Materials Today Chemistry
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2026
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IF 7.4
Ziyi Wang,Fenglong Chen,Wei Fan,Yuzhe Guo,Yingnuo Liu,Jiaxin Li,Litao Tian,Rui Lu,Yulun Xie,Jingmei Xu
The composite membranes were fabricated using electrospinning technology. • 1/SPCeS/1 showed the highest proton conductivity (224.27 mS cm −1 at 90 °C). • 1/SPCeS/1 showed good mechanical properties and oxidation stability. In this work, sulfonated poly (arylene ether ketone sulfone) (SPAEKS) polymers were prepared via condensation polymerization, and sulfonated dopamine-modified cerium oxide (SPD@CeO 2 ) nanoparticles were integrated into the polymer matrix. An array of composite membranes was fabricated using electrospinning. The fillers and composite membranes were analyzed through various characterization methods. The obtained 1/SPCeS/1 (with 1 wt% SPD@CeO 2 added to the spinning solution) fiber composite membrane exhibited good performance. With the intrinsic free radical scavenging effect of CeO 2 and the synergistic effect of sulfonated dopamine, the oxidative stability of 1/SPCeS/1 reached 97.65%, the proton conductivity was 224.27 mS cm −1 (90 °C, 100% RH), and the peak power density reached 794.92 mW cm −2 , which were all verified to be superior to the corresponding values of the pure membrane. The results indicated that the combination of functional nanoparticles and electrospinning technology effectively enhanced the overall performance of the proton exchange membrane. This strategy fully aligns with the core principles of green chemistry, namely using low-toxicity raw materials, adopting mild and energy-saving preparation routes, reducing harmful organic solvents, and providing a sustainable and environmentally friendly alternative to conventional perfluorinated proton exchange membranes. Download: Download high-res image (305KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yu-Hang Gu,Kang Wu,Wei Mao,Jie-Xin Wang
Rotating packed bed (RPB) is firstly used for chemical synthesis of heterojunction. • ZnO/ZIF-8 heterojunctions achieve a record catalytic activity in PLA methanolysis. • RPB product has more oxygen vacancies and stronger Lewis acid than counterpart. • Lewis acid of ZnO and high surface area of ZIF-8 endow catalyst high activity. • Excellent activity covers various real-life polyester wastes and their mixtures. The chemical recycling of plastic is crucial for achieving a circular economy, and developing heterogeneous catalysts that combine high activity with structural stability represents a pivotal challenge. Herein, a high-gravity-assisted approach was proposed to efficiently construct ZnO/ZIF-8 (RPB-ZnO/ZIF-8) nanoheterojunctions enriched with oxygen vacancies (Ov) for polylactic acid (PLA) methanolysis to methyl lactate (MeLA). Compared to the stirred tank (ST), high-gravity synthesis drastically reduces coordination reaction time from 1 h to an extremely short time (< 1 s). The as-prepared RPB-ZnO/ZIF-8 catalyst achieved 100% PLA conversion at 100 °C in 0.5 h with a MeLA yield of 95.6%, reaching the highest activity compared to previous works so far. More importantly, it demonstrated excellent cycle stability, maintaining >92% of its initial activity after five cycles. Catalytic mechanistic investigations reveal that the Ov increases Lewis acidity of the heterojunction surface, thereby facilitating the reactants adsorption and activation, which leads to a reduction in the energy barrier for PLA methanolysis. Furthermore, RPB-ZnO/ZIF-8 catalyzes the depolymerization of other plastics effectively (e.g., polyethylene terephthalate and polycarbonate) and demonstrates remarkable versatility in converting various real-life polyester wastes and their mixtures. This study presents an efficient strategy for advancements in sustainable plastic recycling.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Meng You,Chao Xia,Bo Jin,Qianlong Sun,Bingbing Yuan,Ping Hu,Xinru Hu,Siyi Wang,Jianqiang Meng
Developing nanofiltration (NF) membranes that simultaneously achieve high water permeance and selectivity remains a fundamental challenge due to their inherent permeability-selectivity trade-off. Herein, we report a monomer diffusion regulation strategy using amphiphilic sulfonated resorcinarenes (SRA) to fabricate high-performance polyesteramide NF membranes. Incorporated SRAs lower interfacial tension, facilitate PIP diffusion, and self-assemble into physical template aggregates. Driven by the kinetic competition between SRA hydroxyl groups and PIP amines for TMC stemming from their reactivity difference, SRAs temporarily retard crosslinking at SRA-rich sites while their amphiphilicity directs PIP toward adjacent regions to resume polymerization. This kinetic competition, combined with post-encapsulation collapse of SRA assemblies, yields polyesteramide membranes with characteristic crater-like structures and abundant nanovoids within the selective layer. These features increase the effective permeable area and reduce mass transfer resistance. The optimized membrane delivers a water permeance of 26.3 L m −2 h −1 bar −1 , with Na 2 SO 4 rejection of 98.87%, and a Cl − /SO 4 2− selectivity factor of 409.4 in mixed salt feed (1000 ppm Na 2 SO 4 +1000 ppm NaCl). SRA-PIP/TMC membranes achieve improved rejection toward organic micropollutants (OMPs), especially negatively charged hydrophobic species such as ofloxacin and chloroquine phosphate, through the synergistic effects of size sieving, Donnan repulsion, and host-guest inclusion within resorcinarene cavities. Benefiting from ester linkages, the membranes possess good chlorine resistance. This work demonstrates the potential of amphiphilic macrocycle co-monomers for regulating polymerization toward the preparation of high-performance NF membranes for water purification and precise molecular separation.
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Journal of Water Process Engineering
·
2026
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IF 6.6
Jiaqi Yang,Zhenxin Wang,Xun Jiao,Jing Xu,Xiangkang Zeng,Shengjiong Yang,Gen Wang
Oxidative polymerization is an unrecognized yet critical pathway in CH 3 CO 3 • -mediated AOPs. • Polymerization contributes ∼20–65% to phenolics removal depending on substituent merits. • CH 3 CO 3 • -driven polymerization process works efficiently in saline and real coking wastewater. • Recovered polymers can be valorized as functional porous carbon materials with high surface area. The acetylperoxyl radical (CH 3 CO 3 • )-based advanced oxidation processes (AOPs) have been widely employed for organic contaminant elimination, with existing studies predominantly attributing pollutant removal to mineralization or fragmentation pathways. However, the contribution of oxidative polymerization triggered by CH 3 CO 3 • has been systematically overlooked. Herein, by taking the widely-studied CH 3 CO 3 • -based oxidation system (i.e., Co 2+ /PAA), we demonstrated that oxidative polymerization constitutes a critical pathway, accounting for 12.2–61.4% of phenolic contaminants removal in CH 3 CO 3 • -driven AOPs depending on the substituent merits. Through systematic analysis of the transformation of phenol during the oxidation and comprehensive characterization of recovered solid polymers, we confirmed the formation of solid-state polymers in the Co 2+ /PAA system. Thermodynamic calculations further validate the feasibility of polymerization mechanisms, identifying hydrogen abstraction (HAA) as the predominant initiation step. Notably, this oxidative polymerization phenomenon persists in complex aqueous matrices and real coking wastewater systems, demonstrating environmental relevance. Importantly, the harvested polymeric solids exhibit potential for valorization as precursor materials for porous carbon synthesis, achieving surface areas as high as 635.7 m 2 /g with promising catalytic performance. This work uncovers a previously neglected but significant polymerization pathway in the CH 3 CO 3 • -based AOPs, establishing a sustainable avenue for phenolic wastewater purification. Oxidative polymerization, which has been largely overlooked in CH 3 CO 3 • -mediated AOPs, constitutes a critical route for removing electron-rich phenolic compounds, accounting for ∼20–65% of contaminant elimination depending on substituent characteristics. The CH 3 CO 3 • -driven polymerization process proves effective for treating phenolic industrial wastewater. It enables simultaneous phenolic contaminant removal and the recovery of solid polymer products, which can be further valorized as precursors for porous functional carbon materials. Download: Download high-res image (171KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Dongcheng Li,Shenghu Wang,Huanji Song,Xianying Xu,Shihao Yang,Yuyang Dong,Yan Luo,Weiyang Lv
Efficient and sustainable Fenton-like systems are highly desired for degrading persistent pollutants. However, their development is often hindered by the slow redox kinetics and poor durability of single active sites in conventional metal-based catalysts. Herein, we developed a bimetallic Fe/Cu catalyst (FeCu-BN) with highly dispersed metal sites anchored on boron nitride (BN), which offered boosted activity and stability via the cooperative redox cycles between Fe and Cu sites. The FeCu-BN catalyst achieved nearly 100% removal of sulfamethoxazole (SMX) within 20 min through activating peroxymonosulfate (PMS), with a rate constant of 0.421 min − 1 significantly surpassing those of its monometallic counterparts and other advanced catalysts. Systematic experiments and theoretical calculations revealed that the Cu sites not only optimized the electronic structure of the Fe sites but also provided electrons extracted from pollutants to promote the Fe 2+ /Fe 3+ cycle, thereby triggering concerted radical and non-radical reactions for SMX elimination. Consequently, the FeCu-BN/PMS catalytic system operated stably over a wide pH range and exhibited exceptional tolerance to various inorganic ions and complex aqueous matrices. Furthermore, in a continuous flow membrane reactor, the system maintained efficient SMX removal over 20 h without significant performance loss. This work uncovered the synergistic redox cycling mechanism in bimetallic catalysts and offered valuable insights for designing dual-site catalysts for environmental remediation.
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Journal of Water Process Engineering
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2026
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IF 6.6
Limin Chen,Jinfang Hu,Yulai He,Juncang Wang,Ye Hong,Wenjin Chen
The advancement of cost-effective, non-metal-doped catalysts is essential for the effective degradation of aquatic contaminants. In this study, hollow carbon spheres (HCS) were synthesized from glucose using the soft stencil method. These HCS were subsequently co-doped with nitrogen and phosphorus using ammonium dihydrogen phosphate ((NH 4 ) 2 HPO 4 ) as the doping source, resulting in N, P co-doped hollow carbon spheres (NPHCS). These NPHCS served as a mediator for peroxymonosulfate (PMS) activation, applied in the degradation of tetracycline hydrochloride (TC). The unique architecture of NPHCS, characterized by hollow 3D cavities and mesoporous channels, established a spatially confined environment that markedly increased total surface exposure and number of reactive centers. This structure facilitated rapid adsorption and activation of PMS on the catalyst surface, generating reactive oxygen species more efficiently compared to unrestricted nitrogen and phosphorus-doped carbon nanosheets (NPCN) and carbon black (NPCB). The confined nano-environment of the hollow cavities shortened mass transfer pathways, substantially improving the contact and catalytic efficiency between active oxygen species and pollutants. Consequently, over 90% of TC was degraded within 20 min. This research offers a novel insight into the design of low-cost, N, P co-doped catalytic nanoreactors for improving the catalytic efficiency in non-metal-based systems.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Hang Xu,Wenhui Zhang,Sicheng Zhu,Bingyu Shen,Xinyu Li,Bingqi Jiang,Lianhong Wang,Philippe F.X. Corvini,Max M. Häggblom,Rong Ji
Transformation of bisphenol compounds during nitrogen removal processes in wastewater treatment plants, along with the key microbial taxa associated with this transformation, remains poorly understood. In this study, we examined the transformation of a series of alkylbisphenols (ABPs; bisphenol A, bisphenol E, and bisphenol F) and sulfonylbisphenol (bisphenol S) in an enriched nitrifying activated sludge (NAS). While bisphenol S was persistent in the NAS, the ABPs were effectively transformed; however, 14 C-isotope tracing revealed that the majority of BPA (presumably also other ABPs) was retained in the NAS as transformable intermediates and potentially toxic nitroaromatic compounds, with minor mineralization (< 1 %). In total, nine transformation products were identified, including nitrated aromatic compounds and single-ring phenolic compounds. Ammonia‑oxidizing bacteria (AOB), primarily Nitrosomonas , drove abiotic ABP transformation to persistent nitroaromatic products. Heterotrophic bacteria, such as Sphingomonas , Methyloterena , and Comamonas , initiated ABP transformation via type II ipso- hydroxylation and oxidative cleavage, and also mineralized the intermediates formed through the AOB-mediated dealkylative nitration. By integrating batch experiments, HPLC–QTOF-MS/MS, 14 C-tracing, and 16S rRNA gene sequencing, we provide a comprehensive understanding of these complementary transformation pathways and the key microbial taxa involved. Our findings highlight the significant role of AOB-mediated abiotic reactions in ABP transformation, and alarmingly revealed that the traditional nitrogen removal processes using NAS may produce toxic persistent nitroaromatic compounds, thereby leading to unexpected environmental risks.
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JOURNAL OF CHROMATOGRAPHY A
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2026
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IF 4
Xiaohua Xu,Lin Hao,Weihua Liu,Qianqian Wang,Shuofeng Li,Chun Wang,Qiuhua Wu,Zhi Wang
In this study, a low-cost octaphenylcyclotetrasiloxane (OPS) was used as the structural building block to prepare an organic-inorganic hybrid porous material (OPS-OIHM) via a facile Scholl coupling reaction. The material exhibits high specific surface area, and possesses excellent stability. OPS-OIHM demonstrates strong affinity for phenolic compounds through the synergistic effects of π-π stacking, hydrophobic interactions, and hydrogen bonding. A method involving OPS-OIHM-based solid-phase extraction, followed by HPLC detection, was established to analyze chlorophenols (including 2-chlorophenol, bisphenol A, 2,6-dichlorophenol, 2,4-dichlorophenol, and p‑tert-butylphenol) in various samples such as water, juice, and milk. The method achieved detection limits of 0.02–0.08 ng mL⁻ 1 in water, 0.10–0.22 ng mL⁻ 1 in juice, and 0.28–0.60 ng mL⁻ 1 in milk. Linear responses were observed across the following concentration ranges: 0.06–100 ng mL⁻ 1 , 0.30–100 ng mL⁻ 1 , and 0.84–500 ng mL⁻ 1 . The recoveries of spiked water, juice and milk were 80.0%–120.3%, 82.0%–116.0% and 80.8%–113.6%, respectively. The relative standard deviations were less than 7.43%. This work provides an efficient and reliable approach for the analysis of trace phenolic pollutants in complex samples, showing promising potential for applications in environmental monitoring and food safety.
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Engineering
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2026
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IF 12.2
Chuanchuan Zhao,Xuehui Liu,Xinhao Chang,Shimei Xu,Xiang-Xin Xiao
The recycling of waste wind turbine blades is the most important part of the green, low-carbon, and circular development of the wind power industry chain. The matrix polymers in wind turbine blades are mostly epoxy resin (EP) characterized by a stable crosslinked structure, which is insoluble, non-melting, and resistant to natural degradation. Although some advanced chemical recycling methods demonstrate the ability to structurally deconstruct EP into value-retained oligomers and show great potential for upcycling, problems such as harsh reaction conditions and low utilization and value addition of the degraded products (DEP) still exist. Herein, we present an innovative catalytic oxidation system in which EP is completely degraded using only 4 wt% catalyst at 100 °C for 6 h. Furthermore, this methodology enables the selective cleavage of C‒O bonds in EP, yielding hydroxy-rich DEP. DEP can be completely and directly used as adhesives with an adhesive strength of 10.34 MPa, which exceeds that of commercially available adhesives and some adhesives prepared by copolymerization of fresh raw materials. Moreover, this adhesive is also resistant to acids and alkalis and is easy to remove. In addition, the reaction reagents, catalysts, and reinforcing fibers in the composites within the degradation system can all be recovered. In particular, the recovered catalysts can be recycled up to 5 times. This gentle, efficient, and green system not only has important reference significance for the sustainable development of the wind power industry but also provides new ideas for the design of high-strength adhesives.
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ACS Sustainable Chemistry & Engineering
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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
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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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FOOD CHEMISTRY
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2026
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IF 10.4
Ziyi Yin,Xiaoqing Wang,Qianqian Wang,Chun Wang,Yujie Ma,Mingming Xu,Qiuhua Wu
Phenolic endocrine disrupting compounds (PEDCs) are associated with significant health hazards, necessitating the development of highly sensitive analytical detection methodologies. This study reported a novel covalent organic framework (DT-COF) by strategically incorporating hydroxyl-rich building blocks into π-conjugated architectures. DT-COF demonstrated enhanced adsorption effect for PEDCs through the multiple hydrogen bond binding and multiple π-π interaction sites. By using DT-COF as a solid phase extraction adsorbent and integrating it with high performance liquid chromatography tandem the mass spectrometry, a robust analytical platform was provided to determine the trace PEDCs in green tea beverages, bottled water, and milk. Under optimized conditions, the method exhibited excellent analytical performance, including a low detection limit (0.018–0.219 ng mL −1 ), good recovery rates (86.3–109%), and outstanding reproducibility (RSDs ≤6.6%). This study achieves dual objectives: enabling sensitive detection of PEDCs contaminants while pioneering functional COF material development.
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