The low-toxicity treatment of chromium-containing wastewater represents an important way of addressing key environmental problems. In this study, a core-shell structural ZIF-8@TiO photocatalyst was synthesized by a simple one-step hydrothermal method. The obtained composite photocatalyst possessed improved photocatalytic activity compared with TiO. The results indicated that the optimized ZIF-8@TiO composite exhibited the highest removal efficiency with 93.1% of Cr(VI) after 120 min under UV-vis irradiation. The removal curves and XPS results indicated that the adsorbed Cr(VI) on the ZIF-8 during the dark process was preferentially reduced. The superior removal efficiency of ZIF-8@TiO is attributed to the combination of both high adsorption of ZIF-8, which attracted Cr(VI) on the composite surface, and the high separation efficiency of photo-induced electron-hole pairs. For the mixture of wastewater that contained methyl orange and Cr(VI), 97.1% of MO and 99.7% of Cr(VI) were removed after 5 min and 60 min light irradiation, respectively. The high removal efficiency of multiple pollutants provides promising applications in the field of Cr(VI) contaminated industrial wastewater treatment.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8778119 | PMC |
| http://dx.doi.org/10.3390/nano12020291 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A high-performance g-CN/BiSiO heterojunction photocatalyst induced by constructing S-scheme electron-highways.
Sci Rep
January 2025
College of Chemistry and Chemical Engineering, Tarim University, Alar, 843300, Xinjiang, China.
We have developed a novel S-scheme mechanism to expand the photoresponse range of BiSiO. This study reports the successful creation of a CN/BS heterojunction photocatalyst, which is composed of g-CN and BiSiO. The synthesis was achieved through a simple two-step procedure, involving hydrothermal treatment and subsequent calcination.
View Article and Find Full Text PDFComputational evaluation of micropores wetting effect on the removal process of CO through the membrane contactor.
Sci Rep
January 2025
College of Pharmacy, The Islamic University, Najaf, Iraq.
In the current years, gas-liquid membrane contactors (GLMCs) have been introduced as a promising, versatile and easy-to-operate technology for mitigating the emission of major greenhouse contaminants (i.e., CO and HS) to the ecosystem.
View Article and Find Full Text PDFCovalently crosslinked carboxymethyl chitosan beads containing SiO and ionic polymer for efficient adsorptive removal of methylene blue.
Int J Biol Macromol
January 2025
College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, PR China. Electronic address:
The carboxymethyl chitosan (CMCS)-based porous beads are still criticized for their limited number of binding sites, which impairs their efficacy in removing aqueous pollutants. To overcome this challenge, this work introduces the production of covalently crosslinked CMCS-based beads containing SiO and poly(2-acrylamido-2-methylpropanesulfonic acid) (PAMPS). The porous composite beads not only possess remarkable stability under acidic conditions, but also have abundant active binding sites for adsorption.
View Article and Find Full Text PDFBenzotrithiophene-based covalent organic frameworks for sensitive fluorescence detection and efficient removal of Ag from drinking water.
Talanta
December 2024
Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Shenzhen Key Laboratory of Food Macromolecules Science and Processing, Shenzhen University, Shenzhen 518060, China. Electronic address:
The simultaneous detection and removal of Ag from drinking water was crucial for preventing human health, while it was also extremely challenging due to bifunctional materials that combine both Ag adsorption and detection functions rarely being explored. In this study, a benzotrithiophene-based covalent organic framework (TAPA-BTT) was synthesized and applied to detect and remove Ag. TAPA-BTT exhibited high crystallinity, a large specific surface area, and good thermal stability.
View Article and Find Full Text PDFInsect-derived biochar for CO adsorption under humid conditions: Elucidating adsorption mechanisms and competitive interactions with water molecules.
Sci Total Environ
January 2025
Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea. Electronic address:
The CO adsorption capacity of biochar depends on the type of biomass used and its physicochemical properties; various sorption parameters including temperature, CO concentration, and humidity affect the CO adsorption capacity. Biochar derived from defatted black soldier fly larvae (BSFL) biomass was investigated for direct CO capture and exhibited a hydrophilic/mesoporous structure that contained high concentrations of alkali and alkaline metals (>10 wt%), which contribute to CO chemisorption. The CO adsorption efficiency was higher at 25 °C compared with that at 30 °C and 35 °C, probably due to reduced Brownian motion of CO molecules at lower temperatures.
View Article and Find Full Text PDFWant 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!