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1. Synthesis, characterization and catalytic performance of nanostructured dysprosium molybdate catalyst for selective biomolecule detection in biological and pharmaceutical samples

Author:
Karthik, Raj,   et al.   ; Mutharani, Bhuvanenthiran; Chen, Shen-Ming; Vinoth Kumar, Jeyaraj; Abinaya, Manickavasagan; Chen, Tse-Wei; Lei, Wu; Hao, Qingli;     Show all 8 Authors
Source:
Journal of materials chemistry B 2019 v.7 no.33 pp. 5065-5077
ISSN:
2050-7518
Subject:
Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; antibiotics; catalysts; catalytic activity; detection limit; drugs; dysprosium; electrochemistry; energy-dispersive X-ray analysis; glassy carbon electrode; humans; metronidazole; molybdates; nanocomposites; nanomaterials; pH; scanning electron microscopy; transmission electron microscopy; urine
Abstract:
... The current study reports a new, simple and fast method using a flake-like dysprosium molybdate (Dy₂MoO₆; FL-DyM) nanostructured material to detect the antibiotic drug metronidazole (METZ). This nanocomposite material was employed on the surface of a glassy carbon electrode (GCE) to develop the electrode (FL-DyM/GCE). Further, the synthesized FL-DyM was systematically characterized by powder X-ray ...
DOI:
10.1039/c9tb01020c

2. Rapid synthesis of ethyl cellulose supported platinum nanoparticles for the non-enzymatic determination of H2O2

Author:
Karthik, Raj,   et al.   ; Karikalan, Natarajan; Chen, Shen-Ming;     Show all 3 Authors
Source:
Carbohydrate polymers 2017 v.164 pp. 102-108
ISSN:
0144-8617
Subject:
blood serum; cellulose; detection limit; energy-dispersive X-ray analysis; glassy carbon electrode; humans; hydrogen peroxide; nanoparticles; platinum; polymers; scanning electron microscopes
Abstract:
... Cellulose derivatives are one of the carbohydrate polymers which received a great interest in the construction of nanostructured materials. Particularly, the ethyl cellulose provides an enormous support to the metal nanoparticles. To the best of our knowledge, this is the first time report for the simple and rapid synthesis of ethyl cellulose (EC) supported platinum nanoparticles (PtNPs) for the d ...
DOI:
10.1016/j.carbpol.2017.01.077

3. Synergistic activity of single crystalline bismuth sulfide and sulfur doped graphene towards the electrocatalysis of tryptophan

Author:
Karthik, Raj,   et al.   ; Kubendhiran, Subbiramaniyan; Karikalan, Natarajan; Chen, Shen-Ming; Sundaresan, Periyasamy;     Show all 5 Authors
Source:
Journal of catalysis 2018 v.367 pp. 252-263
ISSN:
0021-9517
Subject:
bismuth; blood; carbon electrodes; electrochemistry; graphene; human nutrition; humans; monitoring; nanocomposites; sulfur; synergism; tryptophan
Abstract:
... In the present study, a single step and template free synthesis was proposed for the preparation of heterostructured single crystalline rod like bismuth sulfide/sulfur doped graphene (SGr-Bi2S3) nanocomposite. The structural properties and physical interactions of SGr-Bi2S3 were investigated by various physicochemical techniques which provide the knowledge about growth mechanism and orientation of ...
DOI:
10.1016/j.jcat.2018.09.013

4. Design of Novel Ytterbium Molybdate Nanoflakes Anchored Carbon Nanofibers: Challenging Sustainable Catalyst for the Detection and Degradation of Assassination Weapon (Paraoxon-Ethyl)

Author:
Karthik, Raj,   et al.   ; Kumar, Jeyaraj Vinoth; Chen, Shen-Ming; Kokulnathan, Thangavelu; Yang, Han-Yu; Muthuraj, Velluchamy;     Show all 6 Authors
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.7 pp. 8615-8630
ISSN:
2168-0485
Subject:
carbon nanofibers; detection limit; electrochemistry; electrodes; irradiation; mineralization; molybdates; nanocomposites; photocatalysis; photocatalysts; physicochemical properties; pollutants; remediation; researchers; soil; sonication; spectroscopy; toxicity; ytterbium
Abstract:
... Design of resourceful and sustainable catalyst for the trace level identification as well as detoxification of toxic pollutants into the environment is a major concern to researchers. In view of that, we developed novel flakelike ytterbium molybdate (YbMoO₄; YbM) anchored on carbon nanofibers (YbM/f-CNFs) nanocomposite via simple wet-chemical route followed by a sonication process. The physicochem ...
DOI:
10.1021/acssuschemeng.8b00936

5. A mobile phone-based approach to detection of hemolysis

Author:
Konnaiyan, Karthik Raj,   et al.   ; Archibong, Edikan; Kaplan, Howard; Pyayt, Anna;     Show all 4 Authors
Source:
Biosensors & bioelectronics 2017 v.88 pp. 204-209
ISSN:
0956-5663
Subject:
analytical methods; biomarkers; biosensors; blood plasma; blood platelet count; cameras; color; computer software; enzymes; erythrocytes; hemoglobin; hemolysis; liver; morbidity; mortality; patients; pre-eclampsia
Abstract:
... Preeclampsia and HELLP (hemolysis, elevated liver enzymes, and low platelet count) syndrome are pregnancy-related complications with high rates of morbidity and mortality. HELLP syndrome, in particular, can be difficult to diagnose. Recent work suggests that elevated levels of free cell hemoglobin in blood plasma can, as early as the first trimester, potentially serve as a diagnostic biomarker for ...
DOI:
10.1016/j.bios.2016.08.030

6. 3D Flower-Like Gadolinium Molybdate Catalyst for Efficient Detection and Degradation of Organophosphate Pesticide (Fenitrothion)

Author:
Karthik, Raj,   et al.   ; Vinoth Kumar, Jeyaraj; Chen, Shen-Ming; Natarajan, Karikalan; Karuppiah, Chelladurai; Yang, Chun-Chen; Muthuraj, Velluchamy;     Show all 7 Authors
Source:
ACS applied materials & interfaces 2018 v.10 no.18 pp. 15652-15664
ISSN:
1944-8252
Subject:
electrochemistry; energy; ethylene glycol; fenitrothion; gadolinium; irradiation; molybdates; nanomaterials; photocatalysis; photocatalysts; remediation; soil; spectroscopy; ultraviolet radiation; urea
Abstract:
... Three-dimensional (3D) nanostructured materials have received enormous attention in energy and environment remediation applications. Herein, we developed a novel 3D flower-like gadolinium molybdate (Gd₂MoO₆; GdM) and used as a bifunctional catalyst for the electrochemical detection and photocatalytic degradation of organophosphate pesticide fenitrothion (FNT). The flower-like GdM catalyst was prep ...
DOI:
10.1021/acsami.8b00625

7. Electrocatalytic reduction of nitroaromatic compounds by activated graphite sheets in the presence of atmospheric oxygen molecules

Author:
Karthik, Raj,   et al.   ; Karikalan, Natarajan; Kubendhiran, Subbiramaniyan; Chen, Shen-Ming; Sundaresan, Periyasamy;     Show all 5 Authors
Source:
Journal of catalysis 2017 v.356 pp. 43-52
ISSN:
0021-9517
Subject:
aniline; antineoplastic agents; climate; electrochemistry; electrodes; graphene; models; nitroaromatic compounds; nitrobenzenes; oxygen; p-nitrophenol; parathion-methyl; remediation
Abstract:
... The anthropogenic climate and environmental issues incite the remediation of nitroaromatic compounds (NACs). Therefore, most of the researches have been devoted to the electrocatalytic reduction of NACs. Mainly, the carbonaceous materials have been employed asan electrode material for the determination of NACs. However, the effect of oxygen reduction is necessary to address with the electrocatalyt ...
DOI:
10.1016/j.jcat.2017.09.012

8. Assessment of divergent functional properties of seed-like strontium molybdate for the photocatalysis and electrocatalysis of the postharvest scald inhibitor diphenylamine

Author:
Karthik, Raj,   et al.   ; Karikalan, Natarajan; Chen, Shen-Ming; Vinoth Kumar, Jeyaraj; Karuppiah, Chelladurai; Muthuraj, Velluchamy;     Show all 6 Authors
Source:
Journal of catalysis 2017 v.352 pp. 606-616
ISSN:
0021-9517
Subject:
absorption; anions; catalysts; cations; diphenylamine; electrochemistry; free radicals; functional properties; hydroxyl radicals; irradiation; molybdates; pH; photocatalysis; photolysis; photons; strontium; ultraviolet-visible spectroscopy
Abstract:
... The bifunctional activity of strontium molybdate (SrMoO4) in the photodegradation and electrocatalytic determination of diphenylamine (DPAH) was identified and demonstrated. The photocatalytic and electrocatalytic activity of SrMoO4 were influenced by its structural properties. Those structural properties are scrutinized by various physical spectroscopic and microscopic tools. In this work, we mai ...
DOI:
10.1016/j.jcat.2017.06.001

9. A Study of Electrocatalytic and Photocatalytic Activity of Cerium Molybdate Nanocubes Decorated Graphene Oxide for the Sensing and Degradation of Antibiotic Drug Chloramphenicol

Author:
Karthik, Raj,   et al.   ; Vinoth Kumar, Jeyaraj; Chen, Shen-Ming; Karuppiah, Chelladurai; Cheng, Yi-Hui; Muthuraj, Velluchamy;     Show all 6 Authors
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.7 pp. 6547-6559
ISSN:
1944-8252
Subject:
catalysts; cerium; chloramphenicol; detection limit; drugs; electrochemistry; electrons; glassy carbon electrode; graphene oxide; honey; hot water treatment; irradiation; milk; molybdates; photocatalysis; photolysis; ultraviolet-visible spectroscopy
Abstract:
... In this present work, “killing two birds with one stone” strategy was performed for the electrochemical trace level detection and photocatalytic degradation of antibiotic drug chloramphenicol (CAP) using Ce(MoO₄)₂ nanocubes/graphene oxide (CeM/GO) composite for the first time. The CeM/GO composite was synthesized via simple hydrothermal treatment followed by sonication process. The successful form ...
DOI:
10.1021/acsami.6b14242

10. Investigation on the Electrocatalytic Determination and Photocatalytic Degradation of Neurotoxicity Drug Clioquinol by Sn(MoO4)2 Nanoplates

Author:
Karthik, Raj,   et al.   ; Vinoth Kumar, Jeyaraj; Chen, Shen-Ming; Seerangan, Kumar; Karuppiah, Chelladurai; Chen, Tse-Wei; Muthuraj, Velluchamy;     Show all 7 Authors
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.31 pp. 26582-26592
ISSN:
1944-8252
Subject:
aquatic animals; detection limit; drugs; electrochemistry; humans; irradiation; metabolism; molybdates; neurotoxicity; photocatalysis; photocatalysts; photolysis; physicochemical properties; sensors (equipment); tin; ultraviolet-visible spectroscopy
Abstract:
... Transition-metal molybdates have concerned enormous curiosity as supercapacitors, photocatalysts, and electrocatalysts. These materials are the best alternatives to noble-metal-based catalysts, which are generally show a limited photocatalytic and electrocatalytic activity. In addition, the antiprotozoal drug can usually pollute the environment through improper disposable and incomplete metabolism ...
DOI:
10.1021/acsami.7b06851

11. Electrochemical properties of the acetaminophen on the screen printed carbon electrode towards the high performance practical sensor applications

Author:
Karthik, Raj,   et al.   ; Karikalan, Natarajan; Chen, Shen-Ming; Velmurugan, Murugan; Karuppiah, Chelladurai;     Show all 5 Authors
Source:
Journal of colloid and interface science 2016 v.483 pp. 109-117
ISSN:
0021-9797
Subject:
Raman spectroscopy; acetaminophen; aspirin; carbon electrodes; detection limit; dimerization; drug formulations; electrochemistry; hydroxylation; kidneys; nonsteroidal anti-inflammatory agents; oxidation; pH; scanning electron microscopes; scanning electron microscopy; toxicity
Abstract:
... Acetaminophen is a non-steroidal anti-inflammatory drug used as an antipyretic agent for the alternative to aspirin. Conversely, the overdoses of acetaminophen can cause hepatic toxicity and kidney damage. Hence, the determination of acetaminophen receives much more attention in biological samples and also in pharmaceutical formulations. Here, we report a rapid and sensitive detection of the aceta ...
DOI:
10.1016/j.jcis.2016.08.028