Biosynthesised bentonite clay-based Cu nanocomposite using Punica granatum L. peel extract for the effective catalytic reduction of hazardous aqueous contaminants DOI
Hamida Y. Mostafa, Mohammed M. Younus, Ahmed O. Abo El Naga

и другие.

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 21

Опубликована: Ноя. 17, 2024

This article describes a facile and green one-pot synthetic process of Cu nanoparticles loaded on bentonite composite (5Cu wt.%/bentonite) using the peel extract pomegranate (Punica granatum L.) as reductant. The 5Cu wt.%/bentonite was adopted heterogeneous catalyst for NaBH4-assisted reductive degradation Methylene Blue (MB) dye. prepared demonstrated high catalytic efficiency in reducing MB, achieving almost complete reduction within reaction duration short 60 seconds. Indeed, act electron relays, facilitating transfer from BH4− anions to MB dye, leading its conversion into colourless Leuco-Methylene (LMB). rate corresponded nicely with pseudo-first-order kinetic model, corresponding normalised constant (Knor) value computed 1.48 min−1 mg−1, outperforming numerous previously documented metal-containing catalysts. Remarkably, can straightforwardly be reused, observed across 5 successive cycles. Furthermore, used another reaction, involving toxic Cr(VI) environmentally benign Cr(III) adopting formic acid agent under ambient conditions. not only showed 95.5% 30 min but also outstanding reusability 93% removal following cycles, demonstrating versatility. mechanism involves dehydrogenation surface, followed by hydrogen converting Cr(III). Based straightforward strategy, use cost-effective readily available raw materials, excellent activity, versatility, reusability, seemed an ideal real-world harmful aqueous pollutants achieve environmental sustainability.

Язык: Английский

Ultra-Sensitive Dengue NS1 Protein Detection via Asymmetric Source-Drain, Heterojunction and Dual-Dielectric Cavities in a Uniform Tunnel FET Biosensor DOI Creative Commons

Ramasamy Thangavelu Rajendrakumar,

G. Lakshmi Priya

Results in Engineering, Год журнала: 2024, Номер 24, С. 103318 - 103318

Опубликована: Ноя. 4, 2024

Язык: Английский

Процитировано

1
Photocatalytic mineralization of diisopropanolamine (DIPA) from natural gas industry wastewater under visible light irradiation: Response surface optimization of synthesis parameters DOI Creative Commons
Nadia Riaz, Muhammad Saqib Khan, Sami Ullah

и другие.

Results in Engineering, Год журнала: 2024, Номер 21, С. 101912 - 101912

Опубликована: Фев. 10, 2024

The photocatalytic mineralization of diiospropanolamin (DIPA) in aqueous solution was investigated employing modified TiO2 under visible light. Response surface methodology based central composite design (CCD) used to explore the effect different synthesis parameters. analysis showed substantial impact (p < 0.0195) operational factors and their interactions on DIPA during degradation. Model predictions closely aligned with experimental outcomes (R2 = 0.9706, Adj-R2 0.9442). morphology revealed spherical agglomerates well-dispersed iron TiO2, which corroborated by Raman spectroscopy showing similar spectra bare however, increased intensity broader peaks at higher concentrations. Additionally, X-ray Diffraction confirmed crystalline nature synthesized nanocomposite, while BET area demonstrated an increasing trend metal loading. Under optimal conditions, 5% Fe loading 300 °C calcination for 1 h, efficiency significantly improved, achieving 45.78% first hour complete (100%) 2 h. This represents a promising addressing natural gas industry wastewater challenges. Future goals include further optimization enhanced efficiency.

Язык: Английский

Процитировано

0
Biosynthesised bentonite clay-based Cu nanocomposite using Punica granatum L. peel extract for the effective catalytic reduction of hazardous aqueous contaminants DOI
Hamida Y. Mostafa, Mohammed M. Younus, Ahmed O. Abo El Naga

и другие.

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 21

Опубликована: Ноя. 17, 2024

This article describes a facile and green one-pot synthetic process of Cu nanoparticles loaded on bentonite composite (5Cu wt.%/bentonite) using the peel extract pomegranate (Punica granatum L.) as reductant. The 5Cu wt.%/bentonite was adopted heterogeneous catalyst for NaBH4-assisted reductive degradation Methylene Blue (MB) dye. prepared demonstrated high catalytic efficiency in reducing MB, achieving almost complete reduction within reaction duration short 60 seconds. Indeed, act electron relays, facilitating transfer from BH4− anions to MB dye, leading its conversion into colourless Leuco-Methylene (LMB). rate corresponded nicely with pseudo-first-order kinetic model, corresponding normalised constant (Knor) value computed 1.48 min−1 mg−1, outperforming numerous previously documented metal-containing catalysts. Remarkably, can straightforwardly be reused, observed across 5 successive cycles. Furthermore, used another reaction, involving toxic Cr(VI) environmentally benign Cr(III) adopting formic acid agent under ambient conditions. not only showed 95.5% 30 min but also outstanding reusability 93% removal following cycles, demonstrating versatility. mechanism involves dehydrogenation surface, followed by hydrogen converting Cr(III). Based straightforward strategy, use cost-effective readily available raw materials, excellent activity, versatility, reusability, seemed an ideal real-world harmful aqueous pollutants achieve environmental sustainability.

Язык: Английский

Процитировано

0