Engineering n-Type and p-Type BiOI Nanosheets: Influence of Mannitol on Semiconductor Behavior and Photocatalytic Activity DOI Creative Commons
Shuo Yang, Wenhui Li, Kaiyue Li

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(24), P. 2048 - 2048

Published: Dec. 21, 2024

Photocatalytic technology holds significant promise for sustainable development and environmental protection due to its ability utilize renewable energy sources degrade pollutants efficiently. In this study, BiOI nanosheets (NSs) were synthesized using a simple water bath method with varying amounts of mannitol reaction temperatures investigate their structural, morphological, photoelectronic, photocatalytic properties. Notably, the introduction played critical role in inducing transition from an n-type p-type semiconductor, as evidenced by Mott–Schottky (M-S) band structure analyses. This transformation enhanced density holes (h+) primary charge carriers resulted most negative conduction (CB) position (−0.822 V vs. NHE), which facilitated generation superoxide radicals (·O2−) activity. Among samples, BiOI-0.25-60 NSs (synthesized 0.25 g at 60 °C) exhibited highest performance, characterized largest specific surface area (24.46 m2/g), optimal gap (2.28 eV), efficient photogenerated separation. experiments demonstrated that achieved superior methylene blue (MB) degradation efficiency 96.5% under simulated sunlight, 1.14 times higher than BiOI-0-70 NSs. Additionally, effectively degraded tetracycline (TC), 2,4-dichlorophenol (2,4-D), rhodamine B (Rh B). Key factors such photocatalyst concentration, MB solution pH analyzed, excellent recyclability, retaining over 94.3% activity after three cycles. Scavenger tests further identified ·O2− h+ dominant active species driving process. pivotal modulating semiconductor characteristics nanomaterials is underscored, particularly promoting enhancing efficiency. These findings provide valuable strategy designing high-performance photocatalysts remediation applications.

Language: Английский

Advances in phytoremediation approach for resource recovery from wastewater DOI
Prasann Kumar

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 16

Published: Nov. 22, 2024

Language: Английский

Citations

0
Environmental problems of emerging toxic metals and treatment technology and methods DOI Creative Commons
Yanhao Zhang, Zhiyuan Shen,

Wenlu Zhou

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(50), P. 37299 - 37310

Published: Jan. 1, 2024

The increasing industrial use of toxic metals essential for modern electronics and renewable energy presents significant environmental health challenges. This review was needed to address the risks posed by metals, particularly those accumulating in soil sediment ecosystems. objective is examine sources metal pollution, their ecological impacts, effectiveness existing treatment technologies. By comprehensively reviewing recent literature, we analyzed physiological molecular responses plants focusing on toxicity mechanisms. Key parameters measured include concentration, health, microbial diversity, plant stress responses. Our findings highlight that such as lithium, nickel, indium, fueled activities, including mining electronic waste disposal, significantly disrupt These bioaccumulate, harming communities aquatic life. For instance, ecosystems, cadmium lead inhibit functions, while systems, resuspension sediment-bound leads persistent contamination. Data show phytoremediation techniques are effective reducing concentrations up 30-40%. In conclusion, long-term monitoring sustainable remediation strategies mitigate these impacts. Future efforts should focus enhancing efficiency bioremediation integrating methods into global management practices.

Language: Английский

Citations

0
Potential of water sediments in construction materials: current approaches and critical consideration of future challenges DOI Creative Commons
Jan Fořt,

Ayodele Afolayan,

Václav Kočí

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 11(1), P. e41121 - e41121

Published: Dec. 11, 2024

Language: Английский

Citations

0
Engineering n-Type and p-Type BiOI Nanosheets: Influence of Mannitol on Semiconductor Behavior and Photocatalytic Activity DOI Creative Commons
Shuo Yang, Wenhui Li, Kaiyue Li

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(24), P. 2048 - 2048

Published: Dec. 21, 2024

Photocatalytic technology holds significant promise for sustainable development and environmental protection due to its ability utilize renewable energy sources degrade pollutants efficiently. In this study, BiOI nanosheets (NSs) were synthesized using a simple water bath method with varying amounts of mannitol reaction temperatures investigate their structural, morphological, photoelectronic, photocatalytic properties. Notably, the introduction played critical role in inducing transition from an n-type p-type semiconductor, as evidenced by Mott–Schottky (M-S) band structure analyses. This transformation enhanced density holes (h+) primary charge carriers resulted most negative conduction (CB) position (−0.822 V vs. NHE), which facilitated generation superoxide radicals (·O2−) activity. Among samples, BiOI-0.25-60 NSs (synthesized 0.25 g at 60 °C) exhibited highest performance, characterized largest specific surface area (24.46 m2/g), optimal gap (2.28 eV), efficient photogenerated separation. experiments demonstrated that achieved superior methylene blue (MB) degradation efficiency 96.5% under simulated sunlight, 1.14 times higher than BiOI-0-70 NSs. Additionally, effectively degraded tetracycline (TC), 2,4-dichlorophenol (2,4-D), rhodamine B (Rh B). Key factors such photocatalyst concentration, MB solution pH analyzed, excellent recyclability, retaining over 94.3% activity after three cycles. Scavenger tests further identified ·O2− h+ dominant active species driving process. pivotal modulating semiconductor characteristics nanomaterials is underscored, particularly promoting enhancing efficiency. These findings provide valuable strategy designing high-performance photocatalysts remediation applications.

Language: Английский

Citations

0