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Khan S, Noor T, Iqbal N, Pervaiz E, Yaqoob L. A zeolitic imidazolate framework (ZIF-67) and graphitic carbon nitride (g-C 3N 4) composite based efficient electrocatalyst for overall water-splitting reaction. RSC Adv 2023; 13:24973-24987. [PMID: 37614795 PMCID: PMC10442768 DOI: 10.1039/d3ra04783k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/16/2023] [Indexed: 08/25/2023] Open
Abstract
Designing of non-noble, cost-effective, sustainable catalysts for water splitting is essential for hydrogen production. In this research work, ZIF-67, g-C3N4, and their composite (1, 3, 5, 6, 8 wt% g-C3N4@ZIF-67) are synthesized, and various techniques, XRD, FTIR, SEM, EDX and BET are used to examine their morphological properties for electrochemical water-splitting. The linkage of ZIF-67 with g-C3N4 synergistically improves the electrochemical kinetics. An appropriate integration of g-C3N4 in ZIF-67 MOF improves the charge transfer between the electrode and electrolyte and makes it a suitable option for electrochemical applications. In alkaline media, the composite of ZIF-67 MOF with g-C3N4 over a Ni-foam exhibits a superior catalyst activity for water splitting application. Significantly, the 3 wt% g-C3N4@ZIF67 composite material reveals remarkable results with low overpotential values of -176 mV@10 mA cm-2, 152 mV@10 mA cm-2 for HER and OER. The catalyst remained stable for 24 h without distortion. The 3 wt% composite also shows a commendable performance for overall water-splitting with a voltage yield of 1.34 v@10 mA cm-2. The low contact angle (54.4°) proves the electrocatalyst's hydrophilic nature. The results of electrochemical water splitting illustrated that 3 wt% g-C3N4@ZIF-67 is an electrically conductive, stable, and hydrophilic-nature catalyst and is suggested to be a promising candidate for electrochemical water-splitting application.
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Affiliation(s)
- Sadia Khan
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Tayyaba Noor
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Naseem Iqbal
- U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan
| | - Erum Pervaiz
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Lubna Yaqoob
- U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan
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Pei Z, Qin T, Tian R, Ou Y, Guo X. Construction of an Amethyst-like MoS 2@Ni 9S 8/Co 3S 4 Rod Electrocatalyst for Overall Water Splitting. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2302. [PMID: 37630887 PMCID: PMC10459789 DOI: 10.3390/nano13162302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023]
Abstract
Transition metal sulphide electrocatalytic materials possess the bright overall water-splitting performance of practical electrocatalytic technologies. In this study, an amethyst-like MoS2@Ni9S8/Co3S4 rod electrocatalyst was constructed via a one-step hydrothermal method with in-situ-grown ZIF-67 nanoparticles on nickel foam (NF) as a precursor. The rational design and synthesis of MoS2@Ni9S8/Co3S4 endow the catalyst with neat nanorods morphology and high conductivity. The MoS2@Ni9S8/Co3S4/NF with the amethyst-like rod structure exposes abundant active sites and displays fast electron-transfer capability. The resultant MoS2@Ni9S8/Co3S4/NF exhibits outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalytic activities, with low overpotentials of 81.24 mV (HER) at 10 mA cm-2 and 159.67 mV (OER) at 50 mA cm-2 in 1.0 M KOH solution. The full-cell voltage of overall water splitting only achieves 1.45 V at 10 mA cm-2. The successful preparation of the amethyst-like MoS2@Ni9S8/Co3S4 rod electrocatalyst provides a reliable reference for obtaining efficient electrocatalysts for overall water splitting.
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Affiliation(s)
- Zhen Pei
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China; (Z.P.); (T.Q.); (R.T.); (Y.O.)
| | - Tengteng Qin
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China; (Z.P.); (T.Q.); (R.T.); (Y.O.)
| | - Rui Tian
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China; (Z.P.); (T.Q.); (R.T.); (Y.O.)
| | - Yangxin Ou
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China; (Z.P.); (T.Q.); (R.T.); (Y.O.)
| | - Xingzhong Guo
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China; (Z.P.); (T.Q.); (R.T.); (Y.O.)
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
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Fan C, Zhu H, Zhang J, Jiang H, Chen R. Hollow Co@HCN Derived from ZIF-67 as a Highly Efficient Catalyst for Hydrogenation of o-Cresol to o-Methyl Cyclohexanol. Catal Letters 2023. [DOI: 10.1007/s10562-023-04304-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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García R, Rodríguez E, Díez MA, Arenillas A, Villanueva SF, Rey-Raap N, Cuesta C, López-Antón MA, Martínez-Tarazona MR. Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1336. [PMID: 36836966 PMCID: PMC9963879 DOI: 10.3390/ma16041336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
This work focuses on carbon foams, whose peculiarity is a predominant open macroporous cellular network that can be provided with tailored texture and morphology by the modification of the preparation process. The goal was to obtain macroporous carbonaceous structures capable of being activated by following a simple thermo-foaming procedure using a few reagents. With this purpose in mind, carbon foams with different textural properties were synthesized from sucrose using two foaming processes: at atmospheric pressure and in a pressurized reactor. Iron and silver nitrates added to sucrose gave rise, after carbonization, to materials with iron oxides and elemental silver particles nano-dispersed in the carbon matrix and promoted microporosity in both cases and mesoporosity in the case of iron nitrate. Iron nitrate also catalyzes the graphitization of the carbon material during carbonization. All these findings show the potential of sucrose thermo-foaming process as a viable and sustainable path to produce versatile carbon materials, capable of being used in various applications.
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Liao W, Tong X, Zhai Y, Dai H, Fu Y, Qian M, Wu G, Chen T, Yang Q. ZIF-67-derived nanoframes as efficient bifunctional catalysts for overall water splitting in alkaline medium. Dalton Trans 2022; 51:7561-7570. [PMID: 35507832 DOI: 10.1039/d2dt00828a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In order to lower energy consumption it is critical to develop highly efficient and stable non-precious metal bifunctional catalysts. In this study, we found that rational design of novel nanostructures is able to increase the number of active sites, conductivity and accelerate electron transfer, thus promoting enhanced performance of the catalyst. We successfully synthesized carbon nanotubes (CNTs) containing a hollow polyhedral (CNTHPs) structure through annealing, etching and phosphating. The unique hollow shape not only provides a stable structure but also facilitates mass and charge transfer. Thus, CoP/CNTHPs can catalyze the hydrogen and oxygen evolution reactions effectively with overpotentials of 147 and 238 mV at 10 mA cm-2. Simultaneously, CoP/CNTHPs only needs a voltage of 1.54 V to attain a current density of 10 mA cm-2 in the electrocatalytic water splitting process, demonstrating its bifunctional activity. Furthermore, the electrolytic catalytic performance does not weaken significantly after 12 hours of electrolysis, demonstrating excellent stability. Overall, this research offers useful insights into rational design of high-performance non-noble metal catalysts.
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Affiliation(s)
- Wenhao Liao
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Xianfeng Tong
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Yali Zhai
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Haojiang Dai
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Yingyan Fu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Min Qian
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Geng Wu
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Tianyun Chen
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
| | - Qinghua Yang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China.
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