Rey Marc T. Cumba

ORCID: 0009-0006-8561-9663
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About
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Research Areas
  • Nanoparticles: synthesis and applications
  • Environmental and Social Impact Assessments
  • Mining and Resource Management
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Corrosion Behavior and Inhibition
  • Essential Oils and Antimicrobial Activity
  • Bee Products Chemical Analysis
  • Advanced Photocatalysis Techniques
  • Gas Sensing Nanomaterials and Sensors
  • Dye analysis and toxicity
  • Psidium guajava Extracts and Applications
  • Advanced Cellulose Research Studies
  • Polymer composites and self-healing
  • Healthcare and Environmental Waste Management

Caraga State University
2022-2025

Mindanao State University – Iligan Institute of Technology
2019

This study examines the perceived health impacts of a mining company on residents Libjo, Dinagat Islands, Philippines, addressing critical research gap in understanding activities underrepresented regions. The operations were examined using qualitative approach, employing semi-structured interviews. interview instrument was developed to investigate how impact key determinants, such as water quality, sanitation, income, employment, infrastructure, education, and women’s empowerment. conducted...

10.3390/ijerph22030365 article EN International Journal of Environmental Research and Public Health 2025-03-02

Mild steels were the most frequently used materials in industries and factories since it possesses unique properties but due to weak environmental changes, these cause deterioration corrosion materials’ surface. To prevent such, protective coatings applied protect against which by incorporating titanium nanoparticles polyurethane coatings. Titanium synthesized using butoxide as a precursor. The obtained an inhibitor mixed with coconut oil-based polyol blend on mild steel of 3.5% sodium...

10.4028/p-57v3st article EN Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena 2024-06-11

Organic dyes used in the food and textile industries are primary sources of environmental contamination due to their high toxicity nonbiodegradability. This paper describes synthesis cellulose nanocrystals/zinc oxide (CNC/ZnO) nanocomposite via sol-gel method. Various characterization techniques such as FTIR spectroscopy, UV-Vis FESEM-EDX analysis were done. analyses initially confirmed formation CNC/ZnO nanocomposites. showed a fiber-like structure with agglomerated particles on CNC-ZnO...

10.22146/ajche.72331 article EN ASEAN Journal of Chemical Engineering 2022-06-30

Abstract We report on the synthesis of Fe 3 O 4 /TiO 2 /BiOCl nanocomposites using Sargassum crassifolium extract as magnetic nanophotocatalyst for cadmium sequestration. Utilization nanotechnology via surface engineering and functionalization has been considered heavy metals In this work, we are going to synthesize green metal sequestration wastewater. Synthesis includes fabrication functionalized nanoparticles followed by TiO finally capped with BiOCl complete nanocomposites. Experimental...

10.1088/1757-899x/668/1/012029 article EN IOP Conference Series Materials Science and Engineering 2019-11-01

Silver nanoparticles have been well known to possess efficient antibacterial properties. Many studies conducted on silver synthesized in different routes, from physical methods chemical techniques biological synthesis. In this study, the route was utilized using Psidium guajava leaves extract mixed with nitrate synthesize nanoparticles. addition, syntheses were done at varying temperatures investigate its effect over properties of obtained. Results showed blueshifting UV-Vis peaks suggesting...

10.4028/p-d7enun article EN Journal of biomimetics, biomaterials and biomedical engineering 2022-08-19

Silver nanoparticles were synthesized using locally purchased honey and silver nitrate solution. This method provides a simplistic straightforward approach to the formation of nanoparticles. The with varying amounts solution characterized ultraviolet-visible spectroscopy Fourier transform infrared spectroscopy. In addition, dynamic light scattering characterization was used determine average size distribution Experimental results revealed that amount can control absorption spectra A large...

10.4028/p-83kcwf article EN Journal of biomimetics, biomaterials and biomedical engineering 2022-08-19
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