CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Mengnan Liu,Zhilong Zhou,Heqi Gao,Jiangfei Li,Jiayu Wang,Haitian Zhao,Zhongjun Cheng,Weihong Lu
Antimicrobial packaging has received extensive attention due to its significant role in ensuring food safety. However, direct contact between liquid foods and antibacterial surfaces often causes food residue and affects the release of antibacterial agents, ultimately deteriorating antibacterial performance. Here, we report a strategy to overcome this imperfection by grafting PDMS molecular brushes onto the thymol-loaded polylactic acid (PLA) films. The PDMS molecular brushes provide the surface with low adhesion to various food droplets (e.g., cola, milk, and vinegar). The sliding angles (SA) for these food droplets are all less than 30°. Meanwhile, it does not affect the release of the antibacterial agent (thymol). Based on these advantages, the film shows enhanced stability in its antibacterial properties, with bactericidal rates against E. coli and S. aureus reaching nearly 100%. The excellent antibacterial performance can be maintained even after contact with liquid foods, as evidenced by the nearly unchanged inhibition zones against E. coli and S. aureus (e.g., the diameter of the inhibition zone against S. aureus is slightly changed from 1.87 nm to 1.83 nm). Moreover, the optimal conditions to fabricate the film were also discussed in detail, such as the content of thymol, the alkaline hydrolysis time, the temperature and time for grafting PDMS molecular brushes. The work reports a strategy to guarantee stable release of the antibacterial agent through grafting PDMS molecular brushes onto packaging films, thereby effectively prolonging the shelf life of liquid foods.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124752
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IF 7.5
Zi-Yue Li,Run-Mei Li,Jia-Min Zhou,Yi-Nan Zhang,Zhe Wang,Yao Zou,Ren-Cun Jin,Qian-Qian Zhang
In this study, zero-valent iron (ZVI) was utilized as an alternative electron donor in the partial denitrification (PD) process to achieve stable nitrite (NO 2 - -N) accumulation, thereby enabling cost-effective treatment strategy for low carbon-to-nitrogen ratio (C/N) wastewater. Results demonstrated that under the optimal molar ratio of ZVI to nitrate (NO 3 - -N) (ZVI/N) of 2/3, the C/N of PD system reduced from conventional range of 2.5–3.0–2.0, saved 20% of carbon demand. Under C/N was 2, the NO 2 - -N transition rate (NTR) was 62.90 ± 7.71%, which was not significantly different from that of C/N was 2.5. Additionally, during the operation of the PD system, the addition of ZVI affected the characteristics of EPS and the response of the microbial community. Although the total EPS content decreased during the ZVI addition phase, changes of the composition of EPS indicated that the microorganisms adapted to the altered iron ion-rich environment. Furthermore, the relative abundance of PD functional bacteria ( Thauera ) rose from 4.44% to 21.15%, enhanced stability of system under low-carbon conditions. This study demonstrated that ZVI significantly reduced carbon source demand for PD process, provided viable technical pathway for low C/N wastewater treatment.
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Nanomaterials
·
2026
·Vol. 16
·期 13
·820
·
IF 4.8
Xiaomin Tian,Yuan Cao,Huilin Zhou,Fanjie Tan,Ziqin Zhang,Liying Pei,Yi Ma,Jianzhi Gao,Wenliang Zhu,Minghu Pan
Tuning the d -band electronic structure of non-noble-metal catalysts is a central strategy for an alkaline hydrogen evolution reaction (HER), yet how composition controls the d orbital in multi-Wyckoff-site layered systems remains insufficiently understood. Here, layered (Fe 1- x Ni x ) 3 GaTe 2 single crystals ( x = 0.2–1.0) were synthesized by the self-flux method as a platform to address this question. Single-crystal XRD and EDS confirm that Ni is uniformly incorporated into the parent P6 3 /mmc framework while inducing a composition-dependent lattice evolution. Electrochemical measurements in 1.0 M KOH reveal a clear volcano-shaped composition dependence, peaking at x = 0.6, where the lowest overpotential, the smallest Tafel slope (94 mV dec −1 ), the lowest charge-transfer resistance and the largest double-layer capacitance are simultaneously reached. First-principles calculations show that Ni doping reshapes the Fe-site d orbital strongly composition-dependent rate: the Fe d -band center upshifts rapidly by ~0.5 eV between x = 0.4 and x = 0.6, while the Ni d -band center stays nearly fixed in the same composition range. The maximum of HER activity therefore aligns with a steep upshift of the Fe d -band center rather than with the Ni content itself. Charge-density mapping of (Fe 0.4 Ni 0.6 ) 3 GaTe 2 further demonstrates that the electron-enriched regions are located on the Fe and interlayer Ni3 sublattices that dominate the d states near E F .
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Journal of Environmental Sciences
·
2025
·
IF 6.3
Zhiyuan Kong,Xinru Wang,Xiangchun Quan,Yan Zhang,Dongsheng Zhang,Kebing Zhou
Polyurethane foam (PUF) is widely used as a biofilm carrier in water treatment due to its three-dimensional porous structure and large specific surface area. However, inert nature of PUF limits its active involvement in biological processes. This study developed a novel composite carrier by integrating sulfidized nano zero-valent iron (SnZVI) containing hydrogel into PUF (SnZVI-PUF), aiming to improve its function in nutrients and organic matter removal. The SnZVI-PUF carrier exhibited enhanced phosphorus adsorption capacity (17.10 mg/g), prolonged iron release kinetics and better anti-aging properties than nZVI. The biofilm reactor packed with the SnZVI-PUF carrier outperformed that with control PUF, achieving a higher average removal percentage of PO 4 3 ⁻-P, NO 3 ⁻-N, TN and COD by 28.8 %, 17.9 %, 14.2 % and 31.3 %, respectively, under aerobic operation at the influent containing 3.0 mg/L PO 4 3 ⁻-P, 15.0 mg/L NO 3 ⁻-N and 90 mg/L COD. The hydrogel layer allowed SnZVI to adhere stably to PUF surfaces, preventing rapid aggregation and passivation of nZVI while enabling controlled release of Fe 2+ /Fe 3+ . Phosphate could be removed via adsorption by SnZVI, binding with oxidized Fe species (Fe 2+ /Fe 3+ ) or coprecipitation with iron hydroxides. The SnZVI-PUF carrier promoted the enrichment of specific functional microorganisms (e.g., Acinetobacter for phosphorus accumulation, Comamonas for nitrate reduction, Comamonas and Raoultella for Fe(III) reduction and Acidovorax for Fe(II) oxidization), which may also contribute greatly to the enhanced phosphorus and nitrate removal. The study highlights the potential of SnZVI-PUF as a multifunctional biofilm carrier in advanced wastewater treatment and offers a sustainable solution for simultaneous nutrient and organic pollutant removal.
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BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Wenye Li,Binghan Xie,Zhipeng Li,Guoyu Zhang,Zhiying Lv,Qinghao Li,Shuyu Zhao,Mu Tong,Yuanyuan Gao,Langming Bai
The effective dewatering of waste activated sludge (WAS) and the utilization of resources are crucial for the sustainable development of wastewater treatment plants. Ultrasonic (US) collaborative iron-carbon (Fe-C) activated peroxydisulfate (PDS) coupling system was constructed to investigate the transformation of physicochemical properties and explore the mechanisms during the cracking and oxidation of WAS. The ultrasonic enhanced Fe-C/PDS system, which exhibited excellent oxidation capacity under the conditions of PDS, Fe-C, and ultrasonic power levels at 0.12 g/g TS, 0.3 g/g TS, and 0.3 W/mL. The water content of the sludge cake was reduced to 61.71 %, while the specific resistance to filtration was lowered to 1.12 × 10 12 m/kg (decreased by 88.2 %). Furthermore, ultrasonic improved the WAS cracking capacity with a satisfying SCOD production (630.64 mg/L) and a dramatic reduction of 9.16 % in volatile solids. Compared to Fe-C/PDS, the addition of ultrasonic enhanced the leaching of Fe, released carbon source and promoted the formation of various reactive oxidative species to degrade bound EPS. The contribution of O 2 − and 1 O 2 was 37.00 % and 43.17 %, indicating the oxidation process of free radicals and non-free radicals in Fe-C/PDS/US system. Additionally, the concentration of short-chain fatty acids was increased by 96.7 %, which significantly accelerating the quality of carbon source suitable for recycling. The positive improvement of sludge physicochemical properties revealed the disintegration-degradation synergistic effect of the Fe-C/PDS/US systems. These findings provide a novel strategy for effective disposal and reduction in WAS while also offering valuable insights into resource utilization.
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Biochar
·
2026
·Vol. 8
·期 1
·48
·
IF 15.1
Zhang Xiangyu,Zhang Peng,Jiao Le,Zhang Yanwei,Sun Hongwen,Liu Chenglan
Agricultural herbicide contamination in soil poses a significant challenge to global food security and ecosystem health. However, conventional remediation strategies often neglect the co-control of parent compounds and their more mobile transformation products, thereby increasing the risks of crop uptake and incomplete detoxification. Here, we have developed a novel nitrogen-doped biochar-modified zero-valent iron nanocomposite (NC-ZVI) that enables multi-interface regulation of pollutants in soil–plant systems, simultaneously promoting soil remediation and safeguarding crop health. Engineering of atomic Fe–C and Fe–N coordination along with N-doped active sites modulated the electronic structure of ZVI, enhancing the surface reactivity and electron capability in NC-ZVI. This enabled rapid removal of approximately 90% of acetochlor in soil within 7 d by reinforced interfacial catalytic degradation. NC-ZVI also promoted the release of iron ions, driving the formation of iron plaques on maize root surfaces. These plaques established a dynamic protective barrier that reduced the total concentrations of acetochlor and its degradation products in maize by 81.2% while maintaining iron nutrient uptake. The multi-interface interaction strategy not only restored maize productivity, increasing its aboveground biomass by 208.4%, but also preserved soil microbial diversity, all at a cost-competitive level. Overall, this work advances the understanding of the interactions between biochar-based materials and pollutants in soil–plant systems, providing a powerful tool to tackle soil pollution and enhance food safety.
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WATER RESEARCH
·
2026
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IF 12.4
Ke Pan,Zekun Zhao,Paul G. Tratnyek,Li Gong
Modifications of zero-valent iron (ZVI) that increase surface hydrobobicity are known to increase the rate constants and electron efficiency ( ε e ) for non-polar contaminant reduction, yet the effect of hydrophobicity-driven desolvation on transformation of polar contaminants remains unclear. This study provides the first comprehensive characterization of interfacial desolvation’s role in enhancing ZVI-based dehalogenation performance, using the amphiphilic pharmaceutical compound florfenicol (FF) as a target contaminant. ZVI with controlled hydrophobicity was prepared by introducing boron mechanochemically, resulting two distinct materials: sB-ZVI with a hydrophobic BO x surface layer (water contact angle is approximately 77°) and B-ZVI without it (water contact angle <25°). Attenuated total reflection Fourier transform infrared (ATR-FTIR) analysis showed the hydrophobic BO x layer disrupts interfacial hydration, decreasing coordination by water around FF’s hydrophilic amide and sulfonyl groups. This desolvation activates FF’s C Cl bonds partly by lowering their lowest unoccupied molecular orbital (LUMO) energies from about -2.1 eV to -2.3 eV, which increases the rates of electron transfer-mediated dehalogenation kinetics (2–5-fold compared to B-ZVI). The BO x layer also weakens interactions between sB-ZVI and water, which suppresses the rate of hydrogen evolution by about 80%. The net result of these two effects are increased ε e by 38%. The relevance of these desolvation-induced benefits on FF dehalogenation was verified by batch experiments done with a representative set of groundwater samples and 150-day aging tests (retaining >80% Fe° content and ≤20% kinetic reduction).
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121500
·
IF 7.2
Jun Zhao,Juan Li,Jilai Gong,Siqun Tang
Continuous pesticide application in agricultural systems poses significant risks to soil quality, yet strategies for maintaining sustainable pesticide cycling remain underexplored. Using pot experiments, this study simulates the entry of exogenous pollutants into paddy soils by combining biochar (BC) and nanoscale zero-valent iron (nZVI) to control and remove neonicotinoid pesticides. Soil extract experiments demonstrated complete degradation of thiamethoxam (20 mg/L) within 20 days. The combined treatment enhanced degradation efficiency by at least 55 % compared to the cumulative degradation by separate treatments, indicating significant synergistic effects. Amendment with 10 g/kg biochar immobilized 68.5 % of exogenous thiamethoxam in surface soil (1–2 cm) but concurrently prolonged its persistence. In contrast, nZVI incorporation enhanced thiamethoxam and intermediate degradation by 21.5 % (90 d) in biochar-amended soil, demonstrating superior efficacy to other iron-based materials. Microbial activity dominated thiamethoxam degradation at soil-water interfaces, while phototrophic biofilms primarily drove aqueous-phase degradation. The synergistic interactions between biochar and nZVI regulated microbial functionality, significantly enhancing adsorption and degradation efficiency for exogenous thiamethoxam. This work systematically elucidates adsorption-degradation mechanisms within the BC-nZVI-microbe ternary system, establishing a theoretical framework for optimizing material-biological interfacial kinetics in soil remediation. These findings provide novel strategies for pesticide control in paddy fields to benefit soil safety.
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ACTA MATERIALIA
·
2026
·
IF 9.3
Ka Wang,Qirui Wei,Ruilin Guan,Zhigang Zhang,Jiawei Zhang,Hengdong Ren,Wenqing Wei,Yuxiang Yan,Haizeng Song,Jingyi Han,Peng Zhan,Xianghong Niu,Shancheng Yan,Xinglong Wu
High-efficiency and low-cost oxygen evolution reaction (OER) catalysts are essential for advancing water electrolysis technologies. Transition metal thiophosphates (TMPSs) have garnered considerable interest in the OER field due to their ability to modulate the electronic states of active atoms through surface defect engineering. In this study, monolayer theoretical calculations reveal that the interaction between adjacent single-double sulfur vacancies (S-DSVs) significantly alters the electronic structure of phosphorus atoms, thereby tuning the binding strength with reaction intermediates and effectively lowering the energy barrier of the rate-determining step. As a result, S-DSVs outperform isolated single sulfur vacancies (SSVs) and double sulfur vacancies (DSVs). Single-layer FeNiP 2 S 6-x (SL-FeNiP 2 S 6-x ) catalysts with uniformly distributed S-DSVs were successfully synthesized via a mild and selective etching process using B(OH) 3 . Electrochemical measurements demonstrate that SL-FeNiP 2 S 6-x with an optimized S-DSV concentration delivers excellent OER performance, achieving a low overpotential of 171 mV at 10 mA cm -2 and a Tafel slope of 38 mV dec ‑1 in 1 M KOH—surpassing most reported iron/nickel-based OER catalysts. This work introduces a novel strategy for enhancing electrocatalytic activity by precisely controlling the position and distribution of sulfur vacancies through controllable etching.
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FOOD CHEMISTRY
·
2026
·
IF 9.8
Linpin Luo,Wengang Cai,Zihan Qiu,Wenqiao Su,Yiya Ping,Bingzhi Li,Qianjin Liu,Jianlong Wang
Herein, we propose a composite packaging film with pasteurization-like activity by doping the MnO x /MoO x into chitosan film (CMM). The prepared CMM films exhibited excellent photothermal activity, which was inherited from the material. Under near infrared (NIR) irradiation, CMM films showed pasteurization-like activity due to the photothermal performance, in which CMM 0.1 was able to kill 99.15 % of E. coli and 99.39 % of S. aureus . CMM 0.1 film also showed good light transmittance (T 660 = 69.2 %), tensile strength (TS = 41.4 MPa) and UV-light/water vapor/ oxygen barrier ability. Less than 4.28 % of hemolysis rate and more than 92.89 % of cell survival rate after being treated with MnO x /MoO x demonstrated the biosafety of the CMM films. The shelf life of tangerines treated with CMM 0.1 + NIR can be extended from 9 days to 21 days, in which the nutrients can be retained well during storage. Our work provides a new perspective on the combination of pasteurization and packaging technology.
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Nature Protocols
·
2026
·
IF 18.4
Wu Yinglong,Zhang Chaobang,Chen Junjie,Zeng Fang,Wu Shuizhu,Zhao Yanli
Light-excited dual-mode imaging that integrates multispectral optoacoustic tomography (MSOT) and near-infrared region II fluorescence (NIR-II FL) imaging allows complementary deep-tissue visualization with high anatomical resolution and molecular sensitivity, thereby enhancing the accuracy of biomedical diagnostics. Activatable probes further advance this approach by producing signals upon recognition of disease-related biomarkers, which reduces background interference and improves imaging specificity. BTPE-NO 2 @F127, a benzothiadiazole-based nanoprobe, exhibits selective activation of both optoacoustic and NIR-II FL signals in response to hydrogen peroxide (H 2 O 2 ), a crucial early stage biomarker of liver injury, thus permitting cross-validated detection of hepatic damage in vivo with excellent signal-to-background ratio contrast. Here we present detailed procedures for preparation of the BTPE-NO 2 @F127 nanoprobe and its applications in MSOT/NIR-II FL dual-mode imaging of trazodone- or ischemia–reperfusion-induced liver injury in mice. Compared to conventional liver injury diagnostic methods, such as invasive tissue biopsy, ex vivo blood analysis and previously reported fluorescent/optoacoustic probes, BTPE-NO 2 @F127 offers real-time, in situ monitoring with high sensitivity and signal-to-background ratio, as well as mutually corroborating signals for increased reliability. The fabrication of BTPE-NO 2 @F127, including the chemical synthesis and characterization, requires ~17 d, while the in vitro validation of its H 2 O 2 responsiveness takes ~5 d. Notably, the complete workflow of data acquisition and analysis for MSOT/NIR-II FL dual-mode imaging of liver injury in mice using BTPE-NO 2 @F127 can be accomplished within 10 h. The protocol is easy to follow and suitable for clinicians and researchers with a basic understanding of chemistry and bioimaging techniques.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2026
·
IF 4.7
Gao Yuxuan,Kong Qiyu,Wang Jun,Sun Fengwei,Liu Xinyu,Wang Deliang,Li Jiangao,Yang Zhen
Developing organic type I photosensitizers (PSs) that generate less oxygen-dependent reactive oxygen species (ROS) has long been recognized to be an appealing yet significantly challenging task in the field of photodynamic therapy (PDT), owing to the high oxygen dependency of conventional PDT, which impairs its overall therapeutic efficacy, particularly in hypoxic solid tumors. Herein, a molecular fluorination strategy to finely regulate PSs with bright near-infrared (NIR) fluorescence and superior type I ROS generation ability was exploited. Benefited from the improved donor-acceptor interaction, promoted intersystem crossing process, and increased spin-orbit coupling (SOC) constant, the optimal TIBT-5F simultaneously exhibits broad absorption with a larger molar extinction coefficient in the visible-light region, bright NIR fluorescence emission and stronger type I ROS generation efficiency, making TIBT-5F a promising candidate for precise NIR fluorescence-guided PDT. The as-prepared TIBT-5F nanoparticles (NPs) can quickly accumulate in the tumor site, effectively produce both type II and type I ROS and prominently suppress the tumor growth under a safe white light irradiation (40 mW/cm 2 ) with minimized systemic toxicity. This study thus offers a new insight into constructing advanced type I PSs for precise fluorescence imaging-guided tumor theranostics.
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危险品化学品经营许可证（带存储）