under visible light irradiation, and the results of various characterization techniques illustrated that the superior photoactivity could be ascribed to the spatial separation of photoinduced electron-hole pairs due to the synergy of the internal electric field and the band offset. More importantly, density functional theory (DFT) calculations revealed that the heterojunction interface can significantly promote the generation of reactive oxygen species (ROS) and NO+ reaction intermediates and thus accelerate the photocatalytic reaction. Finally, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) technology was used to time-dependently monitor the NO oxidation process, revealing the photocatalytic mechanism. This work investigated the role of the heterojunction interface in the gas-phase catalytic reaction, broadening the practical application of the ZnO@ZnS heterojunction.
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Affiliation(s)
- Ziyang Guo
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Wangchen Huo
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Tong Cao
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaoying Liu
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Shan Ren
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jian Yang
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Hui Ding
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin 300350, China
| | - Ke Chen
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Fan Dong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Yuxin Zhang
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
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Abd Malek NA, Alias N, Md Saad SK, Abdullah NA, Zhang X, Li X, Shi Z, Rosli MM, Tengku Abd Aziz TH, Umar AA, Zhan Y. Ultra-thin MoS2 nanosheet for electron transport layer of perovskite solar cells. OPTICAL MATERIALS 2020; 104:109933. [DOI: 10.1016/j.optmat.2020.109933] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Zeng L, Li X, Zhao Q, Fan S, Zhang M, Yin Z, Chen A. Boosting interfacial charge transfer and electricity generation for levofloxacin elimination in a self-driven bio-driven photoelectrocatalytic system. NANOSCALE 2019; 11:22042-22053. [PMID: 31720647 DOI: 10.1039/c9nr05520g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Recently, molybdenum disulfide (MoS2) has stimulated significant research interest as a promising electrode candidate in solar cells and energy conservation fields. Unfortunately, the short lower electron/hole migration lifetimes and easy agglomeration hamper its wide practical applications to some extent. Herein, interface engineering coupled with a bio-assisted photoelectrochemical (PEC) strategy is presented to construct a 0D MoS2 quantum dot (QD)/1D TiO2 nanotube electrode for pollutant elimination. Aimed at accelerating charge transfer over the 0D/1D composite interface, three types of coupling PEC models were developed to optimize the catalytic performance. The single chamber microbial fuel cell (SCMFC)-PEC integrated system was found to be the best alternative for levofloxacin (LEV) elimination (0.029 min-1), and the sequential SCMFC-PEC further realized the whole system self-running independently. In addition, the interfacial electron migration and LEV degradation pathways were thoroughly investigated by LC/TOF/MS coupled with density functional theory (DFT) calculations to clearly elucidate the electron transfer paths, LEV-attacked sites and mineralization pathways in a joint sequential SCMFC-PEC system. As such, the constructed self-recycling system provides a new platform for bio-photo-electrochemical utilization, which could exhibit promising potential in environmental purification.
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Affiliation(s)
- Libin Zeng
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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Li Y, Wang X, Liu M, Luo H, Deng L, Huang L, Wei S, Zhou C, Xu Y. Molybdenum Disulfide Quantum Dots Prepared by Bipolar-Electrode Electrochemical Scissoring. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E906. [PMID: 31234413 PMCID: PMC6630415 DOI: 10.3390/nano9060906] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/06/2019] [Accepted: 06/10/2019] [Indexed: 12/13/2022]
Abstract
A convenient bipolar-electrode (BPE) electrochemical method was engineered to produce molybdenum disulfide (MoS2) quantum dots (QDs) using pure phosphate buffer (PBS) as the electrolyte and the MoS2 powder as the precursor. Meanwhile, the corresponding by-product precipitate was studied, in which MoS2 nanosheets were observed. The BPE design would not be restricted by the shape and size of the MoS2 precursor. It could lead to the defect generation and 2H → 1T phase variation of the MoS2, resulting in the formation of nanosheets and finally the QDs. The as-prepared MoS2 QDs exhibited high photoluminescence (PL) quantum yield of 13.9% and average lateral size of 4.4 ± 0.2 nm, respectively. Their excellent PL property, low cytotoxicity, and good aqueous dispersion offer promising applicability in PL staining and cell imaging. Meanwhile, the as-obtained byproduct containing the nanosheets could be used as an effective electromagnetic wave (EMW) absorber. The minimum reflection loss (RL) value was -54.13 dB at the thickness of 3.3 mm. The corresponding bandwidth with efficient attenuation (<-10 dB) was up to 7.04 GHz (8.8-15.84 GHz). The as-obtained EMW performance was far superior over most previously reported MoS2-based nanomaterials.
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Affiliation(s)
- Yang Li
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Xiaoxia Wang
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Mengli Liu
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
- College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Heng Luo
- College of Physics and Electronics, Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, Central South University, Changsha 410083, China.
| | - Lianwen Deng
- College of Physics and Electronics, Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, Central South University, Changsha 410083, China.
| | - Lei Huang
- College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Shuang Wei
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Congli Zhou
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Yuanhong Xu
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
- College of Life Sciences, Qingdao University, Qingdao 266071, China.
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Haldar D, Bose S, Ghosh A, Saha SK. A green luminescent MoS 2-CdTe hybrid nanostructure synthesized through surface charge interaction. NANOSCALE ADVANCES 2019; 1:1853-1863. [PMID: 36134211 PMCID: PMC9419516 DOI: 10.1039/c8na00388b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/05/2019] [Indexed: 06/16/2023]
Abstract
During the last few years, intensive research has been carried out on the synthesis of different hybrid nanostructures mostly using hydrothermal and solvothermal techniques. But the fabrication of the hybrid nanostructure through surface charge interaction of the individual components is comparatively less explored. Here in this work, a hybrid nanostructure based on MoS2 and CdTe quantum dots is synthesized through a simple surface charge interaction process using the negative surface charge of the excess sulfide ions (S2-) present at the edge of the MoS2 QDs and positively charged CdTe QDs where the positive surface charge was induced in CdTe by using a cysteamine ligand in acidic medium. In the photoluminescence (PL) emission spectrum, a new peak is observed which is different from those of both of the individual components. Interestingly, with increasing the concentration of CdTe QDs during the preparation of the hybrid nano-structure, the peak of hybrid QDs is gradually blue shifted towards the emission of MoS2 QDs. The maximum blue shift occurs up to 1 : 1 (v/v) ratio of MoS2 : CdTe as in this concentration ratio all S2- ions are neutralized by -NH3 +. This new emission occurs from a newly generated hybrid energy level. The energy level positions of the two different QDs along with the hybrid ones are estimated via cyclic voltammetry and absorption experiments.
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Affiliation(s)
- Dhrubaa Haldar
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A and 2B Raja S C Mullick Road, Jadavpur Kolkata-700032 India
| | - Saptasree Bose
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A and 2B Raja S C Mullick Road, Jadavpur Kolkata-700032 India
| | - Arnab Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A and 2B Raja S C Mullick Road, Jadavpur Kolkata-700032 India
| | - Shyamal K Saha
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A and 2B Raja S C Mullick Road, Jadavpur Kolkata-700032 India
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10
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Huang L, Zhang Y, Shang C, Wang X, Zhou G, Ou JZ, Wang Y. ZnS Nanotubes/Carbon Cloth as a Reversible and High-Capacity Anode Material for Lithium-Ion Batteries. ChemElectroChem 2018. [DOI: 10.1002/celc.201801289] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lanyan Huang
- International Academy of Optoelectronics at Zhaoqing; South China Normal University; Guangdong China
| | - Yongguang Zhang
- International Academy of Optoelectronics at Zhaoqing; South China Normal University; Guangdong China
- Synergy Innovation Institute; Guangdong University of Technology; Heyuan China
| | - Chaoqun Shang
- International Academy of Optoelectronics at Zhaoqing; South China Normal University; Guangdong China
| | - Xin Wang
- International Academy of Optoelectronics at Zhaoqing; South China Normal University; Guangdong China
| | - Guofu Zhou
- International Academy of Optoelectronics at Zhaoqing; South China Normal University; Guangdong China
| | - Jian Zhen Ou
- School of Engineering; RMIT University; Melbourne Vic 3001 Australia
| | - Yichao Wang
- School of Life and Environmental Sciences; Deakin University; Geelong Vic 3216 Australia
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11
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Zhang G, Liao Q, Liu Y, Wang L, Gou H, Ke C, Huang X, Xi K, Jia X. Secondary structure-induced aggregation by hydrogen peroxide: a stimuli-triggered open/close implementation by recombination. NANOSCALE 2018; 10:5503-5514. [PMID: 29512667 DOI: 10.1039/c7nr09356j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The fabrication of reactive aggregation nanomaterials through assemblies in a facile and cost-effective manner is much desired but remains to be well explored. Here we show that exquisite and ultra-long (>2 μm) hybrid polymer nanorods (NRs) can be formed by a simple self-assembly of a phenylboronic acid modified genistein crosslinker (Ge-di(HMPBA-pin)) and d-α-tocopheryl polyethylene glycol 1000 (TPGS). The obtained NRs exhibit quantitative and sensitive colorimetric detection of H2O2 with a remarkable detection limit for different stromal materials. More significantly, the presence of H2O2 triggers a distinct morphological transformation of the polymer NR assembly into the secondary structure of micelles via the oxidative deboronation of boronate moieties in HMPBA-pin-SA. It spontaneously induces the aggregation of metal nanoparticles (Au NPs), metal nanorods (Au NRs), quantum dots (MoS2 QDs), metal ions (Cu2+), protein (ferritin) and tetraphenylethene (TPE) molecules, giving rise to a dramatic stimuli-triggered open/close switchable complexation and apparent colorimetric transitions in vitro. This study, for the first time, showcases the fascinating advantages of such unprecedented secondary structure-induced aggregation and uncovers the immense potential to design a plethora of other sensing systems by virtue of the alternate trigger-specific, sacrifice-aggregated building moieties.
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Affiliation(s)
- Guiyang Zhang
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, PR China
| | - Qiaobo Liao
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Yanfeng Liu
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, PR China
| | - Li Wang
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, PR China
| | - Huilin Gou
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Can Ke
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Xin Huang
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, PR China
| | - Kai Xi
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Xudong Jia
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, PR China
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Zhao F, Rong Y, Wan J, Hu Z, Peng Z, Wang B. MoS 2 quantum dots@TiO 2 nanotube composites with enhanced photoexcited charge separation and high-efficiency visible-light driven photocatalysis. NANOTECHNOLOGY 2018; 29:105403. [PMID: 29319002 DOI: 10.1088/1361-6528/aaa68c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
MoS2 quantum dots (QDs) that are 5 nm in size were deposited on the surface of ultrathin TiO2 nanotubes (TNTs) with 5 nm wall thickness by using an improved hydrothermal method to form a MoS2 QDs@TNT visible-light photocatalyst. The ultrathin TNTs with high percentage of photocatalytic reactive facets were fabricated by the commercially available TiO2 nanoparticles (P25) through an improved hydrothermal method, and the MoS2 QDs were acquired by using a surfactant-assisted technique. The novel MoS2 QDs@TNT photocatalysts showed excellent photocatalytic activity with a decolorization rate of 92% or approximately 3.5 times more than that of pure TNTs for the high initial concentration of methylene blue solution (20 mg l-1) within 40 min under visible-light irradiation. MoS2 as the co-catalysts favored the broadening of TNTs into the visible-light absorption scope. The quantum confinement and edge effects of the MoS2 QDs and the heterojunction formed between the MoS2 QDs and TNTs efficiently extended the lifetime of photoinduced charges, impeded the recombination of photoexcited electron-hole pairs, and improved the visible-light-driven high-efficiency photocatalysis.
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Affiliation(s)
- Fenfen Zhao
- National Engineering Lab of Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018, People's Republic of China
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Cao X, Ding C, Zhang C, Gu W, Yan Y, Shi X, Xian Y. Transition metal dichalcogenide quantum dots: synthesis, photoluminescence and biological applications. J Mater Chem B 2018; 6:8011-8036. [DOI: 10.1039/c8tb02519c] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We introduce the synthesis strategy, photoluminescence features and biological applications of TMD QDs.
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Affiliation(s)
- Xuanyu Cao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Caiping Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Cuiling Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Wei Gu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Yinghan Yan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Xinhao Shi
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Yuezhong Xian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
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Joy M, Mohamed AP, Warrier KGK, Hareesh US. Visible-light-driven photocatalytic properties of binary MoS2/ZnS heterostructured nanojunctions synthesized via one-step hydrothermal route. NEW J CHEM 2017. [DOI: 10.1039/c6nj03727e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The MoS2/ZnS binary heterojunctions obtained by a facile one-step hydrothermal route is competent to retrench the forbidden energy gap by creating sulfur vacancies. The tailoring of the lattice parameters of sulfides for interfacial charge transfer through the heterojunctions enhanced photocatalytic activity.
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Affiliation(s)
- Mega Joy
- Materials Science and Technology Division (MSTD)
- National Institute for Interdisciplinary Science and Technology
- Council of Scientific and Industrial Research (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - A. Peer Mohamed
- Materials Science and Technology Division (MSTD)
- National Institute for Interdisciplinary Science and Technology
- Council of Scientific and Industrial Research (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - K. G. K. Warrier
- Materials Science and Technology Division (MSTD)
- National Institute for Interdisciplinary Science and Technology
- Council of Scientific and Industrial Research (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - U. S. Hareesh
- Materials Science and Technology Division (MSTD)
- National Institute for Interdisciplinary Science and Technology
- Council of Scientific and Industrial Research (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
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15
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Ma C, Zhu H, Zhou J, Cui Z, Liu T, Wang Y, Wang Y, Zou Z. Confinement effect of monolayer MoS2 quantum dots on conjugated polyimide and promotion of solar-driven photocatalytic hydrogen generation. Dalton Trans 2017; 46:3877-3886. [DOI: 10.1039/c6dt04916h] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monolayer MoS2 quantum dot (MQD) confined polyimide demonstrates 360% enhancement in hydrogen production compared to Pt/PI under solar light.
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Affiliation(s)
- Chenghai Ma
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Haoyue Zhu
- Department of Chemistry
- The Pennsylvania State University
- University Park
- USA
| | - Jun Zhou
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Zhiwei Cui
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Teng Liu
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Yicong Wang
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Ying Wang
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
| | - Zhigang Zou
- Eco-materials and Renewable Energy Research Center (ERERC)
- School of Chemistry and Chemical Engineering
- National Laboratory of Solid State Microstructures
- Kunshan Innovation Institute of Nanjing University
- Jiangsu Key Laboratory for Nanotechnology
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Lv Z, Mahmood N, Tahir M, Pan L, Zhang X, Zou JJ. Fabrication of zero to three dimensional nanostructured molybdenum sulfides and their electrochemical and photocatalytic applications. NANOSCALE 2016; 8:18250-18269. [PMID: 27761550 DOI: 10.1039/c6nr06836g] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Transition metal dichalcogenides (TMDs) are emerging as promising materials, particularly for electrochemical and photochemical catalytic applications, and among them molybdenum sulfides have received tremendous attention due to their novel electronic and optoelectronic characteristics. Several review articles have summarized the recent progress on TMDs but no critical and systematic summary exists about the nanoscale fabrication of MoS2 with different dimensional morphologies. In this review article, first we will summarize the recent progress on the morphological tuning and structural evolution of MoS2 from zero-dimension (0D) to 3D. Then the different engineering methods and the effect of synthesis conditions on structure and morphology of MoS2 will be discussed. Moreover, the corresponding change in the electronic and physicochemical properties of MoS2 induced by structure tuning will also be presented. Further, the applications of MoS2 in various electrochemical systems e.g. hydrogen evolution reaction (HER), oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and supercapacitors as well as photocatalytic hydrogen evolution will be highlighted. The review article will also critically focus on challenges faced by researchers to tune the MoS2 nanostructures and the resulting electrochemical mechanism to enhance their performances. At the end, concluding remarks and future prospects for the development of better MoS2 based nanostructured materials for the aforementioned applications will be presented.
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Affiliation(s)
- Zhe Lv
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
| | - Nasir Mahmood
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China. and Center of Micro-Nano Functional Materials and Devices, School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Muhammad Tahir
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China. and Department of Physics, The University of Lahore, 53700, Pakistan
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
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Gromboni MF, Mascaro LH. Optical and structural study of electrodeposited zinc selenide thin films. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.04.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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A Unique Mixed-Valence CuII/CuI Organic–Inorganic Hybrid Supramolecular Cluster: Syntheses, Crystal Structure, Luminescence and 2,4,6-Trinitrophenol Sensing Properties. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1005-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Wang Y, Hu J, Zhuang Q, Ni Y. Enhancing sensitivity and selectivity in a label-free colorimetric sensor for detection of iron(II) ions with luminescent molybdenum disulfide nanosheet-based peroxidase mimetics. Biosens Bioelectron 2016; 80:111-117. [PMID: 26807525 DOI: 10.1016/j.bios.2016.01.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/12/2016] [Accepted: 01/13/2016] [Indexed: 11/27/2022]
Abstract
In the present study, we demonstrated that the luminescent molybdenum disulfide (MoS2) nanosheets, which were prepared hydrothermally by using sodium molybdate and thiourea as precursors, possessed peroxidase-like activity, and could catalyze the oxidation of peroxidase substrate o-phenylenediamine (OPD) in the presence of hydrogen peroxide (H2O2) to produce a yellow color reaction. Further addition of Fe(2+) into the nanosheets led to peroxidase mimetics with greatly enhanced catalytic activity. The observation was exploited to develop a label-free colorimetric nanozyme sensor for detection of Fe(2+). The fabricated MoS2/OPD/H2O2 sensor showed a wide linear range of 0.01-0.8 µM with a detection limit of 7 nM. Moreover, it was found that the MoS2/OPD/H2O2 sensor displayed enhanced sensitivity and selectivity toward Fe(2+) compared with the OPD/H2O2 sensor, suggesting that the MoS2 nanosheets could improve the performance of the Fe(2+) sensor. An advanced chemometrics algorithm, multivariate curve resolution by alternating least squares (MCR-ALS), was further applied to interpret the origin of enhancing sensitivity and selectivity in the Fe(2+) sensor with the MoS2 nanosheets. The time-dependent UV-vis spectral data of the studied systems were collected, and submitted to the MCR-ALS. The results showed that the increased sensitivity and selectivity of the MoS2/OPD/H2O2 sensor for Fe(2+) detection likely arose from its large reaction rate constant. Finally, the proposed MoS2/OPD/H2O2 sensor was successfully applied for detection of Fe(2+) in water samples.
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Affiliation(s)
- Yong Wang
- College of Chemistry, Nanchang University, Nanchang 330031, China.
| | - Jie Hu
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Qianfen Zhuang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Yongnian Ni
- College of Chemistry, Nanchang University, Nanchang 330031, China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Wang X, Sun G, Li N, Chen P. Quantum dots derived from two-dimensional materials and their applications for catalysis and energy. Chem Soc Rev 2016; 45:2239-62. [DOI: 10.1039/c5cs00811e] [Citation(s) in RCA: 325] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Equipped with a wide range of extraordinary and tailorable properties, quantum dots derived from two-dimensional materials promise a spectrum of novel applications including catalysis and energy.
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Affiliation(s)
- Xuewan Wang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
| | - Gengzhi Sun
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
| | - Nan Li
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
| | - Peng Chen
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
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21
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Bindhu B, Sharu BK, Gopika MS, Praseetha PK, Veluraja K. Molybdenum disulfide nanoflakes through Li-AHA assisted exfoliation in an aqueous medium. RSC Adv 2016. [DOI: 10.1039/c5ra25368c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel route to synthesize MoS2 nanoflakes though Li-AHA assisted liquid phase exfoliation.
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Affiliation(s)
- B. Bindhu
- Department of Physics
- Noorul Islam Centre for Higher Education
- India
| | - B. K. Sharu
- School of Mechanical and Building Sciences
- VIT University
- Vellore-632014
- India
| | - M. S. Gopika
- Department of Physics
- Noorul Islam Centre for Higher Education
- India
| | - P. K. Praseetha
- Department of Nanotechnology
- Noorul Islam Centre for Higher Education
- India
| | - K. Veluraja
- School of Advanced Sciences
- VIT University
- Vellore-632014
- India
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22
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Ren X, Liu J, Ren J, Tang F, Meng X. One-pot synthesis of active copper-containing carbon dots with laccase-like activities. NANOSCALE 2015; 7:19641-19646. [PMID: 26548709 DOI: 10.1039/c5nr04685h] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Herein, an effective strategy for designing a new type of nanozyme, blue fluorescent laccase mimics, is reported. Active copper-containing carbon dots (Cu-CDs) were synthesized through a simple, nontoxic and one-pot hydrothermal method, which showed favorable photoluminescence properties and good photostability under high-salt conditions or in a broad pH range (3.0-13.5). The Cu-CDs possessed intrinsic laccase-like activities and could catalyze the oxidation of the laccase substrate p-phenylenediamine (PPD) to produce a typical color change from colorless to brown. Poly(methacrylic acid sodium salt) (PMAA) not only was used as the carbon source and reducing agent, but also provided carboxyl groups to assist flocculation between Cu-CDs and polyacrylamide, which facilitated the removal of PPD. Importantly, the intrinsic fluorescence of the as-prepared Cu-CDs could indicate the presence of hydroquinone, one of the substrates of laccases, based on laccase mimics and fluorescence quenching.
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Affiliation(s)
- Xiangling Ren
- Laboratory of Controllable Preparation and Application of Nanomaterials, Center for Micro/nanomaterials and Technology & Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Jing Liu
- Laboratory of Controllable Preparation and Application of Nanomaterials, Center for Micro/nanomaterials and Technology & Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Jun Ren
- Laboratory of Controllable Preparation and Application of Nanomaterials, Center for Micro/nanomaterials and Technology & Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Fangqiong Tang
- Laboratory of Controllable Preparation and Application of Nanomaterials, Center for Micro/nanomaterials and Technology & Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Xianwei Meng
- Laboratory of Controllable Preparation and Application of Nanomaterials, Center for Micro/nanomaterials and Technology & Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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