Pub Date : 2021-12-30DOI: 10.13074/jent.2021.12.21441
A. Ashibaparveen, V. Senthilkumar, Venkatesan Thirumal, P. Gowdhaman, Haresh M. Pandya
The characterization of a custom-designed GC-based SAW e-Nose sensor system is presented here to study the sensing ability of the sensor system to detect and identify low medium and high toxic vapors. A semi-automated multi-vapor generator generates vapors of chemical compounds that are then exposed to the sensing system to examine its performance under various concentrations. Time-domain verses frequency response of GC-SAW Sensor is noted for repeated cycles against different chemical compounds like xylene, 1,2 dibromoethane, dimethyl sulfate, triethyl phosphate, nitrobenzene, phosphorous trichloride being tested. The generated data is examined using a principle component analysis (PCA) technique to detect a unique response for an individual chemical compound. Experimental results are reported.
{"title":"Characterization Studies of a GC based SAW Sensor System for Potential Detection and Identification of Toxic Environmental Gases/Vapors","authors":"A. Ashibaparveen, V. Senthilkumar, Venkatesan Thirumal, P. Gowdhaman, Haresh M. Pandya","doi":"10.13074/jent.2021.12.21441","DOIUrl":"https://doi.org/10.13074/jent.2021.12.21441","url":null,"abstract":"The characterization of a custom-designed GC-based SAW e-Nose sensor system is presented here to study the sensing ability of the sensor system to detect and identify low medium and high toxic vapors. A semi-automated multi-vapor generator generates vapors of chemical compounds that are then exposed to the sensing system to examine its performance under various concentrations. Time-domain verses frequency response of GC-SAW Sensor is noted for repeated cycles against different chemical compounds like xylene, 1,2 dibromoethane, dimethyl sulfate, triethyl phosphate, nitrobenzene, phosphorous trichloride being tested. The generated data is examined using a principle component analysis (PCA) technique to detect a unique response for an individual chemical compound. Experimental results are reported.","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88051663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.13074/jent.2021.12.14446
K. Balachandran, G. Vijayakumar, S. Mageswari, A. Preethi, M.S. Viswak Senan
TiO2 nanoparticles (TiO2) and Ag-doped TiO2 nanocomposites (Ag-TiO2) were synthesized by the Sol-Gel process using titanium tetra isopropoxide as TiO2 and AgNO3 as Ag precursors, respectively. The synthesized nanocomposites were characterized by XRD, SEM, TEM, FT-IR, and UV-Visible analysis. The XRD results show that Ag doping increases the grain size from 22 nm to 36 nm. From the UV-Visible spectra, the redshift in absorbance was observed, which indicates the increase in grain size and it reduces the bandgap. The TEM analysis shows that all the particles are exhibited in the nanometer range. The synthesized nanoparticles show good photocatalytic activity, and they decompose the methyl orange dye within 5 hours.
{"title":"Synthesis and Characterization of Ag-Decorated TiO2 Nanoparticles for Photocatalytic Application","authors":"K. Balachandran, G. Vijayakumar, S. Mageswari, A. Preethi, M.S. Viswak Senan","doi":"10.13074/jent.2021.12.14446","DOIUrl":"https://doi.org/10.13074/jent.2021.12.14446","url":null,"abstract":"TiO2 nanoparticles (TiO2) and Ag-doped TiO2 nanocomposites (Ag-TiO2) were synthesized by the Sol-Gel process using titanium tetra isopropoxide as TiO2 and AgNO3 as Ag precursors, respectively. The synthesized nanocomposites were characterized by XRD, SEM, TEM, FT-IR, and UV-Visible analysis. The XRD results show that Ag doping increases the grain size from 22 nm to 36 nm. From the UV-Visible spectra, the redshift in absorbance was observed, which indicates the increase in grain size and it reduces the bandgap. The TEM analysis shows that all the particles are exhibited in the nanometer range. The synthesized nanoparticles show good photocatalytic activity, and they decompose the methyl orange dye within 5 hours.","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85782961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.03.211428
S. Karthikeyan, S. Gayathri, M. Sujatha
{"title":"Meso Porous 3D Carbon Foam using Multi-Walled Carbon Nanotubes from Methyl Ester of Jatropha Curcas Oil","authors":"S. Karthikeyan, S. Gayathri, M. Sujatha","doi":"10.13074/jent.2021.03.211428","DOIUrl":"https://doi.org/10.13074/jent.2021.03.211428","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86731391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.06.212435
Paramasivan Rajasingh, P. Banumathi P. Banumathi, G. Selvan, P. Selvakumar
{"title":"Selective Fluorescence Chemosensor for Al3+ based on Antipyrine with Furfural Attached Allyl System","authors":"Paramasivan Rajasingh, P. Banumathi P. Banumathi, G. Selvan, P. Selvakumar","doi":"10.13074/jent.2021.06.212435","DOIUrl":"https://doi.org/10.13074/jent.2021.06.212435","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80703378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.06.212437
S. Karthikeyan, M. S. M. Sujatha, N. Hemalatha
{"title":"Synthesis and Characterization of Multi-walled Carbon Nanotube from Pine Oil and Their Impact on Carbon Fibre Reinforced Epoxy Hybrid Nanocomposite","authors":"S. Karthikeyan, M. S. M. Sujatha, N. Hemalatha","doi":"10.13074/jent.2021.06.212437","DOIUrl":"https://doi.org/10.13074/jent.2021.06.212437","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85164816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.03.211429
M. R. M. Rukmangathan
{"title":"Oxidation Kinetics of some Amino Acids by 1-Chlorobenzimidazole in Acid Medium - A Kinetic and Mchanistic Approach","authors":"M. R. M. Rukmangathan","doi":"10.13074/jent.2021.03.211429","DOIUrl":"https://doi.org/10.13074/jent.2021.03.211429","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90232364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.06.212438
B. Karpagam, J. Rajesh, G. Rajagopal
{"title":"Synthesis, Characterization and Biological Activity Studies of Semicarbazone Ligand","authors":"B. Karpagam, J. Rajesh, G. Rajagopal","doi":"10.13074/jent.2021.06.212438","DOIUrl":"https://doi.org/10.13074/jent.2021.06.212438","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79604346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.06.212436
Kirthevasan Kandasamy, P. Rajasingh
The hydrothermal method was used to synthesize hexagonal 3-5 nm Cadmium Sulfide Quantum Dots (CdS QDs) with Delonix elata leaves’ aqueous extract as a capping agent. The synthesized CdS QDs were characterized by FTIR, UV-Vis, XRD, FE-SEM spectroscopies. The anticorrosion activity of the CdS QDs-coated Zn plate was exanimated under 1 M HCl, 6 M KOH, 3.5% NaCl electrolytic medium. The best corrosion resistance was achieved through the application of the CdS QDs coating on the Zn metal surface.
采用水热法制备了3 ~ 5 nm的六方硫化镉量子点(CdS QDs)。用FTIR、UV-Vis、XRD、FE-SEM对合成的CdS量子点进行了表征。在1 M HCl, 6 M KOH, 3.5% NaCl的电解介质中，考察了CdS qds包覆Zn板的防腐性能。通过在Zn金属表面涂覆CdS量子点涂层，获得了最佳的耐腐蚀性能。
{"title":"Hydrothermal Synthesis and Enhanced Corrosion Inhibition Activity of CdS QDs toward Zn Surface","authors":"Kirthevasan Kandasamy, P. Rajasingh","doi":"10.13074/jent.2021.06.212436","DOIUrl":"https://doi.org/10.13074/jent.2021.06.212436","url":null,"abstract":"The hydrothermal method was used to synthesize hexagonal 3-5 nm Cadmium Sulfide Quantum Dots (CdS QDs) with Delonix elata leaves’ aqueous extract as a capping agent. The synthesized CdS QDs were characterized by FTIR, UV-Vis, XRD, FE-SEM spectroscopies. The anticorrosion activity of the CdS QDs-coated Zn plate was exanimated under 1 M HCl, 6 M KOH, 3.5% NaCl electrolytic medium. The best corrosion resistance was achieved through the application of the CdS QDs coating on the Zn metal surface.","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85171822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.03.214433
M. Kumaresan
{"title":"Studies on Nano Naturals Dyes obtained from the Flower of Tecomacapensis","authors":"M. Kumaresan","doi":"10.13074/jent.2021.03.214433","DOIUrl":"https://doi.org/10.13074/jent.2021.03.214433","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"469 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76515871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.13074/jent.2021.03.211432
V.Kayathri V.Kayathri, K.Kousalya K.Kousalya, A.Mafeena A.Mafeena, M.Monisha M.Monisha, S. N. Nandhini, J.Balavijayalakshmi J.Balavijayalakshmi
{"title":"Impact of Reducing Agent on the Synthesis of Nickel Oxide Nanoparticles by Chemical Precipitation Method","authors":"V.Kayathri V.Kayathri, K.Kousalya K.Kousalya, A.Mafeena A.Mafeena, M.Monisha M.Monisha, S. N. Nandhini, J.Balavijayalakshmi J.Balavijayalakshmi","doi":"10.13074/jent.2021.03.211432","DOIUrl":"https://doi.org/10.13074/jent.2021.03.211432","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72959729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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