Defect-engineered dual Z-scheme core-shell MoS/WO/AgBiS for antibiotic and dyes degradation in photo and night catalysis: Mechanism and pathways.

Environ Pollut

Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China. Electronic address:

Published: September 2024

AI Article Synopsis

  • Water pollution from antibiotics and synthetic dyes and energy crises from limited fossil fuels are urgent contemporary issues.
  • Researchers developed a multifunctional material (MoS/WO/AgBiS) that enhances photocatalytic performance, enabling effective degradation of pollutants in various light conditions.
  • The material significantly removed high percentages of contaminants, demonstrating its potential for addressing environmental and energy challenges.

Article Abstract

Water pollution caused by antibiotics and synthetic dyes and imminent energy crises due to limited fossil fuel resources are issues of contemporary decades. Herein, we address them by enabling the multifunctionality in dual Z-scheme MoS/WO/AgBiS across photolysis, photo Fenton-like, and night catalysis. Defect, basal, and facet-engineered WO is modified with MoS and AgBiS, which extended its photoresponse from the UV-NIR region, inhibited carrier recombination, and reduced carrier transfer resistance. The electric field rearrangement leads to a flow of electrons from MoS and AgBiS to WO and intensifies the electron population, which is crucial for night catalysis. When MoS/WO/AgBiS was employed against doxycycline hydrochloride (DOXH), it removed 95.65, 81.11, and 77.92 % of DOXH in 100 min during photo-Fenton (PFR), night-Fenton (NFR), and photocatalytic (PCR) reactions, respectively. It also effectively removed 91.91, 98.17, 99.01, and 98.99 % of rhodamine B (RhB), Congo red (CR), methylene blue (MB), and methylene orange (MO) in Fenton reactions, respectively. ESR analysis consolidates the ROS generation feature of MoS/WO/AgBiS using HO with and without irradiation. This work provides a strategy to eliminate the deficiencies of WO and is conducive to the evolution of applications seeking to combat environmental and energy crises.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.envpol.2024.124375DOI Listing

Publication Analysis

Top Keywords

night catalysis
12
dual z-scheme
8
energy crises
8
mos agbis
8
defect-engineered dual
4
z-scheme core-shell
4
mos/wo/agbis
4
core-shell mos/wo/agbis
4
mos/wo/agbis antibiotic
4
antibiotic dyes
4

Similar Publications

Sleeping refuges-like other important, scarce and shareable resources-can serve as hotspots for animal interaction, shaping patterns of attraction and avoidance. Where sleeping sites are shared, individuals balance the opportunity for interaction with new social partners against their need for sleep. By expanding the network of connections within animal populations, such night-time social interactions may have important, yet largely unexplored, impacts on critical behavioural and ecological processes.

View Article and Find Full Text PDF

Enhanced removal of tetracycline in light-dark tandem by FeCu-doped carbon composites derived from waste cotton fabrics.

Sci Total Environ

November 2024

School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China.

It is of great significance to develop an energy-efficient and external oxidant-free strategy for antibiotics removal. In this study, the novel light-dark tandem strategy was established to enhance tetracycline (TC) removal by bifunctional FeCu-doped carbon composites (FeCu@BC) derived from waste cotton fabrics. Interestingly, over 95 % TC was removed by FeCu@BC under light alone and dark alone in 10 min, with the same preferred conditions of pH 7.

View Article and Find Full Text PDF

Machine learning-assisted substrate binding pocket engineering based on structural information.

Brief Bioinform

July 2024

Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology and School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.

Engineering enzyme-substrate binding pockets is the most efficient approach for modifying catalytic activity, but is limited if the substrate binding sites are indistinct. Here, we developed a 3D convolutional neural network for predicting protein-ligand binding sites. The network was integrated by DenseNet, UNet, and self-attention for extracting features and recovering sample size.

View Article and Find Full Text PDF

Cyano-deficient g-CN for round-the-clock photocatalytic degradation of tetracycline: Mechanism and application prospect evaluation.

Water Res

August 2024

Key Laboratory of the Three Gorges Reservoir Region's Eco-environment of Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China. Electronic address:

Without light at night, the system for photocatalytic degradation of refractory organic pollutants in aquatic environments based on free radicals will fall into a dormant state. Hence, a round-the-clock photocatalyst (CCN@SMSED) was prepared by in situ growth of cyanide-deficient g-CN on the surface of SrMgSiO:Eu,Dy through a simple calcination method. The CCN@SMSED exhibits an outstanding oxidative degradation ability for refractory tetracycline (TC) in water under both light and dark conditions, which is attributed to the synergistic effect of free radical (•O and •OH) and non-radical (h and O).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!