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Polyaniline-ZnTi-LDH heterostructure with d-π coupling for enhanced photocatalysis of pollutant removal.
J Colloid Interface Sci
January 2025
School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China. Electronic address:
Heterointerface engineering is an effective strategy to design and construct high-performance photocatalysts. Herein, polyaniline (PANI) nanoparticles and ZnTi layered double hydroxide (ZnTi-LDH) nanosheets were integrated to form organic-inorganic heterostructure (PANI/LDH) via d-π electronic coupling using in-situ polymerization for photocatalytic oxidation/reduction towards tetracycline (TC) and Cr(VI). The photocatalytic activity was closely related to feed amount of aniline (Ani) in the polymerization process, which the abundant PANI nanoparticles were evenly distributed on the surface of ZnTi-LDH nanosheets at the proper Ani feed amount, and thus reinforced d-π electronic coupling at the organic-inorganic interfaces more efficiently.
View Article and Find Full Text PDFSynergistic transformation of Cr(VI) in lubricant degradation by bacterial consortium.
World J Microbiol Biotechnol
January 2025
Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry Education, Chongqing Technology and Business University, Chongqing, 400067, China.
In recent years, it has become widely acknowledged that heavy metals are often present in oil-contaminated sites. This study utilized three specific types of microorganisms with different functions to construct a composite bacterial consortium for treating lubricant-Cr(VI) composite pollutants. The selected strains were Lysinbacillus fusiformis and Bacillus tropicus.
View Article and Find Full Text PDFCharacterization and Molecular Insights of a Chromium-Reducing Bacterium .
Microorganisms
December 2024
Environmental Biotechnology Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka 1349, Bangladesh.
Environmental pollution from metal toxicity is a widespread concern. Certain bacteria hold promise for bioremediation via the conversion of toxic chromium compounds into less harmful forms, promoting environmental cleanup. In this study, we report the isolation and detailed characterization of a highly chromium-tolerant bacterium, CRB14.
View Article and Find Full Text PDFFerruginous hemeprotein HhuH facilitates the cadmium adsorption and chromium reduction in sp. SY1.
Appl Environ Microbiol
December 2024
National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China.
Article Synopsis
- Cadmium (Cd) and chromium (Cr) are toxic metals that stress bacteria by depleting essential iron (Fe), crucial for their survival.
- The study focuses on a bacterium (strain SY1) that can immobilize Cd(II) and reduce Cr(VI), revealing that a protein called HhuH plays a key role in this process by chelating Cd(II) and facilitating Cr(VI) reduction.
- Understanding how this bacterium manages heavy metal detoxification while maintaining Fe balance offers insights into potential strategies for cleaning up heavy metal contamination in the environment.
Revealing multi-level shortrange migration of electrons on full-spectrum response e-LDH/t-BiOCl/BiS and their essential role in the detoxification of Cr(VI) and refractory organic pollutants.
Environ Res
November 2024
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China.
The toxic dyeing wastewater containing both carcinogenic Cr(VI) and refractory dyes poses serious threats to ecological safety and human health. Herein, a novel composite photocatalytic material e-LDH/t-BiOCl/BiS with an ultrathin sandwich structure constructed achieves removal rate constants of 0.044 and 0.
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