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Saeloo B, Saisopa T, Chavalekvirat P, Iamprasertkun P, Jitapunkul K, Sirisaksoontorn W, Lee TR, Hirunpinyopas W. Role of Transition Metal Dichalcogenides as a Catalyst Support for Decorating Gold Nanoparticles for Enhanced Hydrogen Evolution Reaction. Inorg Chem 2024; 63:18750-18762. [PMID: 39327994 PMCID: PMC11462500 DOI: 10.1021/acs.inorgchem.4c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 09/13/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024]
Abstract
The two-dimensional (2D) transition metal dichalcogenides (TMDs) have been widely used in various electrochemical applications, such as electrocatalysts, sensors, and energy storage. They have been potentially demonstrated not only as catalysts but also as supporting materials for boosting catalytic performance and durability. However, the different types of TMD nanosheets (transition metals and chalcogenide atoms) for supporting nanoparticles have not yet been investigated for electrocatalytic performance. Herein, we provide mechanistic insights into the hydrogen evolution reaction (HER) of various TMDs (i.e., MoS2, MoSe2, and WSe2) as catalyst supports for the decoration of gold nanoparticles (AuNPs), which represent an active catalyst. Among various TMD supports, it was found that the MoS2 supports with an optimal amount of AuNPs loading (MoS2/AuNPs) exhibited excellent catalytic activity (low overpotential and Tafel slope), which is better than that of other TMD supports and the previously reported TMD-based support. This is due to well-dispersed AuNPs with the charge transfer of Au-MoS2 interaction (increasing n-type), leading to highly active sites for HER performance. Moreover, the perfect laminar stacking of the MoS2/AuNPs electrode, providing high porosity and good wettability, plays an important role in enhancing the ability of ionic electrolytes to infiltrate through the electrode area (up to ∼50 F g-1). The MoS2/AuNPs exhibit long-term stability with no disintegration of the electrode when performing the HER at ultrahigh current density (>200 mA cm-2) for over 24 h. This work aims to deepen the understanding of TMD materials as catalyst supports, and is advantageous for the development of catalyst-based applications.
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Affiliation(s)
- Boontarika Saeloo
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Chatuchak, Bangkok 10900, Thailand
| | - Thanit Saisopa
- Department
of Applied Physics, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima 30000, Thailand
| | - Panwad Chavalekvirat
- School
of Bio-Chemical Engineering and Technology, Sirindhron International
Institute of Technology, Thammasat University, Pathum Thani 12120, Thailand
- Research
Unit in Sustainable Electrochemical Intelligent, Thammasat University, Pathum Thani 12120, Thailand
| | - Pawin Iamprasertkun
- School
of Bio-Chemical Engineering and Technology, Sirindhron International
Institute of Technology, Thammasat University, Pathum Thani 12120, Thailand
- Research
Unit in Sustainable Electrochemical Intelligent, Thammasat University, Pathum Thani 12120, Thailand
| | - Kulpavee Jitapunkul
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Weekit Sirisaksoontorn
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Chatuchak, Bangkok 10900, Thailand
| | - T. Randall Lee
- Department
of Chemistry and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5003, United States
| | - Wisit Hirunpinyopas
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Chatuchak, Bangkok 10900, Thailand
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Xue Y, Xu Y, Yan Q, Zhu K, Ye K, Yan J, Wang Q, Cao D, Wang G. Coupling of Ru nanoclusters decorated mixed-phase (1T and 2H) MoSe 2 on biomass-derived carbon substrate for advanced hydrogen evolution reaction. J Colloid Interface Sci 2022; 617:594-603. [PMID: 35303643 DOI: 10.1016/j.jcis.2022.03.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 12/15/2022]
Abstract
The development of efficient catalysts for hydrogen evolution reaction (HER) from water splitting is one of the most promising strategies to achieve the goal of peak carbon dioxide emissions and carbon neutrality. Herein, Ru nanoclusters decorated MoSe2 nanosheets supported on a Crepis tectorum fluff biomass-derived hollow carbon tube (Ru-MoSe2/CMT) are prepared as the HER catalysts in both alkaline and acidic conditions. The Ru modification induces the transformation of MoSe2 from 2H phase to 1T phase. Benefiting from the strong water dissociation ability of Ru, Ru-MoSe2/CMT exhibits a low overpotential of 70 mV with a Tafel slope of 39 mV dec-1 in 1 M KOH. Furthermore, the assembled Ru-MoSe2/CMT || RuO2 system with a low cell voltage of 1.54 V at 10 mA cm-2 exhibits outstanding overall water splitting performance superior to Pt/C || RuO2 system. The Ru-MoSe2/CMT || RuO2 system also achieves the excellent stability of up to 30 h in 1 M KOH. The synergy effect between Ru and MoSe2, as well as the improved electron transfer kinetics provided by the biomass-derived carbon substrate together contribute to the excellent HER activity of Ru-MoSe2/CMT.
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Affiliation(s)
- Yanqin Xue
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Yanyan Xu
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Qing Yan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China; School of Biological and Chemical Engineering, NingboTech University, Ningbo 315100, P. R. China.
| | - Kai Zhu
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Ke Ye
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Jun Yan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Qian Wang
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Dianxue Cao
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Guiling Wang
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
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3
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Du L, Chen Y, Wang Q, Zhao Y, Li L, Liu X, Tian G. Hierarchical Co 0.85 Se-CdSe/MoSe 2 /CdSe Sandwich-Like Heterostructured Cages for Efficient Photocatalytic CO 2 Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100412. [PMID: 34159750 DOI: 10.1002/smll.202100412] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/12/2021] [Indexed: 06/13/2023]
Abstract
Fabricating efficient photocatalysts with rapid charge carrier separation and high visible light harvesting is an advisable strategy to improve CO2 reduction performance. Herein, hierarchical Co0.85 Se-CdSe/MoSe2 /CdSe cages with sandwich-like heterostructure are prepared to act as efficient photocatalysts for CO2 reduction. In this study, the structure and composition of the final products can be regulated through the cation-exchange reaction in the presence of ascorbic acid. In the Co0.85 Se-CdSe/MoSe2 /CdSe cages, MoSe2 nanosheets function as a bridge to integrate Co0.85 Se-CdSe and CdSe on both sides of the MoSe2 nanosheet shell into a sandwich-like heterostructured catalyst system, which possesses multiple positive merits for photocatalysis, including accelerated transport and separation of photogenerated carriers, improved visible light utilization, and increased catalytic active sites. Thus, the optimized Co0.85 Se-CdSe/MoSe2 /CdSe cages exhibit remarkable visible-light photocatalytic performance and outstanding stability for CO2 reduction with a high CO average yield of 15.04 µmol g-1 h-1 and 90.14% selectivity, which are much higher than those of other control samples including single-component catalysts and binary hybrid catalysts. This study provides a promising way for the design and fabrication of high-efficiency photocatalysts.
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Affiliation(s)
- Lizhi Du
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Yajie Chen
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Qi Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Yumeng Zhao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Longge Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Xiu Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Guohui Tian
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
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Qin Z, Zhao J. 1 T-MoSe 2 monolayer supported single Pd atom as a highly-efficient bifunctional catalyst for ORR/OER. J Colloid Interface Sci 2021; 605:155-162. [PMID: 34311310 DOI: 10.1016/j.jcis.2021.07.087] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/24/2021] [Accepted: 07/16/2021] [Indexed: 02/07/2023]
Abstract
The development of highly-efficient catalysts for oxygen reduction reaction (ORR) or oxygen evolution reaction (OER) is highly crucial for the commercial applications of some novel energy-related devices. Herein, using comprehensive first-principles computations, the potential of a variety of single metal-based catalysts supported by MoSe2 nanosheet to boost the ORR or OER process was evaluated. The computations revealed that these considered metal atoms can be more stably anchored on 1 T-MoSe2 than those of on 2H-MoSe2. In particular, the supported Ni and Pd catalysts on 1 T-MoSe2 exhibit high OER activity due to their quite low overpotential (0.47 and 0.49 V). Meanwhile, the anchored Pd atom on 1 T-MoSe2 also displays excellent ORR performance with an ultra-low overpotential of 0.32 V, thus implying its superior bifunctional activity for ORR/OER. Our results provide a quite promising avenue to design a new class of MoSe2-based single atom catalysts for fuel cells, which also further enriches the application fields of MoSe2 nanosheets in advanced catalysis.
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Affiliation(s)
- Zengming Qin
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, No. 1, Shida Street, Harbin 150025, PR China
| | - Jingxiang Zhao
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, No. 1, Shida Street, Harbin 150025, PR China.
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Zhu M, Bai X, Yan Q, Yan Y, Zhu K, Ye K, Yan J, Cao D, Huang X, Wang G. Iron molybdenum selenide supported on reduced graphene oxide as an efficient hydrogen electrocatalyst in acidic and alkaline media. J Colloid Interface Sci 2021; 602:384-393. [PMID: 34139536 DOI: 10.1016/j.jcis.2021.06.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/04/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
It is of great significance to develop inexpensive and high-efficiency electrocatalysts for the hydrogen evolution reaction (HER). In this work, we synthesized iron molybdenum selenide (FeSe2-MoSe2) loaded on reduced graphene oxide (FeSe2-MoSe2/rGO) by a one-step hydrothermal method. We further optimized the Fe/Mo ratio and determined the best ratio to be 1-1. In acidic (or alkaline) solution, the optimized FeSe2-MoSe2(1-1)/rGO has a small Tafel slope of 55 (or 80) mV dec-1 and needs an overpotential of 101 (or 178) mV to achieve 10 mA cm-2. These good properties are mainly due to the structure of bimetallic selenides combining rGO. Moreover, rGO enhances the electrical conductivity. Furthermore, the synergistic effect between FeSe2-MoSe2(1-1) and rGO results in better HER performance. Density functional theory (DFT) calculation proves that FeSe2-MoSe2(1-1)/rGO has a small work function. Based on our reasonable design and analysis, FeSe2-MoSe2(1-1)/rGO is expected to be an efficient and robust catalyst for large-scale applications.
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Affiliation(s)
- Min Zhu
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
| | - Xiaojing Bai
- College of Materials Science and Engineering, Anyang Institute of Technology, Anyang, Henan 455000, PR China
| | - Qing Yan
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, PR China; College of Chemical & Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Yongde Yan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Kai Zhu
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Ke Ye
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Jun Yan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Dianxue Cao
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Xiaomei Huang
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Guiling Wang
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
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Jiang Q, Wang L, Wang Y, Qin M, Wu R, Huang Z, Yang HJ, Li Y, Zhou T, Hu J. Rational design of MoSe 2 nanosheet-coated MOF-derived N-doped porous carbon polyhedron for potassium storage. J Colloid Interface Sci 2021; 600:430-439. [PMID: 34023704 DOI: 10.1016/j.jcis.2021.05.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 11/15/2022]
Abstract
For potassium-ion battery (PIB), it remains a huge challenge to develop an appropriate anode material to compensate the large radius of K+. MoSe2 shows great potential for efficient K+ insertion/extraction due to its unique lamellar structures with an interlayer spacing of 6.46 Å. However, pure MoSe2 has low electronic conductivity and agglomerates during long-term cycling. In the present work, MoSe2 nanosheets were fabricated on the N-doped porous carbon polyhedron (NPCP). The obtained product was designated as NPCP@MoSe2 and functioned as anode materials for PIBs. NPCP@MoSe2 displayed a promising reversible capacity (325 mAh/g at 100 mA/g after 80 cycles), long-term cycling performance (128 mAh/g at 500 mA/g after 800 cycles), and superior rate property at 5000 mA/g. The enhanced electrochemical performance of NPCP@MoSe2 could be attributed to the rational design of hybrid structures. Notably, the hollow NPCP provide a large contact area for the interactions among the electrolytes and electro-active materials as well as partly buffer the volume expansion. The synergistic effects between MoSe2 and NPCP could mitigate the agglomeration of MoSe2 nanosheets. Besides, the uniformly doping N elements enhanced the conductivity of the carbon matrix, and the N-group also provided potential binding active sites for K-ion accommodation. This work paves the ideas for the design of novel anode materials with high specific capacity, good cycling stability and outstanding rate capability for PIBs.
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Affiliation(s)
- Qingqing Jiang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China.
| | - Lin Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Yan Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Meihua Qin
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Rui Wu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Zhengxi Huang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Hai-Jian Yang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongxiu Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Tengfei Zhou
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
| | - Juncheng Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
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Zhu XD, Fan XH, Gao J, Qiu SY, Zhang LS, Gu LL, Wang C, Wang KX, Mao YC. Controllable construction of Ag/MoSe2 hybrid architectures for efficient hydrogen evolution and advanced lithium anode. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116404] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Chang L, Sun Z, Hu YH. 1T Phase Transition Metal Dichalcogenides for Hydrogen Evolution Reaction. ELECTROCHEM ENERGY R 2021. [DOI: 10.1007/s41918-020-00087-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Yu Z, Xu J, Feng S, Song X, Bondarchuk O, Faria JL, Ding Y, Liu L. Rhodium single-atom catalysts with enhanced electrocatalytic hydrogen evolution performance. NEW J CHEM 2021. [DOI: 10.1039/d1nj00210d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Rhodium (Rh) single-atom catalysts supported on activated carbon (Rh1/AC) are prepared via a “top-down” chemical reaction-induced dispersion process and show outstanding electrocatalytic performance for the hydrogen evolution reaction.
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Affiliation(s)
- Zhipeng Yu
- International Iberian Nanotechnology Laboratory (INL)
- Avenida Mestre Jose Veiga
- Braga 4715-330
- Portugal
- Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials (LSRE-LCM)
| | - Junyuan Xu
- International Iberian Nanotechnology Laboratory (INL)
- Avenida Mestre Jose Veiga
- Braga 4715-330
- Portugal
| | - Siquan Feng
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xiangen Song
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Oleksandr Bondarchuk
- International Iberian Nanotechnology Laboratory (INL)
- Avenida Mestre Jose Veiga
- Braga 4715-330
- Portugal
| | - Joaquim L. Faria
- Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials (LSRE-LCM)
- Faculdade de Engenharia
- Universidade do Porto
- Rua Dr. Roberto Frias
- Porto 4200-465
| | - Yunjie Ding
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Lifeng Liu
- International Iberian Nanotechnology Laboratory (INL)
- Avenida Mestre Jose Veiga
- Braga 4715-330
- Portugal
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Akbayrak M, Önal AM. Binder- free iridium based electrocatalysts: Facile preparation, high activity and outstanding stability for hydrogen evolution reaction in acidic medium. J Colloid Interface Sci 2020; 580:11-20. [DOI: 10.1016/j.jcis.2020.06.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 11/26/2022]
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Sharma MD, Mahala C, Basu M. 2D Thin Sheet Heterostructures of MoS2 on MoSe2 as Efficient Electrocatalyst for Hydrogen Evolution Reaction in Wide pH Range. Inorg Chem 2020; 59:4377-4388. [DOI: 10.1021/acs.inorgchem.9b03445] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mamta Devi Sharma
- Department of Chemistry, BITS Pilani, Pilani Campus, Rajasthan-333031, India
| | - Chavi Mahala
- Department of Chemistry, BITS Pilani, Pilani Campus, Rajasthan-333031, India
| | - Mrinmoyee Basu
- Department of Chemistry, BITS Pilani, Pilani Campus, Rajasthan-333031, India
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Anderson A, Hegarty C, Casimero C, Davis J. Electrochemically Controlled Dissolution of Nanocarbon-Cellulose Acetate Phthalate Microneedle Arrays. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35540-35547. [PMID: 31490645 PMCID: PMC7006997 DOI: 10.1021/acsami.9b09674] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 09/06/2019] [Indexed: 05/27/2023]
Abstract
Transdermal microneedles have captured the attention of researchers in relation to a variety of applications, and silicone-based molds required to produce these systems are now widely available and can be readily manufactured on the lab bench. The production of nanocomposite microneedle arrays through micromolding techniques is described. The formulation of nanoparticulate carbon along with pH sensitive cellulose acetate phthalate as a polymeric binder is shown to produce conductive microneedles whose swelling/dissolution properties can be controlled electrochemically. Through exploiting hydrogen evolution at the microneedle array, changes in local pH can induce swelling within the needle structure and could lay the foundations for a new approach to the smart device controlled delivery of therapeutic agents. The surface modification of the carbon needles with palladium and cysteine is critically assessed from sensing and drug delivery perspectives.
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