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Aruchamy K, Sudarsan D, Ajith M, Sreekumar AAM, Ayyasamy UM, Manickam S. Enhanced photocatalytic activity of V 3O 7 / V 2O 5 - reduced graphene oxide nanocomposite towards methylene blue dye degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:20983-20998. [PMID: 38381290 DOI: 10.1007/s11356-024-32375-1] [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: 10/03/2023] [Accepted: 02/04/2024] [Indexed: 02/22/2024]
Abstract
This work investigates the photocatalytic performance of V2O5 and V3O7 nanoparticles and their nanocomposites with rGO. The as-annealed V2O5 and V3O7 nanoparticles exhibited pure orthorhombic and monoclinic structures with an optical bandgap of 2.3 and 2.5 eV, respectively. The corresponding vibrational modes using Raman and FTIR spectroscopy analysis further confirm the form. The morphological studies reveal that V2O5 and V3O7 nanoparticles possess plate and petal-like morphology, respectively. Moreover, in the case of V2O5/V3O7-rGO nanocomposites, the plate/petal-like nanoparticles are embedded within rGO sheets. Incorporating nanoparticles within rGO sheets has quenched the green photoluminescence emission, enhancing their photocatalytic performance upon irradiation with white light of 100 mW/cm2. This is ascribed to the effective transport of interfacial electrons from vanadium oxide nanoparticles to the rGO surface, reducing the recombination of photogenerated charge carriers. These results indicate that the vanadium oxide/rGO nanocomposites have potential applications in wastewater treatment.
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Affiliation(s)
- Kathirvel Aruchamy
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India
| | - Darsana Sudarsan
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India
| | - Manujith Ajith
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India
| | - Arya Arayannamangalath Mana Sreekumar
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India
| | - Uma Maheswari Ayyasamy
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India
| | - Sivakumar Manickam
- Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India.
- Materials Processing Laboratory, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.
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Mahendran GB, Ramalingam SJ, Rayappan JBB, Gumpu MB, Kumar RG, Lakshmanakumar M, Nesakumar N. Amperometric Detection of Mercury Ions Using Piperazine‐Functionalized Reduced Graphene Oxide as an Efficient Sensing Platform. ChemistrySelect 2022. [DOI: 10.1002/slct.202103601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- G. Balu Mahendran
- PG and Research Department of Chemistry A.V.V.M Sri Pushpam College (Autonomous) Affiliated to Bharathidasan University Poondi, Thanjavur Tamil Nadu 613 503 India
| | - S. Jothi Ramalingam
- PG and Research Department of Chemistry A.V.V.M Sri Pushpam College (Autonomous) Affiliated to Bharathidasan University Poondi, Thanjavur Tamil Nadu 613 503 India
| | - John Bosco Balaguru Rayappan
- School of Electrical & Electronics Engineering SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB) SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
| | - Manju Bhargavi Gumpu
- Department of Physics National Institute of Technology Tiruchirappalli 620 015 Tamil Nadu India
| | - Rajendran Ganesh Kumar
- PG and Research Department of Chemistry Pachaiyappa's College Chennai 600 030 Tamil Nadu India
| | - Muthaiyan Lakshmanakumar
- School of Electrical & Electronics Engineering SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB) SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
| | - Noel Nesakumar
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB) SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
- School of Chemical & Biotechnology SASTRA Deemed to be University Thanjavur 613 401 Tamil Nadu India
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Raza A, Qumar U, Hassan J, Ikram M, Ul-Hamid A, Haider J, Imran M, Ali S. A comparative study of dirac 2D materials, TMDCs and 2D insulators with regard to their structures and photocatalytic/sonophotocatalytic behavior. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01475-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Ikram M, Raza A, Imran M, Ul-Hamid A, Shahbaz A, Ali S. Hydrothermal Synthesis of Silver Decorated Reduced Graphene Oxide (rGO) Nanoflakes with Effective Photocatalytic Activity for Wastewater Treatment. NANOSCALE RESEARCH LETTERS 2020; 15:95. [PMID: 32346803 PMCID: PMC7188753 DOI: 10.1186/s11671-020-03323-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/13/2020] [Indexed: 05/21/2023]
Abstract
Graphene oxide (GO) was obtained through modified hummers method, and reduced graphene oxide (rGO) was acquired by employing heat treatment. Various concentrations (2.5, 5, 7.5, and 10 wt. %) of silver (Ag) were incorporated in GO nanosheets by adopting hydrothermal approach. Synthesized Ag decorated rGO photocatalyst Ag/rGO was characterized using X-ray diffraction (XRD) to determine phase purity and crystal structure. XRD patterns showed the formation of GO to Ag/rGO. Molecular vibration and functional groups were determined through Fourier Transform Infrared spectroscopy (FTIR). Optical properties and a decrease in bandgap with insertion of Ag were confirmed with UV-Visible (Uv-Vis) spectrophotometer and photoluminescence (PL). Electronic properties and disorders in carbon structures were investigated through Raman spectroscopy that revealed the existence of characteristic bands (D and G). Surface morphology of prepared samples was examined with field emission scanning electron microscope (FESEM). Homogeneous distribution, size, and spherical shape of Ag NPs over rGO sheets were further confirmed with the help of high-resolution transmission electron microscope (HR-TEM). Dye degradation of doped and undoped samples was examined through Uv-Vis spectra. Experimental results indicated that photocatalytic activity of Ag@rGO enhanced with increased doping ratio owing to diminished electron-hole pair recombination. Therefore, it is suggested that Ag@rGO can be used as a beneficial and superior photocatalyst to clean environment and wastewater.
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Affiliation(s)
- Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore, Punjab 54000 Pakistan
| | - Ali Raza
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - Muhammad Imran
- State key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing, 100029 China
| | - Anwar Ul-Hamid
- Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran, 31261 Saudi Arabia
| | - Atif Shahbaz
- Department of Physics, Government College University Lahore, Lahore, Punjab 54000 Pakistan
| | - Salamat Ali
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
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