Role of Nanotechnology in Photocatalysis

Tahir, Muhammad Bilal; Sohaib, Muhammad; Sagir, Muhammad; Rafique, Muhammad

doi:10.1016/b978-0-12-815732-9.00006-1

Cited by 77 publications

(55 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, the increase in intensity in some reactions leads to decreased photocatalytic efficiency due to the second-order recombination of the photo-induced charges. 224 At low intensity, the concentration of the photogenerated charge carrier is insignificant compared to the concentration of intrinsic majority carriers. Thus, it can also be assumed that the concentration of minority charges varies with incident light's intensity, whereas the concentration of majority charges stays nearly constant.…”

Section: Perovskite Oxide Based Materialsmentioning

confidence: 99%

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Perovskite Oxide Based Materialsmentioning

confidence: 99%

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Photocatalysis means the accelerated photoreaction in presence of catalysts. Recently, NPs have been used as catalysts due to their remarkable large surface area, high aspect ratios, exceptionally reliable, electrostatic and magnetic properties, compressible without modifying their surface area, hydrophilic and hydrophobic characteristics, and tunable pore volume 23 , 24 . The initial step of this technique begins with light (sunlight, halogen light, or UV) has been absorbed by a catalyst that enhances the production of electron–hole pairs which interact with the substrate to generate free radicals.…”

Section: Introductionmentioning

confidence: 99%

Light enhanced the antimicrobial, anticancer, and catalytic activities of selenium nanoparticles fabricated by endophytic fungal strain, Penicillium crustosum EP-1

Fouda

Hassan

Eid

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Selenium nanoparticles (Se-NPs) has recently received great attention over owing to their superior optical properties and wide biological and biomedical applications. Herein, crystallographic and dispersed spherical Se-NPs were green synthesized using endophytic fungal strain, Penicillium crustosum EP-1. The antimicrobial, anticancer, and catalytic activities of biosynthesized Se-NPs were investigated under dark and light (using Halogen tungsten lamp, 100 Watt, λ > 420 nm, and light intensity of 2.87 W m−2) conditions. The effect of Se-NPs was dose dependent and higher activities against Gram-positive and Gram-negative bacteria as well different Candida spp. were attained in the presence of light than obtained under dark conditions. Moreover, the viabilities of two cancer cells (T47D and HepG2) were highly decreased from 95.8 ± 2.9% and 93.4 ± 3.2% in dark than those of 84.8 ± 2.9% and 46.4 ± 3.3% under light-irradiation conditions, respectively. Significant decreases in IC50 values of Se-NPs against T47D and HepG2 were obtained at 109.1 ± 3.8 and 70.4 ± 2.5 µg mL−1, respectively in dark conditions than 19.7 ± 7.2 and 4.8 ± 4.2 µg mL−1, respectively after exposure to light-irradiation. The photoluminescence activity of Se-NPs revealed methylene blue degradation efficiency of 89.1 ± 2.1% after 210 min under UV-irradiation compared to 59.7 ± 0.2% and 68.1 ± 1.03% in dark and light conditions, respectively. Moreover, superior stability and efficient MB degradation efficiency were successfully achieved for at least five cycles.

show abstract

“…Most liquid biocides such as ethanol, sodium hypochlorite and electrolyzed water demonstrate prompt anti-SARS-CoV-2 activity [5,17]; however, those virucidal effects are short-term and become inactivated once contaminated with certain organic substances. By contrast, the photocatalytic techniques are expected to show relatively moderate but long-term virucidal activity because they are renewable [18]. In this study, we demonstrated the virucidal activity of the photocatalyst under a controlled experimental condition (6h-light exposure at 2O°C).…”

Section: Resultsmentioning

confidence: 62%

Photocatalyst under visible light irradiation inactivates SARS-CoV-2 on an abiotic surface

Uema¹,

Yonemitsu²,

Momose³

et al. 2020

Preprint

View full text Add to dashboard Cite

There is a worldwide attempt to develop prevention strategies against SARS-CoV-2 transmission. Here we examined the effectiveness of visible light-responsive photocatalyst RENECAT on the inactivation of SARS-CoV-2 under different temperatures and exposure durations. The viral activation on the photocatalyst-coated glass slides decreased from 5.93∓0.38 logTCID50/ml to 3.05∓ 0.25 logTCID50/ml after exposure to visible light irradiation for 6h at 20 degree C. On the other hand, lighting without the photocatalyst, or the photocatalyst-coat without lighting retained viral stability. Immunoblotting and electron microscopic analyses showed the reduced amounts of spike protein on the viral surface after the photocatalyst treatment. Our data suggest a possible implication of the photocatalyst on the decontamination of the SARS-CoV-2 in indoor environments, thereby preventing indirect viral spread.

show abstract

Role of Nanotechnology in Photocatalysis

Cited by 77 publications

References 116 publications

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

Light enhanced the antimicrobial, anticancer, and catalytic activities of selenium nanoparticles fabricated by endophytic fungal strain, Penicillium crustosum EP-1

Photocatalyst under visible light irradiation inactivates SARS-CoV-2 on an abiotic surface

Contact Info

Product

Resources

About