POLYMER DEGRADATION AND STABILITY
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2026
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IF 7.4
Haoran Sun,Shufeng Li,Junyu Li,Yuchuan Tian,Yi Liu,Liuchun Zheng
The extensive use of conventional plastics has resulted in severe environmental pollution, driving increasing interest in biodegradable polyesters that combine excellent performance with complete degradability. Poly (butylene succinate- co -butylene adipate) (PBSA), derived from poly (butylene succinate) (PBS) by incorporating flexible butylene adipate (BA) units, exhibits broad potential in composting, packaging, and agricultural films. In this study, a series of PBSA polyester materials with systematically varied BA unit sequence lengths were prepared by fine-tuning the composition of adipic acid (AA) and succinic acid (SA), aiming to investigate the effect of BA sequence length on the properties of PBSA. The results indicate that as the BA sequence length decreases, the crystal growth orientation of PBSA shifts from (020), (021), and other planes to (111), accompanied by increased interlamellar spacing and reduced crystallinity, these changes significantly accelerate the enzymatic degradation rate. Meanwhile, the shortened BA sequence promotes spherulite growth, which restricts the mobility of molecular chains and consequently leads to decreases in elongation at break and impact strength. Specific data show that after the shortening of the BA sequence, the elongation at break of PBSA decreases from 810% to 350%, the impact strength drops from 307.2 J/m to 211.9 J/m, and the degradation mass loss rate increases from 71.2% to 99.5%. This study confirms that regulating the BA sequence length enables the synergistic control of both mechanical properties and degradation performance of PBSA polyester materials.
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Journal of Environmental Sciences
·
2026
·
IF 6.3
Lihui Zhao,Can Jin,He Liu,Zhaozhe Yang,Yupeng Liu
Bisphenol A (BPA), a widespread endocrine-disrupting compound, necessitates efficient activation of peroxymonosulfate (PMS) for its degradation. Conventional carbon-based catalysts frequently exhibit limited efficiency, poor stability, and potential environmental risks. Bamboo-derived porous carbon material (BCM) and bamboo-derived porous carbon material loaded with Fe (BCM-Fe) serve as effective catalysts for activating PMS to degrade BPA. The BCM/PMS system achieved a BPA removal efficiency of 94.44 % within 150 minutes, while the BCM-Fe/PMS system attained 97.8 %. Quenching experiments and electron paramagnetic resonance (EPR) analysis identified non-radical singlet oxygen (¹O₂) as the dominant reactive species. Density functional theory (DFT) calculations demonstrated that atomically dispersed Fe species on BCM-Fe significantly enhanced PMS adsorption energy and activation kinetics compared to BCM. Both catalysts exhibited excellent reusability, confirming their potential as practical and sustainable catalysts. This study provides fundamental insights for designing efficient, environmentally benign carbon-based catalysts for advanced oxidation processes.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Defang Liu,Chao Wang,Zhuo Cheng,Qiyao Zhao,Xuelian Zeng,Chiyu Wen,Jing Zhao,Guoxiang Zhu,Jun Wang,Yongfa Zhu
p-Nitrophenol (PNP), a widely used chemical intermediate, exhibits stubborn resistance to conventional oxidation treatments due to its high toxicity, electron-deficient nature, and the high stability of its aromatic ring. To address the bottlenecks of low mineralization efficiency of PNP by traditional ozonation and the limited spectral utilization of conventional PCO systems. Herein, we constructed a photocatalytic–ozone synergistic system based on perylene diimide-based organic polymers (Urea-PDI/O 3 /vis). Owing to the broad spectral response of the polymers, the light-responsive range of this coupled system can be extended to the near-infrared region up to 700 nm. The degradation rate of PNP in this system is 25 times higher than that in the photocatalytic system alone and 2.42 times greater than that in the ozone system alone. More importantly, the mineralization efficiency of PNP is significantly enhanced in the Urea-PDI/O 3 /vis, reaching a value three times higher than that of the traditional ozone system. Mechanism investigation reveals that the denitrification efficiency for PNP is comparable between the ozonation and photocatalytic–ozone systems. However, the photocatalytic–ozone process demonstrates a marked superiority in the subsequent ring cleavage and mineralization via decarboxylation of small-molecular organic acids. In contrast to the direct ozonation mechanism dominated by electrophilic and dipolar addition reactions, the Urea-PDI/O 3 /vis efficiently utilizes photogenerated electrons to convert ozone into hydroxyl radicals in large quantities, which enables highly efficient mineralization of PNP. This study will provide new insights into the removal of PNP in water.
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WATER RESEARCH
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2026
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IF 12.4
Junye Ma,Xuan Li,Wanchao Yu,Xingyi He,Baoliang Chen,Chiheng Chu
Electron transfer coupled to molecular O 2 activation drives ROS formation and underpins pollutant removal processes. Yet in heterogeneous matrices electron transfer is typically confined to nano-micrometer distances, which limits ROS efficacy. Here, we show that black carbon (BC) can bridge spatial gaps between electron source and O 2 , enabling centimeter-scale ROS generation. Using a solidified agarose reactor that mimics restricted transport, BC mediated electron transfer from zero-valent iron (ZVI) to distal zones, producing hydroxyl radicals ( • OH) and hydrogen peroxide (H 2 O 2 ) up to 18 mm from the ZVI source within 30-day experimental period; H 2 O 2 reached 28.6 ± 3.6 µM and • OH reached 103.3 ± 3.2 nM with rice-straw BC (300 °C) at 3 mm and then plateaued beyond 12 mm. Mechanistic analyses revealed that surface redox-active functionalities, rather than the polyaromatic conductive backbone, control BC’s electron-shuttling performance. Consistent with this mechanism, low-temperature BCs (≤500 °C), which retain more oxygenated surface moieties, gave up to 61.0-fold higher ROS yields than high-temperature (900 °C) samples. Furthermore, chemical oxidation of high-temperature BC reinstated these oxygenated groups and increased its electron-accepting and -donating capacities (to as high as 2.81 mmol e⁻ g -1 and 1.59 mmol e⁻ g -1 ), producing corresponding rises in ROS output. Because ROS were generated over an expanded spatial region, BC/ZVI composites accelerated degradation rates of phenol, bisphenol A, and diuron by 5.4–9.8-fold. Overall, BC functions as an effective electron shuttle that extends interfacial redox reactivity across centimeter scales, offering a sustainable approach to overcome electron-transport limitations in environmental remediation.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.7
Haoxiang Cui,Yu Zhang,Peng Wei,Chaorui Xue,Suping Jia,Caihong Hao,Xiangqian Fan,Ning Li,Jinlong Yang,Shengliang Hu
This study fabricated a floatable silicate-based photothermal porous composite using nano-Fe, nano-TiO 2 , carbon dots, cenospheres, NaHCO 3 , and bentonite as main raw materials. Serving as an efficient solar-driven interfacial purifier (SIP) for phenolic wastewater, it integrates photocatalysis and micro-electrolysis, with excellent buoyancy, thermal insulation, light absorption, water uptake, and reduced water evaporation enthalpy—enabling a high water evaporation rate of 1.67 kg•m −2 •h −1 . Ball-milling of nano-Fe, nano-TiO 2 , and carbon dots optimized the composited powder's surface area and metallic iron content for superior micro-electrolysis. The coupled photocatalysis/micro-electrolysis generated diverse active radicals to degrade phenol via multiple pathways, while water evaporation enhanced these reactions by inducing high-speed flow around the micropore's mouth. Under 1.0 kW•m −2 solar irradiation for 4 h, the condensate achieved 90.7% phenol removal and 82.36% total organic carbon (TOC) removal. The floating SIP also purified residual water simultaneously, reaching an overall TOC removal ratio of 78.28% (4.9 times that of the separating SIP's 19.6%) and effectively removing hazardous intermediates under the convection flow. Additionally, the floating SIP performed well in purifying various phenolic pollutants. This floating solar-driven interfacial purification system would contribute to a novel strategy for high-quality treatment of the phenolic wastewater.
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COMPOSITES PART B-ENGINEERING
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2026
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IF 14.2
Zhaoping Jia,Yufan Zhou,Ruiyao Xiao,Jiandu Lei,Jing Liu
Layered double hydroxides (LDHs) have emerged as promising photocatalysts for effective pollutant degradation in wastewater treatment. In this study, a visible-light-responsive ZnO/In 2 O 3 composite photocatalyst incorporated with biomass-derived carbon ( [email protected] ) was synthesized via controlled calcination of Zn/In-containing binary LDH precursors with biomass carbon sources. The optimized [email protected] composite demonstrated remarkable performance in synergistic adsorption and photocatalytic degradation of crystal violet (CV), achieving high degradation efficiency (97.46 %) for 2000 mg/L CV under 460 nm LED light - significantly superior to the 54.79 % efficiency of pristine ZnIn-LDO. The photodegradation kinetic constant of [email protected] was 8.4 times higher than that of ZnIn-LDO. Systematic characterization revealed that the optimal BC incorporation engineered the optical and surface properties: it narrowed the bandgap, enhanced visible-light absorption, increased specific surface area, and most importantly, drastically promoted the separation and transfer of photogenerated carriers. Mechanistic studies identified that the improved charge dynamics drive an efficient oxygen reduction pathway, where superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH), generated via H 2 O 2 intermediates, serve as the dominant active species. The degradation intermediates exhibited reduced phytotoxicity. This work provides a novel strategy for developing high-performance LDH-based photocatalysts by coupling biomass carbon to optimize interfacial charge separation and reaction kinetics.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2026
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IF 4.6
Fangzhou Wu,Yonglei Xing,Huijuan Liu,Xiaoyong Jin,Gang Ni
Peroxymonosulfate (PMS)–based advanced oxidation processes (AOPs) are promising for pollutant removal, whereas metal-doped carbons risk ion leaching. Here we report a metal-free selenium–nitrogen co-doped porous carbon (Se–N/C) that efficiently activates PMS for phenol (Ph) degradation. Selenium was chosen for its larger atomic radius and high polarizability, which modulate electronic structure and create active sites. Se–N/C achieved complete removal of parent Ph (Ph peak disappearance) within 10 min with a total organic carbon (TOC) reduction of 52 %, and a pseudo-first-order rate constant about twentyfold higher than nitrogen-doped carbon. Radical scavenging tests and electron paramagnetic resonance (EPR) confirm a dual pathway involving radical (O 2 •− ) and non-radical ( 1 O 2 ) species. Density functional theory (DFT) indicates that co-doping tailors the electronic configuration, strengthens PMS adsorption (adsorption energy −3.07 eV), and enhances electron transfer. The catalyst remains active in the presence of common anions (SO 4 2− , Cl − , NO 3 − , and H 2 PO 4 − ) and humic acid, evidencing environmental tolerance. X-ray photoelectron spectroscopy and Raman spectroscopy identify graphitic nitrogen and C–Se–C as key centers, while selenium's antioxidative character supports cycling stability. This work provides a scalable, environmentally benign route for wastewater treatment and clarifies structure–activity relationships in PMS activation.
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Desalination and Water Treatment
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2026
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IF 3.4
Yantao Zhu,Jianping Sun,Ying Xie,Qiyu Liu,Fu Zhu,Yetong Chen,Zeyu Wang,Manni Li,Hassaan Ahmad Butt,Huizhong Chi
Cu 0 - activated peroxymonosulfate (PMS) is a promising advanced oxidation process for the removal of pharmaceuticals and personal care products, yet its performance is often limited by inefficient Cu(II)/Cu(I) redox cycling as well as the low steady-state availability of reactive copper species. Here, we constructed a Cu 0 /HA/NCP/PMS system by integrating hydroxylamine as a reductant and neocuproine as a Cu(I) - complexing ligand to intensify naproxen degradation and investigate the underlying activation pathway. Under typical conditions, the synergistic combination of HA and NCP caused NPX removal to enable 98.57% within 6 min. This is significantly higher than those in Cu 0 /PMS, Cu 0 /NCP/PMS, and Cu 0 /HA/PMS. The system maintained high efficiency across pH 3.0 ~ 7.0. Scavenging tests and nitrobenzene probing indicated that ⋅ O H / S O 4 ⋅ − pathways were not dominant, whereas benzoic acid caused only moderate inhibition, collectively supporting a non-radical pathway. Spectroscopic and LC-MS evidence revealed a ligand-stabilized high-valent copper oxidant, with characteristic absorption at 358 nm and a signal at m/z 479 assigned to [Cu(III) - (NCP) 2 ] 3+ . This work provides a mechanistically grounded “reduction and complexation” strategy to overcome Cu - based persulfate activation bottlenecks and achieve rapid, pH - resilient degradation of NPX.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122374
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IF 7.5
Feng Chen,Xiang Xia,Wei Chen,Wei Liu,Xinxin Liao,Lei Xiong,Yanqiao Jin
Refining lignin and its derivatives into biofuels and fine chemicals via catalytic transfer hydrogenation (CTH) has gained significant attention for its potential in utilizing renewable resources and reducing fossil fuel dependence. Herein, a series of bimetallic Cu-Co catalysts with varying metal ratios are synthesized via a facile hydrothermal method and successfully applied in the efficient CTH of the α-O−4 model compound benzyl phenyl ether (BPE) and corncob lignin. Cu 0.5 Co 1 @CN has the best performance among catalysts with different CuCo ratios due to the formation of the CuCo 2 O 4 phase which provides more acid sites and hydrogen adsorption/desorption sites. Under the reaction conditions of 190 °C in isopropanol, the Cu 0.5 Co 1 @CN catalyst achieves the complete conversion of BPE to cyclohexanol and toluene, and demonstrates excellent CTH performance towards other α-O−4 and β-O−4 model compounds. This catalyst simultaneously enables the demethoxylation and hydrogenation of phenolic compounds like guaiacol. Furthermore, Cu 0.5 Co 1 @CN efficiently converts corncob lignin, producing a high proportion of phenolic compounds in the resulting liquid (88.26%), while preventing the aromatic hydrocarbons from being hydrogenated. Overall, this work provides a novel and effective strategy for transforming lignin into high-value products.
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MICROCHIMICA ACTA
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2026
·Vol. 193
·期 4
·245
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IF 5.4
Shao Yanming,Rong Xuan,Zhao Huanhuan,Feng Huanran,Ma Wenli,Peng Wenli,Gao Guohao,Yang Xianyu,Jiao Ziwei
A fluorescent molecularly imprinted polymer (FMIP) sensor for the selective detection of bisphenol A (BPA) was constructed based on surface-initiated reversible addition-fragmentation chain transfer (SI-RAFT) polymerization with mesoporous silica (mSiO 2 ) as the carrier. N-allyl-4-ethylenediamine-1, 8-naphthalimide was used as the fluorescent functional monomer, with mSiO 2 as the carrier. The high specific surface area of the mSiO 2 carrier provides more imprinting sites for the FMIP, thereby effectively enhancing the recognition efficiency of the resulting imprinted polymer. Azide groups were initially grafted onto the mSiO 2 surface. Subsequently, an alkynyl-functionalized RAFT agent was introduced via a copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. The FMIP was then synthesized by RAFT polymerization using BPA as the template and methacrylic acid (MAA) as the functional monomer. Upon rebinding of the template BPA to the imprinting cavities, the fluorescence of the MIP-capped N-allyl-4-ethylenediamine-1, 8-naphthalimide was efficiently quenched. The ratio of fluorescence intensity exhibited a linear response to the concentrations of BPA ranging from 5 to 80 µM, with a detection limit of 0.43 µM. Moreover, the FMIP sensor was successfully applied to detect BPA in real samples, with recoveries ranging from 96.55% to 102.25% and relative standard deviations (RSDs) of 0.4%-1.57%. The results indicate that the prepared FMIP sensor shows great potential for the detection of BPA in environmental media.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Ange Zhu,Jingkang Gao,Yunjun Mei,Mengxi Cao,Fengjie Chen,Bolei Chen,Yong Liang,Yawei Wang
Photocatalysis is a promising strategy for environmental remediation but is commonly limited by inefficient charge separation and slow interfacial reaction kinetics. Herein, an aerosolized microdroplet–coupled semiconductor photocatalytic system is developed to enhance photocatalytic performance through interfacial microenvironment regulation. Dispersing TiO₂ nanoparticles into aerosolized microdroplets enables synergistic coupling between the strong built-in electric field at the gas–liquid interface and the localized interfacial electric field at the semiconductor–water interface, which significantly promotes photogenerated charge separation and hydroxyl radical generation. The microdroplet-assisted system achieved a •OH generation rate of 0.31 min⁻¹ within 60 min and a methylene blue degradation rate of 0.16 min⁻¹ within 20 min, markedly outperforming the bulk-phase photocatalytic system (0.17 and 0.11 min⁻¹, respectively). The enhancement strategy was further validated using multiple semiconductor photocatalysts, including ZnO, CuO, Fe₂O₃, and ZrO₂, all of which exhibited improved photocatalytic activity under microdroplet-assisted conditions. In addition, efficient pollutant degradation was achieved in real river water samples, demonstrating good system stability and practical applicability. This work highlights microdroplet-induced interfacial electric field coupling as an effective approach for boosting photocatalytic efficiency, offering new insights for the design of advanced photocatalytic systems for environmental applications.
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 11
·646
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IF 3.5
Xiao Yongbo,Gao Yanjiao,Bai Fan,Xiao Jing
The increasing contamination of aquatic environments by antibiotics calls for efficient, economical, and environmentally sustainable remediation technologies. This study presents a zero-valent iron (ZVI)-activated periodate (IO 4 − ) advanced oxidation system for the degradation of oxytetracycline (OTC) in water. Under optimized conditions (pH = 3, ZVI = 1.64 g/L, IO 4 − = 1.97 mM), the ZVI/IO 4 − system achieved 81.16% OTC removal. Notably, coupling with UV irradiation enabled complete OTC degradation within 50 min, demonstrating substantial enhancement over the standalone system. Mechanistic investigations revealed that IO 3 • , 1 O 2 , and O 2 •− were the dominant reactive species, and three degradation pathways were proposed based on LC–MS analysis. The system exhibited excellent performance in real water matrices, achieving 78.0% and 71.9% OTC removal in tap water and lake water, respectively, along with strong tolerance to coexisting ions and humic acid. Importantly, the ZVI catalyst retained 96.4% of its initial activity after five consecutive cycles, significantly reducing operational costs and secondary pollution risks. This work provides an efficient, stable, and cost-effective treatment strategy for antibiotic-contaminated water, holding strong promise for practical engineering applications.
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