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Dissertations / Theses on the topic 'Glassy Carbon Electrode'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Perera, D. M. H. Kaushalya. "The study of DNA dynamics on glassy carbon electrode surfaces." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18191.

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Master of Science<br>Department of Chemistry<br>Daniel A. Higgins<br>The potential-dependent reorientation dynamics of double stranded DNA (ds-DNA) covalently attached to planar glassy carbon electrode (GCE) surfaces were studied in this thesis. The orientation of ds-DNA was investigated via the distance-dependent quenching of fluorescence from a 6–carboxyfluorescein (FAM6) flurophore to the electrode surface. The fluorophore was covalently bound to the distal end of the DNA. Fluorescence microscopy was employed for optical detection of FAM6 fluorescence and hence the DNA dynamics. The variati

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2

Araminaitė, Rūta. "Study of electrocatalytic processes at Prussian blue modified glassy carbon electrode." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100213_101926-62386.

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The main purpose of this work is study of electrochemical hydrogen peroxide and ascorbate reactions on electrodes modified by Prussian blue (PB), with the aim to apply these electrodes in creation of sensors and biosensors. For this purpose, a detailed study of electrochemical reduction of hydrogen peroxide, as well as of oxidation of ascorbate at Prussian blue modified rotating disk electrode. In view of the results obtained, a mechanism for hydrogen peroxide reduction at PB modified electrode has been proposed. In accordance with this mechanism, electron transfer appears to be rate-limiting

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3

Mazloum-Ardakani, M., B. B. F. Mirjalili, M. Yavari, and M. A. Sheikh-Mohseni. "Electrocatalytic Behavior of Levodopa at MultiWall Carbon Nanotubes and 4-((E)-(2-Methyl-4-Nitrophenylimino) Methyl) Benzene-1,2-Diol Modified Glassy Carbon Electrode." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34938.

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This work describes a glassy carbon electrode (GCE) modified by 4-((E)-(2-methyl-4-nitrophenylimino) methyl) benzene-1,2-diol (abbreviated as MBD) and multiwall carbon nanotubes (MWNT) as an electrochemical sensor for monitoring of levodopa (LD) concentration. Different electrochemical parameters of MBD were obtained at MWCNT-GCE by cyclic voltammetry. Also the electrocatalytic behavior of LD was investigated at the MBD-MWNT-GCE by cyclic voltammetry, chronoamperometry and differential pulse voltammetry. Using the electrocatalysis of LD V in phosphate buffer solution pH 7.0 on this modifi

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4

Dai, Yiqing. "Amperometric biosensors utilizing carbon nanotubes and metal deposits on glassy carbon electrode with poly(phenylenediamine) coatings." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/583.

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5

Pablo, Fleurdelis, of Western Sydney Nepean University, and Faculty of Science and Technology. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode." THESIS_FST_XXX_Pablo_F.xml, 1994. http://handle.uws.edu.au:8081/1959.7/207.

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This thesis describes the development of new adsorptive cathodic stripping voltammetric methods for reliable determination of some trace metals in biological and environmental materials on a glassy carbon mercury film electrode. In particular, the development of these methods involved selection of a suitable complexing agent for the respective metal ion studied, characterization of the electrode processes, investigation of factors affecting the voltammetric response such as concentration and pH of supporting electrolyte, concentration of complexing agent, accumulation potential, accumulation t

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6

Pablo, Fleurdelis. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode." Thesis, View thesis, 1994. http://handle.uws.edu.au:8081/1959.7/207.

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This thesis describes the development of new adsorptive cathodic stripping voltammetric methods for reliable determination of some trace metals in biological and environmental materials on a glassy carbon mercury film electrode. In particular, the development of these methods involved selection of a suitable complexing agent for the respective metal ion studied, characterization of the electrode processes, investigation of factors affecting the voltammetric response such as concentration and pH of supporting electrolyte, concentration of complexing agent, accumulation potential, accumulation t

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7

Pablo, Fleurdelis. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode /." View thesis, 1994. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030826.113026/index.html.

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8

Abdullahi, Mohamed Farah. "Modification of glassy carbon electrode (GCE) with prussian blue as a mediator on carbon nanotube materials through sequential deposition." Thesis, Vaal University of Technology, 2012. http://hdl.handle.net/10352/387.

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Prussian blue (PB) nanoparticles were synthesized from FeCl3.6H2O, K4[Fe(CN)6].3H2O, and from Fe(NO3)3.9H2O and K4[Fe(CN)6].3H2O, and then characterized by Fourier transform infrared (FT-IR), Ultraviolet-visible spectroscopy, X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), Scanning electron microscopy (SEM), Raman spectroscopy and thermogravimetric analysis. Graphene oxide and carbon nanotubes were also synthesized and characterized. PB nanoparticles, carbon nanotubes (CNT), graphene oxide (GO) and cetyltrimethylammonium bromide (CTAB) were sequentially deposited onto glas

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9

AragÃo, Janmille da Silva. "Electrochemical Determination of diethylstilbestrol at glassy carbon electrode modified with gold nanoparticles and a film of multi-wall carbon nanotubes and cobalt phthalocyanine." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16652.

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This paper describes the development of an electrochemical sensor glassy carbon modified with gold nanoparticles and a film of multiâwalled carbon nanotube and cobalt phthalocyanine (CoPc-fMWCNTs/AuNp/GCE) for the determination of diethylstilbestrol hormone (DES) in water samples and meat, using a square wave technique voltammetry. (SWV). The electrolyte used was Britton-Robinson buffer (BR) 0.04 mol L-1 pH 10.0. Initially it was studied the electrode configuration to be used for the development work, after the optimization of solution pH, study scan speed to evaluate the charge transfer kin

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10

Arotiba, Omotayo Ademola. "Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7669_1266190932.

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<p>In this thesis, I present the electrochemical studies of three dendrimeric polypropylene imine (PPI) nanomaterials and their applications as a platform in the development of a novel label free DNA nanobiosensor based on electrochemical impedance spectroscopy. Cyclic voltammetry (CV), differentia pulse voltammetry (DPV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS) techniques were used to study and model the electrochemical reactivities of the nanomaterials on glassy carbon electrode (GCE) as the working electrode.</p>

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11

Naidoo, Fayyaadh. "Graphene modified Salen ligands for the electrochemical determination of heavy metal ions." University of Western Cape, 2020. http://hdl.handle.net/11394/7540.

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>Magister Scientiae - MSc<br>Environmental pollution is a major threat to all life, which needs to be addressed. Heavy metals are well-known environmental pollutants due to their toxicity and, persistence in the environment toxicity for living organisms and having a bioaccumulative nature. Environmentally, the most common hazardous heavy metals are: Cr, Ni, Cu, Zn, Cd, Pb, Hg, and As. Remediation using conventional physical and chemical methods is uneconomical and generates waste chemicals in large quantities. This study focuses on the extraction and determination of heavy metals (Nickel, Co

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12

DuVall, Stacy Hunt. "Electron transfer kinetics of catechols on modified glassy carbon electrodes /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488199501404497.

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13

Maiko, Khumo Gwendoline. "The Isolation and Electrochemical Studies of Flavanoids from Galenia africana and Elytropapus rhinocerotis from the North Western Cape." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5427_1305881229.

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<p>In this study two medicinal plant species, namely Galenia africana and Elytropapus rhinocerotis, the former belonging to the family Aizoceae and the latter belonging to the family Asteraceae, have been investigated and different compounds isolated and characterized. Both species are important plants used in traditional medicine in Africa and particularly in South Africa. Flavanoids are secondary metabolites found in plants. They have a protective function against UV radiation and have a defence against invading illnesses due to their important antioxidant activity. Much of the food we eat a

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14

Ataide, Vanessa Neiva de. "Desenvolvimento de sensores eletroquímicos de carbono visando à detecção de furosemida em amostras farmacêuticas e clínicas." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-20072018-083427/.

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Nos últimos anos, materiais baseados em grafeno têm atraído grande interesse na área eletroquímica devido às suas excelentes propriedades eletrônicas. Neste trabalho, apresentamos a obtenção de óxido de grafeno reduzido utilizando métodos eletroquímicos. A redução eletroquímica do óxido de grafeno (OG) foi realizada na superfície de um eletrodo de carbono vítreo (ECV) utilizando voltametria cíclica. O óxido de grafeno reduzido eletroquimicamente (OG-RE) foi caracterizado utilizando espectroscopia Raman, microscopia eletrônica de varredura (MEV), microscopia de força atômica (MFA), espectroscop

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15

Gomes, Eliziana Santana. "Determina??o voltam?trica de estriol em formula??o farmac?utica e urina utilizando um eletrodo de carbono v?treo modificado com um filme de poli(metionina) e cobalto." UFVJM, 2017. http://acervo.ufvjm.edu.br/jspui/handle/1/1735.

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Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-06-26T00:47:56Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) eliziana_santana_gomes.pdf: 3970415 bytes, checksum: 2481c11516ababe53f6e97ce77e43efc (MD5)<br>Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-07-18T12:49:10Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) eliziana_santana_gomes.pdf: 3970415 bytes, checksum: 2481c11516ababe53f6e97ce77e43efc (MD5)<br>Made available in DSp

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Willemse, Chandre Monique. "Nanocomposite-graphene based platform for heavy metal detection." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8123_1323852117.

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This study reports the synthesis of graphene by oxidizing graphite to graphite oxide using H2SO4 and KMnO4 and reducing graphene oxide to graphene by using NaBH4. Graphene was then characterized using FT-IR, TEM, AFM, XRD, Raman spectroscopy and solid state NMR. Nafion-Graphene in combination with a mercury film electrode, bismuth film electrode and antimony film electrode was used as a sensing platform for trace metal analysis in 0.1 M acetate buffer (pH 4.6) at 120 s deposition time, using square-wave anodic stripping voltammetry (SWASV). Detection limits were calculated using 3Ïblank/slope

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17

Lima, Dhésmon. "ELETRODOS DE PASTA DE CARBONO VÍTREO MODIFICADOS COM NANOPARTÍCULAS DE OURO ESTABILIZADAS EM PORFIRANA: POTENCIAIS APLICAÇÕES PARA A DETECÇÃO DO AGENTE ANTITUMORAL 5-FLUOROURACIL." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2016. http://tede2.uepg.br/jspui/handle/prefix/2043.

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Made available in DSpace on 2017-07-24T19:37:54Z (GMT). No. of bitstreams: 1 Dhesmon Lima.pdf: 3726533 bytes, checksum: d3be37b6257d9747cd2404bc48091086 (MD5) Previous issue date: 2016-02-26<br>In this work, glassy carbon paste electrodes (GCPE) were modified with porphyran- capped gold nanoparticles (GCPE/AuNps-PFR) and applied for the determination of an anticancer drug, 5-fluorouracil (5-FU), by using differential pulse voltammetry (DPV). The PFR polysaccharide was isolated from commercial Nori seaweed, and its characterization was carried out by FTIR and 13C-NMR as well as by determinin

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18

Ana, Đurović. "Razvoj metoda za hronopotenciometrijsko određivanje odabranih pesticida u vodi." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107249&source=NDLTD&language=en.

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U okviru ove doktorske disertacije, razvijene su elektroanalitičke metode za određivanje odabranih pesticida primenom hronopotenciometrije. Ispitana je mogućnost primene elektrode od staklastog ugljenika i tankoslojne živine elektrode kao radnih elektroda za određivanje insekticida imidakloprida i herbicida metamitrona i metribuzina. U cilju optimizacije uslova hronopotenciometrijske tehnike, za svaki ispitivani sistem (pesticid/radna elektroda) ispitan je uticaj najznačajnijih eksperimentalnih parametara na analitički signal pesticida, uključujući mehanizam generisanja analitičkog signala na

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19

Ferraz, Bruno Regis Lyrio. "Desenvolvimento e valida??o de metodologias eletroanal?ticas para determina??o de f?rmacos antituberculose." UFVJM, 2016. http://acervo.ufvjm.edu.br/jspui/handle/1/1012.

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Submitted by M?rden L?les (marden.inacio@ufvjm.edu.br) on 2016-07-14T23:55:27Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Bruno Regis Lyrio Ferraz.PDF: 3015137 bytes, checksum: d479e9335e2f200939b52075f9b84382 (MD5)<br>Rejected by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br), reason: Inserir ano em nota de tese. Inserir t?tulo em ingl?s Inserir tipo de trabalho on 2016-07-18T15:05:26Z (GMT)<br>Submitted by M?rden L?les (marden.inacio@ufvjm.edu.br) on 2016-07-19T20:24:24Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98

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Matinise, Nolubabalo. "Electrolytic determination of phthalates organic pollutants with n nostructured titanium and iron oxides sensors." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1177_1305892404.

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<p>This work reports the chemical synthesis, characterisation and electrochemical application of titanium dioxide (TiO2) and iron oxide (Fe2O3) nanoparticles in the determination of phthalates. The other part of this work involved electrochemical polymerization of aniline doped with titanium and iron oxide nanoparticles for the sensor platform in the electrolytic determination of phthalates. The TiO2 and Fe2O3 nanoparticles were prepared by sol gel and hydrothermal methods respectively. Particle sizes of 20 nm (TiO2) and 50 nm (Fe2O3) were estimated from transmission electron microscopy (TEM)

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21

Ngqongwa, Lundi Vincent. "Electrochemical characterization of nanostructured SnO2 and TiO2 for potential application as dielectric materials in sulfonated-polyaniline based supercapacitors." Thesis, University of the Western Cape, 2010. http://hdl.handle.net/11394/2575.

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Magister Scientiae - MSc<br>In this research project, nanostructured composites based on Tin dioxide (SnO2) and Titanium dioxide (TiO2) with poly-4-styrene sulfonic acid (PSSA) doped polyaniline (PANI) conducting polymer has been investigated based on their structural, electrical and electrochemical properties. The synthesis of conducting polymers and their metal oxide or composites have been carried out chemically or electrochemically according to methods modified from the literature. Layer-by-layer construction of nano-Metal Oxide/PSSA doped polyaniline composites were successfully construct

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22

Jaroslava, Švarc-Gajić. "Hronopotenciometrijska striping analiza žive na staklastom ugljeniku." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2006. https://www.cris.uns.ac.rs/record.jsf?recordId=71249&source=NDLTD&language=en.

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U radu su definisani najznačajniji ekspirementalni faktori hronopotenciometrijske striping analize žive na staklastom ugljeniku. Poređeni su različiti elektrohemijski sistemi. Ispitani sistemi su obuhvatili klasičnu elektrohemijsku ćeliju sa stacionarnom disk elektrodom, sistem sa rotirajućom disk elektrodom, procesnu posudu od staklastog ugljenika kao radnuelektrodu i protočne sisteme uz tankoslojnu i tubularnu ćeliju.Tačnost definisanih metoda je potvrđena analizom standardnog referentnog materijala - lista paradajza. Najveća osetljivost određivanja žive je postignuta primenom procesne ča&sc

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23

Hu, Ing-Feng. "Activation and deactivation of glassy carbon electrodes /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu148726339902366.

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24

Matyholo, Virginia Busiswa. "Polymeric tyrosinase nanobiosensor system for the determination of endocrine disrupting bisphenol A." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9288_1319782994.

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The main objective of this work was to develop simple and sensitive electrochemical sensors for the detection of bisphenol A. To investigate the electrochemical behavior of BPA on a bare glassy carbon electrode. To apply the developed biosensor for the determination BPA by differential pulse voltammetry, electrochemical impedance spectrometry, square wave voltammetry and steady-state amperometry. To characterize the synthesized PDMA-PSS by cyclic voltammetry (CV), UV-Vis spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM).

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25

Gelis, Laurence. "Reactivite electrochimique des halogenures de trifluoromethyle." Paris 7, 1988. http://www.theses.fr/1988PA077064.

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Etude par voltammetrie lineaire et par coulometrie, du mecanisme d'oxydoreduction des halogenures de trifluoromethyl sur une electrode de carbone dans le dmf. La deuxieme partie decrit les essais de trifluoromethylation de differents substrats organiques (aldehyde, styrene)

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26

McDermott, Christie Allred. "Morphology and electrochemical reactivity of glassy carbon electrodes /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780393268822.

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27

Hance, Glen W. "The chemical and electrochemical investigation of the glassy carbon surface /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487324944215524.

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28

Pontikos, Nicholas Michael. "Laser induced microstructural and morphological alterations and their effects on electron transfer kinetics at glassy carbon electrodes /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780865407154.

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29

Finot, Michael. "Deposition and modification of gold nanocrystals on glassy carbon electrodes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0010/NQ59961.pdf.

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30

Ngema, Xolani Terrance. "Metallic nanoparticles with polymeric shell: A multifunctional platform for application to biosensor." University of the Western Cape, 2018. http://hdl.handle.net/11394/6330.

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Philosophiae Doctor - PhD (Chemistry)<br>Tuberculosis (TB) is an airborne disease caused by Mycobacterium tuberculosis (MTB) that usually affects the lungs leading to severe coughing, fever and chest pains. It was estimated that over 9.6 million people worldwide developed TB and 1.5 million died from the infectious disease of which 12 % were co-infected with human immunodeficiency virus (HIV) in the year 2015. In 2016 the statistics increased to a total of 1.7 million people reportedly died from TB with an estimated 10.4 million new cases of TB diagnosed worldwide. The development of the effic

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Calaça, Giselle Nathaly. "DESENVOLVIMENTO DE MÉTODOS VOLTAMÉTRICOS UTILIZANDO PLANEJAMENTO FATORIAL PARA DETERMINAÇÕES SIMULTÂNEAS DE ASSOCIAÇÕES FARMACÊUTICAS E COSMÉTICAS." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2015. http://tede2.uepg.br/jspui/handle/prefix/4.

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Made available in DSpace on 2017-07-20T12:40:14Z (GMT). No. of bitstreams: 1 Giselle Nathaly Calaca.pdf: 4129912 bytes, checksum: 17ad0dde0faa7762fe24c34e6ffcd471 (MD5) Previous issue date: 2015-03-23<br>Fundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Paraná<br>The development and validation of analytical methods for quantification of two associations, antibiotics: sulfamethoxazole (SMX) and trimethoprim (TMP); and depigmenting agents: kojic acid (AK) and hydroquinone (HQ), using unmodified glassy carbon electrode (ECV) and square wave voltammetry (SWV) are describ

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Lee, Lita. "Modification of Glassy Carbon Electrodes with Diazonium Cation Terminated Films: "Sticky Surfaces"." Thesis, University of Canterbury. Chemistry, 2011. http://hdl.handle.net/10092/6202.

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This thesis described the modification of glassy carbon (GC) electrodes with aminophenyl (AP) films via in situ reduction of aminobenzene diazonium ions. The characterisation of the AP modified GC was conducted electrochemically by oxidation of the AP functionalities in acidic aqueous conditions. Ferricyanide and ruthenium hexamine redox probes were also used to investigate the blocking properties of the AP films. Before electrochemical oxidation of the AP functionalities, AP films were shown to have a nett positive charge at pH 7. After electrochemical oxidation in protic conditions, the film

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Селянина, Т. В., та T. V. Selyanina. "Количественное определение натриевой соли 2-этилтио-6-нитро-1,2,4-триазоло-[5,1-c]-1,2,4-триазин-7-она дигидрата методом вольтамперометрии : магистерская диссертация". Master's thesis, б. и, 2020. http://hdl.handle.net/10995/94625.

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Объектом исследования являлось вещество натриевая соль 2-этилтио-6-нитро-1,2,4-триазоло-[5,1-c]-1,2,4-триазин-7-она, дигидрат (УПИ-802). Цель работы: количественное определение лекарственного вещества натриевой соли 2-этилтио-6-нитро-1,2,4-триазоло-[5,1-c]-1,2,4-триазин-7-она дигидрата методом вольтамперометрии. В случае УПИ-802 наиболее полезным для количественного определения является сигнал электровосстановления нитрогруппы. Исследованы процессы восстановления нитрогруппы исследуемого вещества в водных и апротонных растворах с применением вольтамперометрии в условиях физического удаления ра

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Schueller, Olivier Jean Arthur. "Preparation and characterization of doped glassy carbon materials : application to fuel cell electrodes /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487864986608978.

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Kuhnke, Markus. "Fabrication and characterization of micro-structured glassy carbon electrodes for miniaturized fuel cells." kostenfrei, 2007. http://e-collection.ethbib.ethz.ch/view/eth:30249.

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Braun, Artur [Verfasser]. "Development and Characterization of Glassy Carbon Electrodes for a Bipolar Electrochemical Double Layer Capacitor / Artur Braun." Hamburg : Diplom.de, 2002. http://d-nb.info/1117595579/34.

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Miller, Charles William. "Surface characterization of inductively coupled radio frequency plasma treated glassy carbons by x-ray photoelectron spectroscopy and scanning electron microscopy /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266362335601.

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Olga, Vajdle. "Voltametrijske metode na bazi jednostavnih i savremenih elektroda/senzora za određivanje odabranih analita od farmakološkog značaja." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104941&source=NDLTD&language=en.

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Danas, u raznim analitičkim laboratorijama postoji veći broj analitičkih protokola,zasnovanih bilo na izuzetno sofisticiranim ili jednostavnijim tehnikama, koji služe zaodređivanje različitih ciljnih analita od farmakolo&scaron;kog značaja. Među tim grupama ciljnih analita pripadaju i antibiotici koji predstavljaju veliko otkriće u oblasti medicine i zahvaljujući njima spa&scaron;eno je vi&scaron;e od sedam miliona života, ali pored navedenih koristi, antibiotici mogu da izazovu  veliki broj neželjenih efekata i žučne kiseline zajedno sa svojim derivatima, koji su fiziolo&scaron;ki deterd

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Yang, Hsueh-Hui. "The effects of Modified Glassy Carbon Surfaces on electron transfer kinetics of organic redox systems /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488194825668588.

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Zhang, Yan. "SURFACE AND STRUCTURAL MODIFICATION OF CARBON ELECTRODES FOR ELECTROANALYSIS AND ELECTROCHEMICAL CONVERSION." UKnowledge, 2018. https://uknowledge.uky.edu/chemistry_etds/96.

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Electrocatalysis is key to both sensitive electrochemical sensing and efficient electrochemical energy conversion. Despite high catalytic activity, traditional metal catalysts have poor stability, low selectivity, and high cost. Metal-free, carbon-based materials are emerging as alternatives to metal-based catalysts because of their attractive features including natural abundance, environmental friendliness, high electrical conductivity, and large surface area. Altering surface functionalities and heteroatom doping are effective ways to promote catalytic performance of carbon-based catalysts.

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Nasir, Tauqir. "Electrochemical sensors of environmental pollutants based on carbon electrodes modified by ordered mesoporous silica." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0089/document.

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Dans cette thèse, nous présentons la détection électrochimique des herbicides, c'est-à-dire le paraquat et l'isoproturon dans des échantillons aqueux. Leur utilisation intensive est une source de contamination de l'environnement et leur toxicité constitue une menace pour la santé. La détection électrochimique est une technique prometteuse et avantageuse par rapport aux méthodes de détection conventionnelles en raison de ses propriétés telles que l'analyse rapide, la facilité d'utilisation, la rentabilité et la sensibilité élevée résultant de la modification de l'électrode de travail. Ici, nous

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Cavalcante, Glene Henrique Rodrigues. "VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO ELETROANALÍTICA DE EUGENOL EM ÓLEO ESSENCIAL DA ESPÉCIE Cinnamomum zeylamicum (CANELA)." Universidade Federal do Maranhão, 2008. http://tedebc.ufma.br:8080/jspui/handle/tede/892.

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Made available in DSpace on 2016-08-19T12:56:31Z (GMT). No. of bitstreams: 1 Glene Henrique Rodrigues Cavacalte.pdf: 1209542 bytes, checksum: 36cc863cc05d8037efc2752ed3e32121 (MD5) Previous issue date: 2008-02-22<br>FUNDAÇÃO SOUSÂNDRADE DE APOIO AO DESENVOLVIMENTO DA UFMA<br>This work reports the optimization and validation of an eletro-analytical method for to determine eugenol in essential oil, it obtained of the green leaves of Cinnamomum zeylamicum (cinnamon), with application tested in other essential oils of scientific interest, such as the Origanum (oregano) and Dioic Pepper L (dioi

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Hussain, Riaz. "Preparation and characterization of aryldiazonium electroreduction-derived and metallophthalocyanine-modified carbon surfaces : application to nitrate electrochemical reduction in acidic aqueous media." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST1139.

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Ce travail de thèse concerne la préparation et caractérisation des électrodes de carbone vitreuses (GC) modifiées par les films de groupements aryl (substitués) ou par phtalocyanines des métaux (MPc) et l'évaluation de leurs activités catalytiques envers la réduction électrochimique des nitrates dans les milieux aqueux acides. Les techniques adoptées pour la modification de surface du substrat (le GC) consistent à la réduction électrochimique des sels de diazonium ou à l'abrasion physique de la surface contre la poudre des MPc. En faisant intervenir un mécanisme complexe, y compris les phénomè

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Black, Victoria J. "High temperature supercapacitors." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12490.

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The scientific objective of this research program was to determine the feasibility of manufacturing an ionic liquid-based supercapacitor that could operate at temperatures up to 220 °C. A secondary objective was to determine the compatibility of ionic liquids with other cell components (e.g. current collectors) at high temperature and, if required, consider means of mitigating any problems. The industrial motivation for the present work was to develop a supercapacitor capable of working in the harsh environment of deep offshore boreholes. If successful, this technology would allow down-hole te

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Hsieh, Hsiao-Chieh, and 謝曉婕. "Determination of Chromium by Voltammetry Using Gold Nanoparticles/Single Walled Carbon Nanotubes Modified Glassy Carbon Electrode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/hge43r.

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碩士<br>國立中央大學<br>環境工程研究所<br>105<br>Chromium is considered to be highly toxic, especially hexavalent chromium(Cr(VI)). Fast and accurate detection of chromium ions has become a critical issue. In this study, the gold nanoparticles/single-walled carbon nanotubes modified glassy carbon electrode (Au/SWCNT/GCE) was fabricated for chromium detection through voltammetry. The gold nanoparticles were deposited single-walled carbon nanotube film via electroplating. The deposition time and precursor concentration were optimized. The scanning conditions, such as supporting electrolyte, pH, and scanning ve

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Lin, Chen-Chun, and 林蓁君. "Detection of Arsenic(III) by Gold-Manganese Oxides/Single Walled Carbon Nanotubes Modified Glassy Carbon Electrode." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/796fzq.

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碩士<br>國立中央大學<br>環境工程研究所<br>106<br>Arsenic is highly toxic and ingestion by humans may increase the risk of cancer. Traditional water quality analysis require pretreatment and time so it cannot give the results promptly. Therefore, In-situ monitoring is needed to effectively control the water treatment processes. However, the voltammetric method can quickly obtain the change of water quality. In this research, composite modified electrodes were prepared and voltammetric analysis was used to obtain a better detection of arsenic sensitivity and low interference. Au-MnOx/SWCNT modified electrode f

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Wu, Chun-Hua, and 吳峻華. "Determination of Copper by Voltammetry Using Gold Nanoparticles/Chitosan-Single-Walled Carbon Nanotubes Modified Glassy Carbon Electrode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/nm684e.

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碩士<br>國立中央大學<br>環境工程研究所<br>106<br>Heavy metal pollution in aquatic environment has drawn great attention for years. Though copper (Cu) is a trace element, also has toxic effects on human health and environment. Therefore, developing a fast and accurate sensor for Cu analysis is important. In this study, the gold nanoparticles/chitosan-single walled nanotubes modified glassy carbon electrode (Au/chitosan-SWCNT/GCE) was prepared for detection of Cu(II). The liner-sweep voltammetry method (LSV) was used to analyze Cu(II) and the gold nanoparticles were deposited on the single-walled nanotube thro

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LIU, SHANG-LUN, and 柳尚倫. "Synthesis of Modified Glassy Carbon Electrode for Electrochemical Detection of Heavy Metals in Water." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/d37j6x.

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碩士<br>逢甲大學<br>環境工程與科學學系<br>107<br>Heavy metal ions, such as cobalt, copper, iron, manganese, and zinc, play an important role in living organisms as being essential elements in small amounts for the metabolism maintenance. However, excessive levels or even small doses of very toxic metals (i.e. lead, cadmium, mercury, arsenic, stibium etc.) can cause serious problems on the environment and human health. Accumulation of such metals on the human body can cause severe diseases in our central nervous system, liver and kidneys, or skin, bones, and teeth. In order to be able to detect heavy metals m

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KUO, JIN-PING, and 郭進平. "Studies on the Electrochemical Behaviors of Caffeic Acid with Carbon Black/Carbon Quantum Dot/Metal Organic Frameworks Modified Glassy Carbon Electrode." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8u857b.

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碩士<br>輔仁大學<br>化學系<br>107<br>In this study, using nano carbon black/carbon quantum dot (CQD)/metal-organic frameworks (MOFs) modified electrode detecting caffeic acid, and investigating the electrochemical properties of the modified electrode. The metal organic frameworks have been successfully scrutinized by using Fourier transform infrared spectroscopy (FT-IR) and powder X-ray diffraction (PXRD), transmission electron microscopy (TEM) and fluorescence spectrometer successful identify the CQD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) confirmed that carbon bla

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Jhuang, Huei-ting, and 莊惠婷. "Determination of mercury(Ⅱ) using gold nanoparticles/ multi-walled carbon nanotubes composite modified glassy carbon electrode via cyclic voltammetry." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46386123964659402106.

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碩士<br>國立中央大學<br>環境工程研究所<br>103<br>The objective of this work was to prepare gold nanoparticles (GNP)/ multi-walled carbon nanotubes (MWCNTs) composite to modified glassy carbon electrode (GCE), which was used to analyze Hg (Ⅱ) by cyclic voltammetry (CV). It was found that modification via GNP/MWCNTs composite increased the active area. In order to investigate the influences of speciation on the reduction peak currents, CV was conducted at different solution pH and with addition of NaCl. When the solution pH was adjusted, the shift of the reduction peak of Hg was measured by all three modified

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