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Zajac W, Rozycka A, Trenczek-Zajac A. Rational Design of the Electronic Structure of CdS Nanopowders. Inorg Chem 2023. [PMID: 37384422 DOI: 10.1021/acs.inorgchem.3c00935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
In this study, various techniques, such as energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Raman spectroscopy, and spectrophotometry, were used to analyze the properties of nanometric CdS particles synthesized with varying precursor concentrations. EDX analysis revealed the nonstoichiometric composition manifested by an increase in the Cd/S ratio from 1.02 up to 1.43 with increasing precursor concentration. The growth of lattice parameters and unit cell volume accompanying preferential crystallization of the hexagonal phase along with an increasing Cd/S ratio was confirmed by XRD analysis. This indicated the presence of interstitial cadmium in nonstoichiometric Cd1+xS. The formation of shallow Cdi donor levels below the bottom edge of the conduction band impacts the bang-gap energy; a decrease from 2.56 to 2.21 eV along with increasing nonstoichiometry was observed. This is accompanied by a widening of the range of absorption of light, which creates conditions that can lead to an increase in the efficiency of redox reactions in photochemical processes.
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Affiliation(s)
- Wojciech Zajac
- Faculty of Energy and Fuels, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Agnieszka Rozycka
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Anita Trenczek-Zajac
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
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2
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Ismail W, Ibrahim G, Habib MA, Alduaij OK, Abdelfatah M, El-Shaer A. Advancement of Physical and Photoelectrochemical Properties of Nanostructured CdS Thin Films toward Optoelectronic Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111764. [PMID: 37299667 DOI: 10.3390/nano13111764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023]
Abstract
CdS thin films were grown on an FTO substrate at different temperatures, employing the low-cost hydrothermal method. All the fabricated CdS thin films were studied using XRD, Raman spectroscopy, SEM, PL spectroscopy, a UV-Vis spectrophotometer, photocurrent, Electrochemical Impedance Spectroscopy (EIS), and Mott-Schottky measurements. According to the XRD results, all the CdS thin films were formed in a cubic (zinc blende) structure with a favorable (111) orientation at various temperatures. The Scherrer equation was used to determine the crystal size of the CdS thin films, which varied from 25 to 40 nm. The SEM results indicated that the morphology of thin films seems to be dense, uniform, and tightly attached to the substrates. PL measurements showed the typical green and red emission peaks of CdS films at 520 nm and 705 nm, and these are attributable to free-carrier recombination and sulfur vacancies or cadmium vacancies, respectively. The optical absorption edge of the thin films was positioned between 500 and 517 nm which related to the CdS band gap. For the fabricated thin films, the estimated Eg was found to be between 2.50 and 2.39 eV. According to the photocurrent measurements, the CdS thin films grown were n-type semiconductors. As indicated by EIS, resistivity to charge transfer (RCT) decreased with temperature, reaching its lowest level at 250 °C. Flat band potential and donor density were found to fluctuate with temperature, from 0.39 to 0.76 V and 4.41 × 1018 to 15.86 × 1018 cm-3, respectively, according to Mott-Schottky measurements. Our results indicate that CdS thin films are promising candidates for optoelectronic applications.
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Affiliation(s)
- Walid Ismail
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Ghada Ibrahim
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Mohamed A Habib
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Chemistry of Tanning Materials and Leather Technology Department, Chemical Industries Institutes, National Research Center, Dokki, Giza 12622, Egypt
| | - Omar K Alduaij
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Mahmoud Abdelfatah
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Abdelhamid El-Shaer
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
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3
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Abd Elkodous M, Kawamura G, Matsuda A. Al–SrTiO3/Au/CdS Z-schemes for the efficient photocatalytic H2 production under visible light. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2023. [DOI: 10.1016/j.ijhydene.2023.05.140] [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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4
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Ghosh A, Karmakar S, Rahimi FA, Roy RS, Nath S, Gautam UK, Maji TK. Confinement Matters: Stabilization of CdS Nanoparticles inside a Postmodified MOF toward Photocatalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25220-25231. [PMID: 35613366 DOI: 10.1021/acsami.1c23458] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Insights into developing innovative routes for the stabilization of photogenerated charge-separated states by suppressing charge recombination in photocatalysts is a topic of immense importance. Herein, we report the synthesis of a metal-organic framework (MOF)-based composite where CdS nanoparticles (NPs) are confined inside the nanosized pores of Zr4+-based MOF-808, namely, CdS@MOF-808. Anchoring l-cysteine into the nanospace of MOF-808 via postsynthetic ligand exchange allows the capture of Cd2+ ions from their aqueous solution, which are further utilized for in situ growth of CdS NPs inside the nanosized MOF pores. The formation of CdS@MOF-808 opens up a possibility for visible-light photocatalysis as CdS NPs (1-2 nm) are a well-studied semiconductor system with a band gap of ∼2.6 eV. The confinement of the CdS NPs inside the MOF pores, close to the Zr4+ cluster, opens up a shorter electron transfer route from CdS to the catalytic Zr4+ cluster and shows a high rate of H2 evolution (10.41 mmol g-1 h-1) from water with a loading of 3.56 wt % CdS. In contrast, a similar composite in which CdS NPs are stabilized on the external surface of MOF-808 reveals poor activity (0.15 mmol g-1 h-1). CdS NPs stabilized on the MOF-808 surface show slower and inefficient electron transfer kinetics compared to CdS stabilized inside the nanospace of the MOF, as realized by the transient absorption measurements. Therefore, this work unveils the critical role of stabilizing the photosensitizer NPs in close proximity of the catalytic sites in MOF systems towards developing highly efficient H2 evolution photocatalysts.
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Affiliation(s)
- Adrija Ghosh
- New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
| | - Sanchita Karmakar
- Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
| | - Faruk Ahamed Rahimi
- Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
| | - Raj Sekhar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India
| | - Sukhendu Nath
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Mumbai 400085, India
| | - Ujjal K Gautam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India
| | - Tapas Kumar Maji
- New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
- Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
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5
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Shalabayev Z, Baláž M, Khan N, Nurlan Y, Augustyniak A, Daneu N, Tatykayev B, Dutková E, Burashev G, Casas-Luna M, Džunda R, Bureš R, Čelko L, Ilin A, Burkitbayev M. Sustainable Synthesis of Cadmium Sulfide, with Applicability in Photocatalysis, Hydrogen Production, and as an Antibacterial Agent, Using Two Mechanochemical Protocols. NANOMATERIALS 2022; 12:nano12081250. [PMID: 35457958 PMCID: PMC9024533 DOI: 10.3390/nano12081250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/29/2022] [Accepted: 04/02/2022] [Indexed: 01/20/2023]
Abstract
CdS nanoparticles were successfully synthesized using cadmium acetate and sodium sulfide as Cd and S precursors, respectively. The effect of using sodium thiosulfate as an additional sulfur precursor was also investigated (combined milling). The samples were characterized by XRD, Raman spectroscopy, XPS, UV-Vis spectroscopy, PL spectroscopy, DLS, and TEM. Photocatalytic activities of both CdS samples were compared. The photocatalytic activity of CdS, which is produced by combined milling, was superior to that of CdS, and was obtained by an acetate route in the degradation of Orange II under visible light irradiation. Better results for CdS prepared using a combined approach were also evidenced in photocatalytic experiments on hydrogen generation. The antibacterial potential of mechanochemically prepared CdS nanocrystals was also tested on reference strains of E. coli and S. aureus. Susceptibility tests included a 24-h toxicity test, a disk diffusion assay, and respiration monitoring. Bacterial growth was not completely inhibited by the presence of neither nanomaterial in the growth environment. However, the experiments have confirmed that the nanoparticles have some capability to inhibit bacterial growth during the logarithmic growth phase, with a more substantial effect coming from CdS nanoparticles prepared in the absence of sodium thiosulfate. The present research demonstrated the solvent-free, facile, and sustainable character of mechanochemical synthesis to produce semiconductor nanocrystals with multidisciplinary application.
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Affiliation(s)
- Zhandos Shalabayev
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
- Scientific Center for Anti-Infectious Drugs, Al-Farabi Ave. 75B, Almaty 050060, Kazakhstan;
- Correspondence: ; Tel.: +7-707-793-17-65
| | - Matej Baláž
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia; (M.B.); (E.D.)
| | - Natalya Khan
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
| | - Yelmira Nurlan
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
| | - Adrian Augustyniak
- Chair of Building Materials and Construction Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany;
- Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Nina Daneu
- Jožef Stefan Institute, Jamova Cesta 39, 01000 Ljubljana, Slovenia;
| | - Batukhan Tatykayev
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
| | - Erika Dutková
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia; (M.B.); (E.D.)
| | - Gairat Burashev
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
| | - Mariano Casas-Luna
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic; (M.C.-L.); (L.Č.)
- Department of Physics of Materials, Charles University, 121 16 Prague, Czech Republic
| | - Róbert Džunda
- Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia; (R.D.); (R.B.)
| | - Radovan Bureš
- Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia; (R.D.); (R.B.)
| | - Ladislav Čelko
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic; (M.C.-L.); (L.Č.)
| | - Aleksandr Ilin
- Scientific Center for Anti-Infectious Drugs, Al-Farabi Ave. 75B, Almaty 050060, Kazakhstan;
| | - Mukhambetkali Burkitbayev
- General and Inorganic Chemistry Department, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan; (N.K.); (Y.N.); (B.T.); (G.B.); (M.B.)
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6
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Sharma S, Kumar D, Khare N. Hierarchical PANI/CdS nanoarchitecture system for visible light induced photocatalytic dye degradation and photoelectrochemical water splitting. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Sun C, Karuppasamy L, Gurusamy L, Yang HJ, Liu CH, Dong J, Wu JJ. Facile sonochemical synthesis of CdS/COF heterostructured nanocomposites and their enhanced photocatalytic degradation of Bisphenol-A. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118873] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Naranthatta S, Janardhanan P, Pilankatta R, Nair SS. Green Synthesis of Engineered CdS Nanoparticles with Reduced Cytotoxicity for Enhanced Bioimaging Application. ACS OMEGA 2021; 6:8646-8655. [PMID: 33817526 PMCID: PMC8015075 DOI: 10.1021/acsomega.1c00519] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/02/2021] [Indexed: 05/27/2023]
Abstract
The modern epoch of semiconductor nanotechnology focuses on its application in biology, especially in medical sciences, to fetch direct benefits to human life. Fabrication of devices for biosensing and bioimaging is a vibrant research topic nowadays. Luminescent quantum dots are the best option to move with, but most of them are toxic to living organisms and hence cannot be utilized for biological applications. Recent publications demonstrate that surface treatment on the nanoparticles leads to enhanced luminescence properties with a drastic reduction in toxicity. The current work introduces surface-modified CdS, prepared via a simple green chemical route with different medicinal leaf extracts as the reaction media. Lower toxicity and multiple emissions in the visible region, observed for the CdS-O.tenuiflorum hybrid structures, make them a better option for future biological applications. Furthermore, the hybrid structure showed enhanced electrical properties, which promises its use in modifying the current optoelectronic devices.
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Affiliation(s)
- Susha Naranthatta
- Department
of Physics, Central University of Kerala, Kasaragod 671316, India
| | - Prajit Janardhanan
- Department
of Biochemistry and Molecular Biology, Central
University of Kerala, Kasaragod 671316, India
| | - Rajendra Pilankatta
- Department
of Biochemistry and Molecular Biology, Central
University of Kerala, Kasaragod 671316, India
| | - Swapna S Nair
- Department
of Physics, Central University of Kerala, Kasaragod 671316, India
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9
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Ibrahim I, Lim HN, Huang NM, Jiang ZT, Altarawneh M. Selective and sensitive visible-light-prompt photoelectrochemical sensor of Cu 2+ based on CdS nanorods modified with Au and graphene quantum dots. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122248. [PMID: 32062348 DOI: 10.1016/j.jhazmat.2020.122248] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
Nowadays, increasing the risk for copper leaching into the drinking water in homes, hotels and schools has become unresolved issues all around the countries such as Canada, the United States, and Malaysia. The leaching of copper in tap water is due to a combination of acidic water, damaged pipes, and corroded plumbing fixtures. To remedy this global problem, a triple interconnected structure of CdS/Au/GQDs was designed as a photo-to-electron conversion medium for a real time and selective visible-light-prompt photoelectrochemical (PEC) sensor for Cu2+ ions in real water samples. The synergistic interaction of the CdS/Au/GQDs enabled the smooth transportation of charge carriers to the charge collector and provided a channel to inhibit the charge recombination reaction. Thus, a detection limit of 2.27 nM was obtained, which is 10,000 fold lower than that of WHO's Guidelines for Drinking-water Quality (∼30 μM). The photocurrent reduction was negligible after 30 days of storage under ambient conditions, suggesting the high stability of photoelectrode. Moreover, the real-time monitoring of Cu2+ ions in real samples was performed with satisfactory results, confirming the capability of the investigated photoelectrode as the most practical detector for trace amounts of Cu2+ ions.
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Affiliation(s)
- Izwaharyanie Ibrahim
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Hong Ngee Lim
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Nay Ming Huang
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor Darul Ehsan 43900, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhong-Tao Jiang
- School of Engineering & Information Technology, Murdoch University, Murdoch, WA 6150, Australia
| | - Mohammednoor Altarawneh
- School of Engineering & Information Technology, Murdoch University, Murdoch, WA 6150, Australia
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10
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Rod-Shaped Carbon Aerogel-Assisted CdS Nanocomposite for the Removal of Methylene Blue Dye and Colorless Phenol. CRYSTALS 2020. [DOI: 10.3390/cryst10040300] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A carbon aerogel (CA)-assisted CdS nanocomposite was prepared by hydrothermal process and was investigated as a photocatalyst towards the photodegradation of methylene blue (MB) dye and colorless phenol under visible light irradiation (VLI). CdS have attracted wide attention due to their relatively narrow band gap for the visible light effect and the suitably negative potential of the conduction band (CB) edge for the neutralization of H+ ions. The obtained characterization results suggest that the CA-assisted CdS nanocomposite has enhanced photophysical properties, a more surface area, and the desired morphology at the nm scale. Under optimization, CdS CA 8% shows superior catalytic activity for degradation compared with other samples. The photocatalytic activities of the as-synthesized samples were examined under VLI through the MB and phenol degradation. Compared with pure CA and CdS, the CA (8%)-assisted CdS nanoparticles (NPs) offer significantly enhanced photocatalytic efficiency for MB and phenol. The mechanism of photocatalytic reaction was examined by adding various scavengers, and the results revealed that the holes generated in CA (8%)-assisted CdS NPs have a crucial impact on the visible light photocatalytic process. The improved photocatalytic degradation was due to the strong interaction between the CA and CdS NPs.
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Souza EA, Araújo RJ, Silva MVS, Silva LA. Photocatalytic treatment of tannery wastewater using reduced graphene oxide and CdS/ZnO to produce hydrogen with simultaneous sulfide abatement. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1376-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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12
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Jayaraman V, Palanivel B, Ayappan C, Chellamuthu M, Mani A. CdZnS solid solution supported Ce2Sn2O7 pyrochlore photocatalyst that proves to be an efficient candidate towards the removal of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Mezzetti A, Balandeh M, Luo J, Bellani S, Tacca A, Divitini G, Cheng C, Ducati C, Meda L, Fan H, Di Fonzo F. Hyperbranched TiO 2-CdS nano-heterostructures for highly efficient photoelectrochemical photoanodes. NANOTECHNOLOGY 2018; 29:335404. [PMID: 29808827 DOI: 10.1088/1361-6528/aac852] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Quasi-1D-hyperbranched TiO2 nanostructures are grown via pulsed laser deposition and sensitized with thin layers of CdS to act as a highly efficient photoelectrochemical photoanode. The device properties are systematically investigated by optimizing the height of TiO2 scaffold structure and thickness of the CdS sensitizing layer, achieving photocurrent values up to 6.6 mA cm-2 and reaching saturation with applied biases as low as 0.35 VRHE. The high internal conversion efficiency of these devices is to be found in the efficient charge generation and injection of the thin CdS photoactive film and in the enhanced charge transport properties of the hyperbranched TiO2 scaffold. Hence, the proposed device represents a promising architecture for heterostructures capable of achieving high solar-to-hydrogen efficiency.
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Affiliation(s)
- Alessandro Mezzetti
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
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14
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Singh S, Khare N. CdS/ZnO core/shell nano-heterostructure coupled with reduced graphene oxide towards enhanced photocatalytic activity and photostability. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.05.074] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Structural tuning of CdS nanoparticles with nucleation temperature and its reflection on the optical properties. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.04.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Saxena N, Kumar P, Gupta V. CdS : SiO2 nanocomposite as a luminescence-based wide range temperature sensor. RSC Adv 2015. [DOI: 10.1039/c5ra13740c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A wide range (20–560 K) temperature sensor exhibiting linear behavior in entire range is devised from CdS:SiO2 nanocomposite with average sensitivity and resolution ≈10−2 K−1 & 10−4 K respectively and maximum relative sensitivity ~8.4% K−1 at 120 K.
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Affiliation(s)
- Nupur Saxena
- Department of Physics & Astrophysics
- University of Delhi
- Delhi-110 007
- India
| | - Pragati Kumar
- Department of Physics & Astrophysics
- University of Delhi
- Delhi-110 007
- India
| | - Vinay Gupta
- Department of Physics & Astrophysics
- University of Delhi
- Delhi-110 007
- India
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17
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Singh S, Khare N. Reduced graphene oxide coupled CdS/CoFe2O4 ternary nanohybrid with enhanced photocatalytic activity and stability: a potential role of reduced graphene oxide as a visible light responsive photosensitizer. RSC Adv 2015. [DOI: 10.1039/c5ra14889h] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the coupling of a CdS/CoFe2O4 core/shell nanorod heterostructure onto 2D platform of reduced graphene oxide (RGO) sheets in which a role of RGO as a visible light responsive photosensitizer is shown for enhanced photocatalytic activity.
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Affiliation(s)
- Simrjit Singh
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi
- India
| | - Neeraj Khare
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi
- India
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18
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Zhao R, Wang P, Yao BB, Hu TT, Yang TY, Xiao BX, Wang SM, Xiao CH, Zhang MZ. Co effect on zinc blende–rocksalt phase transition in CdS nanocrystals. RSC Adv 2015. [DOI: 10.1039/c4ra14798g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The Co dopant significantly promotes the zinc blende to rocksalt phase transition and increases the bulk modulus compared with CdS nanocrystals.
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Affiliation(s)
- Rui Zhao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
- College of Computer
| | - Pan Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Bin-bin Yao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Ting-ting Hu
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Tian-ye Yang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Bing-xin Xiao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Shuang-ming Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Chuan-hai Xiao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Ming-zhe Zhang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
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