APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Hongyun Ren,Xia Qin,Xujie Lan,Xingwei Tao,Shan Wang,Mai Wang,Xiao Guo
This study explores the intrinsic photocatalytic activity of viscose-based activated carbon fibers (ACFs) and their synergistic adsorption-photocatalysis mechanism under visible light. Two commercial ACFs were pretreated, with one further oxidized using nitric acid. Tetracycline (TC) served as the model pollutant. Results revealed that adsorption capacity was positively correlated with defect density, while photocatalytic performance depended on the sp 2 -hybridized carbon content. After 90 min, TC removal efficiencies for adsorption and combined adsorption-photocatalysis were 17.6 %/91.3 % and 7.3 %/85.5 %, respectively. Excellent mineralization was also achieved, with COD/TOC removal rates of 85.1 %/85.4 % and 73.4 %/75 %. ACFs maintained high TC degradation over a wide pH range (3–9), and the superior sample achieved 99.4 % TC removal within 20 min at an aeration rate of 1.0 L/min. OH and O 2 − were identified as the dominant reactive oxygen species. The materials exhibited excellent regeneration capability through high-temperature calcination. Practical application tests confirmed their effectiveness under sunlight and against a range of organic pollutants. These results highlight the potential of pristine viscose-based ACFs as low-cost, sustainable materials for advanced wastewater treatment.
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高影响因子
Journal of Environmental Sciences
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2025
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IF 6.3
Jia-Wei Song,Ju-Xiang Chen,Wen-Hai Chu,Yu-Qiong Gao,Nai-Yun Gao
Conventional treatment methods struggle to effectively eliminate sulfamethoxazole (SMX) from wastewater due to its persistent aromatic structure and sulfonamide moiety, while existing advanced oxidation processes often suffer from high energy consumption and inadequate degradation pathway control. This study demonstrates an advanced approach for SMX degradation in aqueous systems through dielectric barrier discharge (DBD) plasma technology synergistically integrated with COMSOL multiphysics simulation and particle swarm optimization-support vector machine (PSO-SVM) modeling. Computational simulations revealed that the DBD plasma generates a diffuse arc (D-A) mode electric field with Penning ionization effects, where primary reactive species formation predominantly occurs within the sheath layer. Under optimized operational parameters (input power: 50 W, pH 7, conductivity: 3.16 μS/cm, initial concentration: 10 mg/L, the carrier gas: air), the system achieved an exceptional SMX removal efficiency of 99.82 %, corresponding to a constant reaction rate of 0.3087 min −1 . The machine learning-optimized process simultaneously enhanced energy yield by 18.11 mg/kW·h and improved energy utilization efficiency by 15.11%. Notably, the system maintained robust performance (>75% SMX removal) in the presence of competing inorganic anions (NO 3 − , HCO 3 − and Cl − ). Mechanistic investigations combining DFT, EPR and UPLC-MS/MS elucidated that •OH, O 2 •− , 1 O 2 , •NO 2 and ONOOH preferentially attack the electrophilic N(4), N(7), and N(17) sites, initiating sequential diazotization and nitration pathways. Practical validation using hospital wastewater demonstrated significant removal of COD (56.17 %) and TOC (40.16 %), while effectively suppressing antimicrobial resistance genes. This work establishes PSO-SVM optimized DBD plasma as a sustainable and intelligent solution for pharmaceutical wastewater remediation.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Ouyang Haibo,Chen Zihao,Li Cuiyan,Shen Tianzhan,Wang Jintao,Chen Qianqian,Gao Ruinan
To address the rapid volatilization and decomposition of SiO 2 at ultra-high temperatures, a silicon-free strategy has been proposed for the design of C/C-(HfZrTi)C composites. These composites were fabricated using a precursor infiltration and pyrolysis method that employed metal chloride and furfuryl alcohol as precursors. The resulting C/C-(HfZrTi)C composites demonstrated exceptional ablation resistance, with a mass ablation rate of −0.567 mg/s and a linear ablation rate of 1.433 μm/s when exposed to a 2.4 MW/m² oxyacetylene flame. This enhanced ablation resistance is attributed to the formation of liquid TiO 2 during the ablation process. The liquid TiO 2 can penetrate oxide scales through capillary action, forming an oxygen diffusion barrier that inhibits the oxidation of the composites. Additionally, it can bond with solid (HfZr)O 2 particles, resulting in the formation of a dense (HfZrTi)O 2 oxide scale that improves resistance to flame scouring. This work provides a new method and strategy for the preparation and design of silicon-free composites for ultra-high temperature applications.
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高影响因子
JOURNAL OF CONTAMINANT HYDROLOGY
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2025
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IF 4.4
Ruihui Gong,Huidong Li,Yuxin Liu,Jiangzhe Fu,Junming Yi,Dongsheng Feng
This study focuses on solving the urgent problem of water environment pollution caused by the discharge of organic dyes in high-concentration textile wastewater. A multifunctional magnetic biochar (MMBC-400) with adsorption and degradation functions was prepared by pyrolysis of corn cob and red mud demonstrating efficient handling of Malachite Green (MG). Compared with traditional adsorbents, MMBC-400 combines adsorption and catalytic degradation functions. The adsorption efficiency of MG was 99.19 %, and the adsorption capacity was 793.51 mg/g. The composite material has excellent stability and is still more than 90 % after 6 cycles. The composite material has excellent stability, and the adsorption efficiency is still greater than 90 % after 6 cycles. Kinetic and isothermal analyses showed that the chemisorption was dominated by multilayer adsorption. Meanwhile, the free radical (∙OH, SO- 4·) and non-radical ( 1 O₂, electron transfer) pathways were supplemented to realize the rapid degradation of MG, and the degradation efficiency was greater than 85 % after four regenerations. Characterization studies further confirmed the role of hierarchical pore structure, surface functional groups (e.g., -OH, Fe O), and π-π interactions in pollutant binding. Despite the good experimental results achieved in laboratory scale, future work should address the issues of generalizable application and long-term stability in complex wastewater matrices. This work provides a sustainable strategy for dye removal through the reuse of agricultural and industrial wastes, realizing a paradigm shift from monofunctional materials to multifunctional remediation systems.
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PubMed
高影响因子
CHINESE CHEMICAL LETTERS
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2025
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IF 8.9
Sijia Zhang,Guangyu Bi,Wen-Qiang Li,Yang Wang,Xian-Yang Shi
Carbon nitride (CN)-based photocatalytic processes hold promise for water decontamination, during which the widely acknowledged charge transfer pathway is unfortunately characterized by severe chemical stability challenges. Herein, the intensive yet underestimated energy transfer pathway is achieved in CN nanosheets for durable, efficient, and sustainable water purification. Upon simple oxygen activation in air, the synthesized nanosheets come with an optimal pollutant removal rate constant of 0.18 min −1 under visible light irradiation, far exceeding that of state-of-the-art photocatalysts. It is revealed that the enhanced exciton binding energy inside the CN nanosheets triggers strong exciton effects, promoting the accumulation of triplet-state excitons by regulating the energy gap. The accumulated triplet excitons almost accomplish the transition from oxygen exclusively to singlet oxygen via the energy transfer pathway, which ultimately contributes to the robust degradation of the pollutants. This work proposes a viable strategy to enhance the exciton effect within CN, upon which efficient water treatment technology driven by energy transfer pathways can be expected.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2025
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IF 6.2
Feihong Li,Lei Zheng,Zhanjun Liu,Mingyu Zhang,Qizhong Huang
This work delves into the fascinating transformation from organic precursors to dense SiC-modified (Ti, Zr, Hf)C solid solution ceramics. Nanocrystalline powder was crafted through an innovative sol-gel process coupled with carbothermal reduction, followed by spark plasma sintering (SPS) to obtain the multi-phase ceramics. The results indicate that the addition of silicone alkoxide is required for forming a robust multi-phase gel network, which facilitates the formation of oxide intermediates (e.g., ZrSiO 4 , HfSiO 4 ), accelerates phase transformation, and inhibits grain from coarsening by encapsulating Ti/Zr/Hf compounds while reinforcing grain boundaries. After pyrolysis at 1400 °C, the precursors gradually evolved into a highly crystalline, medium-entropy solid solution. The optimal sintered composite achieves a relative density of 97.8 % and an open porosity of 0.4 %. The mechanical properties were improved by induced lattice distortion and effect of fine-grained strengthening with the incorporation of SiC. Nanoindentation tests reveal that the hardness and elastic modulus of the (Ti, Zr, Hf)C-SiC composite reach 22.39 GPa and 342.78 GPa, respectively.
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高影响因子
Journal of Water Process Engineering
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2025
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IF 6.7
Jing Zhang,Zhi Song,Boxia Liu,Dongxu Han,Xiayan Zhang,Jialu Liu,Yeqiong Huang,Chuhan Xing
Prussian blue analogues (PBAs) show potential in pollutant degradation, but are often limited by crystal structure regulation and insufficient exposure of active sites. In this study, Bi doping was used to synergistically optimize the crystal structure and electronic environment of CuFe-PBA and construct an efficient CuFe-Bi-3 catalyst for peroxymonosulfate (PMS) activated degradation of tetracycline (TC). The introduction of Bi induces crystal plane reconstruction, enhances the Cu 2+ /Cu + and Fe 3+ /Fe 2+ cycles, and increases the exposure of active sites. The TC degradation rate of CuFe-Bi-3 increased from 72.2 % to 92.1 % within 80 min, and the reaction rate constant increased from 0.01133 to 0.02631 min −1 . Mechanistic studies have shown that Bi regulation promotes the directional generation and utilization of 1 O 2 , constructing a synergistic oxidation pathway dominated by non-free radicals. A comprehensive comparison of EPR signals for various reactive oxygen species showed that the 1 O 2 signal was the strongest, significantly higher than O 2 •- , •OH and SO 4 •- . The system has good stability in various water qualities and a wide pH range, and toxicity assessment also shows that it can effectively reduce the toxicity of degradation products. This study provides theoretical support and application reference for the structure-electronic regulation of PBAs catalysts and Bi doping to construct an environmentally friendly and efficient PMS activation system in a complex water environment.
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高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
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2025
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IF 3.9
Da Wang,Miao Zhang,Qingjie Xie,Song Han,Sisi Xiao,Huijuan Wang
In this study the indigenous materials in plateau areas were used to cope with the challenge of increasing antibiotics pollution in Qinghai-Xizang Plateau. The barely straw was chosen as the raw material to prepare the manganese modified biochar (XBSMBC) and then combined with peroxymonosulfate (PMS) to set up the PMS/XBSMBC system to treat the enrofloxacin (ENR) in water. The study showed that there was a higher PMS activation and thus ENR degradation of the manganese modified biochar prepared from the barley straw than those from Xizang wheat straw and Henan wheat straw. The preparation parameters of the XBSMBC, including the mass ratio of barley straw to manganese and the pyrolysis temperature, for the PMS activation as well as the ENR degradation were reviewed and found that the 1:1 and 900°C were the optimal preparing conditions (XBSMBC-900 (1:1)). The influence of the XBSMBC-900 (1:1) additive amount, PMS dosage and solution initial pH on the ENR degradation was also ascertained. Results of quenching experimental studies and electron paramagnetic resonance demonstrated that ENR degradation in the PMS/XBSMBC system was achieved by a combined effect of SO 4 ·- , ·OH, ·O 2 - and 1 O 2 . Four possible pathways of ENR degradation were provided, and the toxicity analysis predictions were applied to infer the validity of the PMS/XBSMBC process for the ENR solution treatment.
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高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Tianzhan Shen,Cuiyan Li,Haibo Ouyang,Jintao Wang,Leer Bao,Sirui Wu,Yanlei Li,Xinge Niu,Li Wang,Qianqian Chen
To enhance the ablation resistance of C/C-HfC-ZrC-SiC composites at temperatures above 2100 °C, a TiC coating was deposited on the surface of the composites by the molten salt method to achieve pore sealing. The influence of this coating on the ablation behavior of the composites was systematically investigated. When exposed to an oxygen-acetylene flame of 2.4 MW/m 2 for 60 s, the mass ablation rate and linear ablation rate of the TiC-coated composite were only 1.12 mg/s and 0.51 μm/s, respectively. Compared with the uncoated samples (1.64 mg/s and 1.05 μm/s), they were reduced by 32% and 51%, respectively. The excellent ablation resistance can be attributed to the preferential oxidation of the TiC coating to form a continuous liquid TiO 2 layer. This liquid layer significantly reduces the surface heat load through evaporation and heat absorption, lowering the surface ablation temperature by approximately 70 °C. Additionally, the liquid TiO 2 penetrates into the interior of the oxide scale through capillary action and reacts with HfO 2 and ZrO 2 in the matrix, promoting in-situ sintering and forming a dense (HfZrTi)O 2 composite oxide scale with a thickness of approximately 100 μm. The synergistic effect of physical sealing and chemical reaction between the coating and the substrate helps to form a robust self-healing oxide scale, providing effective protection under extreme thermal conditions.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Bingjie Sun,Pengjun Duan,Yuxin Yu,Jiajun Xie,Xiaozheng Han,Qiaomei Sun,Jianzhong Zheng,Zhaoxiang Zhong
Developing catalysts with superior electron transfer capabilities has emerged as a key challenge in the activation of peroxymonosulfate (PMS). Herein, the morphology and electronic structure of CeO2 catalysts were modulated through Co doping, thereby generating a higher concentration of oxygen vacancies (Ovs) and providing additional active sites for PMS activation. At a Co doping level of 25%, the two-dimensional (2D) nanosheet-structured CeO2 achieved 93.6% degradation of Tetracycline hydrochloride (TC) within 60 min, with a rate constant (k) of 0.042 min–1. Quenching experiments and electron spin resonance (ESR) analyses elucidated the involvement of both radical and nonradical pathways in the TC degradation process. Density functional theory (DFT) calculations demonstrated that Co-doped CeO2 with Ovs not only reduced the energy barrier for PMS activation but also enhanced the generation of reactive radicals. This study offers novel insights and technical support for the treatment of wastewater contaminated with recalcitrant organic pollutants.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Jiangpeng Fu,Xiaoyu Han,Ying Li,Jiayang Ma,Haoyang Cui,Xin Zhao,Wenzheng Yu
The rapid expansion of the mining industry has posed challenges to water purification, as beneficiation wastewater containing persistent organic flotation reagents exhibits low biodegradability, necessitating targeted treatment strategies. Benzohydroxamic acid (BHA), as the most common mineral processing reagent, is difficult to be naturally biodegraded due to its oxime group and benzene ring structure. In this study, electro-Fenton degradation of BHA was performed with a novel electroresponsive bimetallic ferrocene-organic framework cathode (FcDA-Ni-Mn) synthesized through in-situ solvothermal method. The cathode comprises bimetal-doped catalytic centers and sandwich complex structure, exhibiting exceptional synergistic electrocatalytic activity. Driven by a voltage of 2.0 V, an electrically induced oxygen-contact reactor (180 mL) with FcDA-Ni-Mn/NiF achieved >90% BHA degradation (1 mmol/L) at the condition of pH 7.0, 1 mM H 2 O 2 , 50 mM/L Na 2 SO 4 within 60 min, reaching an excellent rate constant of 0.045 min −1 . The cycling and practical wastewater experiments revealed remarkable recyclability and practical applicability of FcDA-Ni-Mn. Mechanistic studies reveal that BHA degradation was primarily mediated by reactive oxygen species (·OH, ·O 2 − and 1 O 2 ), with oxidative cleavage occurring predominantly at the oxime group (N O) and its adjacent C C bond. This study elucidates the electro-degradation mechanism of BHA and demonstrates its potential as an effective technology for treating flotation reagents in aquatic environments.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Kaiyang Xu,Lingfeng Weng,Qing Han,Bo Liu,Lizhi Wu,Li Tan,Yihu Dai,Yuanjie Xu,Yu Tang
Cyclopentanone (CPO) as a key raw material has been widely applied in spices, pharmaceuticals, and sustainable fuels. The catalytic conversion of biomass-derived furfural (FAL) to CPO meets the requirements of sustainable development goal but still be challenging because of the relatively low selectivity of CPO in the complex tandem catalytic processes. Herein, a Ni/WO 3 -H 2 catalyst presents a cooperative interface that possesses hetero-valent interface of Ni 0 (metallic) and Ni 2+ (interfacial NiWO 4 ), oxygen vacancies (O v ), and acid sites simultaneously was prepared and applied in the tandem hydrogenative ring-rearrangement of FAL to CPO. Under 160 °C and 3 MPa of initial hydrogen pressure, the catalyst achieved 90.3 % furfural conversion and 96.9 % selectivity to CPO, with a turnover rate of 4.26 mmol·g cat ⁻¹ ·h⁻¹ . Moreover, the Ni/WO 3 -H 2 catalyst demonstrated excellent stability and recyclability. Further investigation on reaction mechanism shows that the synergy of each active site, Ni 0 , Ni 2+ (NiWO 4 ), oxygen vacancies (O v ), and acid sites, promotes the conversion of FAL to CPO and effectively avoids the undesired side reaction. Accordingly, a multi-site cooperative mechanism is proposed: FAL hydrogenates to FOL on Ni 0 sites; acid sites rearrange FOL to HCP, which dehydrates at O v sites to CPE; ultimately, CPE is hydrogenated to CPO on Ni hetero-valent interface.
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高影响因子
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