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Kundu J, Kwon T, Lee K, Choi S. Exploration of metal-free 2D electrocatalysts toward the oxygen electroreduction. EXPLORATION (BEIJING, CHINA) 2024; 4:20220174. [PMID: 39175883 PMCID: PMC11335471 DOI: 10.1002/exp.20220174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/21/2023] [Indexed: 08/24/2024]
Abstract
The advancement of economical and readily available electrocatalysts for the oxygen reduction reaction (ORR) holds paramount importance in the advancement of fuel cells and metal-air batteries. Recently, 2D non-metallic materials have obtained substantial attention as viable alternatives for ORR catalysts due to their manifold advantages, encompassing low cost, ample availability, substantial surface-to-volume ratio, high conductivity, exceptional durability, and competitive activity. The augmented ORR performances observed in metal-free 2D materials typically arise from heteroatom doping, defects, or the formation of heterostructures. Here, the authors delve into the realm of electrocatalysts for the ORR, pivoting around metal-free 2D materials. Initially, the merits of metal-free 2D materials are explored and the reaction mechanism of the ORR is dissected. Subsequently, a comprehensive survey of diverse metal-free 2D materials is presented, tracing their evolutionary journey from fundamental concepts to pragmatic applications in the context of ORR. Substantial importance is given on the exploration of various strategies for enhancing metal-free 2D materials and assessing their impact on inherent material performance, including electronic properties. Finally, the challenges and future prospects that lie ahead for metal-free 2D materials are underscored, as they aspire to serve as efficient ORR electrocatalysts.
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Affiliation(s)
- Joyjit Kundu
- Department of Chemistry and Green‐Nano Materials Research CenterKyungpook National UniversityDaeguRepublic of Korea
| | - Taehyun Kwon
- Department of Chemistry and Research Institute of Basic SciencesIncheon National UniversityIncheonRepublic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural SciencesKorea UniversitySeoulRepublic of Korea
| | - Sang‐Il Choi
- Department of Chemistry and Green‐Nano Materials Research CenterKyungpook National UniversityDaeguRepublic of Korea
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Dai L, Xie Y, Zhang Y, Wang Y. Treatment of bisphenol pollutant in water by N,P-co-doped carbon nanosheet: Fast degradation, toxicity elimination and reaction mechanism investigation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121586. [PMID: 37044253 DOI: 10.1016/j.envpol.2023.121586] [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: 02/23/2023] [Revised: 04/01/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Metal-free carbon catalysts perform well in peroxymonosulfate-based advanced oxidation process for the treatment of organic pollutant-containing wastewater. Herein, a natural biomolecule of adenosine triphosphate (ATP), containing abundant N and P elements, served as sole precursor to prepare N,P-co-doped carbon through one-step anoxic pyrolysis, which was applied as peroxymonosulfate activator to treat bisphenol-contaminated water. Owing to the endogenous N and P elements in ATP, in-situ doping was achieved for the prepared carbon material with excellent doping effect, such as high doping amount and numerous defects. During pyrolysis process, the generated gases facilitated the exfoliation of carbon structure, resulting in a nanosheet-like morphology with large specific surface area, e.g., 852.75 m2 g-1 for NPCN-900 sample obtained at 900 °C. Benefiting from the structural modulation brought by N,P co-doping, typical sample of NPCN-900 presented excellent catalytic performance towards bisphenol AF (BPAF) degradation through PMS activation. An apparent reaction rate constant of 0.4115 min-1 was calculated under the investigated reaction conditions. Further studies indicated that 1O2, surface-bound •OH and SO4-• worked together in NPCN-900/PMS system for BPAF degradation. Graphitic N, pyrrolic N, CO groups, defect structure and the doped P atoms in NPCN-900 contributed to PMS activation. It was also important that the toxicity of BPAF solution could be preliminarily eliminated after treatment by NPCN-900/PMS system, which was verified by ecotoxicity assessments through ECOSAR program and green algae growth experiments.
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Affiliation(s)
- Linli Dai
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yi Xie
- Moutai Institute, Renhuai, 564507, China
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yabo Wang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
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Costa TLG, Vieira MA, Gonçalves GR, Cipriano DF, Lacerda V, Gonçalves AS, Scopel WL, de Siervo A, Freitas JCC. Combined computational and experimental study about the incorporation of phosphorus into the structure of graphene oxide. Phys Chem Chem Phys 2023; 25:6927-6943. [PMID: 36805087 DOI: 10.1039/d2cp03666e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Phosphorus-containing graphene-based hybrids are materials with outstanding properties for diverse applications. In this work, an easy route to produce phosphorus-graphene oxide hybrid materials is described, involving the use of variable amounts of H3PO4 and H2SO4 during the reaction of oxidation of a graphitic precursor. The physical and chemical features of the hybrids change significantly with the variation in the acid amounts used in the syntheses. XPS and solid-state 13C and 31P NMR results show that the hybrids contain large amounts of oxygen functional groups, with the phosphorus incorporation proceeding mostly through the formation of phosphate-like linkages and other functions with C-O-P bonds. The experimental findings are supported by DFT calculations, which allow the assessment of the energetics and the geometry of the interaction between phosphate groups and graphene-based models; these calculations are also used to predict the chemical shifts in the 31P and 13C NMR spectra of the models, which show good agreement with the experimentally observed solid-state NMR spectra.
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Affiliation(s)
- Tainara L G Costa
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil.
| | - Mariana A Vieira
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil. .,Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Gustavo R Gonçalves
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil.
| | - Daniel F Cipriano
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil.
| | - Valdemar Lacerda
- Federal Institute of Education, Science and Technology of Espírito Santo (IFES), Av. Min. Salgado Filho, 1000, 29106-010, Vila Velha, ES, Brazil
| | - Arlan S Gonçalves
- Laboratory of Organic Chemistry, Department of Chemistry, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil
| | - Wanderlã L Scopel
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil.
| | - Abner de Siervo
- Institute of Physics Gleb Wataghin - State University of Campinas (UNICAMP), Rua Sergio Buarque de Holanda 777, 13083-859, Campinas, SP, Brazil
| | - Jair C C Freitas
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo (UFES), Av. Fernando Ferrari, 514, 29075-910, Vitória, ES, Brazil.
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Denis PA. Heteroatom Codoped Graphene: The Importance of Nitrogen. ACS OMEGA 2022; 7:45935-45961. [PMID: 36570263 PMCID: PMC9773818 DOI: 10.1021/acsomega.2c06010] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Although graphene has exceptional properties, they are not enough to solve the extensive list of pressing world problems. The substitutional doping of graphene using heteroatoms is one of the preferred methods to adjust the physicochemical properties of graphene. Much effort has been made to dope graphene using a single dopant. However, in recent years, substantial efforts have been made to dope graphene using two or more dopants. This review summarizes all the hard work done to synthesize, characterize, and develop new technologies using codoped, tridoped, and quaternary doped graphene. First, I discuss a simple question that has a complicated answer: When can an atom be considered a dopant? Then, I briefly discuss the single atom doped graphene as a starting point for this review's primary objective: codoped or dual-doped graphene. I extend the discussion to include tridoped and quaternary doped graphene. I review most of the systems that have been synthesized or studied theoretically and the areas in which they have been used to develop new technologies. Finally, I discuss the challenges and prospects that will shape the future of this fascinating field. It will be shown that most of the graphene systems that have been reported involve the use of nitrogen, and much effort is needed to develop codoped graphene systems that do not rely on the stabilizing effects of nitrogen. I expect that this review will contribute to introducing more researchers to this fascinating field and enlarge the list of codoped graphene systems that have been synthesized.
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Maouche C, Wang Y, Cheng C, Wang W, Li Y, Qureshi WA, Huang P, Amjad A, Zhou Y, Yang J. Sulfur doped Fe N C catalysts derived from Dual-Ligand zeolitic imidazolate framework for the oxygen reduction reaction. J Colloid Interface Sci 2022; 623:146-154. [DOI: 10.1016/j.jcis.2022.04.157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 01/25/2023]
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Zhang T, Zhao Z, Li T, Diao Q, Lv L, Li Z. A highly efficient electrocatalyst for oxygen reduction reaction: Spinel MnCo2O4 nanoparticles supported on three-dimensional Nitrogen-doped graphene material with interconnected hierarchical porous nanostructure. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hierarchical Nanoflowers of MgFe2O4, Bentonite and B-,P- Co-Doped Graphene Oxide as Adsorbent and Photocatalyst: Optimization of Parameters by Box–Behnken Methodology. Int J Mol Sci 2022; 23:ijms23179678. [PMID: 36077079 PMCID: PMC9455985 DOI: 10.3390/ijms23179678] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/22/2022] [Accepted: 08/22/2022] [Indexed: 11/29/2022] Open
Abstract
In the present study, nanocomposites having hierarchical nanoflowers (HNFs) -like morphology were synthesized by ultra-sonication approach. HNFs were ternary composite of MgFe2O4 and bentonite with boron-, phosphorous- co-doped graphene oxide (BPGO). The HNFs were fully characterized using different analytical tools viz. X-ray photoelectron spectroscopy, scanning electron microscopy, energy dispersion spectroscopy, transmission electron microscopy, X-ray diffraction, vibrating sample magnetometry and Mössbauer analysis. Transmission electron micrographs showed that chiffon-like BPGO nanosheets were wrapped on the MgFe2O4-bentonite surface, resulting in a porous flower-like morphology. The red-shift in XPS binding energies of HNFs as compared to MgFe2O4-bentoniteand BPGO revealed the presence of strong interactions between the two materials. Box–Behnken statistical methodology was employed to optimize adsorptive and photocatalytic parameters using Pb(II) and malathion as model pollutants, respectively. HNFs exhibited excellent adsorption ability for Pb(II) ions, with the Langmuir adsorption capacity of 654 mg g−1 at optimized pH 6.0 and 96% photocatalytic degradation of malathion at pH 9.0 as compared to MgFe2O4-bentonite and BPGO. Results obtained in this study clearly indicate that HNFs are promising nanocomposite for the removal of inorganic and organic contaminants from the aqueous solutions.
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Barman J, Deka N, Rudra S, Dutta GK. Promising N, P Co‐doped Porous Carbon Materials as Metal‐Free Electrocatalyst for Oxygen Reduction Reaction in Alkaline Medium. ChemistrySelect 2022. [DOI: 10.1002/slct.202200570] [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]
Affiliation(s)
- Jayshree Barman
- Department of Chemistry National Institute of Technology Meghalaya Bijni Complex, Laitumkhrah Shillong 793003 Meghalaya India
| | - Namrata Deka
- Department of Chemistry National Institute of Technology Meghalaya Bijni Complex, Laitumkhrah Shillong 793003 Meghalaya India
| | - Siddheswar Rudra
- Department of Chemistry National Institute of Technology Meghalaya Bijni Complex, Laitumkhrah Shillong 793003 Meghalaya India
| | - Gitish K. Dutta
- Department of Chemistry National Institute of Technology Meghalaya Bijni Complex, Laitumkhrah Shillong 793003 Meghalaya India
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Zhang T, han Q, Li T, Lv L, Luo W, Li Z. An efficient electrocatalyst toward oxygen reduction reaction: State-of-the-art of hierarchical porous nanostructure of Mn3O4 supported on three-dimensional graphene. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2021.115898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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