1
|
Graphene-Supported Fe–N Catalysts for Activation of Persulfate for Trichlorophenol Degradation by Surface Radicals. Catal Letters 2022. [DOI: 10.1007/s10562-022-04198-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
2
|
Chai D, Min X, Harada T, Nakanishi S, Zhang X. Covalent triazine framework anchored with atomically dispersed iron as an efficient catalyst for advanced oxygen reduction. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Li A, Nicolae SA, Qiao M, Preuss K, Szilágyi PA, Moores A, Titirici M. Homogenous Meets Heterogenous and Electro‐Catalysis: Iron‐Nitrogen Molecular Complexes within Carbon Materials for Catalytic Applications. ChemCatChem 2019. [DOI: 10.1002/cctc.201900910] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alain Li
- Centre for Green Chemistry and Catalysis Department of ChemistryMcGill University 801 Sherbrooke St West Montreal H3A 0B8 Canada
| | - Sabina A. Nicolae
- Queen Mary University of LondonSchool of Engineering and Materials Science Mile End Road London E1 4NS UK
| | - Mo Qiao
- Queen Mary University of LondonMaterials Research Institute Mile End Road London E1 4NS UK
| | - Kathrin Preuss
- Queen Mary University of LondonSchool of Engineering and Materials Science Mile End Road London E1 4NS UK
- Queen Mary University of LondonMaterials Research Institute Mile End Road London E1 4NS UK
| | - Petra A. Szilágyi
- Queen Mary University of LondonSchool of Engineering and Materials Science Mile End Road London E1 4NS UK
- Queen Mary University of LondonMaterials Research Institute Mile End Road London E1 4NS UK
| | - Audrey Moores
- Centre for Green Chemistry and Catalysis Department of ChemistryMcGill University 801 Sherbrooke St West Montreal H3A 0B8 Canada
| | - Maria‐Magdalena Titirici
- Queen Mary University of LondonSchool of Engineering and Materials Science Mile End Road London E1 4NS UK
- Queen Mary University of LondonMaterials Research Institute Mile End Road London E1 4NS UK
- Department of Chemical Engineering Imperial College LondonSouth Kensington Campus London SE7 2AZ UK
| |
Collapse
|
4
|
Wang Y, Liu X, Lu Z, Liu T, Zhao L, Ding F, Zou P, Wang X, Zhao Q, Rao H. Molecularly imprinted polydopamine modified with nickel nanoparticles wrapped with carbon: fabrication, characterization and electrochemical detection of uric acid. Mikrochim Acta 2019; 186:414. [PMID: 31187172 DOI: 10.1007/s00604-019-3521-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/19/2019] [Indexed: 01/12/2023]
Abstract
An electrochemical sensor is described for determination of uric acid (UA). Carbon-enwrapped nickel nanoparticles (Ni@BC) were coated with polydopamine (PDA) that was molecularly imprinted with UA. The biomass carbon (BC) was synthesized by one-step solid-state pyrolysis from leaves of Firmiana platanifolia. The imprinted polymer was obtained by electrodeposition of DA as the monomer. The amount of monomer, the scan cycles, pH value and adsorption time were optimized. Furthermore, the selectivity of the MIP for UA on a glassy carbon electrode (GCE) was evaluated by selectivity tests. The differential pulse voltammetric responses to UA with and without interferents were consistent. The modified GCE has a linear response in the 0.01-30 μM UA concentration range, and the limit of detection is 8 nM. The MIP electrode was applied to the analysis of UA in urine for which the initial concentrations were determined by the phosphotungstic acid kit. Recoveries ranged from 91.3 to 113.4%, with relative standard deviations between 1.3 and 9.7% (n = 3). Graphical abstract Schematic presentation of electrochemical detection of uric acid by molecularly imprinted polydopamine modified with nickel nanoparticles wrapped with carbon (Ni@BC-MIP).
Collapse
Affiliation(s)
- Yanying Wang
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Xin Liu
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Zhiwei Lu
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Tao Liu
- College of Information Engineering, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Lijun Zhao
- Ministry of Agriculture and Rural Affairs Laboratory of Risk Assessment for Quality and Safety of Livestock and Poultry, Chengdu, 610065, People's Republic of China
| | - Fang Ding
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Ping Zou
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Xianxiang Wang
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Qingbiao Zhao
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Optoelectronics, East China Normal University, Shanghai, 200241, People's Republic of China.
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China.
| |
Collapse
|
5
|
Methanol-Tolerant M–N–C Catalysts for Oxygen Reduction Reactions in Acidic Media and Their Application in Direct Methanol Fuel Cells. Catalysts 2018. [DOI: 10.3390/catal8120650] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Direct methanol fuel cells (DMFCs) are emerging technologies for the electrochemical conversion of the chemical energy of a fuel (methanol) directly into electrical energy, with a low environmental impact and high efficiency. Yet, before this technology can reach a large-scale diffusion, specific issues must be solved, in particular, the high cost of the cell components. In a direct methanol fuel cell system, high capital costs are mainly derived from the use of noble metal catalysts; therefore, the development of low-cost electro-catalysts, satisfying the target requirements of high performance and durability, represents an important challenge. The research is currently addressed to the development of metal–nitrogen–carbon (M–N–C) materials as cheap and sustainable catalysts for the oxygen reduction reaction (ORR) in an acid environment, for application in polymer electrolyte fuel cells fueled by hydrogen or alcohol. In particular, this mini-review summarizes the recent advancements achieved in DMFCs using M–N–C catalysts. The presented analysis is restricted to M–N–C catalysts mounted at the cathode of a DMFC or investigated in rotating disk electrode (RDE) configuration for the ORR in the presence of methanol in order to study alcohol tolerance. The main synthetic routes and characteristics of the catalysts are also presented.
Collapse
|
6
|
Gokhale R, Chen Y, Serov A, Artyushkova K, Atanassov P. Direct synthesis of platinum group metal-free Fe-N-C catalyst for oxygen reduction reaction in alkaline media. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.09.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
8
|
Sun H, Su H, Ma X, Zhang P, Zhang X, Dai X, Gao J, Chen C, Sun SG. Fe/IRMOF-3 derived porous carbons as non-precious metal electrocatalysts with high activity and stability towards oxygen reduction reaction. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Bukola S, Merzougui B, Akinpelu A, Zeama M. Cobalt and Nitrogen Co-Doped Tungsten Carbide Catalyst for Oxygen Reduction and Hydrogen Evolution Reactions. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.074] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
11
|
Merzougui B, Bukola S, Zaffou R. Further Understanding of Nitrogen-Doped Carbon Catalytic Property towards Oxygen Reduction Reaction (ORR). ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.matpr.2016.01.113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
12
|
Quantifying the density and utilization of active sites in non-precious metal oxygen electroreduction catalysts. Nat Commun 2015; 6:8618. [PMID: 26486465 PMCID: PMC4639811 DOI: 10.1038/ncomms9618] [Citation(s) in RCA: 232] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 09/12/2015] [Indexed: 12/22/2022] Open
Abstract
Carbon materials doped with transition metal and nitrogen are highly active, non-precious metal catalysts for the electrochemical conversion of molecular oxygen in fuel cells, metal air batteries, and electrolytic processes. However, accurate measurement of their intrinsic turn-over frequency and active-site density based on metal centres in bulk and surface has remained difficult to date, which has hampered a more rational catalyst design. Here we report a successful quantification of bulk and surface-based active-site density and associated turn-over frequency values of mono- and bimetallic Fe/N-doped carbons using a combination of chemisorption, desorption and 57Fe Mössbauer spectroscopy techniques. Our general approach yields an experimental descriptor for the intrinsic activity and the active-site utilization, aiding in the catalyst development process and enabling a previously unachieved level of understanding of reactivity trends owing to a deconvolution of site density and intrinsic activity. Iron and nitrogen doped carbon materials are widely studied electrocatalysts, however measurement of features such as intrinsic turn-over frequency and active site utilization has proved difficult. Here, the authors use a combination of chemisorption and spectroscopy techniques to determine these properties.
Collapse
|
13
|
Akinpelu A, Merzougui B, Bukola S, Azad AM, Basheer RA, Swain GM, Chang Q, Shao M. A Pt-free Electrocatalyst Based on Pyrolized Vinazene-Carbon Composite for Oxygen Reduction Reaction. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|