APPLIED ORGANOMETALLIC CHEMISTRY
·
2021
·Vol. 36
·期 3
·e6556
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IF 4.105
Wen-Jing Qiu,Ming-Wu Gao,Qi Chen,Ao Zheng,Yi-Jia Shi,Xin Liu,Juan-Hong Li,Guo-Liang Dai,Yang Hu,Zi-Xia Lin
Under normal temperature and pressure, a novel improved Fenton system that was named MHACF-MOF-808(Zr) was constructed after the introduction of Pd/MOF-808(Zr) and H 2 to solve the inherent problem of the production of iron sludge in the classic Fenton system. Only trace amount of Fe II was required during the whole reaction because Fe III could be rapidly reduced by the active hydrogen derived from the adsorption and activation of H 2 on the surface of Pd/MOF-808(Zr) composite. The concentration of Fe II could be maintained more than 10 μM. The removal of target pollutant sulfamethazine in this system was mainly relied on the degradation of ·OH verified by both of the direct detection and indirect inhibition (using methanol). By using the calculation of Laplacian bond order, the degradation pathway of sulfamethazine followed by the cleavage of N S bond. This prediction was verified by the detection of intermediate products. Only 21% sulfamethazine could be degraded after 3-h reaction in the classic Fenton reaction system, while it could be thoroughly degraded in 1.5 h in the MHACF-MOF-808(Zr) system. The influence of main parameters on the degradation effect of sulfamethazine, such as initial pH, the flow of H 2 , dosage of Pd/MOF-808(Zr), concentration of sulfamethazine, ferrous, and hydrogen peroxide, were systematically studied. Based on the relative stability of Pd/MOF-808(Zr) confirmed by the morphological characterization, sulfamethazine could be efficiently degraded in the MHACF-MOF-808(Zr) system.
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Zezhou Zhao,Wei Lou,Delai Zhong,Yao Shi,Fengjiao Zhang,Linling Wang,Xiaohui Wu,Anxu Sheng,Jing Chen
Engineering black carbon (e.g. biochar) has been widely found in natural environments due to natural processes and extensive applications in engineering systems, and could influence the geochemical processes of coexisting arsenic (As V ) and Fe II , especially when they are exposed to oxic conditions. Here, we studied time-varying kinetics and efficiencies of As V immobilization by solid-phase Fe II (Fe II solid ) and Fe III (Fe III solid ) in Fe II -As V -biochar systems under both anoxic and oxic conditions at pH 7.0, with focuses on the effects of biochar surface and biochar-derived dissolved organic carbon (DOC). Under anoxic conditions, Fe II could rapidly immobilize As V via co-adsorption onto biochar surfaces, which also serves as the dominant pathway of As V immobilization at the initial stage of reaction (0–5 min) under oxic conditions at high biochar concentrations. Subsequently, with increasing biochar concentrations, Fe III solid precipitation from aqueous Fe II (Fe II aq ) oxidation (5–60 min) starts to play an important role in As V immobilization but in decreased efficiencies of As V immobilization per unit iron. In the following stage (60–300 min), Fe II solid oxidation is suppressed and leads to As V release into solutions at >1.0 g·L −1 biochar. The decreasing efficiency of As V immobilization over time is attributed to the gradual release of DOC into solution from biochar particles, which significantly inhibit As V immobilization when Fe III solid is generated from Fe II solid oxidation in the vicinity of biochar surfaces. Specifically, 4.06 mg·L of biochar-derived DOC can completely inhibit the immobilization of As V in the 100 μM Fe II system under oxic conditions. The findings are crucial to comprehensively understand and predict the behavior of Fe II and As V with coexisting engineering black carbon in natural environments.
研究领域:
环境科学
·
地球化学
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产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Jiangtao Dong,Guoquan Wang,Yanli Zhao,Hexin Li,Haoming Li,Heng Zhang,Xinan Li,Li Xu,Feng Zhou,Runqiang Liu,Xinming Yin
BACKGROUND Pesticides in agriculture have played an important role and are irreplaceable in increasing the yield of crops and agricultural products. However, ultraviolet photodegradation is a crucial factor that leads to the inefficient usage of most traditional pesticides under sunlight. Rotenone (Rot), as a plant-derived insecticide, is easily degraded under ultraviolet light with loss of biological activity, which severely limits its wide application in the fields. It is therefore necessary to create new formulations to prevent the photodegradation of Rot under ultraviolet radiation. RESULTS Simple, intelligent, and degradable Rot@Fe III -tannic acid (Rot@Fe III -TA) nanocapsules were constructed using a general strategy, where Rot was coated in the core and Fe III -TA networks as the shell prepared via in situ coordination assembly on the interface of oil/water microemulsions. The prepared nanocapsules showed multidimensional stimuli-responsive controlled release performance, containing acidic/alkaline pH, glutathione, H 2 O 2 , and phosphate, which were closely relevant to the physiological environments of crops, and the Fe III -TA shell was finally disassembled in crops against bioaccumulation. Furthermore, the prepared nanocapsules showed remarkable rain washing and UV photolysis resistance on wheat leaf surface for availably wheat aphid control compared with that of technical Rot. In addition, the prepared nanocapsules appeared good safety on seed germination and seedling emergence, and were beneficial for the growth of wheat seedlings. CONCLUSION The prepared Rot@Fe III -TA nanocapsules could effectively prevent the photodegradation of Rot under ultraviolet radiation for wheat aphid control, which has potential application for Rot formulation exploitation in the field in the future. © 2025 Society of Chemical Industry.
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PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 38
·e55984
·
IF 2.7
Qi Zhang,Zihan Xiao,Zhiyuan Zhang,Jinxin Gao,Ruidong Xia,Junbiao Peng,Shimelis Admassie Molla
The investigation of fabricating ultra-compact solid-state dye laser (SSDL) using N'N-dimethylformamide (DMF) modified poly(methyl methacrylate) (PMMA) as the polymeric matrix was carried out. Atom transfer radical polymerization (ATRP) was introduced to manipulate the polymerization process of PMMA. By adjusting the additive amount of the Fe III complex (mixture of FeCl 3 and 2,2’-Bipyridyl (bPy)), the polymerization degree of PMMA was coordinated to gain better amplified spontaneous emission (ASE) properties of the embedded laser dye, Lumogen Orange 240 (LO). The ASE threshold of the Fe III complex catalyzed sample decreased as high as ~75%, from 225.3 ± 11.2 μJ cm −2 to 57.2 ± 2.9 μJ cm −2 , comparing to that measured in common PMMA matrix. Additionally, a secondary dye, Stilbene 420 was added in the system for sharing excess excitation energy and oxidization damage, to overcome the photostability problem caused by the oxygen-rich solvent, DMF. The operational lifetime of the resulted sample increased 200%, to the similar level of that without DMF component. Finally, by mechanical polishing and coating a thin film of silver at one end of the PMMA rod, an analogous Fabry-Perot resonator was structured within the rod. Decent laser emission was obtained from the resulted SSDL without complex external cavities.
研究领域:
材料科学
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光学工程
·
高分子化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xinyun Zhang,Jian Zhang,Haigang Fu,Minglu Sun,Chenying Zhou,Xiaowei Huo,Chuanshu He,Yang Liu,Peng Zhou,Bo Lai
Resulting from the extremely low rate constant of hydrogen peroxide (H 2 O 2 ) induced Fe III reduction, the slow kinetics of reactive oxygen species (ROS) generation in the second stage of Fenton process and high iron sludge output are the core issue for Fenton technology. In this research, manganese sulfide (MnS) was used as environmentally friendly co-catalyst to promote redox processes in Fenton and Fenton-like processes. MnS can significantly boost Fenton (Fe II /H 2 O 2 and Fe III /H 2 O 2 ) and Fenton-like (Fe III /PMS, Fe III /PDS, and Fe III /PAA) processes to degrade sulfamethoxazole (SMX), while MnS/Fe III /H 2 O 2 outperforms other peroxides involved processes. Qualitative and semi-quantitative ROS analysis reveals that hydroxyl radical is the dominating ROS in MnS/Fe III /H 2 O 2 , resulting in the oxidation of diverse organic contaminants. Based on characterizations and DFT calculations, mechanism investigation unveils that the dual reactive and low valent centers of manganese and sulfur can sustainably donate electron for reducing FeOH 2+ into Fe II with the concerted oxidation of Mn II and S 2− , while in-situ generated Fe II reacts with H 2 O 2 to produce hydroxyl radical for water decontamination. In addition, MnS manifests high co-catalytic stability during long-term operation, due to the electron-rich properties of the dual reactive centers of MnS (Mn II and S 2− ). Therefore, this study proposed a new boosted Fenton process by coupling MnS and Fe III /H 2 O 2 for controlling iron sludge output and realizing high-efficiency water decontamination.
研究领域:
环境化学
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水处理技术
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高级氧化工艺
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催化
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材料科学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 78
·63896-63902
·
IF 3.84
Qun Song,Wen-jie Zhao,He-xing Yin,Hong-zhen Lian
In this work, novel FeIII–tannic acid (TA) film-functionalized magnetic silica microspheres (designated Fe3O4@SiO2@FTA) were prepared via a facile deposition of one-step assembled FeIII–TA films on the surface of magnetic silica microspheres. The resulting Fe3O4@SiO2@FTA microspheres possessed strong magnetic responsiveness and good dispersity in aqueous solutions. We introduced low concentrations of standard peptide, standard protein, peptides in BSA tryptic digests and human urine to investigate the enrichment capability of the prepared nanocomposites. The enrichment process was very fast (only 5 min) and the peptide/protein–magnetic microsphere conjugates were readily separated by an external magnet. Moreover, the obtained conjugates can be directly analyzed by MALDI-TOF MS without any elution procedure. The enrichment performance was quite satisfying, indicating Fe3O4@SiO2@FTA microspheres as a universally applicable material for efficient and fast enrichment of peptides and proteins.
研究领域:
分析化学
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蛋白质组学
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材料科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Siqi Liu,Shanshan Cheng,Zhimeng Liu,Miaomiao Zheng,Hongyuan Wang,Supakorn Boonyuen,Hongyi Gao,Ge Wang
Reactive oxygen species (ROS)-mediated sterilization typically relies on continuous light irradiation or exogenous H 2 O 2 addition, limiting their practical utility under dark or resource-limited conditions. Herein, we rationally design an S-scheme MIL-100(Fe)/Zn 3 In 2 S 6 heterojunction (M 5 Z 1 –1@ZIS2) by in-situ growing Zn-doped MIL-100(Fe) on Zn 3 In 2 S 6 , achieving synergistic light-harvesting and ROS self-supply capabilities. The incorporation of Zn 3 In 2 S 6 enhances electron density around Fe 2+ sites while modulating Fe 3+ states, significantly improving O₂ activation and H 2 O 2 affinity. This unique electronic regulation enables the heterojunction to generate superoxide radical(·O₂ − )-dominated ROS even in the dark. Notably, visible-light pretreatment induces active In sites in Zn 3 In 2 S 6 to produce H 2 O 2 , which accumulates and sustains the FeII/FeIII redox cycle in the absence of light, driving continuous hydroxyl radical(·OH)-dominated ROS generation. Combined characterizations including X-ray photoelectron spectroscopy (XPS) and Electron Paramagnetic Resonance (EPR) confirm H₂O₂-mediated Fe 2+ regeneration and ROS persistence. The M 5 Z 1 –1@ZIS2 heterojunction exhibits exceptional antibacterial performance, achieving ≥99.9% inactivation of Escherichia coli ( E. coli ) within 1.5 h in the dark and 40 min under visible light. This work provides a strategy for designing self-sustaining catalytic systems that leverage light-driven H₂O₂ supply to enable day-night ROS functionality. Furthermore, M 5 Z 1 –1@ZIS2 loaded on polyvinylidene fluoride (PVDF) film can achieve an efficiency of over 99% for particulate matter (PM) pollutants at the wind speeds of 1.5 m/s and 0.5 m/s and reach a maximum adsorption efficiency of 99.5% for formaldehyde within 19 min, highlighting its potential for all-weather air purification via ROS-mediated environmental remediation.
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DOI
PubMed
高影响因子
ACS Nano
·
2018
·
IF 13.709
Tao Liu,Mingkang Zhang,Wenlong Liu,Xuan Zeng,Xianlin Song,Xiaoquan Yang,Xianzheng Zhang,Jun Feng
This study reports a family of photothermal materials, metal ion/tannic acid assemblies (MITAs). MITAs from FeIII, VIII, and RuIII afford excellent photothermal efficiency (η ≈ 40%). Sharply differing from the currently existing photothermal agents, MITAs are highlighted by merits including green synthesis, facile incorporation of diagnostic metal ions, and particularly topology-independent adhesion. Owing to the adhesion nature of MITAs, various kinds of MITA-based nanoengineerings are readily available via the self-adhesion of MITAs onto diverse templates, enabling MITAs well suited as a photothermal platform for versatile combination with other therapy approaches and imaging techniques. As a proof of concept, polymeric/inorganic nanoparticle/nanovesicle-supported FeIII-tannic acid (FeIIITA) is fabricated. The photothermal effect is shown to be unaffected by the template origin and type and FeIIITA thickness on the templates. We validate the potency of nanovesicle-supported FeIIITA (PNV@FeIIITA) for tumor-specific photoactivated utilizations, including NIR photothermal therapy with complete tumor elimination, photothermal imaging (PTI), and photoacoustic imaging (PAI) in addition to T1-MRI imaging. PNV@FeIIITA can be simultaneously equipped with functionalities, including T2-MRI imaging by additionally doping MnII and NIR fluorescence imaging by encapsulating a hydrophilic NIR fluoroprobe. MITA demonstrates unparalleled superiority as a photothermal platform in engineering multimodal theranostics for advanced applications.
研究领域:
材料科学
·
纳米技术
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诊疗学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）