1
|
Ray P, Pal S, Sarkar A, Sultana F, Basu A, Show B. Oyster Pearl-Shaped Ternary Iron Chalcogenide, FeSe 0.5Te 0.5, Films on FTO through Electrochemical Growth from the Exchange of Chalcogens Boosted the Enzyme-Free Urea-Sensing Ability toward Real Analytes. ACS Appl Bio Mater 2024; 7:1621-1642. [PMID: 38430188 DOI: 10.1021/acsabm.3c01086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Here, iron chalcogenide thin films were developed for the first time by using the less hazardous electrodeposition technique at optimized conditions on an FTO glass substrate. The chalcogenides have different surface, morphological, structural, and optical properties, as well as an enzyme-free sensing behavior toward urea. Numerous small crystallites of about ∼20 to 25 nm for FeSe, ∼18 to 25 nm for FeTe, and ∼18 to 22 nm in diameter for FeSeTe are observed with partial agglomeration under an electron microscope, having a mixed phase of tetragonal and orthorhombic structures of FeSe, FeTe, and, FeSeTe, respectively. Profilometry, XRD, FE-SEM, HR-TEM, XPS, EDX, UV-vis spectroscopy, and FT-IR spectroscopy were used for the analysis of binary and ternary composite semiconductors, FeSe, FeTe, and FeSeTe, respectively. Electrochemical experiments were conducted with the chalcogenide thin films and urea as the analyte in phosphate-buffered media at a pH of ∼ 7.4 in the concentration range of 3-413 μM. Cyclic voltammetry was performed to determine the sensitivity of the prepared electrode at an optimized scan rate of 50 mV s-1. The electrodeposited chalcogenide films appeared with a low detection limit and satisfactory sensitivity, of which the ternary chalcogenide film has the lowest LOD of 1.16 μM and the maximum sensitivity of 74.22 μA μM-1 cm-2. The transition metal electrode has a very wide range of detection limit of 1.25-2400 μM with a short response time of 4 s. This fabricated biosensor is capable of exhibiting almost 75% of its starting activity after 2 weeks of storage in the freezer at 4 °C. Simple methods of preparation, a cost-effective process, and adequate electrochemical sensing of urea confirm that the prepared sensor is suitable as an enzyme-free urea sensor and can be utilized for future studies.
Collapse
Affiliation(s)
- Purbali Ray
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Sunanda Pal
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Abhimanyu Sarkar
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Farhin Sultana
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Arghyadeep Basu
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | | |
Collapse
|
2
|
Ghorui UK, Show B, Roy D, Basak A, Adhikary B, Mondal A. Strategically Designed Pd-Induced Changes in Alkaline Hydrogen Evolution Reaction and Oxygen Evolution Reaction Performances of Electrochemical Water Oxidation by the Galvanically Synthesized MoO 2/MoO 3 Composite Thin Film. ACS Appl Mater Interfaces 2024; 16:3460-3475. [PMID: 38224570 DOI: 10.1021/acsami.3c16499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Electrochemical water oxidation is believed to be an effective pathway to produce clean, carbon-free, and environmentally sustainable green energy. In this work, we report a simple, easy-to-construct, facile, low-cost, and single-step galvanic technique to synthesize a Pd-supported temperature-assisted MoOx thin film nanocomposite for effective water oxidation. The most suitable nanocomposite exhibits very low overpotential at 10 mA/cm2 with smaller Tafel slope values for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) processes in an alkaline medium. The formation of a metal oxide-metal junction accelerates the growth of more active sites, promoting induced electronic synergism at the MoOx-Pd interface. This endows higher electrical conductivity and faster electron transfer kinetics, thus accelerating the faster water dissociation reaction following the Tafel-Volmer mechanism to boost the HER process in an alkaline medium. The excellent electrochemical HER and OER performances of our electrocatalyst even supersede the accomplishments of the benchmark catalysts Pt/C and RuO2. Moreover, neither of these two catalysts demonstrates both catalytic reactions, i.e., HER and OER at the same time, which have been observed for our synthesized catalyst. Our findings illustrate the potential of a thin-film MoOx-Pd nanocomposite to be an exceedingly effective electrocatalyst developed by interface engineering strategies. This also provides insight into designing several other semiconductor composite catalysts using simple synthesis techniques for highly efficient HER/OER processes that could be alternatives to benchmark electrocatalysts for water electrolysis.
Collapse
Affiliation(s)
- Uday Kumar Ghorui
- Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | | | - Dipayan Roy
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata 700032, India
| | - Arindam Basak
- Thin Film Photovoltaic Lab, School of Electronics Engineering, KIIT-Deemed to Be University, Bhubaneswar 751024, Odisha, India
| | - Bibhutosh Adhikary
- Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Anup Mondal
- Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| |
Collapse
|
3
|
Pal S, Mahamiya V, Ray P, Sarkar A, Sultana F, Adhikary B, Chakraborty B, Show B. β-Bi 2O 3-Bi 2WO 6 Nanocomposite Ornated with meso-Tetraphenylporphyrin: Interfacial Electrochemistry and Photoresponsive Detection of Nanomolar Hexavalent Cr. Inorg Chem 2023; 62:21201-21223. [PMID: 38078695 DOI: 10.1021/acs.inorgchem.3c03213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Hexavalent chromium exposure via inhalation, ingestion, or both has been proven to adversely affect internal organs, induce toxic effects, cause allergies, and contribute to the development of cancer. It requires a substantial and challenging effort to detect several heavy metal ions conveniently, sensitively, and reliably by using materials that are easy to synthesize and have a high yield. The impact of light on the electrocatalytic oxidation/reduction process proves an environmentally friendly methodology with numerous applications in pollution control. The extensive use of photoactive materials in photoelectrochemical (PEC) sensors necessitates the development of stable and highly effective photoactive materials. Hence, the solvothermal synthesis of the organic-inorganic hybrid nanocomposite β-Bi2O3-Bi2WO6/H2TPP with varying weight percentages of meso-tetraphenylporphyrin (H2TPP) resulted in a selective electrode for electrocatalytic and photoelectrocatalytic reduction of Cr6+ on fluorine-doped tin oxide (FTO) by an adsorption-reduction mechanism. H2TPP increases the active site density and provides an effective surface area for efficient adsorption by providing both pyridinic- and pyrrolic-N atoms to β-Bi2O3-Bi2WO6/H2TPP. H2TPP could effectively adsorb Cr6+ in the β-Bi2O3-Bi2WO6/H2TPP composite system through electrostatic interaction, and the adsorbed Cr6+ ions were reduced to trivalent chromium Cr3+, resulting in promising Cr6+ sensing. The projected density of states and Bader charge calculations result in the electrostatic attraction among the N-2p orbital of H2TPP and the 3d and 4s orbitals of the Cr atom, resulting in the adsorption of the hexavalent Cr atom onto the active center of H2TPP. Moreover, the addition of H2TPP results in the development of a mesoporous surface that offers strong electrical conductivity, a substantial surface area, improved charge-mass transport, intimate contact between the electrolyte and catalyst, an extended fluorescence lifetime, and increased stability. The role of pH values was thoroughly investigated. All electrochemical and photoelectrochemical studies were carried out on 5 wt % H2TPP-ornated β-Bi2O3-Bi2WO6. Nanocomposite β-Bi2O3-Bi2WO6/5 wt % H2TPP demonstrated reliable cyclic stability, reproducibility, good sensitivity (8.005 μA mM cm-2), and a low limit of detection (LOD) (8.0 nM) toward photoelectrocatalytic reduction of Cr6+. The interference study in the presence of a few inorganic entities exhibited excellent selectivity. This tale amplification approach for developing a β-Bi2O3-Bi2WO6/5 wt % H2TPP nanocomposite system suggests a deeper understanding of the application of photoelectrocatalytic reduction of Cr6+ in environmental remediation with real samples under light irradiation.
Collapse
Affiliation(s)
- Sunanda Pal
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Vikram Mahamiya
- National Institute for Materials Science, Namiki1-1, Tsukuba, Ibaraki 305-0044, Japan
- Karpagam Academy of Higher Education, Pollachi Main Road, Eachanari Post, Coimbatore 641 021, Tamil Nadu, India
| | - Purbali Ray
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Abhimanyu Sarkar
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Farhin Sultana
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Bibhutosh Adhikary
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, West Bengal, India
| | - Brahmananda Chakraborty
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
| | | |
Collapse
|
4
|
Banerjee NS, Ghosh D, Mitra I, Paul S, Show B, Ganguly T, Chakraborty M. Interactive study of Au20 nanocluster and methyl substituted amide linked tyrosine/tryptophan to develop representative model for studying protein-nanoparticle interaction. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
5
|
Pal S, Sarkar A, Satra J, Mondal P, Ray P, Srivastava DN, Adhikary B, Show B. Tetraphenylporphyrin Decorated Bi 2MoO 6 Nanocomposite: Its Twin Affinity of Oxygen Reduction Reaction and Electrochemical Detection of 4-Nitrophenol. Inorg Chem 2022; 61:17402-17418. [DOI: 10.1021/acs.inorgchem.2c01887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sunanda Pal
- Department of Chemistry, Jadavpur University, Kolkata700032, India
| | - Abhimanyu Sarkar
- Department of Chemistry, Jadavpur University, Kolkata700032, India
| | - Jit Satra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah711 103, West Bengal, India
| | - Papri Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah711 103, West Bengal, India
| | - Purbali Ray
- Department of Chemistry, Jadavpur University, Kolkata700032, India
| | - Divesh N. Srivastava
- Department of Analytical Science, Central Salt and Marine Chemicals Research Institute, Bhavnagar364002, Gujarat, India
| | - Bibhutosh Adhikary
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah711 103, West Bengal, India
| | | |
Collapse
|
6
|
Chakraborty M, Mitra I, Sarkar K, Bardhan M, Paul S, Basu S, Goswami A, Saha A, Show B, Ganguly T. Fluorescence enhancement via aggregation effect due to microenvironmental alterations in human hemoglobin protein in presence of carbon quantum dots (CQD): Comparative spectroscopic approach. Spectrochim Acta A Mol Biomol Spectrosc 2019; 215:313-326. [PMID: 30851689 DOI: 10.1016/j.saa.2019.02.108] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 02/18/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
CQDs have emerged with outstanding properties as a star member of carbon nanomaterial family and in order to reveal its wide-range of application in biological microenvironment the interactions between human hemoglobin (HHb) and CQD and also with ethylenediamine-functionalized CQD (NCQD) are assessed using several techniques. Firstly, UV-vis absorption spectra of HHb reveal hyperchromic effect in the region of absorbance of tryptophan and tyrosine residues and also hypochromicity of Soret band in presence of CQD and NCQD. Interestingly, steady-state fluorescence spectroscopy reveal distinct fluorescence enhancement of HHb with significant red shift thereby indicating exposures of tryptophan and tyrosine residues to a more hydrophilic environment. However synchronous fluorescence spectra reveal that the microenvironment of tryptophan and tyrosine residues is altered in opposite manner, i.e. exposure of tryptophan residues to a more hydrophilic environment and the tyrosine residues to a more hydrophobic environment. Moreover the fluorescence enhancement is observed to be accompanied by increase in average fluorescence-lifetime and decrease in steady-state anisotropy thus signifying a decrease in restriction of rotational motion. Furthermore tryptophan residues within HHb appear to interact more with CQD compared to NCQD. Thermodynamic parameters as revealed by Isothermal Titration Calorimetry (ITC) demonstrate that electrostatic, hydrogen bonding and hydrophobic interactions are the predominant modes of interactions in presence of CQD. Whereas hydrophobic and hydrogen bonding interactions are the major interacting forces in presence of NCQD with five-site sequential binding as best-fit model in both the cases. Such interactions also appear to be associated with an increase in aggregation of HHb as evident from the measurements by atomic force microscopy (AFM) and dynamic light scattering (DLS) study. Although FT-IR spectra display alteration of amide I band, but the overall secondary structure of HHb seems to be nearly retained even in presence of CQDs, as evident in the CD spectra. These observations thus highlight the potential biomedical application of CQDs in biological microenvironment of human especially as drug-delivery system. Also bimolecular interaction of HHb as a model protein with other nanoparticles at the nano bio-interface has been outlined.
Collapse
Affiliation(s)
| | - Ishani Mitra
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Kuntal Sarkar
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India
| | | | - Somnath Paul
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India
| | - Satakshi Basu
- Agriculture and Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Arunava Goswami
- Agriculture and Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Abhijit Saha
- UGC-DAE Consortium for Scientific Research, Kolkata Center, III/LB-B Bidhannagar, Kolkata 700 098, India
| | - Bibhutibhushan Show
- Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700032, India
| | - Tapan Ganguly
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India.
| |
Collapse
|
7
|
Islam AS, Sasmal M, Maiti D, Dutta A, Show B, Ali M. Design of a Pyrene Scaffold Multifunctional Material: Real-Time Turn-On Chemosensor for Nitric Oxide, AIEE Behavior, and Detection of TNP Explosive. ACS Omega 2018; 3:10306-10316. [PMID: 31459160 PMCID: PMC6645121 DOI: 10.1021/acsomega.8b01294] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 08/14/2018] [Indexed: 06/10/2023]
Abstract
A dual-emission pyrene-based new fluorescent probe (N-(4-nitro-phenyl)-N'-pyren-1-ylmethyl-ene-ethane-1,2-diamine (PyDA-NP)) displays green fluorescence for nitric oxide (NO) sensing, whereas it exhibits blue emission in the aggregated state. The mechanism of nitric oxide (NO/NO+) sensing is based on N-nitrosation of aromatic secondary amine, which was not interfered by reactive oxygen species and reactive nitrogen species. The aggregation-induced enhancement of emission (AIEE) behaviors of the PyDA-NP could be attributed to the restriction of intramolecular rotation and vibration, resulting in rigidity enhancement of the molecules. The AIEE behavior of the probe was well established from fluorescence, dynamic light scattering, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, optical fluorescence microscopy, and time-resolved photoluminescence studies. In a H2O/CH3CN binary mixture (8:2 v/v), the probe showed maximum aggregation with extensive (833-fold) increases in fluorescence intensity and high quantum yield (0.79). The aggregated state of the probe was further applied for the detection of nitroexplosives. It displayed efficient sensing of 2,4,6-trinitrophenol (TNP), corroborating mainly the charge-transfer process from pyrene to a highly electron-deficient TNP moiety. Furthermore, for the on-site practical application of the proposed analytical system, a contact-mode analysis was performed.
Collapse
Affiliation(s)
- Abu Saleh
Musha Islam
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| | - Mihir Sasmal
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| | - Debjani Maiti
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| | - Ananya Dutta
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| | - Bibhutibhushan Show
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| | - Mahammad Ali
- Department of Chemistry, Jadavpur University, 188 Raja S.C. Mallick Road, Kolkata 700032, India
| |
Collapse
|
8
|
Molla HA, Bhowmick R, Islam ASM, Show B, Mukherjee N, Mondal A, Ali M. A turn-on fluorogenic chemosensor for Fe3+ and a Schottky barrier diode with frequency-switching device applications. Photochem Photobiol Sci 2018; 17:465-473. [DOI: 10.1039/c7pp00322f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel highly sensitive and selective fluorescent chemosensor L has been synthesized and characterized by various physicochemical techniques.
Collapse
Affiliation(s)
| | | | | | | | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Anup Mondal
- Department of Chemistry
- Indian Institute of Engineering
- Science and Technology
- Howrah 711103
- India
| | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
| |
Collapse
|
9
|
Abstract
Electrochemically deposited FeS nanospheres were found to degrade efficiently a series of toxic pigments and phenol in the presence of visible light. The material also showed excellent hydrogen peroxide sensing properties.
Collapse
Affiliation(s)
- Bibhutibhushan Show
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
- Department of Chemistry
| | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Anup Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| |
Collapse
|
10
|
Mukhopadhyay K, Ghosh A, Das SK, Show B, Sasikumar P, Chand Ghosh U. Synthesis and characterisation of cerium(iv)-incorporated hydrous iron(iii) oxide as an adsorbent for fluoride removal from water. RSC Adv 2017. [DOI: 10.1039/c7ra00265c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Surface-altered hydrous iron(iii) oxide incorporating cerium(iv) (CIHFO) was prepared and characterised via modern analytical tools for applications in fluoride removal from groundwater.
Collapse
Affiliation(s)
| | - Abir Ghosh
- Department of Chemistry
- Presidency University
- Kolkata-700073
- India
| | | | | | | | | |
Collapse
|
11
|
Banerjee S, Show B, Kundu A, Ganguly J, Gangopadhyay U, Saha H, Mukherjee N. N-acetyle cysteine assisted synthesis of coreshell Ag2S with enhanced light transmission and diminished reflectance: Surface modifier for c-SiNx solar cells. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
12
|
Chabri S, Dhara A, Show B, Adak D, Sinha A, Mukherjee N. Mesoporous CuO–ZnO p–n heterojunction based nanocomposites with high specific surface area for enhanced photocatalysis and electrochemical sensing. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01573a] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous and core–shell like (p)CuO–(n)ZnO nanocomposites were prepared using microstructural refinement and solid state reactions, which showed enhanced photochemical and electrochemical performances.
Collapse
Affiliation(s)
- Sumit Chabri
- Department of Metallurgy and Materials Engineering
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Arnab Dhara
- School of Materials Science and Engineering
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | | | - Deepanjana Adak
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Arijit Sinha
- School of Materials Science and Engineering
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| |
Collapse
|
13
|
Show B, Mukherjee N, Mondal A. α-Fe2O3 nanospheres: facile synthesis and highly efficient photo-degradation of organic dyes and surface activation by nano-Pt for enhanced methanol sensing. RSC Adv 2016. [DOI: 10.1039/c6ra13385a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hematite α-Fe2O3 thin films have been deposited on FTO coated glass substrates. The films were found to perform efficiently towards electrochemical sensing of methanol and photodegradation of toxic dyes, viz. Indigo Carmine and Rhodamine B.
Collapse
Affiliation(s)
- Bibhutibhushan Show
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
- Department of Chemistry
| | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Anup Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| |
Collapse
|
14
|
Saha I, Kanrar S, Gupta K, Show B, Nandi D, Biswas K, Manna B, Chatterjee D, Chand Ghosh U. Tuned synthesis and characterizational insight into β-cyclodextrin amended hydrous iron-zirconium hybrid oxide: a promising scavenger of fluoride in aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra16567b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Fluoride adsorption on CHIZO takes place with H-bonding inside the core, thus forming an encapsulated moiety.
Collapse
Affiliation(s)
- Indranil Saha
- Department of Chemistry
- Presidency University
- Kolkata-700073
- India
- Department of Chemistry
| | - Sarat Kanrar
- Department of Chemistry
- Presidency University
- Kolkata-700073
- India
| | - Kaushik Gupta
- Department of Chemistry
- Presidency University
- Kolkata-700073
- India
| | | | - Debabrata Nandi
- Department of Civil and Chemical Engineering
- University of South Africa (UNISA)
- South Africa
| | - Krishna Biswas
- Department of Chemistry
- Maharaja Manindra Chandra College
- Kolkata-700003
- India
| | | | | | | |
Collapse
|
15
|
Banerjee S, Saha AK, Show B, Ganguly J, Bhattacharyay R, Datta SK, Saha H, Mukherjee N. A regular rippled pattern formed by the molecular self-organization of polyvinylpyrrolidone encapsulated Ag nanoparticles: a high transmissive coating for efficiency enhancement of c-Si solar cells. RSC Adv 2015. [DOI: 10.1039/c4ra11684d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Formation of PVP encapsulated Ag NPs with a regular rippled structure caused by molecular self organization is reported. Such pattern is supposed to act as an anti-reflection coating as well as plasmonic layer, for better light harvesting.
Collapse
Affiliation(s)
- Sudarshana Banerjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Ajoy K. Saha
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
- Department of Materials Science and Engineering
| | | | - Jhuma Ganguly
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Raghunath Bhattacharyay
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Swapan K. Datta
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Hiranmay Saha
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| |
Collapse
|
16
|
Show B, Mukherjee N, Mondal A. Electrochemically synthesized microcrystalline tin sulphide thin films: high dielectric stability with lower relaxation time and efficient photochemical and photoelectrochemical properties. RSC Adv 2014. [DOI: 10.1039/c4ra11140k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|