Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Rongrong Dai,Bingyan Zhou,Jingwen Zeng,Pengle Qian,Yadong Sun,Yingtang Zhou,Zheng Guo
A dual-phase copper-doped iron oxide nanozyme (Cu-α/γFO) was synthesized via a facile hydrothermal method for efficient organic pollutant degradation. The as-prepared Cu-α/γFO exhibits excellent peroxidase-like activity, degrading 99.5% rhodamine B (RhB) under optimal conditions (pH 4, 40°C) while retaining 40.73% of its initial activity after three cycles. Critically, it demonstrates broad-spectrum catalytic efficacy, efficiently degrading diverse organic dyes (e.g., cresol red, methyl violet, methylene blue), and retains high catalytic activity even in complex environments containing coexisting cations (K⁺, Ca²⁺, Mg²⁺), anions (H₂PO₄⁻, HCO₃⁻, NO₃⁻), or organic solvents (acetone, ethyl acetate). X-ray diffraction (XRD) and Raman spectroscopy confirmed the Cu-doping-induced α/γ-Fe₂O₃ phase crystal structure, while minimal copper leaching after 21-day aqueous storage validated structural integrity. The mechanism of enhanced peroxidase-like activity of Cu-α/γFO was proposed based on integrated characterization, including electron spin resonance (ESR), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), and density of states calculations. Degradation pathways were elucidated using high-performance liquid chromatography-mass spectrometry (HPLC-MS) identification of intermediates and theoretical calculations. This work presents a dual-phase engineering strategy through targeted metal doping, advancing high-performance nanozymes for sustainable environmental remediation.
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高影响因子
POWDER TECHNOLOGY
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2025
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IF 4.6
Hang Lu,Fei Huang,Wenting Zhao,Zhuoying Shan,Qingdong He,Jingyu Zhang,Wenbo Wang
A sustainable strategy was developed to convert graphite tailings (GT), a solid waste, into a hierarchical porous silicate adsorbent with engineered multiple active sites (denoted as GTPM12h) through an integrated mechanochemical-hydrothermal route for efficient decontamination of organic dye wastewater. The reconstructed silicate phases are enriched with oxygen-containing functional groups and metal active sites, resulting in remarkably enhanced adsorption performance. GTPM12h exhibits superior adsorption capacities of 379.76 mg·g −1 for methylene blue and 487.57 mg·g −1 for methyl violet over a broad pH range (5–9), outperforming most commercial activated carbons. At a low dosage (0.6 g·L −1 ), the removal efficiency of dyes exceeds 99.9 % in both single and ternary mixed dye systems and remains at 92.4 % after five cycles. The adsorption process follows a chemisorption-dominated monolayer mechanism driven by synergistic electrostatic attraction, hydrogen bonding, and ion exchange. This study presents an eco-friendly strategy addressing dual environmental challenges: upcycling industrial waste and remediating water pollution.
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高影响因子
LANGMUIR
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2025
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IF 3.9
Guannan Le,Henghui Li,Ling Cai,Xinyi Zhu,Zhijiang Ji,Changcai Zhu,Yanqiang Huang,Jin Chen
The devastating occurrence of antibiotic resistance arising from the surrounding environment, such as in healthcare facilities, has posed global threats to public health, urging a continuous search for safe and effective antibacterial agents. Here, the adjuvant activity center of hemin in conjunction with the traditional antibiotic of ampicillin was successfully encapsulated into a three-dimensional macromolecular framework of bovine serum albumin (BSA) to form hemin–BSA–ampicillin nanoparticles (HBA NPs) via a straightforward desolvation process. Based on the robust peroxidase-like activity of the obtained HBA NPs, a significant quantity of hydroxyl radicals (•OH) was generated via the Fenton-like reaction. As an electrophilic species, •OH may not only facilitate the oxidation of organic substances, leading to observable color reaction, but also effectively inactivate pathogens, including drug-resistant bacteria and viruses, through structural decomposition. Compared to the sole antibacterial effect of ampicillin, HBA NPs exhibited markedly superior antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). Furthermore, the formed protein coating on the nanoparticles contributed significantly to the desirable biocompatibility of the obtained nanocomposite. Therefore, the easily prepared, highly biocompatible, and antimicrobial HBA NPs provided a prototype of protein-based antibiotic adjuvants using peroxidase-like nanomaterials with promising therapeutic potential to tackle emerging drug-resistant infectious microbes.
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高影响因子
ANALYST
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2012
·Vol. 137
·期 19
·4571-4576
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IF 4.23
Jianwei Dong,Yuan Peng,Na Gao,Jialei Bai,Baoan Ning,Ming Liu,Zhixian Gao
A new surface-initiated polymerization based on pasting the initiator on a sensor chip surface was applied to prepare a malachite green (MG) imprinted ultrathin film on a surface plasmon resonance (SPR) sensor. First, the initiator (2,2-azoisobutyronitrile) was pasted on the gold surface using polyvinyl chloride (PVC). The initiator-covered gold chip was then soaked in a pre-polymerization solution prepared by dissolving methacrylic acid (functional monomer), ethylene glycol dimethacrylate (cross-linker), and MG (template) in DMSO in a weighing bottle. Finally, the weighing bottle was placed in a vacuum oven and thermal-initiated polymerization was conducted at 60 °C for 16 h. This method was simple and time-saving compared with the commonly used surface-initiated polymerization. More importantly, the molecularly imprinted polymer (MIP) film prepared using this method was much thicker than that of commonly used methods; the adsorption quantity was also much larger. The MIP modified SPR sensor showed high sensitivity and selectivity as well as good stability in detecting MG. The results suggest that the ultrathin MIP film prepared using the new method in this study is suitable to serve as the recognition element of the SPR sensor.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Wenbin Zhang,Xiangsheng Han,Zhiqiang Qi,Hao Tan,Keyan Yang,Hongzhen Cai
Lignin-containing cellulose nanofibers (LCNFs) with promising sustainability and multiple functionalities are highly in demand while still limited by the high energy consumption and potential environment disruption in preparation. In this work, the super-base system (dimethyl sulfoxide/potassium hydroxide, DMSO/KOH) was firstly employed as pseudosolvent to swell melon vine powder by partially remove some non-cellulose components (such as extraction, lignin and ash) in plant cell wall, and facilitate the following production of LCNFs. Due to the strong nucleophilicity of DMSO/KOH, universal swollen effects toward corn husk , poplar, bagasse , rice husk, and cotton stalk were achieved, and the LCNFs from them were also successfully obtained (with yields of ∼78.75%, 55.60%, 51.33%, 46.13%, and 53.90%, respectively). Besides, this method resulted in high lignin content among LCNFs (∼19.54%), which endowed the resultant membranes with superior mechanical strength, thermal stability, and dye rejection performance (a rejection rate of ∼92.7%, and a flux of 15.16 L•m -2 •h -1 •bar -1 toward methyl violet at 250 ppm). Thus, this research paves a simple, efficient, and universal way to prepare LCNFs from various biomass.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Liying Liu,Min Zhang,Yuanyang Yan,Yahong Zhou,Shuangfeng Wang,Pihui Pi,Xiufang Wen,Yu Qian,Lei Jiang
Self-cleaning coatings have been garnering significant attention for their ability to reduce surface pollution by repelling liquids. However, creating transparent self-cleaning coatings that effectively repel ultralow surface tension liquids in harsh environments, like extremely high or low temperature environments, remains a challenge. Here, a transparent omniphobic coating (PMAPOSS-co-PFMA) is reported to achieve the repellency of droplets with surface tensions down to 15.5 mN·m −1 (n-pentane), even at temperatures up to 160 °C and down to −70 °C. The coating is engineered by grafting fluoropolymer with fluoroalkyl side chains onto the rigid polyhedral oligomeric silsesquioxane framework. The fluoroalkyl side chains tend to crystallize on the coating's surface, resulting in its low surface tension (measured at 9.39 mN·m −1 ). The incorporation of the robust POSS significantly enhances the coating's chemical, mechanical, and thermal stability. Moreover, with low roughness (R a = 1 nm), the coating has a light transmittance of 90.5 %, surpassing untreated glass by 3.2 %. Heated at 80 °C, the migration of the long-fluorinated polymer chains within the PMAPOSS-co-PFMA coating enables its self-healing properties upon damage. These results provide a new perspective to develop versatile self-cleaning omniphobic coatings suitable for practical applications in extreme environments, such as asphalt transport pipes operating in high-temperature conditions.
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Materials Today Chemistry
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2024
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IF 6.7
Yi Xu,Shumin Xu,Shilong Liu,Gao Liu,Gehui Li,Yunyun Yang
Environmental and human health are significantly threatened by oily wastewater emission and oil spills. Polymeric porous aerogels are ideal materials to absorb oils or organic solvents selectively, thereby mitigating environmental pollution and protecting human health. In this study, a shapeable, super-hydrophobic, polyacrylonitrile fiber/polybenzoxazine (PAN/PBOZ) aerogel with high oil-water separation ability were successful designed. The preparation process of PAN/PBOZ aerogel is as follows: Firstly, PAN micro-nanofibers were prepared by electrospinning, and then benzoxazine was uniformly dispersed into PAN fibers. After freeze-drying and thermal curing, the aerogel was obtained. For comparative analysis, a pure polyacrylonitrile (PAN) fiber aerogel is also presented. The resulting PAN/PBOZ aerogel exhibits ultralight (0.017 g/cm 3 ), remarkable hydrophobicity , as evidenced by a water contact angle of 156°, high adsorption capacity up to 157.7 g/g for oil or organic solvents, and a high water-in-oil emulsion separation flux (9718 ± 45 L m −2 h −1 ) efficiently. Notably, the rigid cross-linking structure of PBOZ and the toughness structure of PAN make the aerogel exhibit synergistic strengthening and toughening effects. When the PAN/PBOZ fiber aerogel is compressed to 60 %, an outstanding recovery stability of its original size is displayed. While the springback of pure PAN fiber aerogel is poor under the same compression test condition. In conclusion, this study provides a preparation method and design concept of aerogel that can meet the requirements of low density, high toughness and high oil adsorption capacity. The rationally designed PAN/PBOZ aerogel shows significant potential for practical applications in treating oily and organic wastewater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Qinxin Wang,Feifei Wu,Xiaonan Qiu,Huijun Yu,Mengke Lu,Xuan Gu,Jiaying Liu,Baoding Chen,Miaomiao Zhang,Fengyi Du
Photothermal therapy/photodynamic therapy (PTT/PDT), as a noninvasive therapeutic modality, has been extensively applied in superficial tumor treatment. However, their curative effects were largely weakened due to hypoxia and an elevated glutathione (GSH) microenvironment. Herein, zinc phthalocyanine (ZnPc)and sulfasalazine (SAS) coloaded nanoaggregates (Z-S@B NAs) with Prussian blue (PB) functionalization (PB/Z-S@B NAs) were fabricated via self-assembly and using an in situ oxidative polymerization method for tumor PTT/PDT sensitization. The designed PB/Z-S@B NAs were capable of triggering local hyperthermia and generating substantial reactive oxygen species (ROS) under 660- and 808-nm laser irradiation. Notably, the PB/Z-S@B NAs exhibited favorable catalase-like (CAT-like) activity that decomposed hydrogen peroxide into oxygen, which further enhanced tumor cell sensitivity to PTT/PDT. Moreover, SAS from the PB/Z-S@B NAs remarkably decreased the antioxidant GSH level, resulting in a synergetic tumor-killing effect. Collectively, this study provides a versatile nanoplatform to overcome intrinsic antitumor effect and enhance tumor sensitivity to PTT/PDT.
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高影响因子
Science Advances
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2025
·Vol. 11
·期 30
·
IF 12.5
Mei Yang,Xin Chen,Zhongxing Chen,Nan Zhao,Zhenhai Zeng,Xiaomin Huang,Zheng Li,Jiawei Li,Guoli Zhao,Manli Deng,Zhilin Zou,Hongxian Pan,Aodong Chen,Tingting Chen,Yue Wu,Xueyu Fu,Qimanguli Saiding,Na Kong,Wei Tao,Xingtao Zhou,Jinhai Huang
Oxidative stress, an imbalance between the body’s oxidative and antioxidant systems, contributes markedly to the development of numerous ocular surface diseases, particularly dry eye disease (DED). Effective elimination or reduction of reactive oxygen species (ROS) can halt disease progression and alleviate symptoms. This study presents an innovative thermoresponsive, metal-free carbon nanodot (CD) hydrogel, termed F-CD hydrogel, which exhibits potent neutralization capabilities against multiple free radicals, including OH·, O 2 − ·, and ·DPPH. This hydrogel demonstrates remarkable antioxidant, anti-inflammatory, and antiapoptotic capacity, effectively relieving DED symptoms by eliminating ROS at their source. Furthermore, its thermosensitive characteristics enhance the adherence of CDs to the ocular surface. In mouse models of DED, the F-CD hydrogel accelerates epithelial repair, thickens the corneal epithelium, promotes tear secretion, and boosts goblet cell count by up-regulating protective genes while suppressing those promoting apoptosis and oxidative stress. Coupled with its excellent biocompatibility and reduced administration frequency and treatment duration, the F-CD hydrogel emerges as a promising therapeutic approach for DED.
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SURFACE & COATINGS TECHNOLOGY
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2024
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IF 5.3
Zhaoyang Zheng,Dong Han,Tianyu Zhang,An Du,Ruina Ma,Yongzhe Fan,Xue Zhao,Xiaoming Cao
The Co-depletion zone in WC–Co brazed joints is the main zone of joint failure, so it is crucial to explore novel processes to inhibit the Co-depletion zone and enhance the joint shear strength. In this study, a composite process of pre-plating Cu on the WC–Co surface + brazing was designed. Co-depletion zone reduces from 6 μm to 1 μm due to the Cu plating. Meanwhile, the formation of a plating fusion zone in the filler layer transforms TiCo with a thickness of 2.5 μm into a small number of TiCo particles. Moreover, the high concentration of Cu atoms in the vicinity of the WC particles at the interface changes the Co-segregation layer in the WC into a Cu-rich layer. The concentration of Cu in the filler layer leading to precipitation of TiCu and Ti 2 Cu particles. Ti 2 Cu particles encapsulated by ductile Ag–Cu–In ternary eutectic contribute to inhibit the cracks propagation. The shear strength of the joints was enhanced by 51.3 % to 295 MPa. The composite process of pre-plating on the base material surface + brazing has positive significance in inhibiting the excessive diffusion of elements from the base materials to the filler layer.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Yuxiang Wang,Hongyu Liu,Beizhang Zhang,Guannan Zhang,Hailong Hao
Sonodynamic therapy (SDT) is considered an effective method for treating bladder cancer, but the limited electron transfer of a single material and the hypoxic microenvironment of cancer limit the efficiency of SDT. Here, barium titanate (BTO) was prepared, and Cu was doped into BTO through hydrothermal synthesis and high-temperature annealing, followed by surface conjugation of tumor-specific proteins (BTO/Cu/PDA/Nectin-4). The Cu doping enhances the ferroelectric polarization of BTO and reduces its bandgap, facilitating electron transfer. Meanwhile, Cu can react with hydrogen peroxide (H 2 O 2 ) via the Fenton reaction to generate reactive oxygen species (ROS), thereby enhancing the chemodynamic therapy (CDT) effect. The combination of SDT and CDT enhanced ROS production, and both in vitro and in vivo results demonstrated excellent cytotoxic effects and tumor suppression against bladder cancer cells. This combined SDT and CDT approach offers an effective therapeutic strategy for antitumor treatment.
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