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Arjun Kumar B, Elangovan T, Karthigaimuthu D, Aravinth D, Ramalingam G, Ran F, Sangaraju S. CdSe Quantum Dots Bedecked on ZnO/TiO 2/CuO Ternary Nanocomposite for Enhanced Photocatalytic and Photovoltaic Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15864-15877. [PMID: 37924331 DOI: 10.1021/acs.langmuir.3c01428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
Herein, we synthesized a CdSe quantum dots (QDs)-decorated ternary metal oxide nanocomposite of ZnO/TiO2/CuO through a simple hydrothermal method. The prepared nanocomposite exhibited monoclinic, hexagonal, and cubic phase structures in XRD (X-ray diffraction) analysis. UV-vis absorbance spectra showed the broad absorption spectrum. SEM (scanning electron microscopy) clearly showed the presence of nanoparticles and confirmed the elements through elemental mapping. TEM (transmission electron microscopy) confirmed the nanostructure of metal oxides decorated with QDs. The average particle size was 45 nm for metal oxides and 7 nm for QDs. XPS (X-ray photoelectron spectroscopy) also confirmed the surface elemental composition. The prepared nanocomposites were introduced as photoanodes in DSSCs (dye-sensitized solar cells) and as photocatalysts for industrial dye solution. Among these samples, CdSe@CuO/TiO2/ZnO showed an improved performance of PCE (photon conversion efficiency) of 3.68% in DSSC and 96% photocatalytic degradation efficiency. It showed a recycling efficiency of ∼92% after 4 cycles against methylene blue (MB) organic dye under visible light irradiation.
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Affiliation(s)
- B Arjun Kumar
- Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Thangavel Elangovan
- Department of Energy Science, Periyar University, Salem 636011, Tamil Nadu, India
| | | | - D Aravinth
- Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
- Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, India
| | - Gopal Ramalingam
- Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730500, China
| | - Sambasivam Sangaraju
- National Water and Energy Center, United Arab Emirates University, Al Ain15551, UAE
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Bang J, Kwon H, Kim S, Kang SB. Preparation of InP quantum dots-TiO2 nanoparticle composites with enhanced visible light induced photocatalytic activity. CrystEngComm 2022. [DOI: 10.1039/d2ce00365a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Environmentally friendly InP-based quantum dots (QDs) are expected to be ideal visible-light-harvesting materials because of their unique photophysical properties. Herein, we report on the results of using a combination of...
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A detailed comparative study on electrical and photovoltaic characteristics of Al/p-Si photodiodes with coumarin-doped PVA interfacial layer: the effect of doping concentration. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02704-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Laatar F, Moussa H, Alem H, Balan L, Girot E, Medjahdi G, Ezzaouia H, Schneider R. CdSe nanorod/TiO 2 nanoparticle heterojunctions with enhanced solar- and visible-light photocatalytic activity. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:2741-2752. [PMID: 29354345 PMCID: PMC5753051 DOI: 10.3762/bjnano.8.273] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 11/27/2017] [Indexed: 05/15/2023]
Abstract
CdSe nanorods (NRs) with an average length of ≈120 nm were prepared by a solvothermal process and associated to TiO2 nanoparticles (Aeroxide® P25) by annealing at 300 °C for 1 h. The content of CdSe NRs in CdSe/TiO2 composites was varied from 0.5 to 5 wt %. The CdSe/TiO2 heterostructured materials were characterized by XRD, TEM, SEM, XPS, UV-visible spectroscopy and Raman spectroscopy. TEM images and XRD patterns show that CdSe NRs with wurtzite structure are associated to TiO2 particles. The UV-visible spectra demonstrate that the narrow bandgap of CdSe NRs serves to increase the photoresponse of CdSe/TiO2 composites until ≈725 nm. The CdSe (2 wt %)/TiO2 composite exhibits the highest photocatalytic activity for the degradation of rhodamine B in aqueous solution under simulated sunlight or visible light irradiation. The enhancement in photocatalytic activity likely originates from CdSe sensitization of TiO2 and the heterojunction between these materials which facilitates electron transfer from CdSe to TiO2. Due to its high stability (up to ten reuses without any significant loss in activity), the CdSe/TiO2 heterostructured catalysts show high potential for real water decontamination.
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Affiliation(s)
- Fakher Laatar
- Laboratory of Semiconductors, Nanostructures and Advanced Technology (LSNTA), Center for Research and Technology Energy, Tourist Route Soliman, BP 95, 2050 Hammam-Lif, Tunisia
- rue Grandville 54001 Nancy, France
| | - Hatem Moussa
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS Université de Lorraine
| | - Halima Alem
- Institut Jean Lamour (IJL), UMR 7198 CNRS Université de Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy Cedex, France
| | - Lavinia Balan
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS UMR 7361, 15 rue Jean Starcky, 68093 Mulhouse, France
| | - Emilien Girot
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS Université de Lorraine
| | - Ghouti Medjahdi
- Institut Jean Lamour (IJL), UMR 7198 CNRS Université de Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy Cedex, France
| | - Hatem Ezzaouia
- Laboratory of Semiconductors, Nanostructures and Advanced Technology (LSNTA), Center for Research and Technology Energy, Tourist Route Soliman, BP 95, 2050 Hammam-Lif, Tunisia
- rue Grandville 54001 Nancy, France
| | - Raphaël Schneider
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS Université de Lorraine
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Guo Y, Chen J, Ding Z, Guo T, Wei J, Ye X, Xu W, Zhou Z. Simple synthesis of lithium-doped sulfated titania nanoparticles and their high visible light photocatalytic activity under negative bias electrostatic field. RSC Adv 2016. [DOI: 10.1039/c6ra19815e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Li-doped TiO2/SO42− nanoparticles were successfully synthesized via a simple calcinination process in a vacuum environment using Ti(SO4)2 and LiBr as precursors, and were characterised by TEM, XRD, IR, DLS, XPS and UV-vis (DRS).
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Affiliation(s)
- Yu Guo
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
- College of Chemistry and Materials Engineering
| | - Junhua Chen
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- China
| | - Zhijie Ding
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- China
| | - Teng Guo
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- China
| | - Jumeng Wei
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- China
| | - Xiangju Ye
- College of Chemistry and Materials Engineering
- Anhui Science and Technology University
- Bengbu
- China
| | - Weibing Xu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Zhengfa Zhou
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
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