Dragoș Cosma

ORCID: 0000-0001-9276-1314
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About
Contact & Profiles
Research Areas
  • Advanced Photocatalysis Techniques
  • TiO2 Photocatalysis and Solar Cells
  • Nanomaterials for catalytic reactions
  • Adsorption and biosorption for pollutant removal
  • Pesticide Residue Analysis and Safety
  • Polymer-Based Agricultural Enhancements
  • Greenhouse Technology and Climate Control
  • Advanced Nanomaterials in Catalysis
  • Pesticide and Herbicide Environmental Studies
  • Pesticide Exposure and Toxicity
  • Transition Metal Oxide Nanomaterials
  • Copper-based nanomaterials and applications
  • Nonlinear Dynamics and Pattern Formation
  • Gas Sensing Nanomaterials and Sensors

National Institute for Research and Development of Isotopic and Molecular Technologies
2021-2023

University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca
2016

Ministerul Cercetării și Inovării
2009

Ministry of Education
2009

Easy and cost-efficient modifications of titanium dioxide nanoparticles that improve their efficiency in the visible light domain represent a continuous challenging research topic. In addition, effect graphene on overall photocatalytic process is still debated. Consequently, herein, we prepared series TiO2 nanoparticle-based composites with different copper oxide mass content (1-3%) co-doped oxidation degrees. Different characterization techniques were used to analyze structural...

10.3390/molecules27185803 article EN cc-by Molecules 2022-09-07

Abstract We synthesized a new nanocomposite bearing nitrogen-doped graphene as carbon additive to the nickel oxide nanoparticles-titanium dioxide nanotubes heterojunction. The main purpose was comparison of its structural and electronic properties, hence potential applications, with undoped, reduced homolog. beneficial effect on TiO2 heterojunctions is an accepted fact in materials science field, mainly favor one. Our data show that both graphenes have little influence band offset values...

10.1088/1361-6463/ad7d9a article EN cc-by Journal of Physics D Applied Physics 2024-09-20

A novel nanoporous adsorbent was obtained through the thermal treatment and chemical wash of wasted crab shells (BC1) characterized by various techniques. The structure BC1 at end treatments comprised a mixture calcite amorphous CaCO3, as evidenced X-ray diffraction Fourier transform infrared absorption. BET surface area, pore volume, diameter were 250.33 m2 g−1, 0.4 cm3 <70 nm, respectively. point zero charge determined to be around pH 9. prepared tested for its adsorption efficacy...

10.3390/nano13233042 article EN cc-by Nanomaterials 2023-11-28

This paper presents an identification method of the value concentration in certain areas rooms for edible mushroom culture medium, case where introducing air represents effect superposition a flow convection (natural or artificial) and diffusion its recirculation, which acts as feedback circuit. The result helps to understand how conduct recirculation phenomenon, may constitute basis future adaptive adjustment value.

10.1109/isciii.2009.5342273 article EN 2009-10-01

Chlorpyrifos (Reldan 22) is an widely used insecticide for the control of insect pests in agricultureand residential areas. It classified as moderately toxic by United States Environmental Protection Agency and has been quantified human biological fluids. Given that use porcine bovine models testing chemicals increased recently we designed experiment to test toxicity several concentrations investigate its effects on maturation swine oocytes. Swine oocytes from ovaries harvested a commercial...

10.15835/buasvmcn-asb:12195 article EN cc-by-nc-nd Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Animal Science and Biotechnologies 2016-11-28
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