SnO2-doped TiO2 nanostructured thin films with antibacterial properties

Sangchay, Weerachai; Kaewjang, Supachai

doi:10.1063/1.4965143

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…S. aureus generally causes skin infection and food poisoning in humans and in some severe cases, multiple exotoxins may occur, leading to critical effects such as shock, organ failure and death (Dinges et al, 2000;Bottone, 2010). It has been reported that diarrheal syndrome and chronic skin infection can be triggered by B. cereus (Prod'hom and Bille, 2010; Sangchay and Kaewjang, 2016).…”

Section: Antibacterial Property Of Lightweight Cement Blockmentioning

confidence: 99%

“…The addition of effective antibacterial agents into the construction materials can help to eliminate bio-organisms and to reduce health problems associated with allergy and respiratory track diseases. The addition of titanium dioxide, a renowned photocatalyst which exhibits prominent oxidation processes to sterilize and decompose organic impurity in environment, can be a route to produce construction materials with antibacterial properties (Abdel-Messih et al, 2013;Sangchay and Kaewjang, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Bio-waste-based lightweight cement blocks with antibacterial performance

2022

ANRES

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Importance of the work: Utilization of bio-waste-based construction materials is an effective route to create a more sustainable ecosystem. Objectives: This research investigated fabricating lightweight cement blocks prepared from bio-wastes. Additionally, the bio-waste-based cement blocks were tailored to include antibacterial properties. Materials & Methods:The synthetic cement-like material was prepared using a solution combustion technique, with cockleshells and rice husk ash as the key raw materials. Rice husk ash (20-60 wt%) was added to the cement-like material prior to casting. The density, compressive strength and antibacterial performance of the cement blocks were evaluated. Results: It was found that increased rice husk ash suppressed the compressive strength. Nevertheless, the average density (1.004 g/cm3) and average compressive strength (3.65 MPa) of all cement blocks were in the acceptable ranges for industrial requirements based on recognized standards, specifically Thai Industrial Standards Institute Type C12 (TISI 2601-2556). Enhancement of the compressive strength by more than 10% could be achieved when jute fibers were added. A colony count method was used to determine antimicrobial performance of the lightweight cement blocks. Addition of the powder obtained from the cement blocks into the Petri plates containing Gram-positive Staphylococcus aureus and Gram-positive Bacillus cereus indicated successful reductions of more than 99% of Staphylococcus aureus and Bacillus cereus colonies. Main finding: Cement-like material, which was successfully synthesized from bio-waste, was used in fabrication of jute fiber-reinforced eco-friendly lightweight cement blocks. In addition to acceptable density and compressive strength, the cement blocks demonstrated antibacterial performance.

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Section: Antibacterial Property Of Lightweight Cement Blockmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bio-waste-based lightweight cement blocks with antibacterial performance

2022

ANRES

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“…It has been reported that different structure of the titanium oxide, anatase, rutile and brookite, affects phototcatalytic performance of the material. The highest efficacy has been reported in anatase structure due to low rate of electron-hole recombination process [1][2]. Relatively wide bandgap of 3.2eV is the constraint limiting exploitation of titanium dioxide in UV range [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of Sn Concentration on Chemical Composition, Microstructure and Photocatalytic Activity of Nanoparticulate Sn-Doped TiO<sub>2</sub> Powders Synthesized by Solution Combustion Technique

Jongprateep

Meesombad

Techapiesancharoenkij

et al. 2018

KEM

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Utilization of photocatalytic properties of materials can be perceived through a wide range of applications, such as anti-bacterial, water treatment, and self-cleaning materials. It has been established that doping can result in alteration of photocatalytic activities. This study aimed at studying effects of tin concentration on chemical composition, microstructure, band gap energy, and photocatalytic activities of tin-doped titanium dioxide powder synthesized by solution combustion technique. Experimental results revealed that concentration of tin significantly influenced chemical composition of the powders. A semi-quantitative analysis indicated that tin oxide secondary phase increased from 11 to 23 wt%, as the Sn increased from 2.5 to 10 mol%, respectively. Tin concentration, nevertheless, did not significantly influence microstructure of the powders. All powders had average particle size ranging from 13.1 to 13.4 nm, which agglomerated into clusters with average sizes ranging from 103 to 140 nm. A slight increase of band gap energy was observed at higher tin concentration. The most prominent photocatalytic activities, determined from decomposition of methylene blue, was found in the titanium dioxide powder with 2.5 mol% Sn.

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