Topics

Synthesis, characterization and evaluation of visible light active cadmium sulfide-graphitic carbon nitride nanocomposite: A prospective solar light harvesting photo-catalyst for the deactivation of waterborne pathogen.

07:00 EST 8th January 2020 | BioPortfolio

Summary of "Synthesis, characterization and evaluation of visible light active cadmium sulfide-graphitic carbon nitride nanocomposite: A prospective solar light harvesting photo-catalyst for the deactivation of waterborne pathogen."

Cadmium sulfide-graphitic carbon nitride nanocomposite was synthesized by pulsed laser ablation in liquid, and it was found from the results of optical and morphological characterizations that the proper anchoring of nanostructured cadmium sulfide on the nano-sheets of graphitic carbon nitride took place, which brought about the positive attributes such as enhanced visible light absorption and reduced photo-generated charge recombination, the key features required for an efficient photo-catalyst by solar light harvesting. The pulsed laser ablation in liquid method adopted for the synthesis of cadmium sulfide-graphitic carbon nitride has the following advantages: the shape and size of the synthesized particles can be controlled by altering the experimental parameters such as laser wavelength, pulse laser duration, the pH of the solution, the surfactants and the temperature of the solution, pulsed laser ablation in liquid method neither requires cumbersome equipment nor does it require intermediate chemicals and catalysts nor does it necessitate the post synthesis purification. The enhancement of photo-catalytic activity of cadmium sulfide-graphitic carbon nitride nanocomposite was tested for the photo-catalytic deactivation of Escherichia coli bacteria in water under visible light radiation. As anticipated, a significant improvement of photo-catalytic deactivation was observed, which is attributed to the enhanced and extended light absorption in the visible spectral region, and the formation of herterojunction between the semiconductors, which is instrumental in inhibiting the undesired recombination of photo-generated charge carriers. Quantitatively, the presence of cadmium sulfide on the graphitic carbon nitride surface contributed to a remarkable 129% increase of photo-catalytic degradation constant compared to pure graphitic carbon nitride, which resulted in the decrease of total depletion time of Escherichia coli from 156 min to 67 min with the cadmium sulfide-graphitic carbon nitride nanocomposite synthesized by pulsed laser ablation in liquid method. Our results on the efficient photo-catalytic deactivation of Escherichia coli under visible light assures that cadmium sulfide-graphitic carbon nitride nanocomposite can very well be used for photo-catalytic water purification by harvesting the abundant solar light.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of photochemistry and photobiology. B, Biology
ISSN: 1873-2682
Pages: 111783

Links

DeepDyve research library

PubMed Articles [22797 Associated PubMed Articles listed on BioPortfolio]

Advances in asymmetric visible-light photocatalysis, 2015-2019.

Asymmetric visible-light photocatalysis has recently drawn considerable attention of the scientific community owing to its unique activation modes and significance for the enantioselective green synth...

Evaluation of phototoxicity of tattoo pigments using the 3 T3 neutral red uptake phototoxicity test and a 3D human reconstructed skin model.

Phototoxicity due to dermally impregnated compounds exposed to ultraviolet radiation is associated with skin inflammation. The phototoxicity potential of active substances applied to the skin should b...

Visible-Light-Driven Synthesis of 1,3,4-Trisubstituted Pyrroles from Aryl Azides.

The synthesis of 1,3,4-trisubstituted pyrroles via visible-light mediated photoredox catalyzed condensation of arylazides and aldehydes has been reported herein. The methodology avoids the use of stoi...

Visible light promoted C-H functionalization of imidazoheterocycles.

Direct C-H functionalization is very important in the late-stage functionalization of drug molecules. In this context, visible light promoted transformations have emerged as a green strategy for C-H f...

Cyclometalated Ir-Zr-MOFs as Recyclable Visible-Light Photocatalysts for Sulfide Oxidation into Sulfoxide in Water.

Aerobic photo-oxidation of sulfide into sulfoxide in water is of great interest in synthesis chemistry. In this study, three high stable Ir(III)-Zr(IV) metal-organic frameworks (Ir-Zr-MOFs), namely Zr...

Clinical Trials [7808 Associated Clinical Trials listed on BioPortfolio]

Efficacy Evaluation of Products Against Long Wavelength Ultraviolet A1 and Visible Light Induced Biological Effects

The purpose of this study is to evaluate the efficacy of topical products in providing protection against the visible light and ultraviolet A1 (UVA1) part of sunlight. Ultraviolet radiatio...

Visible Light Study

The purpose of this study is to learn more about the potential effects of visible light on the skin. More specifically, this study will examine whether an incandescent lamp (light bulb) or...

Clinical Trial Evaluation of a Test Serum Post HEV (High Energy Visible) Light Exposure

To evaluate 10 days of pretreatment with a serum (Test Product/Marvel AM) to the lower back, followed by a single exposure of 90J/cm2 HEV (High Energy Visible) light {400-450nm wavelengths...

Effect of Topical Sulforaphane on Skin Aging and With Ultraviolet and Visible Light Exposure

The study is to compare the expression of both keratin 16 and 17 before and after application of sulforaphane on both photoprotected and photoexposed area, and to determine whether these f...

Impact of Long Wavelength Ultraviolet (UVA) and Visible Light on Melanocompetent Skin

- Determine the impact and the threshold of long wavelength UVA and visible light on immediate and delayed pigment production of melanocompetent individuals. - The study basicall...

Medical and Biotech [MESH] Definitions

Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.

Techniques using energy such as radio frequency, infrared light, laser light, visible light, or acoustic energy to transfer information without the use of wires, over both short and long distances.

Inorganic compounds that contain cadmium as an integral part of the molecule.

Poisoning occurring after exposure to cadmium compounds or fumes. It may cause gastrointestinal syndromes, anemia, or pneumonitis.

An element with atomic symbol Cd, atomic number 48, and atomic weight 114. It is a metal and ingestion will lead to CADMIUM POISONING.

Quick Search


DeepDyve research library

Searches Linking to this Article