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Dong X, Li H, Guo Y, Ge C, Zha J. Construction of Hierarchical Black TiO 2/Carbon Fiber: Enhanced Photocatalytic Activity Based on Schottky Heterojunctions. ACS APPLIED BIO MATERIALS 2024; 7:5397-5410. [PMID: 39051842 DOI: 10.1021/acsabm.4c00572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Photocatalytic antimicrobials, as emerging advanced oxidative antimicrobial materials, have the advantages of low price and long-lasting antimicrobial properties. Nevertheless, with catalysts increasingly trending toward nanoscale dimensions, the environmental challenge of catalyst recycling becomes more pronounced. In this paper, we propose utilizing one-dimensional carbon fiber as a substrate, employing the nucleating agent method to induce Titanium dioxide (TiO2) growth on the fiber surface. Furthermore, the material's band gap underwent modification through hydrogen calcination, thus resulting in the attainment of hierarchical black TiO2/carbon fiber composites with visible light-driven capabilities. The characterization of the materials was conducted via scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results revealed that when the black hydrogenated TiO2 was composited with carbon fiber, the Schottky heterojunction was formed, and thus effectively improved the photocatalytic effect of the composites. Notably, the degradation rate of methylene blue achieved 96.25% within 150 min when utilizing black TiO2/carbon fiber composites, while the inactivation rate of Escherichia coli (E. coli) reached 97.58% within 0.5 h and attained complete inactivation within 60 min.
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Affiliation(s)
- Xiaofeng Dong
- Institute of Powder Metallurgy and Advanced Ceramics, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Haiqing Li
- Institute of Powder Metallurgy and Advanced Ceramics, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yi Guo
- Institute of Powder Metallurgy and Advanced Ceramics, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Changchun Ge
- Institute of Powder Metallurgy and Advanced Ceramics, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianrui Zha
- Institute of Cultural Heritage and History of Science and Technology, University of Science and Technology Beijing, Beijing 100083, China
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2
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Su HM, Vasu D, Chan SY, Liu YC, Jiang J, You YF, Chiu TW, Chen SC. Two-dimensional heterojunction layered graphene oxide/graphitic carbon nitride photocatalyst for removal of toxic environmental dye methylene blue. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123556. [PMID: 38346635 DOI: 10.1016/j.envpol.2024.123556] [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: 11/10/2023] [Revised: 02/05/2024] [Accepted: 02/10/2024] [Indexed: 02/17/2024]
Abstract
The direct thermal polymerization techniques were applied to prepare the graphene oxide (GO)-graphitic carbon nitride (gCN) hybrid structure. The prepared hybrid heterojunction GO-gCN nanosheets were utilized as a photocatalyst to remove model pollutants methylene blue (MB) dye. The basic physio-chemical properties of GO-gCN layered materials have been analyzed by various characterization techniques. In addition, the proposed materials have a higher photocatalytic ability toward the degradation of aqueous solution of MB dye under visible light irradiation within a short treatment time. This is because it's the synergistic effects of GO-gCN layer-by-layer structures produced by π─π stacking with charge-transfer interactions. The gCN with GO composite can able to enhance the charge transfer and light-harvesting properties. Under the influence of photocatalyst, the surface of Graphene oxide undergoes the separation and combination of carbonyl radicals, hydroxyl radicals, epoxy radicals, and electron-hole pairs. This enhances the absorption of visible light and improves the degradation of MB, when GO is incorporated into gCN. The removal efficiency of MB reached up to 82.311% within the short treatment time.
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Affiliation(s)
- Homg-Ming Su
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Dhanapal Vasu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Shang-Yu Chan
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Yung-Chieh Liu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Jiaxin Jiang
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Yu-Feng You
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Te-Wei Chiu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Institute of Materials Science and Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
| | - Sheng-Chi Chen
- Department of Materials Engineering and Center for Plasma and Thin Film Technologies, Ming Chi University of Technology, New Taipei City, 243, Taiwan
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Wang R, Liu H, Xu T, Zhang Y, Gu C, Jiang T. SERS-based recyclable immunoassay mediated by 1T-2H mixed-phase magnetic molybdenum disulfide probe and 2D graphitic carbon nitride substrate. Biosens Bioelectron 2023; 227:115160. [PMID: 36827796 DOI: 10.1016/j.bios.2023.115160] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/13/2023] [Accepted: 02/17/2023] [Indexed: 02/21/2023]
Abstract
Recently, non-metallic SERS-based immunoassay has attracted much attention due to its attractive chemical enhancement (CM), chemical stability, and biocompatibility. Herein, metallic (1T)-semiconductor (2H) mixed-phase magnetic molybdenum disulfide (MoS2) was rationally developed and combined with two-dimensional (2D) graphitic carbon nitride (g-C3N4) nanosheets to realize a SERS-based recyclable immunoassay of CA125. The Fe3O4 core promoted the reliable stacking of MoS2 nanoflakes into a flower-like shape with fully-exposed active surface. Particularly, the existence of 1T phase facilitated a noble-metal-comparable SERS activity due to the high electron density-induced charge transfer process with elevated efficiency. Moreover, a conversion from bulk to 2D nanosheet was swimmingly achieved for g-C3N4 via acid etching, whose large surface area full of active electrons and functional groups triggered an enhancement factor (EF) of 7.8 × 106. Based on a typical sandwich immunostructure, a limit of detection (LOD) as 4.96 × 10-4 IU/mL was demonstrated for CA125 in a recyclable process. Finally, such an immunosensor was employed to analyze clinical samples, indicating its prodigious potentiality in the early recognition and monitoring of cancer.
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Affiliation(s)
- Rongyan Wang
- School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, PR China
| | - Huan Liu
- School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, PR China
| | - Tao Xu
- Department of Pharmacy, Ningbo City First Hospital, Ningbo, 315010, Zhejiang, PR China
| | - Yongling Zhang
- College of Information &Technology, Jilin Normal University, Siping, 136000, Jilin, PR China
| | - Chenjie Gu
- School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, PR China.
| | - Tao Jiang
- School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, PR China.
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Gorai DK, Kuila SK, Oraon A, Kumar A, Suthar M, Mitra R, Biswas K, Roy PK, Ahmad MI, Kundu TK. A facile and green synthesis of Mn and P functionalized graphitic carbon nitride nanosheets for spintronics devices and enhanced photocatalytic performance under visible-light. J Colloid Interface Sci 2023; 644:397-414. [PMID: 37126890 DOI: 10.1016/j.jcis.2023.04.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/26/2023] [Accepted: 04/13/2023] [Indexed: 05/03/2023]
Abstract
Manganese and phosphorus co-doped, graphitic carbon nitride (g-C3N4) nanosheet (Mn/P-g-C3N4) is prepared by facile and green calcination process of melamine (C3H6N6), manganese chloride tetrahydrate (MnCl2·4H2O), and ammonium dihydrogen phosphate ((NH4)H2PO4). The Mn/P co-doping significantly enhances magnetic values compared to pristine-g-C3N4, phosphorus-doped g-C3N4 (P-g-C3N4), and manganese-doped g-C3N4 (Mn-g-C3N4). We find that Mn/P-g-C3N4 is a half-metallic ferromagnetic material having a magnetic moment and Curie temperature of 4.51 μB and ∼ 800 K, respectively. The ultraviolet-visible (UV-vis) absorption spectrum of Mn/P-g-C3N4 reveals superior absorption in broader wavelength compared to pristine-g-C3N4, P-g-C3N4, and Mn-g-C3N4. The methyl orange degradation efficiency of Mn/P-g-C3N4 photocatalyst is 94 %, which is three times more than that of pristine-g-C3N4 (29 %) and more significant than the P-g-C3N4 (46 %) and Mn-g-C3N4 (58 %). Furthermore, density functional theory (DFT) calculation explains the origin of high magnetic behavior, the boosted photocatalytic efficiency of Mn/P-g-C3N4, and the essential material properties like structure, bandgap, the density of states (DOS), and atomic level interaction. This work may be helpful for reasonably designing ferromagnetic material for spintronics devices and boosting visible-light (VL) photocatalytic performance for environmental remediation.
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Affiliation(s)
- Deepak Kumar Gorai
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
| | - Saikat Kumar Kuila
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Akash Oraon
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Anurag Kumar
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, U.P. 221005, India
| | - Mukesh Suthar
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, U.P. 221005, India
| | - Rahul Mitra
- Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, U.P. 208016, India
| | - Krishanu Biswas
- Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, U.P. 208016, India
| | - P K Roy
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, U.P. 221005, India
| | - Md Imteyaz Ahmad
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, U.P. 221005, India
| | - Tarun Kumar Kundu
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
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Tang C, Cheng M, Lai C, Li L, Yang X, Du L, Zhang G, Wang G, Yang L. Recent progress in the applications of non-metal modified graphitic carbon nitride in photocatalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Alam MW, Naeem S, Usman SM, Kanwal Q, BaQais A, Aldughaylibi FS, Nahvi I, Zaidi N. Cerium Oxide Nanorods Synthesized by Dalbergia sissoo Extract for Antioxidant, Cytotoxicity, and Photocatalytic Applications. Molecules 2022; 27:molecules27238188. [PMID: 36500279 PMCID: PMC9735491 DOI: 10.3390/molecules27238188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
In this study, cerium oxide nanorods (CeO2-NRs) were synthesized by using the phytochemicals present in the Dalbergia sissoo extract. The physiochemical characteristics of the as-prepared CeO2-NRs were investigated by using ultraviolet-visible spectroscopy (UV-VIS), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction analysis (XRD). The SEM and UV-VIS analyses revealed that the acquired nanomaterials possessed a rod-like morphology while the XRD results further confirmed that the synthesized NRs exhibited a cubic crystal lattice system. The antioxidant capacity of the synthesized CeO2-NRs was investigated by using several in vitro biochemical assays. It was observed that the synthesized NRs exhibited better antioxidant potential in comparison to the industrial antioxidant of the butylated hydroxyanisole (BHA) in 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The biochemical assays, including lipid peroxidation (LPO), total antioxidant capacity (TAC), and catalase activity (CAT), were also performed in the human lymphocytes incubated with the CeO2-NRs to investigate the impact of the NRs on these oxidative biomarkers. Enhanced reductive capabilities were observed in all the assays, revealing that the NRs possess excellent antioxidant properties. Moreover, the cytotoxic potential of the CeO2-NRs was also investigated with the MTT assay. The CeO2-NRs were found to effectively kill off the cancerous cells (MCF-7 human breast cancer cell line), further indicating that the synthesized NRs exhibit anticancer potential as well. One of the major applications studied for the prepared CeO2-NRs was performing the statistical optimization of the photocatalytic degradation reaction of the methyl orange (MO) dye. The reaction was optimized by using the technique of response surface methodology (RSM). This advanced approach facilitates the development of the predictive model on the basis of central composite design (CCD) for this degradation reaction. The maximum degradation of 99.31% was achieved at the experimental optimized conditions, which corresponded rather well with the predicted percentage degradation values of 99.58%. These results indicate that the developed predictive model can effectively explain the performed experimental reaction. To conclude, the CeO2-NRs exhibited excellent results for multiple applications.
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Affiliation(s)
- Mir Waqas Alam
- Al Bilad Bank Scholarly Chair for Food Security in Saudi Arabia, The Deanship of Scientific Research, The Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Physics, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Correspondence: (M.W.A.); (S.N.)
| | - Sumaira Naeem
- Department of Chemistry, University of Gujrat, Gujrat 50700, Pakistan
- Correspondence: (M.W.A.); (S.N.)
| | | | - Qudsia Kanwal
- Department of Chemistry, The University of Lahore, Lahore 54000, Pakistan
| | - Amal BaQais
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Fatimah Saeed Aldughaylibi
- Al Bilad Bank Scholarly Chair for Food Security in Saudi Arabia, The Deanship of Scientific Research, The Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Physics, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Insha Nahvi
- Al Bilad Bank Scholarly Chair for Food Security in Saudi Arabia, The Deanship of Scientific Research, The Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Noushi Zaidi
- Al Bilad Bank Scholarly Chair for Food Security in Saudi Arabia, The Deanship of Scientific Research, The Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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7
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Allwin Richard Y, Aniu Lincy S, Saravanakumar R, Maheswaran R, Dharuman V. Sensitive detection of acetaminophen in body fluids, pharmaceuticals and herbal medicines at un-doped mesoporous carbon nitride film electrode. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Rangarajan G, Farnood R. Role of persistent free radicals and lewis acid sites in visible-light-driven wet peroxide activation by solid acid biochar catalysts - A mechanistic study. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129514. [PMID: 35816799 DOI: 10.1016/j.jhazmat.2022.129514] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/23/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
We report the synthesis of H2SO4-modified biochars (SBCs) as solid-acid catalysts to activate H2O2 at circumneutral pH under visible light radiation. Spent coffee grinds were pyrolyzed with TiO2 at 300, 500 and 600 °C followed by steeping in 5 M H2SO4 and were used for the Fenton-like degradation of methyl orange (MO). The catalytic activity of SBC depended on the pyrolysis temperature and correlated well with the surface acidity and persistent free radical (PFR) concentration. Results showed that a complete MO removal and a TOC reduction of 70.2% can be achieved with SBC500 under photo-Fenton conditions. However, poisoning of the Lewis acid sites on SBC by PO43- led to a dramatic decrease in the removal of MO with inhibition effects more pronounced than with radical scavengers, suggesting the key role played by acid-sites on the activation of H2O2. Finally, electron paramagnetic resonance (EPR) studies identified •OH as the key transient in the degradation followed by •O2- and 1O2. These findings suggest that H2O2 was likely adsorbed on the surface oxygenated functional groups before being decomposed by accepting electrons from the PFRs on the SBC surface.
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Affiliation(s)
- Goutham Rangarajan
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Toronto M5S 3E5, ON, Canada
| | - Ramin Farnood
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Toronto M5S 3E5, ON, Canada.
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9
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Shanbhag YM, Shanbhag MM, Malode SJ, Dhanalakshmi S, Mondal K, Shetti NP. Direct and Sensitive Electrochemical Evaluation of Pramipexole Using Graphitic Carbon Nitride (gCN) Sensor. BIOSENSORS 2022; 12:bios12080552. [PMID: 35892449 PMCID: PMC9394362 DOI: 10.3390/bios12080552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 12/31/2022]
Abstract
Pramipexole (PMXL) belongs to the benzothiazole class of aromatic compounds and is used in treating Parkinson’s disease; however, overdosage leads to some abnormal effects that could trigger severe side effects. Therefore, it demands a sensitive analytical tool for trace level detection. In this work, we successfully developed an electrochemical sensor for the trace level detection of PMXL, using the voltammetric method. For the analysis, graphitic carbon nitride (gCN) was opted and synthesized by using a high-temperature thermal condensation method. The synthesized nanoparticles were employed for surface characterization, using transmission electron microscopy (TEM), X-ray diffraction (XRD), and atomic force microscopy (AFM) techniques. The electrochemical characterization of the material was evaluated by using the electrochemical impedance spectroscopy (EIS) technique to evaluate the solution–electrode interface property. The cyclic voltammetry (CV) behavior of PMXL displayed an anodic peak in the forward scan, indicating that PMXL underwent electrooxidation, and an enhanced detection peak with lower detection potential was achieved for gCN-modified carbon paste electrode (gCN·CPE). The influence of different parameters on the electrochemical behavior was analyzed, revealing the diffusion governing the electrode process with an equal number of hydronium ions and electron involvement. For the fabricated gCN·CPE, good linearity range was noticed from 0.05 to 500 µM, and a lower detection limit (LD) of 0.012 µM was achieved for the selected concentration range (0.5 to 30 µM). Selectivity of the electrode in PMXL detection was investigated by conducting an interference study, while the tablet sample analysis demonstrates the sensitive and real-time application of the electrode. The good recovery values for the analysis illustrate the efficiency of the electrode for PMXL analysis.
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Affiliation(s)
- Yogesh M. Shanbhag
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi 580 031, Karnataka, India; (Y.M.S.); (S.J.M.); (S.D.)
| | - Mahesh M. Shanbhag
- Department of Chemistry, K.L.E. Institute of Technology, Hubballi 580 027, Karnataka, India;
| | - Shweta J. Malode
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi 580 031, Karnataka, India; (Y.M.S.); (S.J.M.); (S.D.)
| | - S. Dhanalakshmi
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi 580 031, Karnataka, India; (Y.M.S.); (S.J.M.); (S.D.)
| | - Kunal Mondal
- Idaho National Laboratory, Idaho Falls, ID 83415, USA
- Correspondence: (K.M.); (N.P.S.)
| | - Nagaraj P. Shetti
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi 580 031, Karnataka, India; (Y.M.S.); (S.J.M.); (S.D.)
- Correspondence: (K.M.); (N.P.S.)
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Zhang M, Yang Y, An X, Zhao J, Bao Y, Hou LA. Exfoliation method matters: The microstructure-dependent photoactivity of g-C 3N 4 nanosheets for water purification. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127424. [PMID: 34634708 DOI: 10.1016/j.jhazmat.2021.127424] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/25/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
Exfoliation of carbon nitride (g-C3N4) into an ultrathin nanostructure significantly improves its photoactivity. However, the effects of the exfoliation method on the microstructure and photocatalytic performance of g-C3N4 nanosheets remain largely unknown. Herein, several typical strategies, such as thermal, chemical, ultrasonic and one-step exfoliation, were applied to exfoliate g-C3N4 nanosheets for photocatalytic applications. A procedure capable of controlling the morphology, microstructure, light-absorption property, and visible light photoactivity of g-C3N4 nanosheets was attempted. We found that nanosheets prepared from one-step exfoliation present superior photocatalytic efficiency under visible light than those fabricated by thermal exfoliation and ultrasonic exfoliation. The kinetic constants for bisphenol A (BPA) photodegradation over these samples were determined to be 6.5, 4.5 and 2.3 times higher than bulk g-C3N4, respectively. For chemical exfoliation, excessive oxidation by H2SO4 can lead to the structural defects and deactivation of urea-derived g-C3N4 nanosheets. Carbon nitride nanosheets synthesized by one-step exfoliation exhibited high specific surface area, optimal band gap energy structure, and high charge separation efficiency, thereby increasing visible-light photoactivity. Enabling cost-effective production of ultrathin and robust g-C3N4 nanosheets, one-step exfoliation offers a potential strategy to exploit high-performance g-C3N4 for water purification applications.
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Affiliation(s)
- Menglu Zhang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yu Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Xiaoqiang An
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | | | - Yueping Bao
- Environment Chemistry and Materials Centre (ECMC), Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore
| | - Li-An Hou
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; High Tech Inst Beijing, Beijing 100094, Peoples R China
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11
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Du C, Nie S, Feng W, Zhang J, Qi M, Liang Y, Wu Y, Feng J, Dong S, Liu H, Sun J. Hydroxyl regulating effect on surface structure of BiOBr photocatalyst toward high-efficiency degradation performance. CHEMOSPHERE 2022; 287:132246. [PMID: 34543902 DOI: 10.1016/j.chemosphere.2021.132246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/08/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
Herein, photocatalytic degradation of levofloxacin hydrochloride (LVF) by a simple surface hydroxyl strategy on BiOBr photocatalyst was studied under simulated visible light irradiation. Interestingly, the BiOBr contained abundant hydroxyl groups following its modification with glucose, which enhanced the photocatalytic degradation of levofloxacin hydrochloride (LVF). The degradation efficiency of LVF over the optimized composite of BiOBr-5 could reach 91.67% in 20 min, which was much higher than that of pristine BiOBr (59.26%). Following, the biotoxicity of antibiotics to Escherichia coli DH5a could be eliminated after LVF photocatalytic degradation. This strategy proposed in this work can provide new ideas for tuning the surface structures of photocatalysts via specific functional groups for the highly efficient degradation and efficient removal of antibiotics in wastewater.
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Affiliation(s)
- Cuiwei Du
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Shiyu Nie
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Weiwei Feng
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Jiale Zhang
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Mingshuo Qi
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Yutong Liang
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Yuhan Wu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Jinglan Feng
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China
| | - Shuying Dong
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China.
| | - Haijin Liu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China.
| | - Jianhui Sun
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China.
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12
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li Zhao W, hua Gao Y, Zhang D. Hydrothermal synthesis of spherical g-C3N4 and CdS composite photocatalyst with enhanced visible light photocatalytic activity. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Zhang H, Yan Y, Khan MA, Xia M, Lei W, Wang F. Preparation of spherical filler-like ZnFe 2O 4/Bi 2MoO 6 surrounded by nanosheets and its photocatalytic applications. ENVIRONMENTAL TECHNOLOGY 2021; 42:2077-2084. [PMID: 31701807 DOI: 10.1080/09593330.2019.1691664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/23/2019] [Indexed: 06/10/2023]
Abstract
In this article, the spherical filler-like ZnFe2O4/Bi2MoO6 (ZFO/BMO) surrounded by nanosheets were synthesized by a solvothermal method using spherical ZnFe2O4 as a matrix. Scanning electron microscope (SEM), X-ray diffraction (XRD), Photoluminescence (PL), Fourier transform infrared spectroscopy (FT-IR) and Diffuse reflectance spectra (DRS) were used to characterize the prepared samples. The photocatalytic performance of the material was detected under 420 nm visible light by Rhodamine B (RhB). The degradation results indicated that the ZFO/BMO photocatalyst with 20% ZnFe2O4 content (ZFO/BMO-2) demonstrated highly efficient performance. The constructed Z-type ZFO/BMO heterojunction lengthens the visible light absorption threshold and improves the photocatalytic activity. Furthermore, ZFO/BMO heterojunction composite photocatalyst can be recycled effectively by applying an appropriate external magnetic field. It has important research value in photocatalysis and recycling.
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Affiliation(s)
- Hongling Zhang
- Nanjing Institute of Enivironmental Sciences, Ministry of Ecology and Environment, Nanjing, People's Republic of China
| | - Yanghao Yan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Muhammad Asim Khan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Mingzhu Xia
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Wu Lei
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Fengyun Wang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
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14
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John A, Rajan MS, Thomas J. Carbon nitride-based photocatalysts for the mitigation of water pollution engendered by pharmaceutical compounds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24992-25013. [PMID: 33772713 DOI: 10.1007/s11356-021-13528-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
In recent decades, the destructive impact of active pharmaceutical ingredients (API) present in surface and drinking water on aquatic and terrestrial life forms becomes a major concern of researchers. API like diclofenac (DCF), carbamazepine (CBZ), tetracycline (TC), and sulfamethoxazole (SME) found in water bodies cause antimicrobial resistance and are potent carcinogens and endocrine disruptors. Conventional wastewater treatment methods possess some drawbacks and were found to be insufficient for the effective removal of APIs. Visible light-assisted semiconductor photocatalysis has become an alternative choice for tackling this worse scenario. Graphitic carbon nitride, a metal-free visible light active semiconductor photocatalyst is an emerging hotspot nanomaterial whose practical utility in water purification is widely recognized. This review comes up with an insightful outlook on the panorama of recent progress in the field of g-C3N4-assisted photocatalytic systems for the eradication of APIs. In addition, the review summarizes various strategies adopted for the broad-spectrum utilization of visible light and the enhancement of charge separation of pristine g-C3N4. The mechanistic pathways followed by different pharmaceuticals during their photocatalytic degradation process were also briefly discussed.
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Affiliation(s)
- Anju John
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala, 686561, India
| | - Mekha Susan Rajan
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala, 686561, India
| | - Jesty Thomas
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala, 686561, India.
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15
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Li Y, Yang B, Liu B. MOF assisted synthesis of TiO2/Au/Fe2O3 hybrids with enhanced photocatalytic hydrogen production and simultaneous removal of toxic phenolic compounds. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114815] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Huang X, Zhu N, Mao F, Ding Y, Zhang S, Li F, Liu H, Wu P. Novel Au@C modified g-C3N4 (Au@C/g-C3N4) as efficient visible-light photocatalyst for toxic organic pollutant degradation: Synthesis, performance and mechanism insight. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117485] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Wu Q, Zhang Z. WITHDRAWN: Fabrication of erbium and nitrogen modified TiO 2/diatomaceous earth as a sunlight-driven floating photocatalyst for ibuprofen mitigation. ENVIRONMENTAL RESEARCH 2020:110475. [PMID: 33197419 DOI: 10.1016/j.envres.2020.110475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 10/19/2020] [Accepted: 11/02/2020] [Indexed: 06/11/2023]
Abstract
This article has been withdrawn at the request of the authors. Zhaohong Zhang is listed as an author on the manuscript but has informed the journal that this occurred without their consent or knowledge of the submission, and the email address provided was fake. Zhaohong Zhang does not support the scientific conclusions of the article. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Qiong Wu
- College of Environment, Liaoning University, Shenyang, 110036, PR China
| | - Zhaohong Zhang
- College of Environment, Liaoning University, Shenyang, 110036, PR China
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18
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19
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Zhou X, Cui SC, Liu JG. Three-dimensional graphene oxide cross-linked by benzidine as an efficient metal-free photocatalyst for hydrogen evolution. RSC Adv 2020; 10:14725-14732. [PMID: 35497174 PMCID: PMC9052120 DOI: 10.1039/d0ra00383b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/03/2020] [Indexed: 11/21/2022] Open
Abstract
The use of low-cost photocatalysts to split water into H2 fuel via solar energy is highly desirable for the production of clean energy and a sustainable society. Here three-dimensional graphene oxide (3DG) porous materials were prepared by cross-linking graphene oxide (GO) sheets using aromatic diamines (benzidine, 2,2′-dimethyl-4,4′-biphenyldiamine, 4,4′-diaminodiphenylmethane) that reacted with the carboxyl groups of the GO sheets at room temperature. The prepared 3DG porous materials were used as efficient metal-free photocatalysts for the production of H2via water splitting under full-spectrum light, where the photocatalytic activity was highly dependent on the cross-linker and the 3DG reduction level. It was also found that the 3DG prepared with benzidine as the linker demonstrated a significantly higher H2 evolution rate than the 3DGs prepared using 2,2′-dimethyl-4,4′-biphenyldiamine and 4,4′-diaminodiphenylmethane as the cross-linkers. The photoactivity was further tuned by varying the mass ratio of GO to benzidine. Among the prepared 3DG materials, 3DG-3, with an intermediate C/O ratio of 1.84, exhibited the highest H2 production rate (690 μmol g−1 h−1), which was significantly higher than the two-dimensional GO (45 μmol g−1 h−1) and the noncovalent 3DG synthesized by a hydrothermal method (128 μmol g−1 h−1). Moreover, this study revealed that the 3DG photocatalytic performance was favored by effective charge separation, while it could be further tuned by changing the reduction level. In addition, these results could prompt the preparation of other 3D materials and the application of new types of photocatalysts for H2 evolution. Three-dimensional graphene oxide covalently linked by benzidine works as an efficient metal-free photocatalyst for H2 evolution.![]()
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Affiliation(s)
- Xin Zhou
- Key Lab for Advanced Materials
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Shi-Cong Cui
- Key Lab for Advanced Materials
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Jin-Gang Liu
- Key Lab for Advanced Materials
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
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Facile synthesis of protonated g-C3N4 and acid-activated montmorillonite composite with efficient adsorption capacity for PO43− and Pb(II). Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.09.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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21
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Effective adsorption of heavy metal ions by sodium lignosulfonate reformed montmorillonite. Int J Biol Macromol 2019; 138:188-197. [DOI: 10.1016/j.ijbiomac.2019.07.075] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/02/2019] [Accepted: 07/10/2019] [Indexed: 12/11/2022]
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22
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Polymeric structure optimization of g-C 3N 4 by using confined argon-assisted highly-ionized ammonia plasma for improved photocatalytic activity. J Colloid Interface Sci 2019; 556:214-223. [PMID: 31445449 DOI: 10.1016/j.jcis.2019.08.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 11/23/2022]
Abstract
The optimization of the polymeric structure and the modulation of surface amino groups in graphitic carbon nitride (g-CN) are critical but challenging in improving the photoelectric and photocatalytic performances of this polymer semiconductor. Ammonia plasma treatment may provide a fast and useful approach to optimize g-CN materials yet is seriously restricted by the low ionization ability of ammonia. Herein, a confined fast and environmental-friendly ammonia plasma method based on argon-assisted high ionization of NH3 was developed for efficient modification of raw g-CN. Compared with the weakly-ionized pure ammonia plasma which can only introduce amino group onto the surface g-CN, the argon-assisted highly-ionized ammonia plasma treatment obviously contributes to the comprehensively polymeric structure optimization of g-CN, and thus plays a key role in enhancing its light-harvesting and decelerating the recombination of the photogenerated charge carriers. As a result, the argon-assisted highly-ionized ammonia plasma-treated g-CN-Ar+NH3 outperformed the raw g-CN by a 2.5-fold higher photocatalytic reduction of hexavalent chromium and a remarkable 3.8-fold higher photocatalytic H2 evolution activity (up to 957.8 μmol·h-1·g-1) under visible light irradiation. Our findings suggest the great prospects of this novel highly-ionized ammonia plasma treatment method in the controllable modification of semiconductors and polymers.
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Yasmeen H, Zada A, Liu S. Dye loaded MnO2 and chlorine intercalated g-C3N4 coupling impart enhanced visible light photoactivities for pollutants degradation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111867] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Chu Y, Khan MA, Wang F, Xia M, Lei W, Zhu S. Kinetics and equilibrium isotherms of adsorption of Pb(II) and Cu(II) onto raw and arginine-modified montmorillonite. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.03.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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