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Yoshihara N, Lopes M, Santos I, Kopke B, Almeida C, Araújo J, Fechine PBA, Santos-Oliveira R, Sant'Anna C. Graphitic carbon nitride as a novel anticancer agent: potential mechanisms and efficacy in prostate cancer and glioblastoma treatment. Biomater Sci 2024. [PMID: 39292186 DOI: 10.1039/d4bm01025f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
Carbon-derived compounds are gaining traction in the scientific community because of their unique properties, such as conductivity and strength, and promising innovations in technology and medicine. Graphitic nitride carbon (g-C3N4) stands out among these compounds because of its potential in antitumor therapies. This study aimed to assess g-C3N4's antitumor potential and cytotoxic mechanisms. Prostate cancer (DU-145) and glioblastoma (U87) cell lines were used to evaluate antitumor effects, whereas RAW 264.7 and HFF-1 non-tumor cells were used for selectivity evaluation. The synthesized g-C3N4 particles underwent comprehensive characterization, including the assessment of particle size, morphology, and oxygen content, employing various techniques, such as X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, and atomic force microscopy. The results indicated that g-C3N4 significantly affected tumor cell proliferation and viability, exhibiting high cytotoxicity within 48 h. In non-tumor cells, minimal effects on proliferation were observed, except for damage to the cell membranes of RAW 264.7 cells. Moreover, g-C3N4 changed the cell morphology and ultrastructure, affecting cell migration in U87 cells and potentially enhancing migration in RAW 264.7 cells. Biochemical assays in Balb/C mice revealed alterations in alanine aminotransferase, aspartate aminotransferase, and amylase levels. In conclusion, g-C3N4 demonstrated promising antitumor effects with minimal toxicity to non-tumor cells, suggesting its potential in neoplasm treatment.
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Affiliation(s)
- Natalia Yoshihara
- National Institute of Metrology, Quality and Technology, Eukaryotic Cell Biology Laboratory, Duque de Caxias-RJ, 24250020, Brazil.
| | - Michelle Lopes
- National Institute of Metrology, Quality and Technology, Eukaryotic Cell Biology Laboratory, Duque de Caxias-RJ, 24250020, Brazil.
| | - Isabel Santos
- National Institute of Metrology, Quality and Technology, Eukaryotic Cell Biology Laboratory, Duque de Caxias-RJ, 24250020, Brazil.
| | - Beatriz Kopke
- National Institute of Metrology, Quality and Technology, Eukaryotic Cell Biology Laboratory, Duque de Caxias-RJ, 24250020, Brazil.
| | - Clara Almeida
- National Institute of Metrology, Quality and Technology, Laboratory of Microscopy Dimat, Duque de Caxias-RJ, 24250020, Brazil
| | - Joyce Araújo
- National Institute of Metrology, Quality and Technology, Laboratory of Microscopy Dimat, Duque de Caxias-RJ, 24250020, Brazil
| | - Pierre B A Fechine
- Group of Chemistry of Advanced Materials (GQMat)-Department of Analytical Chemistry and Physical-Chemistry, Federal University of Ceará, Fortaleza-CE, 451-970, Brazil
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New, Brazil
- Radiopharmaceuticals, Rio de Janeiro-RJ, 21941906, Brazil
- Rio de Janeiro State University, Laboratory of Nanoradiopharmaceuticals, Rio de Janeiro, 23070200, Brazil
| | - Celso Sant'Anna
- National Institute of Metrology, Quality and Technology, Eukaryotic Cell Biology Laboratory, Duque de Caxias-RJ, 24250020, Brazil.
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Isa EDM, Jusoh NWC, Rodzi AAM. Enhanced simultaneous degradation of simulated dyes using ZnO/GCN heterojunction photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:116921-116933. [PMID: 37178288 DOI: 10.1007/s11356-023-27576-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/08/2023] [Indexed: 05/15/2023]
Abstract
The scarcity of water leads to research nowadays to focus on techniques for treating wastewater. Photocatalysis emerged as a technique of interest due to its nature of friendliness. It utilizes light and catalyst to degrade the pollutants. One of the popular catalysts to be used is zinc oxide (ZnO), but its usage is limited due to the high recombination rate of electron-hole pair. Herein, in this study, ZnO is modified with graphitic carbon nitride (GCN), and the GCN loading amount was varied to study the impact on photocatalytic degradation of mixed dye solution. To the best of our knowledge, this is the first work that reports on the degradation of mixed dye solution using modified ZnO with GCN. Structural analysis showed that GCN is present in the composites which proves the success of the modification. Photocatalytic activity revealed that the composite with 5 wt% loading of GCN showed the best activity at a catalyst dosage of 1 g/L with degradation rates of 0.0285, 0.0365, 0.0869, and 0.1758 min-1 for methyl red, methyl orange, rhodamine B, and methylene blue dyes, respectively. This observation is expected due to the formation of heterojunction between ZnO and GCN which creates a synergistic effect and thus led to an improvement in the photocatalytic activity. Based on these results, ZnO modified with GCN has a good potential to be used in the treatment of textile wastewater which consists of various dye mixtures.
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Affiliation(s)
- Eleen Dayana Mohamed Isa
- Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Nurfatehah Wahyuny Che Jusoh
- Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
- Advanced Materials Research Group, Center of Hydrogen Energy, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, Malaysia.
| | - Amir Awalludin Mohamad Rodzi
- Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
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Sivakumar S, Thangadurai TD, Nataraj D. Role of Interfacial AuNPs in Solid-state Direct Z-scheme MoS2/Au/g-C3N4 Heterojunction Nanocomposite’s Pollutant Degradation activity under sunlight. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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4
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Kubanaliev T, Eroglu Z, Ozer MS, Metin Ö. The effect of N-vacancy on the photocatalytic activity of graphitic carbon nitride in the oxidative Mannich reaction. Catal Sci Technol 2023. [DOI: 10.1039/d3cy00046j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
N-vacancy g-CN was used in Mannich oxidative reaction as a photocatalyst, having mid-gap states that enhance reaction kinetics. This facile photocatalyst enabled successful formation of challenging THIQ with EWG and chemo-selectivity on C–C bond.
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Nazri NAM, Halim SNQSA, Karim S. Biochar-Based Graphitic Carbon Nitride Derived from Biomass Waste for Degradation of Pyrene. ADVANCED STRUCTURED MATERIALS 2023:51-62. [DOI: 10.1007/978-3-031-21959-7_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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6
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Liu C, Liu J, Godin R. ALD-Deposited NiO Approaches the Performance of Platinum as a Hydrogen Evolution Cocatalyst on Carbon Nitride. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Chang Liu
- Department of Chemistry, The University of British Columbia, 3247 University Way, Kelowna, British ColumbiaV1V 1V7, Canada
| | - Jian Liu
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, British ColumbiaV1V 1V7, Canada
| | - Robert Godin
- Department of Chemistry, The University of British Columbia, 3247 University Way, Kelowna, British ColumbiaV1V 1V7, Canada
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Santiago-Aliste A, Sánchez-Hernández E, Langa-Lomba N, González-García V, Casanova-Gascón J, Martín-Gil J, Martín-Ramos P. Multifunctional Nanocarriers Based on Chitosan Oligomers and Graphitic Carbon Nitride Assembly. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8981. [PMID: 36556785 PMCID: PMC9785438 DOI: 10.3390/ma15248981] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/27/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
In this study, a graphitic carbon nitride and chitosan oligomers (g-C3N4−COS) nanocarrier assembly, which was obtained by cross-linking with methacrylic anhydride (MA), was synthesized and characterized. Its characterization was carried out using infrared spectroscopy, elemental and thermal analyses, and transmission electron microscopy. The new nanocarriers (NCs), with an average particle size of 85 nm in diameter and a 0.25 dispersity index, showed photocatalytic activity (associated with the g-C3N4 moiety), susceptibility to enzymatic degradation (due to the presence of the COS moiety), and high encapsulation and moderate-high release efficiencies (>95% and >74%, respectively). As a proof of concept, the visible-light-driven photocatalytic activity of the NCs was tested for rhodamine B degradation and the reduction of uranium(VI) to uranium(IV). Regarding the potential of the nanocarriers for the encapsulation and delivery of bioactive products for crop protection, NCs loaded with Rubia tinctorum extracts were investigated in vitro against three Vitis vinifera phytopathogens (viz. Neofusicoccum parvum, Diplodia seriata, and Xylophilus ampelinus), obtaining minimum inhibitory concentration values of 750, 250, and 187.5 µg·mL−1, respectively. Their antifungal activity was further tested in vivo as a pruning wound protection product in young ‘Tempranillo’ grapevine plants that were artificially infected with the two aforementioned species of the family Botryosphaeriaceae, finding a significant reduction of the necrosis lengths in the inner woody tissues. Therefore, g-C3N4-MA-COS NCs may be put forward as a multifunctional platform for environmental and agrochemical delivery applications.
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Affiliation(s)
- Alberto Santiago-Aliste
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Eva Sánchez-Hernández
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Natalia Langa-Lomba
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), EPS, University of Zaragoza, Carretera de Cuarte s/n, 22071 Huesca, Spain
- Plant Protection Unit, Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Avda. Montañana 930, 50059 Zaragoza, Spain
| | - Vicente González-García
- Plant Protection Unit, Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Avda. Montañana 930, 50059 Zaragoza, Spain
| | - José Casanova-Gascón
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), EPS, University of Zaragoza, Carretera de Cuarte s/n, 22071 Huesca, Spain
| | - Jesús Martín-Gil
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Pablo Martín-Ramos
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), EPS, University of Zaragoza, Carretera de Cuarte s/n, 22071 Huesca, Spain
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Sivakumar S, Daniel Thangadurai T, Manjubaashini N, Nataraj D. Two-dimensional z-type MoS2/g-C3N4 semiconductor heterojunction nanocomposites for industrial methylene blue dye degradation under daylight. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Pourmadadi M, Rajabzadeh-Khosroshahi M, Saeidi Tabar F, Ajalli N, Samadi A, Yazdani M, Yazdian F, Rahdar A, Díez-Pascual AM. Two-Dimensional Graphitic Carbon Nitride (g-C 3N 4) Nanosheets and Their Derivatives for Diagnosis and Detection Applications. J Funct Biomater 2022; 13:204. [PMID: 36412845 PMCID: PMC9680252 DOI: 10.3390/jfb13040204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/21/2022] [Accepted: 10/23/2022] [Indexed: 12/14/2022] Open
Abstract
The early diagnosis of certain fatal diseases is vital for preventing severe consequences and contributes to a more effective treatment. Despite numerous conventional methods to realize this goal, employing nanobiosensors is a novel approach that provides a fast and precise detection. Recently, nanomaterials have been widely applied as biosensors with distinctive features. Graphite phase carbon nitride (g-C3N4) is a two-dimensional (2D) carbon-based nanostructure that has received attention in biosensing. Biocompatibility, biodegradability, semiconductivity, high photoluminescence yield, low-cost synthesis, easy production process, antimicrobial activity, and high stability are prominent properties that have rendered g-C3N4 a promising candidate to be used in electrochemical, optical, and other kinds of biosensors. This review presents the g-C3N4 unique features, synthesis methods, and g-C3N4-based nanomaterials. In addition, recent relevant studies on using g-C3N4 in biosensors in regard to improving treatment pathways are reviewed.
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Affiliation(s)
- Mehrab Pourmadadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14179-35840, Iran
| | | | - Fatemeh Saeidi Tabar
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14179-35840, Iran
| | - Narges Ajalli
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14179-35840, Iran
| | - Amirmasoud Samadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14179-35840, Iran
- Department of Chemical and Biomolecular Engineering, 6000 Interdisciplinary Science & Engineering Building (ISEB), Irvine, CA 92617, USA
| | - Mahsa Yazdani
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14179-35840, Iran
- Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, Tehran 14179-35840, Iran
| | - Abbas Rahdar
- Department of Physics, Faculty of science, University of Zabol, Zabol 538-98615, Iran
| | - Ana M. Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona, Km. 33.6, 28805 Alcalá de Henares, Madrid, Spain
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Andrei F, Boerasu I, Filipescu M, Palla-Papavlu A. Facile Modification of Flexible Electrodes via Laser Transfer. MATERIALS 2022; 15:ma15072488. [PMID: 35407822 PMCID: PMC8999771 DOI: 10.3390/ma15072488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/19/2022] [Accepted: 03/22/2022] [Indexed: 12/10/2022]
Abstract
In this work, we report the modification of commercially available electrochemical electrodes with tin oxide (SnO2) and Pd doped SnO2 (Pd-SnO2) via pulsed laser-induced forward transfer (LIFT). The pulsed light irradiation working as in situ pulsed photo-thermal treatment allows for the transfer of SnO2 and Pd-SnO2 from UV absorbing metal complex precursors onto flexible, commercially available screen-printed electrodes. The laser transfer conditions are optimized and the material transferred under different conditions is evaluated morphologically and chemically, and its functionality is tested against the detection of copper ions. For example, by applying laser fluences in the range 100–250 mJ/cm2, the shape and the size of the transferred features ranges from nano-polyhedrons to near corner-grown cubic Pd-SnO2 or near cubic Pd-SnO2. In addition, the EDX analysis is consistent with the XPS findings, i.e., following laser transfer, Pd amounts lower than 0.5% are present in the Pd-SnO2 pixels. First sensing tests were carried out and the transferred Pd-SnO2 proved to enhance the cathodic peak when exposed to Cu(II) ions. This photo-initiated fabrication technology opens a promising way for the low-cost and high-throughput manufacturing of metal oxides as well as for electrodes for heavy metal ion detection.
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Manufacture of Carbon Materials with High Nitrogen Content. MATERIALS 2022; 15:ma15072415. [PMID: 35407747 PMCID: PMC8999754 DOI: 10.3390/ma15072415] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023]
Abstract
Nowadays one of the biggest challenges for carbon materials is their use in CO2 capture and their use as electrocatalysts in the oxygen reduction reaction (ORR). In both cases, it is necessary to dope the carbon with nitrogen species. Conventional methods to prepare nitrogen doped carbons such as melamine carbonization or NH3 treatment generate nitrogen doped carbons with insufficient nitrogen content. In the present research, a series of activated carbons derived from MOFs (ZIF-8, ZIF-67) are presented. Activated carbons have been prepared in a single step, by pyrolysis of the MOF in an inert atmosphere, between 600 and 1000 °C. The carbons have a nitrogen content up to 20 at.% and a surface area up to 1000 m2/g. The presence of this nitrogen as pyridine or pyrrolic groups, and as quaternary nitrogen are responsible for the great adsorption capacity of CO2, especially the first two. The presence of Zn and Co generates very different carbonaceous structures. Zn generates a greater porosity development, which makes the doped carbons ideal for CO2 capture. Co generates more graphitized doped carbons, which make them suitable for their use in electrochemistry.
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Gao Y, Zhao C, Tan Q, Gao M, Chen G, Zhai R, Huang X, Xu X, Liu G, Wang J, Zhang Y, Xu D. Ternary magnetic Fe3O4@C3N4@covalent organic framework for facile extraction and determination of organophosphorus pesticides in fruit. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107103] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Alwin E, Wojcieszak R, Kočí K, Edelmannová M, Zieliński M, Suchora A, Pędziński T, Pietrowski M. Reductive Modification of Carbon Nitride Structure by Metals-The Influence on Structure and Photocatalytic Hydrogen Evolution. MATERIALS (BASEL, SWITZERLAND) 2022; 15:710. [PMID: 35160664 PMCID: PMC8836795 DOI: 10.3390/ma15030710] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 01/27/2023]
Abstract
Pt, Ru, and Ir were introduced onto the surface of graphitic carbon nitride (g-C3N4) using the wet impregnation method. A reduction of these photocatalysts with hydrogen causes several changes, such as a significant increase in the specific surface area, a C/N atomic ratio, a number of defects in the crystalline structure of g-C3N4, and the contribution of nitrogen bound to the amino and imino groups. According to the X-ray photoelectron spectroscopy results, a transition layer is formed at the g-C3N4/metal nanoparticle interphase, which contains metal at a positive degree of oxidation bonded to nitrogen. These structural changes significantly enhanced the photocatalytic activity in the production of hydrogen through the water-splitting reaction. The activity of the platinum photocatalyst was 24 times greater than that of pristine g-C3N4. Moreover, the enhanced activity was attributed to significantly better separation of photogenerated electron-hole pairs on metal nanoparticles and structural distortions of g-C3N4.
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Affiliation(s)
- Emilia Alwin
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (E.A.); (M.Z.); (A.S.); (T.P.)
| | - Robert Wojcieszak
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France;
| | - Kamila Kočí
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava-Poruba, Czech Republic; (K.K.); (M.E.)
| | - Miroslava Edelmannová
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava-Poruba, Czech Republic; (K.K.); (M.E.)
| | - Michał Zieliński
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (E.A.); (M.Z.); (A.S.); (T.P.)
| | - Agata Suchora
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (E.A.); (M.Z.); (A.S.); (T.P.)
| | - Tomasz Pędziński
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (E.A.); (M.Z.); (A.S.); (T.P.)
- Centre for Advanced Technologies, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
| | - Mariusz Pietrowski
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (E.A.); (M.Z.); (A.S.); (T.P.)
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Vivek E, Arulraj A, Khalid M, Vetha Potheher I. Facile synthesis of 2D Ni(OH)2 anchored g-C3N4 as electrode material for high-performance supercapacitor. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis. Catalysts 2021. [DOI: 10.3390/catal11060651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this contribution, the hydrogen evolution reaction and photodegradation of Rhodamine B (RhB) dye were studied using urea-based polymeric carbon nitride (PCN) as photocatalyst. The effects of calcination temperature and heating rate of the PCN on structural, morphological, optical, photoelectrochemical, and photocatalytic properties were addressed. Different properties were found to be crucial in boosting photocatalytic performance dependending on the reaction type. The highest efficiency in hydrogen evolution was observed in the presence of PCN characterized by the superior charge transport and charge lifetime properties arising from higher degree of structural arrangement and lower defect content in comparison to that of other photocatalysts. However, photocatalytic degradation of RhB was the most powerful when the catalyst exhibited the highest specific surface area as a key parameter determining its efficiency, although it presented lower charge transport and charge carrier properties.
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Mukhopadhyay TK, Leherte L, Datta A. Molecular Mechanism for the Self-Supported Synthesis of Graphitic Carbon Nitride from Urea Pyrolysis. J Phys Chem Lett 2021; 12:1396-1406. [PMID: 33508198 DOI: 10.1021/acs.jpclett.0c03559] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Quantum chemical calculations combined with kinetic Monte Carlo simulations are performed to decipher the kinetics for the one-pot synthesis of two-dimensional graphitic carbon nitride (g-C3N4) from urea pyrolysis. Two mechanisms are considered, one involving ammelide as the intermediate compound and the other considering cyanuric acid. Different grid growing patterns are investigated, and the size, shape, and density of the grids as well as the number and position of the defects are evaluated. We find that the mechanistic pathway involving ammelide is preferred. Larger g-C3N4 grids with lower density are achieved when the rate constant for melon growing is inversely proportional to the number of local reaction sites, while nearly filled smaller grids are obtained in the opposite scenario. Larger defects appear at the grid periphery while smaller holes appear throughout the grid. The synthesis of extended g-C3N4 structures is favored if the g-C3N4 growing propensity is directly proportional to the number of reaction sites.
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Affiliation(s)
- Titas Kumar Mukhopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Laurence Leherte
- Unit of Theoretical and Structural Physical Chemistry, Namur Institute of Structured Matter (NISM), Namur Research Institute for Life Sciences (NARILIS), Namur Medicine & Drug Innovation Center (NAMEDIC), Department of Chemistry, Laboratory of Structural Biological Chemistry, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
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