CHEMOSPHERE
·
2024
·
IF 8.1
Jie Zhang,Xufei Wang,Yiwei Liu,Tao Jin,Liang Liu,Xiaodong Ma,Gengbo Ren
The efficiency and stability of the electrical activation of persulfate (PS) by transition metal-based cathode are controlled by the cycling of Fe(III)/Fe(II) and the mass transfer of PS. In this study, the mixed-valence MOFs catalyst (Fe II -MIL-53(Fe)) modified flow-through cathode was prepared for the first time. Fe II -MIL-53(Fe) was prepared by replacing part of the iron-oxygen network structure in MIL-53(Fe) with Fe(II), resulting in the formation of coordinated unsaturated iron centers (CUICs). The increase of the Fe(III) CUICs facilitated the conversion of Fe(III) to Fe(II). Furthermore, the cycling of Fe(III)/Fe(II) was further promoted by the electric field. Meanwhile, the hydrodynamic behavior of flow-through cathode was indicated by the computational fluid dynamics (CFD) simulation. The quenching experiments and electron paramagnetic resonance (EPR) results showed that several reactive specie (SO 4 ·- , ·OH, O 2 ·- and 1 O 2 ) were produce. In summary, this work provided an effective strategy for the efficient and stable electrical activation of PDS.
研究领域:
环境科学
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化学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Rui Wang,Peng Zhao,Ruiquan Yu,Jing Jiang,Ruifeng Liang,Gongyan Liu
The development of antibacterial and catalytic adsorbents is an ideal strategy to simultaneously remove antibiotics, antibiotic-resistant bacteria, and heavy metal ions from wastewater. Herein, a porous and renewable aerogel was prepared as a lightweight adsorbent by using cost-efficient collagen fibers (CF) from the leather industry. Further, the complexes of Fe 3+ ions with gallic acids modified silver nanoparticles (GA@AgNPs) were selected to sufficiently cross-link the hierarchical CF structure based on coordinated complexation, leading to good mechanical property of the resulted aerogel (AgNPs/Fe@CF). Benefiting from the incorporated AgNPs, AgNPs/Fe@CF aerogel exhibited high antibacterial activity against Tetracycline-resistant E. coli and Methicillin-resistant Staphylococcus aureus. Moreover, the cross-linked AgNPs could accelerate the redox cycle of Fe 3+ /Fe 2+ by facilitating electron transfer and thus enhance the activation of peroxymonosulfate to produce more • OH and SO 4 •− radicals. Therefore, this AgNPs/Fe@CF aerogel demonstrated synergetic Fenton-like catalytic degradation efficiency for 5 different antibiotics (over 90 % within 30 min). In addition, abundant hydroxyl and carboxyl groups on collagen fibers endow desired capacity (greater than70 mg/g) to the porous aerogel, which is able to remove Cr (Ⅵ), Ni (Ⅱ), and Pb (Ⅱ). This study explores a new pathway for the construction of multifunctional aerogel materials for enhancing the purification of wastewater.
研究领域:
环境科学
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材料科学
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生物学
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产品关联
DOI
高影响因子
DESALINATION
·
2023
·
IF 9.9
Lanlan Ye,Li Wang,Zhongao Wei,Shenghua Zhou,Zhikan Yao,Fuqiang Fan,Ying Mei
Tailoring nanofiltration (NF) membrane with low scaling potential and high energy efficiency is of critical importance to its practical implementation for groundwater remediation . In this study, interfacial polymerization was performed on the surface of an intermediate layer of TA-Fe/CNTs coated polyether sulfone (PES) substrate to obtain a loose NF membrane (TFNi-x) with negative surface charges and optimized water transport path for selective permeation of scaling ions and higher water permeance . The obtained TFNi-10 intermediated with a moderate amount of CNTs (10 μg/cm 2 ) exhibited 80.5 % higher selectivity of Ca 2+ over SO 4 2− and 156 % higher water permeance compared to the control TFC while maintaining a high PFOA rejection (∼97.3 %). For the gypsum scaling measurements, TFNi-10 showed better anti-scaling behavior and 40 % less pressure energy consumption for the same recovered water volume (2.2 L), resulting in the higher water recovery and lower energy cost of specific volume of the permeate. It was contributed by the synergistic effects of the strong affinity of TA-Fe to piperazine monomer and the gutter effect of TA-Fe/CNTs interlayer . Our results paved a new way of fabricating novel NF membrane with tailored intermediate layer for optimized interfacial polymerization to realizing groundwater remediation in a cost-effective manner.
研究领域:
环境科学
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材料科学
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水处理
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纳米技术
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
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IF 14.229
Qiangshun Wu,Hanpei Yang,Li Kang,Zhao Gao,Feifan Ren
In this work, a series of Fe-based metal-organic frameworks (Fe-MOFs) were synthesized and served as Fenton-like catalysts for tetracycline hydrochloride (TC–HCl) degradation. Herein, for the first time, we have demonstrated that visible light can accelerate Fe(II)/Fe(III) cycle in the photo-Fenton system based on iron-oxo (Fe-O) clusters in frameworks. Among these Fe-MOFs, MIL-101 possessed the highest activity mainly ascribed to its largest specific surface area and pore volume, and the most coordinatively unsaturated iron sites. The synergistic effect in the MIL-101/H 2 O 2 /visible light system was derived from the efficient separation and migration of photogenerated carriers. Due to the function of solid acid catalysts, MIL-101 extended effective pH range up to 10.2 and exhibited good reusability and stability. Hydroxyl radicals generated from H 2 O 2 coordinated at iron active sites were determined as the main reactive oxidative species and acceleration of Fe(II)/Fe(III) cycle was responsible for highly effective degradation of TC–HCl.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
POLYHEDRON
·
2017
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IF 1.926
Xiu-Mei Zhang,Jie Tang,Li-Na Wang,Di Yao,Qing Yu,Fu-Ping Huang,He-Dong Bian
Mimetics of superoxide dismutases (SOD), with certain ability to eliminate superoxide radicals under aerobic conditions, would be promising as drug candidates for antioxidant therapy. Many efforts have been devoted to synthesize small molecular compounds to mimic the functionality of natural SOD. In this paper, the Mn(III)/Co(III)/Fe(III) complexes have been synthesized with the Schiff base ligand (NaH 2 L), which was condensed from 2-hydroxynaphthalen-1-naphthaldehyde and 3,4-diaminobenzenesulfonic acid. The structures of complexes 1 and 3 have been determined by X-ray crystallographic method, and all the complexes have been investigated using FT-IR, MS. The binding constants between metal complexes and bovine serum albumin (BSA) have been determined by fluorescence spectroscopy. Meanwhile, we have synthesized 3 hybrid proteins through the interaction of the complexes and BSA. The SOD-like activity was tested by xanthine/xanthine oxidase method. The result shows that BSA molecule can increase the SOD activity of the transition metal complexes.
研究领域:
无机化学
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生物化学
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药学
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产品关联
DOI
高影响因子
Theranostics
·
2023
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IF 12.4
Wenjie Feng,Wanrui Shi,Yanqi Cui,Jiajun Xu,Shuwei Liu,Hang Gao,Shoujun Zhu,Yi Liu,Hao Zhang
Immunoadjuvants, as an indispensable component of tumor vaccines, can observably enhance the magnitude, breadth, and durability of antitumor immunity. However, current immunoadjuvants suffer from different issues such as weak immunogenicity, inadequate cellular internalization, poor circulation time, and mono-functional bioactivity. Methods: Herein, we construct Fe 3+ -Shikonin metal-phenolic networks (FeShik) nanomedicines as immunogenic cell death (ICD) stimulants and multifunctional immunoadjuvants for tumor vaccination. The multifunctionality of FeShik nanomedicines is investigated by loading ovalbumin (OVA) as the model antigen to construct OVA@FeShik nanovaccines or 4T1 tumor cell fragment (TF) as homologous antigen to construct TF@FeShik nanovaccines. In vitro examinations including GSH responsive, •OH generation, colloid stability, cellular uptake, cytotoxicity mechanism of ferroptosis and necroptosis, ICD effect, the promotion of DC maturation and antigen cross-presentation were studied. In vivo observations including pharmacokinetics and biodistribution, antitumor effect, abscopal effect, immune memory effect, and biosafety were performed. Results: The presence of FeShik nanomedicines can significantly prolong the blood circulation time of antigens, increasing the bioavailability of antigens. Upon phagocytosis by tumor cells, FeShik nanomedicines can disassemble into Fe 2+ and Shikonin in response to tumor microenvironments, leading to ICD of tumor cells via ferroptosis and necroptosis. Consequently, ICD-released autologous tumor cell lysates and pro-inflammatory cytokines not only stimulate DC maturation and antigen cross-presentation, but also promote macrophage repolarization and cytotoxic T lymphocyte infiltration, resulting in the activation of adaptive immune responses toward solid tumors. Conclusion: In a word, our FeShik supramolecular nanomedicines integrate bioactivities of ICD stimulants and immunoadjuvants, such as eradicating tumor cells, activating antitumor immune responses, modulating immunosuppressive tumor microenvironments, and biodegradation after immunotherapy. Encouraged by the diversity of polyphenols and metal ions, our research may provide a valuable paradigm to establish a large library for tumor vaccination.
研究领域:
纳米医学
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免疫学
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癌症研究
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药学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2021
·Vol. 11
·期 2
·2101926
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IF 9.933
Wenjie Feng,Wanrui Shi,Shuwei Liu,Huiwen Liu,Yi Liu,Pengfei Ge,Hao Zhang
Most of the antitumor chemotherapeutic drugs execute the therapeutic performance upon eliciting tumor cell apoptosis, which may cause chemoresistance of tumors. Design of novel drugs to eradicate apoptosis-resistant tumors via non-apoptotic cell death pathways is promising for improving the long-term chemotherapeutic efficacy. Herein, a Fe(III)-Shikonin metal-polyphenol-coordinated supramolecular nanomedicine for combined therapy of tumor via ferroptosis and necroptosis is designed. The construction of the nanomedicine based on the coordinated self-assembly between Fe 3+ and Shikonin not only overcomes the shortcomings of Shikonin including its low bioavailability and high toxicity toward normal tissues, but also integrates the theranostics functions of Fe ions. Under the exposure of the high concentration of glutathione (GSH) in tumor cells, the as-prepared nanomedicine will disassemble into Fe 2+ and Shikonin, followed by stimulating the tumor cell death through ferroptosis and necroptosis. In addition, benefiting from the stealth effect of polyethylene glycol (PEG) and the targeting ability of cyclo(Arg-Gly-Asp- d -Phe-Lys) (cRGD) to α v β 3 -integrin, NH 2 -PEG-cRGD-modified nanomedicine exhibits a GSH-responsive therapy toward 4T1 tumor in vivo and self-enhanced longitudinal relaxation (T 1 )-weighted imaging property. Since the self-assembly of natural Shikonin and human body-necessary Fe element is facile and feasible, the work may provide a promising supramolecular nanomedicine for next-generation chemotherapeutic applications.
研究领域:
纳米医学
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肿瘤学
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药物化学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Sitao Wang,Zhijie Liu,Bolun Pang,Yuting Gao,Santu Luo,Qiaosong Li,Hailan Chen,Michael G Kong
Antibiotics are widely used to treat or prevent infectious diseases in human and veterinary medicine. Excessive residues in the aquatic environment lead to increasingly prominent antibiotic pollution; therefore, it is urgent to develop sustainable strategies for rapidly degrading antibiotics. In this study, a highly synergetic effect for norfloxacin (NOR) remediation is achieved by coupling underwater bubble plasma formation with a Fe (III)–S (IV) system due to the efficient utilization of reactive species in chain reactions. The degradation rate using synergetic approach can reach 76.4% within 50 min discharge, and further increases significantly to 94.4% after 5 h post-discharge. The effects of pulsed peak voltage and Fe (III)/S (IV) dosage on NOR removal are characterized. The existence of hydroxyl radicals ( • OH) and sulfate radicals (SO 4 •− ) are proved by electron spin resonance spectrometer (ESR) during degradation. Furthermore, radical scavenger experiments demonstrate that • OH and SO 4 •− play a crucial role in degradation. Underwater bubble plasma provides the oxic and acidic liquid environment for the Fe (III)–S (IV) system to accelerate the self-perpetuating chain reactions. These reactions not only introduce SO 4 •− and generate more • OH during plasma-on, but also induce their regeneration and further prolong the degradation process during plasma-off through plasma-generated effects. Finally, the degradation intermediates of NOR are identified, and a possible degradation pathway is proposed. The possible contribution weight of each approach on the degradation rate is speculated. These new findings offer promising applications for developing a technology with real potential for the treatment of organic compounds in industrial wastewater treatment.
研究领域:
环境科学
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化学工程
·
等离子体化学
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污水处理
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2024
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IF 5.9
Yujiang Huang,Tong Hu,Sichen Li,Wenjun Zhou
Harnessing the redox potential of biochar to activate airborne O 2 for contaminant removal is challenging. In this study, ferrihydrite (Fh) modified the boron (B), nitrogen (N) co-doped biochars (BCs) composites (Fh/B(n)NC) were developed for enhancing the degradation of a model pollutant, tetracycline (TC), merely by airborne O 2 . Fh/B(3)NC showed excellent O 2 activation activity for efficient TC degradation with a apparent TC degradation rate of 5.54, 6.88, and 22.15 times that of B(3)NC, Fh, and raw BCs, respectively, where 1 O 2 and H 2 O 2 were identified as the dominant ROS for TC degradation. The B incorporation into the carbon lattice of Fh/B(3)NC promoted the generation of electron donors, sp 2 C and the reductive B species, hence boosting Fe(III) reduction and 1 O 2 generation. O 2 adsorption was enhanced due to the positively charged adsorption sites (C- B + and N C + ). And 1 O 2 was generated via Fe(II) catalyzed low-efficient successive one-electron transfer (O 2 → O 2 ·− → 1 O 2 , H 2 O 2 ), as well as biochar catalyzed high-efficient two-electron transfer (O 2 → H 2 O 2 → 1 O 2 ) that does not involve . O 2 − as the intermediate. Moreover, Fh/B, N co-doped biochar showed a wide pH range, remarkable anti-interference capabilities, and effective detoxification. These findings shed new light on the development of environmentally benign BCs materials capable of degradading organic pollutants.
研究领域:
环境科学
·
材料科学
·
化学工程
·
污染控制
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Zhi Luo,Yusheng Wu,Dongmiao Qin,Shuo Meng,Chujie Zeng,Biyang Deng
A luminescent reagent, 3,4,9,10-perylenetetracarboxylic acid (PTCA), was linked to a metal–organic framework (MOF) Fe(III)-MIL-88B-NH 2 through an amide reaction to form a [email protected] (III)-MIL-88B-NH 2 complex, and then gold nanoparticles (AuNPs) were grown in situ. Thus, the [email protected] (III)-MIL-88B-NH 2 @Au electrochemiluminescence (ECL) probe was obtained. The MOF of 2-aminoterephthalic acid with large specific surface area, pore sizes, and structures, which served both as the carrier and a co-reaction promoter, promoted the conversion of more S 2 O 8 2- into SO 4 •- , further enhancing the ECL signal of PTCA. An electrochemiluminescence resonance energy transfer (ECL-RET) platform was designed for the ultrasensitive and highly selective detection of cystatin C (CysC). The developed ECL-RET biosensor presented a linear range from 0.01 pg/mL to 100 ng/mL and a detection limit of 2.2 fg/mL (S/N = 3). Moreover, all the results showed that the developed ECL-RET biosensor broadened the application in the fields of biosensing and medical diagnosis.
研究领域:
分析化学
·
纳米技术
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生物医学工程
·
材料科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2014
·
IF 2.354
Liuchun Zheng,Chenggang Wang,Yuehong Shu,Xiaomin Yan,Laisheng Li
A novel diatomite/chitosan–Fe(III) composite (Fe(III)/Cs@Dia) was synthesized successfully to use as an adsorbent for the removal of anionic azo dye. The composite was further characterized by SEM, FTIR, XPS, and C 13 / Si 29 NMR, and then the adsorption batch experiments were carried out as a function of initial dye concentrations, pH values, contact time and temperatures to determine the adsorption capacities of Fe(III)/Cs@Dia. Compared with several typical isotherm models, the adsorption isotherms were all best-fitted by the Langmuir model, with a maximal 2GL dye uptake of 1250 mg g −1 at pH 6 and 298 K. In addition, kinetic studies followed the pseudo-second-order model and thermodynamic studies revealed that the uptake was exothermic in nature. The adsorption mechanisms were proposed with observation that electrostatic interaction and complexation played the key roles in adsorption process. Moreover, the composite also showed favorable adsorption properties for other four anionic azo dyes (direct yellow R, congo red, methyl orange and direct red 23).
研究领域:
环境科学
·
化学工程
·
材料科学
·
废水处理
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Huiping Zeng,Jiahao Wu,Yong Chen,Jiongru Liang,Simin Li,Su Han,Dong Li,Jie Zhang
Developing sustainable, low‐carbon technologies to remove antibiotics from wastewater is vital to reduce ecological and health risks and meet dual carbon targets of peaking and neutrality. In this work, a surface-modified Platanus leaf powder (PLP) adsorbent was fabricated via metal-phenolic network (MPN) assembly. At pH 8, Fe(III)-tannic acid (TA) coordinated MPNs self-assembled to generate a supramolecular nanocoating on PLP, yielding the Fe(III)-Tannic networks on PLP (FTN@PLP) composite. Batch adsorption studies demonstrated an impressive maximum tetracycline (TC) uptake of 118.9 mg/g. The removal performance was systematically investigated by varying the Fe/TA ratio, pH, adsorbent dosage, initial concentration, coexisting ions, and humic acid. Adsorption kinetics, isotherm modeling and characterization study revealed that TC uptake was driven by a cooperative mechanism involving electrostatic attraction, Fe 3+ complexation, and hydrogen bonding. Additionally, FTN@PLP effectively removed representative dye pollutants. When evaluated for tetracycline (TC) removal over five successive adsorption–desorption cycles, the adsorbent maintained regeneration efficiencies exceeding 80 %. Life cycle assessment (LCA) indicated that the preparation route has a low environmental impact; leveraging plant polyphenols and biomass waste provides a promising pathway for carbon-reduction and biomass valorization. This novel strategy integrates material innovation with stewardship, providing a solution for wastewater treatment under low-carbon guidelines.
研究领域:
环境科学
·
化学工程
·
材料科学
·
可持续技术
·
水污染控制
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）