ACS Omega
·
2024
·
IF 3.7
Yuqian Zhou,Yuhe Zhou,Renlong Liu,Guocan Zheng,Changyuan Tao,Benjun Xi
The resource utilization of phosphogypsum (PG) is the key to promote the green development of the phosphorus chemical industry. The natural environment and public safety are significantly threatened by the enormous volume of PG storage. In this study, Ca and S were successfully recovered from the PG via a multistep precipitation in the NaOH–BaCO3 system. The alkali solution can be recycled five times, with a first recovery ratio of about 97.9%, and the decomposition ratio of PG remained above 70% after five cycles. In addition, the recovery ratios of Ca and S in PG are 99.9 and 82.5%, respectively. The product of BaSO4 can be used as a weighting agent for oil and natural gas drilling mud. The BaSO4 can also be used as wave-absorbing materials, and its reflection loss value reaches 97.8% of the analytical purity BaSO4. This work provides a new idea for the efficient recycling of Ca and S in PG with an outstanding application prospect.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Rongzhong Yang,Qi Hao,Jianan Zhao,Cong Lei,Shujie Xue,Fadong Miao,Wenbing Tang,Qinghong Huang,Jing Wang,Yuping Wu
The sulfur-doped yttrium ruthenate pyrochlore catalysts was synthesized by simple hydrothermal method and exhibits excellent OER activity and stability under acidic conditions. Remarkably, the Y 2 Ru 2 O 7 S-0.17 catalyst reaches a current density of 10 mA cm −2 with only 237 mV and remains stable during 30 hours of electrolysis. In contrast, the original Y 2 Ru 2 O 7 and commercial RuO 2 require 282 mV and 365 mV, respectively. The introduction of sulfur into the internal lattice, replacing a portion of oxygen ions, creates vacancies that enhance the surface adsorption of oxygen. Furthermore, density functional theory calculations expose that S-doping alters the hybridization between the Ru 4d center and O 2p orbitals, significantly decreasing the energy barrier of the rate-determining step of the OER (O*--OOH*). Consequently, the intrinsic activity of the catalyst is greatly enhanced.
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WATER RESEARCH
·
2025
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IF 12.4
Chaowen Zhang,Shuo Liu,Haiying Zhang,Wenjing Li,Chuchu Hu,Zhixue Wang,Yuchuan Yang,Tuyizere Clarck,Jingmin Zhu
Microplastics are widespread in global aquatic ecosystems and have become key vectors for transporting environmental contaminants. In this study, we investigated the adsorption behavior of bisphenol S (BPS) onto polyethylene terephthalate (PET) fibers under laboratory conditions. The adsorption capacity of PET fibers for BPS was concentration-dependent and reached equilibrium after approximately 48 h. Adsorption increased with rising temperatures from 10 °C to 30 °C, and decreased with increasing salinity from 0 to 32. Both PET fibers and BPS accumulated significantly in oysters after one hour exposure. The concentration of PET fibers in oysters co-exposed to PET and BPS was significantly higher than that in oysters exposed to PET alone between 6 and 24 h of exposure. Additionally, after 168 h, BPS levels in both gills and gonads of the BPS-only group were 1.1 to 1.7 times higher than those in the multiple co-exposure groups, suggesting that combined exposures with PET fibers reduce BPS accumulation compared to BPS exposure alone. RNA-seq analysis revealed that differentially expressed genes in the combined exposure group were mainly enriched in biological processes related to oxidative stress, lipid metabolism, immune response, and energy production. Furthermore, compared to the BPS-only group, the number of differentially expressed genes associated with neurogenesis and reproduction was reduced under combined exposure. These findings suggest a potential antagonistic interaction between PET fibers and BPS in oysters.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jing Li,Mingkun Wu,Rui Tu,Jiacheng Li,Keliang Wang,Ju Guo,Yi Xie
The limited narrow spectral absorption and rapid recombination of photogenerated carriers in photocatalytic materials result in inefficient molecular oxygen activation and insufficient generation of reactive oxygen species (ROS), severely restricting the degradation efficiency of organic pollutants. Herein, a composite catalyst with broad visible-light responsiveness was fabricated via a facile solvothermal and room-temperature stirring strategy, where sheet-like Bi 4 O 5 Br 2 was encapsulated with W 18 O 49 nanowires. The as-prepared catalyst exhibited high concentrations of h + and O 2 − active species, achieving a 92 % degradation rate of ciprofloxacin (20 mg/L) within 60 min, alongside exceptional environmental tolerance and stability. Experimental and computational investigations confirmed the S-scheme charge transfer mechanism, which enhances carrier separation while preserving electrons and holes with strong redox capabilities. The localized surface plasmon resonance (LSPR) effect of W 18 O 49 synergistically promoted hot electrons and photogenerated electrons to activate O 2 , generating abundant O 2 − . This work proposes a novel design paradigm for efficient and stable visible-light photocatalysts, advancing solutions to emerging antibiotic pollutants in aquatic systems.
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NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 24
·10261-10267
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IF 2.5
Fangyuan Fan,Chunlin Teng,Rongjin Zhu,Lina Zhu,Lingfei Xu,Yeshuang Du
Electrochemical water-splitting is a potential “green” approach to produce a large amount of hydrogen. However, its half reaction, the oxygen evolution reaction (OER), suffers sluggish dynamics and huge overpotential. This encumbers the energy conversion efficiency from electric energy to hydrogen energy, resulting in cost increases. Besides, rare metal catalysts such as RuO2 and IrO2 have high OER catalytic activity but they are low in reserve and expensive. Hence, exploration of highly efficient, stable and cheap transition metal-based electrocatalysts to speed up the OER rate is a rational approach. Herein, S-doped NiFe2O4@NiSe2 nanospheres supported on nickel foam were synthesized through a simple one-pot hydrothermal method. Thanks to the unique structure, large surface area, numerous active sites, incorporation of S-anion atoms and synergistic effect between different components, S-doped NiFe2O4@NiSe2 nanospheres showed extraordinarily efficient electrocatalytic activity towards the OER in alkaline medium. When the current density was 10 mA cm−2, the OER overpotential was 190 mV. Meanwhile, it exhibited excellent long-term stability and was maintained at 10 mA cm−2 for ≥94 h in a chronopotentiometry test.
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Coatings
·
2025
·Vol. 15
·期 6
·630
·
IF 2.8
Zhaobin Lu,Baoxin Wang,Shengtao Li,Feiyan Pan,Xuewei Zhu,Xiaofeng Wei
In the “dual carbon” objective, the preparation of non-precious metal catalysts with low cost and high activity is essential for the study of hydrogen evolution reactions (HERs). This study employed biomass pomelo peel powder as the carbon source and ammonium metatungstate (AMT) as the tungsten source and, through a facile one-step method in molten salt, fabricated a biomass carbon-based nanocatalyst featuring carbon flakes adorned with tungsten carbide (WC) nanoparticles. Dicyandiamide and cysteine were introduced as nitrogen and sulfur sources, respectively, to explore the impacts of N-S elemental doping on the structure, composition, and HER performance of the WC/C catalyst. The experimental results showed that N-S doping changed the electronic structure of WC and increased the electrochemically active surface area, resulting in a significant increase in the HER activity of WC/C@N-S catalysts. The WC/C@N-S catalyst was evaluated with hydrogen evolution performance in a 0.5 mol/L H2SO4solution. When the cathodic current density reached 10 mA/cm2, the overpotential was 158 mV, and the Tafel slope was 68 mV/dec, underscoring its excellent HER performance. The outcomes offer novel insights into the high-value utilization of agricultural biomass resources, and pave the way for the development of cost-effective, innovative hydrogen evolution catalysts.
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Catalysts
·
2025
·Vol. 15
·期 5
·460
·
IF 4
Yameng Wang,Ao Xu,Jihui Lang,Bin Zuo,Zihan Yu,Keyu Cui,Xuefei Li,Kewei Zhang,Xin Li,Maobin Wei,Jian Cao
CO2photoreduction technology offers significant potential for addressing energy and environmental challenges, though its practical application is hindered by insufficient photo-absorption and rapid carrier recombination. Herein, we constructed the WO3/In2S3S-scheme heterojunction through hydrothermal assembly of two-dimensional WO3nanosheets and scale-like In2S3nanoflakes. Systematic characterization via XRD, XPS, SEM, and TEM verified the successful preparation of hierarchical nanostructures with optimized interfacial contact in the WO3/In2S3composites. UV-Vis DRS analysis showed that the photo-absorption range of the catalyst was significantly widened. Photoelectrochemical investigations (EIS, TPR, PL, and LSV) revealed enhanced carrier separation efficiency and reduced recombination kinetics in the heterojunction system. The optimized WO3/In2S3(WI-60) catalyst had a CO evolution efficiency of 55.14 μmol·g−1under the UV-Vis light, representing a 3.9-fold enhancement over the pure In2S3(14.08 μmol·g−1). Mechanistic studies through the XPS and band-structure analysis confirmed the establishment of an S-scheme carrier’ transfer pathway, which simultaneously preserved strong redox potentials and promoted the separation process of carriers. This research provides a validated strategy for developing efficient S-scheme photocatalytic systems for solar fuel generation.
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Biomaterials Advances
·
2025
·
IF 6
Ying Sun,Yining Cai,Shanshan Xu,Ningning Zhai,Zirui Wang,Zongpu Qiu,Shuying Han,Yuanqing Wei,Rui Liu,Hao Wu
While the regulatory roles of biomaterial topology in bone regeneration are recognized, the specific osteogenic mechanisms driven by distinct morphological features, particularly without biochemical cues, remain poorly understood. This study aimed to independently elucidate the osteogenic potential and underlying mechanisms solely attributable to the distinctive “S”-grooved topology derived from cuttlebone. Inspired by cuttlebone, we successfully fabricated a biomimetic polycaprolactone (PCL) membranes sheet with “S”-grooved topology using liquid silicone mold replication combined with PCL recasting techniques. Comprehensive characterization (SEM, CLSM) confirmed precise replication of the native “S”-grooved morphology (width: 100 ± 30 μm, depth: 20 ± 6 μm). In vitro studies revealed that these grooves promoted directional adhesion and proliferation of rat bone marrow mesenchymal stem cells (rBMSCs) via contact guidance, as evidenced by cytoskeleton alignment. Furthermore, the “S”-grooved topology significantly enhanced osteogenic differentiation of mouse pre-osteoblasts (MC3T3-E1), demonstrated by increased alkaline phosphatase (ALP) activity and mineralized nodule formation. Mechanistic investigations using RT-qPCR, Western blot, and dimethyl labeling-based quantitative proteomics on rBMSCs identified key involvement of the Rap1-ERK signaling pathway. Specifically, the “S”-grooved topology upregulated Rap1 expression and enhanced ERK phosphorylation, leading to increased expression of osteogenic markers (e.g., Runx2, OPN). These findings demonstrate that the biomimetic “S”-grooved topology alone, through contact guidance and activation of the Rap1-ERK mechanotransduction pathway, significantly enhances osteogenic differentiation, providing a foundation for designing topologically optimized biomaterials for bone regeneration biomimetic PCL membranes sheet with the “S”-grooved topology.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jinzhi Cao,Yilin Zhao,Meihui Chen,Zhiyi Zhao,Yuhan Xiong,Dingding Tang,Yan Zhou,Xiong Qin,Nanqi Ren,Hui Wang,Jie Ding
Visible light-driven degradation of chlorophenols using metal-free photocatalysts has attracted significant attention. Two-dimensional covalent organic frameworks (2D COFs) exhibited high levels of visible-light activity. To address the challenges of insufficient redox capacity and recombination of photogenerated carriers of COFs, an S-scheme heterojunction is constructed from COFs with nitrogen vacancies modified graphitic carbon nitride (NVCN) to improve photocatalytic activity. Introducing electron donors (-OH and -C C) into COF could reduce the optical band gap and increase visible-light absorption. Meanwhile, they can form donor-acceptor (D-A) effects with nitrogen vacancies, thereby redistributing charge and enhancing the transfer rate of photogenerated electrons. Formation of S-scheme heterojunction effectively enhances the migration of photogenerated carriers and redox ability, the optimized heterojunction (COF-C C/NVCN) was able to degrade 98 % 4-chlorophenol within 90 min under visible light irradiation ( k = 0.044 min –1 ), which was 10–12 times higher than COF-H/NVCN or NVCN. This study provides the great potential of D-A COF/NVCN-based S-scheme heterojunctions for environmental remediation.
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STAR Protocols
·
2025
·
IF 1.3
Bei Jiang,Chuyao Xiao,Li Liu
Summary Gene deletions perturb cellular homeostasis, affecting gene expression and phenotypes. Here, we present a protocol for serial transfer experiments in Saccharomyces cerevisiae strains following targeted gene knockouts. We describe steps for gene deletion, serial passage optimization, and growth kinetics analysis. We then detail procedures for genomic and transcriptomic profiling. This protocol enables the investigation of changes in yeast strains resulting from gene loss. For complete details on the use and execution of this protocol, please refer to Jiang et al. 1
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Rongrong Yu,Jingjing Wang,Xinyu Zhi,Danyi Yang,Yongqi Zhao,Guifeng Chen,Chengchun Tang,Yi Fang
With growing concerns about antibiotic contamination in water environments, developing efficient photocatalysts for tetracycline (TC) degradation has become imperative. In this study, a novel nanoflower-like BiOI/UiO-66(Ce/Fe) S-scheme heterojunction photocatalyst was developed for efficient TC degradation under visible light. Experimental evaluations revealed that the optimized 0.05-Bi/U(Ce/Fe) sample achieved 99.5 % TC degradation efficiency, maintaining 88.8 % of its initial activity after four consecutive cycles. The superior photocatalytic activity arises from three synergistic mechanisms: Fe 3+ doping modulates the band structure to broaden visible-light absorption, while the synergistic effect of Ce 4+ /Ce 3+ and Fe 3+ /Fe 2+ redox pairs optimizes charge transport. The internal electric field at the BiOI/UiO-66(Ce/Fe) heterojunction enhances charge separation while maximizing the redox capacity of the photocatalyst. Radical capture experiments and LC-MS analysis confirmed ·O 2 − and ·OH as the dominant reactive radicals, with proposed possible degradation pathways. Thus, a new synergistic strategy for designing efficient photocatalysts is proposed in this work.
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CHEMOSPHERE
·
2024
·
IF 8.1
Qi Chen,Ling Hu,Yingzhang Shi,Cheng Liu,Yidong Hou,Jinhong Bi,Jimmy C. Yu,Ling Wu
Heterogeneous photocatalytic degradation of antibiotic involves the activation of antibiotic molecules and the photocatalytic oxidation process. However, the simultaneous improvement of these processes is still a challenge. Herein, S-scheme heterojunctions consisted of Cu 2 O nanocluster with defective WO 3 nanosheets were constructed for efficient photocatalytic degradation of levofloxacin (LVX). The typical CNS-5 composite (5 wt% Cu 2 O/WO 3 ) achieves an optimal LVX degradation efficiency of 97.9% within 80 min. The spatial charge separation and enhancement of redox capacity were realized by the formation of S-scheme heterojunction between Cu 2 O and WO 3 . Moreover, their interfacial interaction would lead to the loss of lattice oxygen and the generation of W 5+ sites. It is witnessed that the C–N of piperazine ring and C O of carboxylic acid in LVX are coordinated with W 5+ sites to build the electronic bridge to activate LVX, greatly promoting the further degradation. This work highlights the important role of selective coordination activation cooperated with S-type heterojunctions for the photocatalytic degradation and offers a new view to understand the degradation of antibiotics at molecular level.
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