APPLIED SURFACE SCIENCE
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2025
·
IF 6.9
Wenjie Guo,Yinghua Lan,Jien Niu,Wenwen Chen,Yanhui Zhang,Guoping Li,Juan Xu
A series of TiO 2 -CdS composites were prepared at room temperature using a one-step precipitation method, and an appropriate loading ratio was determined. Compared with pure TiO 2 and CdS, the composites exhibited superior photocatalytic degradation performance in the degradation of ciprofloxacin (CIP) and the reduction of Cr(Ⅵ). The incorporation of an appropriate amount of TiO 2 effectively suppressed the agglomeration of CdS nanoparticles and enhanced interfacial electron transfer, thereby significantly improving photocatalytic efficiency. Furthermore, a metal ion-mediated redox synergistic system was successfully constructed, achieving efficiency breakthroughs in the degradation of bisphenol A (BPA) and ibuprofen (IBU), which exhibited negligible photocatalytic activity under conventional conditions. The influence of different heavy metal ions on the photocatalytic degradation performance of organic pollutants were discussed. This provides a robust theoretical basis for the removal and resource recovery of refractory organic compounds.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haixue Zhao,Jinghan Peng,Zidan Chen,Yingtang Zhou,Ming Xu,Haibo Zhang,Xue Zhao
The development of high performance and stable heterogeneous catalysts is conducive to promoting the advanced oxidation process (AOPs) to promote the degradation of organic pollutants efficiently, low-cost and environmentally friendly. Here nitrogen-doped hollow carbon spheres (NHCSs) and rigid organic molecule were used to create space confinement and complexation confinement conditions, respectively, and an advanced single-atom catalyst capable of strongly activating peroxymonosulfate (PMS) to degrade organic pollutants was finally constructed. The AOPs system driven by CoNC/NHCSs (20 mg) combined with PMS (20 mg) can degrade nearly 100 % of 20 mg/L (100 mL) bisphenol A (BPA, a microplastic) pollutant within 30 min, and the mineralization rate is up to 70.5 %. Face the complex water environment, such as sewage containing coexisting anions and cations, or acidic or alkaline sewage, the CoNC/NHCSs/PMS system still has high catalytic stability, and universality for other organic pollutants. The filter column with CoNC/NHCSs as the core also realizes the continuous purification of organic pollutants, which shortens the distance between laboratory research and practical application. Radical quenching and electron paramagnetic resonance techniques confirmed that CoNC/NHCSs activated PMS to SO 4 ·− , ·OH, and 1 O 2 , and these reactive oxygen species combined to eliminate organic pollutants. Density functional theory (DFT) calculations jointly confirm that the strong activation of PMS by CoNC/NHCSs is the key to achieving efficient degradation of organic pollutants, and the activity of CoNC/NHCSs is derived from high exposure rate of active sites and curvature effect caused by structural bending.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuanchuan Ma,Jiao Wei,Yang Hu,Jialong Zhu,Wen-Jun Wang,Hong Fan
Superhydrophobic coatings have attracted widespread attention for their high versatility and scalability in various water-involved application scenarios. Developing superhydrophobic coatings with excellent durability is important, yet extremely challenging. Since the interfacial bonding offered by the essential low-surface-energy property is too limited to maintain surface textures. Herein, a well-tailored strategy is proposed to address the interfacial weakness by introducing efficient adhesive functional moieties into the low surface energy polymer structures employed for constructing superhydrophobic coatings. Catechol and urea groups were selected as key functional moieties and were homogeneously dispersed within the silicone network by being constructed as crosslinkers. In addition, the urea moiety effectively suppressed the oxidation failure of the catechol moiety because of the molecular encapsulation effect which functioned through the hydrogen-bonded intermolecular interactions. Owing to the synergistic enhancement of the two adhesion functional moieties, the optimized superhydrophobic coating showed over fivefold boost in mechanical stability, tolerating 40 m of sandpaper abrasion and 250 cycles of tape peeling. Superhydrophobicity was also well kept after various harsh environmental tests including chemical corrosion, UV aging, and extreme temperatures. This novel approach indicates a feasible way to enhance durability and will contribute to the practical application of superhydrophobic coatings.
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Biosensors-Basel
·
2025
·Vol. 15
·期 1
·52
·
IF 5.6
Qi Yuan,Yunqing Wang
High-sensitivity and repeatable detection of hydrophobic molecules through the surface-enhanced Raman scattering (SERS) technique is a tough challenge because of their weak adsorption and non-uniform distribution on SERS substrates. In this research, we present a simple self-assembly protocol for monolayer SERS mediated by 6-deoxy-6-thio-β-cyclodextrin (β-CD-SH). This protocol allows for the rapid assembly of a compact silver nanoparticle (Ag NP) monolayer at the oil/water interface within 40 s, while entrapping analyte molecules within hotspots. The proposed method shows general applicability for detecting hydrophobic molecules, exemplified as Nile blue, Nile red, fluconazole, carbendazim, benz[a]anthracene, and bisphenol A. The detection limits range from 10−6to 10−9M, and the relative standard deviations (RSDs) of signal intensity are less than 10%. Moreover, this method was used to investigate the release behaviors of a hydrophobic pollutant (Nile blue) adsorbed on the nanoplastic surface in the water environment. The results suggest that elevated temperatures, increased salinities, and the coexistence of fulvic acid promote the release of Nile blue. This simple and fast protocol overcomes the difficulties related to hotspot accessibility and detection repeatability for hydrophobic analytes, holding out extensive application prospects in environmental monitoring and chemical analysis.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2025
·
IF 8
Ziwen Wang,Chenghao Li,Hongjuan He,Yijia Cao,Xinyue Liu,Meiqi Feng,Tong Wu,Ximeijia Zhang,Pengcheng Li,Xin Hu,Jiahang Li,Chengjin Qi,He Xiao,Qiong Wu
Bisphenol A (BPA) is one of the most widely produced industrial chemicals globally. Exposure to BPA has been associated with neurobehavioral disorders and various other diseases. As an endocrine disruptor, BPA primarily binds to oestrogen receptors, thereby interfering with multiple neurological functions. Despite extensive research into its disruptive effects, the neurotoxicity of BPA remains incompletely understood. This study aimed to investigate the effects of long-term BPA exposure on behavioural memory and the neurological system in adult mice. Using a combination of behavioural and morphological analyses, along with single-cell sequencing technology, we examined the sex-specific effects of BPA and its underlying neurotoxic mechanisms. In female mice, prolonged BPA exposure disrupted oestrogen signalling, leading to glial hyperplasia in the hippocampus. This, in turn, resulted in depression-like behaviours and impairments in spatial learning and memory. In male mice, chronic BPA exposure induced apoptosis of granule neurons in the hippocampal dentate gyrus, contributing to a degree of brain atrophy. These changes led to depressive and anxiety-like behaviours, impaired spatial learning, and memory, and increased susceptibility to neurodegenerative conditions. This study elucidates the cellular and molecular mechanisms underlying the sex-specific neurotoxicity of BPA. The findings not only advance our understanding of the neurological risks posed by endocrine-disrupting chemicals but also provide critical scientific evidence to support precision medicine strategies and inform chemical policy development.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Zibo Hua,Zhiqiang Wei,Ming Liu,Fanjun Guo,Tao You,Zidie Song,Ziqiao Wang,Yudong Huang,Li Liu,Mingqiang Wang
Organic–inorganic composite aerogels represent a novel class of materials that effectively combine the advantages of both organic and inorganic components. Polybenzoxazine (PBz) has emerged as a promising organic alternative due to its structural rigidity, thermal stability, and cost-effectiveness. However, achieving efficient compatibility between PBz and inorganic components remains a significant challenge. In this study, inspired by the structure of diatoms, tannic acid (TA) was introduced as a compatibilizer to stabilize the dispersion of inorganic silica precursors within a PBz solution and improve their compatibility. A uniform structure with minimal phase separation was achieved through a two-step catalytic copolymerization method at room temperature. Benefiting from the inherent rigidity of PBz and superior thermal stability of polysiloxane, the resulting polybenzoxazine/silicon hybridized aerogel (BSA) exhibits a low thermal conductivity of 0.0487 W m−1 K−1, a high compressive strength exceeding 20.0 MPa, and outstanding thermal degradation stability (Td5 of 389.75 °C). This biomimetic and environmentally sustainable approach holds significant potential for advancing the development of next-generation thermal insulation materials.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Haowei Cui,Shuting Fan,Zhuang Zhou,Yaxia Du,Wangxu Chen,Chen Xiang,Jianghua Zhang,Dazhi Wang,Shaoyin Zhang,Pengfei Zhang,Hideto Matsuyama
Tight ultrafiltration (UF) membranes and loose nanofiltration membranes demonstrate significant potential for the efficient separation of dye/salt wastewater mixtures. However, the development of high-performance membranes suitable for industrial-scale production remains a challenge. In this study, a self-supporting tight UF membrane was fabricated for the separation of dyes and salts using a simple phase separation method. A series of carboxylate-functionalized polyaromatic ether sulfone (PAES) polymers with varying carboxylate (−COO − ) content were synthesized as hydrophilic additives to prepare polyethersulfone (PES) blend membranes. The effects of the carboxylate content in the synthesized polymer, additive blend ratio, and dope concentration on the morphology, mechanical strength, hydrophilicity, surface composition, zeta potential, and permeation and rejection performances were systematically investigated. Experimental results revealed that the − COO − content in the polymer additive is the dominant factor for achieving tight UF membranes suitable for dye/salt separation, rather than the dope concentration or blend ratio. The optimal membrane exhibited a desirable pure water permeability of 64 L·m −2 ·h −1 ·bar −1 , with a high rejection rate of 96 % for Congo red dye and a low salt rejection rate of 9.0 % for Na 2 SO 4 . Furthermore, the membrane demonstrates excellent long-term filtration stability and considerable anti-fouling properties against bovine serum albumin solutions, highlighting its promising application potential.
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MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Ying Zhao,Min Wang,Guangming Liao,Yezhen Chen,Yukun Hu,Longyu Tian,Zaijun Lu
With the rapid development of communication technologies, there is an urgent need for materials that simultaneously possess excellent dielectric properties and high thermal stability to ensure efficient signal transmission. In this study, a molecular-level microphase structure modulation strategy is proposed, in which vinyl-functionalized calix[4]arene-modified polysulfone oligomers are used to prepare a series of novel polysulfone-based crosslinked networks (VPSU-VC4As). This method demonstrates remarkable efficiency in enhancing the thermal stability and dielectric properties of the materials. After incorporating 4-tert-Butylcalix[4]arene, the glass transition temperature (T g ) of the thermosets increases from 193°C to 231°C, with T d5 exceeding 350°C and an increased char yield. Meanwhile, the dielectric constant (D k ) and dielectric loss (D f ) of the thermosets are significantly reduced (D k = 2.61 and D f = 4.6 × 10 −3 at 1 GHz). Studies reveal that this improvement is attributed to the nanoporous structure of VC4A and the presence of bulky tert-butyl groups, which increase the free volume of the polymer, reduce its density, and enhance hydrophobicity. The material also exhibits a dielectric breakdown strength of 6.97–7.77 kV/mm and a tensile strength of 27–64 MPa. This work not only confirms the unique advantages of calix[4]arene in developing low-k materials but also further optimizes the dielectric properties of polysulfone through molecular design, providing a new strategy for the development of low-dielectric materials.
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ACS Sustainable Chemistry & Engineering
·
2026
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IF 7.3
Yinghao Wu,Xin Zhao,Chunlei Jiao,Haigang Wang,Ming Wei,Jian Li,Yanjun Xie,Shaoliang Xiao
In recent years, extensive research has been devoted to the synthesis or modification of epoxy resins from biomass-derived feedstocks. However, realizing closed-loop recyclability, using fully renewable raw materials, and preserving key material properties remain open and persistent challenges in epoxy resin development. Herein, we propose a strategy involving the use of biomass-derived tung oil (TO) as the primary raw material and employing dynamic covalent ester-exchange chemistry to prepare a highly mechanically robust, recyclable, and reprocessable tung oil epoxy resin (ECAT-ME) vitrimer. The ECAT-ME vitrimer consists of a covalent adaptable network based on an associative mechanism, exhibiting tensile and compressive strengths of 11.87 and 17.45 MPa, respectively. Following six pulverization–melting–cooling cycles, the material retained tensile and compressive strengths of 6.99 and 8.92 MPa, respectively. This recyclable, high-performance biobased epoxy resin lays the foundation for the sustainable development of functional composites.
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Nanomaterials
·
2026
·Vol. 16
·期 3
·166
·
IF 4.3
Yunfeng Zhang,Cheng Zhao,Zhongqun Li,Dexin Kong,Lingshuai Kong
Peroxymonosulfate (PMS)-based advanced oxidation is often hindered by pH instability and the lack of post-reaction separation. Herein, commercial magnesium hydroxide (Mg(OH)2) is introduced as a multifunctional catalyst to address these limitations. Mg(OH)2effectively catalyzed PMS decomposition via a nonradical pathway dominated by singlet oxygen (1O2) generation, achieving rapid and complete degradation of electron-rich pollutants like bisphenol A (BPA) within 40 min. The system exhibits exceptional pH self-regulation, stabilizing the solution at ~9.8 and maintaining high efficiency across an initial pH range of 3–11. Mechanistic studies confirm1O2as the primary reactive species with a steady-state concentration of 1.67 × 10−12M. The catalyst demonstrates strong resistance to common anions and humic acid, along with excellent stability over four cycles. Furthermore, Mg(OH)2enables in situ flocculation and removal of degradation products. This work highlights Mg(OH)2as an efficient, stable, and multifunctional activator, offering a integrated strategy for practical wastewater treatment.
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WATER RESEARCH
·
2026
·
IF 12.8
Ping Zhang,Chenchen Zhao,Fei Jiang,Chuyang Wu,Tianqi Wang,Xing Xu,Mengjie Wu,Zhanli Chen,Youqin Zou
Green Fenton-like reactions based on monometallic single-atom dual-reaction-center systems have emerged as promising strategies for sustainable water purification owing to their oxidant-free operation and low energy demand. However, their practical deployment is often hindered by limited degradation kinetics and unresolved mechanisms. Here, we report a carbon nitride-supported Fe/Mn bimetallic catalyst composed of Fe nanoclusters and adjacent Mn single atoms (FeMn-CN) that enables ultrafast and self-sustaining pollutant degradation under oxidant-free conditions. The catalyst achieves 99.5% removal of bisphenol A (BPA) within 3 min, setting an ultrahigh rate to date among self-sustaining water purification systems. Combined experimental investigations and density functional theory calculations reveal that the reaction proceeds predominantly via a direct electron-transfer pathway. Fe nanoclusters serve as primary electron acceptors, extracting electrons from BPA without external oxidants, while adjacent Mn single atoms coordinated in Mn-N 4 sites synergistically enhance the electron-accepting capacity of Fe and substantially lower the charge-transfer energy barrier. This atomic-level cooperation endows FeMn-CN with exceptional activity across a broad pH range (pH 2-10), strong tolerance to complex water matrices, high selectivity toward electron-rich contaminants and facile regeneration. Furthermore, continuous-flow reactor tests and life-cycle assessment collectively verify the scalability and superior environmental sustainability of the FeMn-CN process. This work establishes an atomic-level design principle for electron-transfer-dominated self-sustaining remediation materials, advancing the development of next-generation oxidant-free water purification technologies.
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ADVANCED SYNTHESIS & CATALYSIS
·
2026
·Vol. 368
·期 5
·e70307
·
IF 3.7
Wei Rao,Yifan Jiang,Qiong Liu,Junjun Zhang,Die He,Rong Chen
While high-valent copper intermediates are pivotal for efficient peroxydisulfate (PDS) activation, their generation and role in heterogeneous catalysis remain unclear. Herein, we demonstrate that a nonstoichiometric Cu 0.84 Bi 2.08 O 4 catalyst enables the dark activation of PDS via a novel pathway dominated by a surface-bound Cu(III)-peroxo intermediate ( ≡ Cu(III)-O−O−SO 3 ). A suite of spectroscopic and chemical probes revealed that this Cu(III)-peroxo species, along with superoxide radicals (•O 2 − ), acts as the primary oxidant, enabling the highly selective and rapid degradation of bisphenol A (BPA) and other phenolic pollutants. Furthermore, H 2 O 2 generated from PDS hydrolysis synergistically participates in the reaction, accounting for the exceptionally high PDS utilization efficiency of the system. The system exhibits remarkable robustness, maintaining high activity over a wide pH range (4–11) and demonstrating strong resistance to interference from ions. This study elucidates a distinct Cu(III)-peroxo-mediated mechanism and offers a new strategy for designing highly selective catalysts for environmental remediation.
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