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Arif N, Ma Y, Zafar MN, Humayun M, Bououdina M, Zhang SY, Zhang Q, Yang X, Liang H, Zeng YJ. Design and Fabrication of Biomass Derived Black Carbon Modified g-C 3N 4/FeIn 2S 4 Heterojunction as Highly Efficient Photocatalyst for Wastewater Treatment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308908. [PMID: 38105418 DOI: 10.1002/smll.202308908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/09/2023] [Indexed: 12/19/2023]
Abstract
The environmental deterioration caused by dye wastewater discharge has received considerable attention in recent decades. One of the most promising approaches to addressing the aforementioned environmental issue is the development of photocatalysts with high solar energy consumption efficiency for the treatment of dye-contaminated water. In this study, a novel low-cost π-π biomass-derived black carbon modified g-C3N4 coupled FeIn2S4 composite (i.e., FeInS/BC-CN) photocatalyst is successfully designed and fabricated that reveals significantly improved photocatalytic performance for the degradation of Eosin Yellow (EY) dye in aqueous solution. Under dark and subsequent visible light irradiation, the amount optimized composite reveals 99% removal performance for EY dye, almost three-fold compared to that of the pristine FeInS and BC-CN counterparts. Further, it is confirmed by means of the electron spin resonance spectrometry, quenching experiments, and density functional theory (DFT) calculations, that the hydroxyl radicals (•OH) and superoxide radicals (•O2 -) are the dominant oxidation species involved in the degradation process of EY dye. In addition, a systematic photocatalytic degradation route is proposed based on the resultant degradation intermediates detectedduring liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis. This work provides an innovative idea for the development of advanced photocatalysts to mitigate water pollution.
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Affiliation(s)
- Nayab Arif
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yunfei Ma
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
| | | | - Muhammad Humayun
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University Riyadh 11586, Saudi Arabia
| | - Mohamed Bououdina
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University Riyadh 11586, Saudi Arabia
| | - Su-Yun Zhang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Qitao Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Xiaopeng Yang
- School of Material Science and Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Huawei Liang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yu-Jia Zeng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
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Singh AK, Agrahari S, Gautam RK, Tiwari I. A highly efficient NiCo 2O 4 decorated g-C 3N 4 nanocomposite for screen-printed carbon electrode based electrochemical sensing and adsorptive removal of fast green dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-30373-3. [PMID: 37837595 DOI: 10.1007/s11356-023-30373-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/06/2023] [Indexed: 10/16/2023]
Abstract
Herein, we demonstrate the preparation and application of NiCo2O4 decorated over a g-C3N4-based novel nanocomposite (NiCo2O4@g-C3N4). The prepared material was well characterized through several physicochemical techniques, including FT-IR, XRD, SEM, and TEM. The electrochemical characterizations via electrochemical impedance spectroscopy show the low electron transfer resistance of NiCo2O4@g-C3N4 owing to the successful incorporation of NiCo2O4 nanoparticles on the sheets of g-C3N4. NiCo2O4@g-C3N4 nanocomposite was employed in the fabrication of a screen-printed carbon electrode-based innovative electrochemical sensing platform and the adsorptive removal of a food dye, i.e., fast green FCF dye (FGD). The electrochemical oxidation of FGD at the developed NiCo2O4@g-C3N4 nanocomposite modified screen-printed carbon electrode (NiCo2O4@g-C3N4/SPCE) was observed at an oxidation potential of 0.65 V. A wide dual calibration range for electrochemical determination of FGD was successfully established at the prepared sensing platform, showing an excellent LOD of 0.13 µM and sensitivity of 0.6912 µA.µM-1.cm-2 through differential pulse voltammetry. Further, adsorbent dose, pH, contact time, and temperature were optimized to study the adsorption phenomena. The adsorption thermodynamics, isotherm, and kinetics were also investigated for efficient removal of FGD at NiCo2O4@g-C3N4-based adsorbents. The adsorption phenomenon of FGD on NiCo2O4@g-C3N4 was best fitted (R2 = 0.99) with the Langmuir and Henry model, and the corresponding value of Langmuir adsorption efficiency (qm) was 3.72 mg/g for the removal of FGD. The reaction kinetics for adsorption phenomenon were observed to be pseudo-second order. The sensitive analysis of FGD in a real sample was also studied.
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Affiliation(s)
- Ankit Kumar Singh
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Shreanshi Agrahari
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ravindra Kumar Gautam
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ida Tiwari
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Rao VS, Sharma R, Paul DR, Almáši M, Sharma A, Kumar S, Nehra SP. Architecting the Z-scheme heterojunction of Gd 2O 3/g-C 3N 4 nanocomposites for enhanced visible-light-induced photoactivity towards organic pollutants degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:98773-98786. [PMID: 36702986 DOI: 10.1007/s11356-023-25360-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
A basic calcination process in one step was employed to create g-C3N4 photocatalytic composites modified by Gd2O3 nanoparticles. SEM (scanning electron microscopy), FTIR (Fourier-transform infrared spectroscopy), XRD (X-ray diffraction), EIS (electrochemical impedance spectroscopy), PL (photoluminescence studies) as well as TEM (transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), and CV (cyclic voltammetry) were employed to explain the structural traits, optical properties, and morphological features of the processed photocatalyst. The findings show that Gd2O3 (Gd) does not affect the sample's crystalline structure but rather increases g-C3N4 surface area by spreading it superficially. Furthermore, Gd can redshift the light absorption peak, reduce the energy gap, and improve the efficiency with which photogenerated holes and electrons are removed in g-C3N4. The surface morphology of g-C3N4, in particular, could be significantly enhanced. We similarly employed three distinct photocatalytic complexes of Gd2O3 and g-C3N4 in 1:1, 2:1, and 3:1 proportions to degrade methylene blue (MB). After 100 min in visible light (400-800 nm), the photodegradation rate of composites is 58.8% for 1:1 (GG1), 94.5% for 2:1 (GG2), and 92% for 3:1 (GG3). In addition to the MB dye, the photocatalytic activity of synthesized materials was also studied for methyl orange. The result shows phenomenal degradation values, i.e.; for GG1 86%, GG2 96%, and for GG3 84.6%. The narrow band gap that separates the photogenerated electron and hole enhances g-C3N4 ability to degrade photo-catalytically. From the result, we concluded that the photocurrent and cyclic photocatalytic degradation of methylene blue shows that a composition of 2:1 Gd2O3/g-C3N4 has high photocatalytic stability.
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Affiliation(s)
- Vikrant Singh Rao
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, India
| | - Rishabh Sharma
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, India
- Interdisciplinary Program in Climate Studies (IDPCS), Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Devina Rattan Paul
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, India
| | - Miroslav Almáši
- Department of Inorganic Chemistry, Faculty of Science, P. J. Safarik University, Moyzesova 11, 041 54, Kosice, Slovak Republic
| | - Anshu Sharma
- Department of Physics, School of Engineering & Technology (SoET), Central University of Haryana, Mahendragarh, 123031, India
| | - Suresh Kumar
- Department of Electronic Science, Kurukshetra University, Kurukshetra, 1336119, India
| | - Satya Pal Nehra
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, India.
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Nehra P, Rana PS, Singh S. Remediation of recalcitrant pollutants in water solution using visible light responsive cerium-doped tungsten trioxide nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27280-y. [PMID: 37145365 DOI: 10.1007/s11356-023-27280-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 04/24/2023] [Indexed: 05/06/2023]
Abstract
In order to attain a solar energy-driven photocatalyst for wastewater remediation, cerium-doped WO3 (W1-xCexO3 with x = 0, 0.02, 0.04, 0.06, and 0.08) nanoparticles have been synthesized via a chemical co-precipitation technique. X-ray diffraction (XRD) analysis confirmed that W1-xCexO3 nanoparticles retained their monoclinic structure even after doping. The presence of the vast number of defects produced in the WO3 lattice was corroborated by Raman spectroscopy. Scanning electron microscopy confirmed the spherical shape of the nanoparticles with particle size range 50-76 nm. The optical band gap of W1-xCexO3 nanoparticles decreases from 3.07 to 2.36 eV with an increase in x, as confirmed by UV-Vis spectroscopy. Photoluminescence (PL) spectroscopy confirmed that the minimum rate of recombination was observed for W1-xCexO3 with x = 0.04. Degradation efficiency was explored for methyl violet (MV) and rhodamine-B (Rh-B) with 0.01 g of photocatalyst in a photoreactor chamber having a 200-W xenon lamp as a visible source of light. The results showed that the maximum photo-decolorization towards MV (94%) and rhodamine-B (79.4%) was observed in x = 0.04 sample in just 90 min because of its least recombination rate, highest adsorption capacity, and optimum band edge positions. Intriguingly, it has been observed that the modification with cerium in WO3 nanoparticles enhances the photocatalytic activity by narrowing the band gap and by efficaciously lowering the recombination rate due to electron entrapment by defects produced in the lattice.
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Affiliation(s)
- Pooja Nehra
- Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat, Haryana, 131039, India
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pawan S Rana
- Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat, Haryana, 131039, India.
| | - Satyendra Singh
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India.
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Swarnkar N, Yadav RK, Singh S, Shahin R, Shukla RK, Tripathi SK, Dwivedi DK, Nath S, Singh C, Baeg JO. Highly selective in-situ prepared g-C3N4/P-B composite photocatalyst for direct C-H bond arylation and NADH regeneration cofactor under solar light. J CHEM SCI 2023. [DOI: 10.1007/s12039-023-02150-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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