INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xiaoyu Yang,Yuhui Ci,Peng Zhu,Tianying Chen,Feiyun Li,Yanjun Tang
Biopolymer-based hydrogels have received great attention in wastewater treatment due to their excellent properties, e.g. , high adsorption capacity, fast kinetics, reusability and ease of operation. In the present work, cellulose-chitosan/β-FeOOH composite hydrogels were prepared via co-dissolution and regeneration process as well as hydrothermal in situ synthesis of β-FeOOH. Effect of β-FeOOH loading on the properties of the composite hydrogels and the removal efficiency of methyl orange (MO) was investigated. Results showed that β-FeOOH was uniformly loaded onto the hydrogel framework, and the nanoporous structure of composite hydrogels could increase not only the effective contact area between β-FeOOH and the pollutants but also the active sites. Moreover, the increased β-FeOOH loading led to the enhanced MO removal rate under light conditions. When the loading time was extended from 6 h to 9 h, the MO removal rate increased by 21%, which can be mainly due to the photocatalytic degradation. In addition, MO removal rate reached 97.75% within 40 min under optimal conditions and attained 80.81% after five repetitions. The trapping experiment and EPR results indicated that the main active species were hydrogel radicals and holes. Consequently, this work provides an effective preparation approach for cellulose-chitosan/β-FeOOH composite hydrogel with high adsorption and photocatalytic degradation, which would hold great promise for wastewater treatment applications.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Simin Huang,Yizhong Yuan,Huimei Yu,Jinyu Sun,Xiaohui Tian,Chunhua Cai,Yuxuan Han,Yao Zhang
The remediation of wastewater contaminated with heavy metals remains a serious challenge due to the continuing threats posed to ecosystems and human health. While conventional methods such as membrane filtration and flocculation exist, developing sustainable adsorbents with high capacity and reusability is imperative. Therefore, we propose a novel strategy to overcome the limitations of natural polymer-based hydrogels by integrating β-FeOOH nanoparticles into sodium alginate matrices. FTIR, XPS and TG reveal that the incorporation of β-FeOOH not only increases the adsorption active sites but also improves the thermal stability of the composite hydrogels. The composite hydrogel exhibits exceptional adsorption capacity (581.40 mg/g). Crucially, the material maintains over 85 % of its initial efficiency after five adsorption-desorption cycles, demonstrating strong structural integrity and practical applicability. This work provides a mechanistic framework for designing multifunctional hydrogels through nanomaterial hybridization, offering a sustainable pathway for water purification technologies.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Environmental Sciences
·
2021
·
IF 5.565
Yi Zhang,Qiong Tang,Yifan Sun,Chenxu Yao,Zhen Yang,Weiben Yang
Metal oxide/hydroxide-based nanocomposite adsorbents with porous supporting matrices have been recognized as efficient adsorbents for phosphorus recovery. Aiming at satisfying increasingly restrictive environmental requirements involving improving metal site utilization and lowering metal leakage risk, a glycol-solvothermal confined-space synthesis strategy was proposed for the fabrication of FeOOH/anion exchanger nanocomposites (Fe/900s) with enhanced metal site utilization and reduced metal leakage risk. Compared to composites prepared using alkaline precipitation methods, Fe/900s performed comparably, with a high adsorption capacity of 19.05 mg-P/g with an initial concentration of 10 mg-P/L, a high adsorption selectivity of 8.2 mg-P/g in the presence of 500 mg-SO 4 2− /L, and high long-term resilience (with a capacity loss of ~14% after five cycles), along with substantially lower Fe loading amount (4.11 wt.%) and Fe leakage percentage. Mechanistic investigation demonstrated that contribution of the specific FeOOH sites to phosphate adsorption increased substantially (up to 50.97% under the optimal conditions), in which Fe(III)-OH was the dominant efficient species. The side effects of an excessively long reaction time, which included quaternary ammonium decomposition, FeOOH aggregation, and Fe(III) reduction, were discussed as guidance for optimizing the synthesis strategy. The glycol-solvothermal strategy provides a facile solution to environmental problems through nanocrystal growth engineering in a confined space.
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
PubMed
高影响因子
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
·
2016
·Vol. 15
·期 8
·1046-1053
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IF 2.235
Zhang Guangshan,Wang Qiao,Zhang Wen,Li Tian,Yuan Yixing,Wang Peng
This work investigated the effects of organic acids and initial solution pH on the photodegradation of BPA in a photo-Fenton-like process using α-FeOOH as a catalyst. The results showed that the addition of different organic acids affected the formation of the ferric-carboxylate complexes and free radicals, which in turn varied the photodegradation efficacy. Compared with the other acids, oxalic acid (OA) was found to be the most effective in enhancing the photodegradation of BPA, which strongly depends on the OA concentration. Particularly, the addition of OA could significantly extend the working pH from an acidic to a neutral range for the photocatalytic process and thus the acidification pretreatment may not be needed. A high photocatalytic degradation of BPA occurred at pH 6.0, due to the formation of ferric-oxalate complexes and ˙OH radicals in the synergistic interactions of OA and α-FeOOH. This finding highlights that the oxalate-promoted photo-Fenton-like process using the α-FeOOH catalyst may be used for wastewater treatment without pH adjustment.
研究领域:
环境科学
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化学工程
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DOI
PubMed
高影响因子
CARBON
·
2021
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IF 9.594
Xiaocui Wu,Qingshan Zhao,Fang Guo,Guangsen Xia,Xiaojie Tan,Huiyuan Lv,Zhaoxuan Feng,Wenting Wu,Jingtang Zheng,Mingbo Wu
Merging photocatalysis with Fenton-like reaction provides a promising synergetic advanced oxidation technology for water treatment, whereas the rational design of efficient cooperative photo-Fenton system still remains a great challenge. In this study, a ternary α-FeOOH/carbon dots/porous g-C 3 N 4 (α-FeOOH/CDs/p-GCN) composite is developed as visible-light-driven heterogeneous photo-Fenton catalyst for contaminated water remediation. α-FeOOH nanorods are in-situ grown on porous g-C 3 N 4 substrates, among which CDs are intercalated as high-speed electron transmission bridges, simultaneously preventing the photogenerated electron-hole recombination and accelerating the Fe 3+ /Fe 2+ redox cycle. The distinctive heterostructure and synergetic catalytic effect endow α-FeOOH/CDs/p-GCN with superior efficiency, reusability , and universality for recalcitrant pollutant elimination, the reaction rate of which is nearly 13.6, 7.3, 3.4, 1.4, and 5.1 times higher than that of α-FeOOH, bulk g-C 3 N 4 (b-GCN), p-GCN, α-FeOOH/p-GCN, and α-FeOOH/CDs/b-GCN, respectively. The FeOOH/CDs/p-GCN also demonstrates excellent tolerance to realistic environmental matrices including deionized water, sea water, river water, wastewater, and underground water. HO• and •O 2 − radicals are proved to be the predominant contributors in the photo-Fenton system. This work provides an efficient synergetic visible-light-driven photo-Fenton catalyst possessing great potential for practical contaminated water remediation.
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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 30
·期 23
·64547-64564
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IF 5.8
Yang Ling,Han Fuhu,Muhammad Yaseen,Liu Yu,Zhao Zhenxia,Kong Hao,Li Jing,Zhang Honggang
Hydrophobic modification of bagasse fibers (BFs) through a green approach can promote its reuse in asphalt and enhance the utilization value of agricultural and forestry waste in road engineering. In contrast to traditional chemical modification, this study reports a new method for the hydrophobic modification of BFs using tannic acid (TA) and the in situ growth of FeOOH nanoparticles (NPs), resulting in FeOOH-TA-BF, which is used to prepare styrene–butadiene styrene (SBS)–modified asphalt. The experimental results show that the surface roughness, specific surface area, thermal stability, and hydrophobicity of the modified BF are improved, which is beneficial for enhancing the interface compatibility with asphalt. Specifically, compared with BF/SBS-modified asphalt, FeOOH-TA-BF/SBS-modified asphalt exhibits 39.21% and 23.26% increase in the elastic modulus G′ and viscous modulus G″, respectively, at the optimal dosage of 2.5%, corresponding to 6.15-fold and 7.13-fold increase in the fatigue life at 2.5% and 5.0% strain respectively, and 22.0% improvement in shear resistance performance. In the meantime, 2.5-fold enhancement of the storage stability. Therefore, this study provides a simple, environmentally friendly, and efficient hydrophobic modification method that is of great significance for promoting the resource utilization of solid waste BF. Graphical Abstract
研究领域:
土木工程
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环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2024
·
IF 3.2
Lulan Wang,Hua Yang,Linhua Wang,Xu Sun,Lingfeng Gao,Yunwu Li,Jianmin Dou
The development of low-cost, earth-abundant electrocatalysts for oxygen evolution reactions (OER) is of vital significance to alleviate the energy shortage, but it still faces challenges due to the sluggish kinetics of the four-electron transfer process. We synthesized and characterized a series of FeOOH-decorated hollow-cubic Ni x S y electrocatalysts (Ni x S y /FeOOH) with the morphology maintained after the sulfuration treatment and Fe dip-coating. The stoichiometric ratios, heating temperatures, and Fe inputs can affect the morphology and catalytic activity. The as-prepared optimum Ni x S y /FeOOH electrocatalyst exhibited the lowest OER overpotential (250 mV) at 20 mA cm −2 and Tafel slope (53.07 mV dec −1 ) in 1.0 M KOH and maintained long-term stability and good durability. The outstanding OER performance is likely attributed to the synergistic interaction and electron transfer between FeOOH and Ni x S y species. Therefore, the present work provides a promising route for the design and synthesis of stable and efficient OER electrocatalysts.
研究领域:
电化学
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材料科学
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能源材料
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产品关联
DOI
高影响因子
Small Methods
·
2023
·
IF 12.4
Yue Wang,Yang Deng,Hong Xia,Ruizhong Zhang,Jia Liu,Haixia Zhang,Yajing Sun,Zhen Zhang,Xiaoquan Lu
The triazine-based covalent organic frameworks (tCOF), an intriguing subtype of COFs, are expected as highly promising photocatalysts for various photocatalytic applications owing to their fully conjugated structures and nitrogen-rich skeletons. However, the inherent hydrophobicity and fast recombination of photoexcited electron-hole pairs are two main factors hindering the application of tCOF in practical photocatalytic reactions. Here, a post-synthetic modification strategy to fabricate superhydrophilic tCOF-based photocatalysts is demonstrated by in situ growing FeOOH clusters on TaTz COF (TaTz-FeOOH) for efficient photocatalytic oxidation of various organic pollutants. The strong polar FeOOH endows TaTz-FeOOH with good hydrophilic properties. The well-defined heterogeneous interface between FeOOH and TaTz allows the photoelectrons generated by TaTz to be consumed by Fe (III) to transform into Fe (II), synergistically promoting the separation of holes and the generation of free radicals. Compared with the unmodified TaTz, the optimized TaTz-FeOOH (1%) shows excellent photocatalytic performance, where the photocatalytic degrade rate ( k ) of rhodamine B is increased by about 12 times, and the degradation rate is maintained at 99% after 5 cycles, thus achieving efficient removal of quinolone antibiotics from water. This study provides a new avenue for the development of COF-based hydrophilic functional materials for a wide range of practical applications.
研究领域:
材料科学
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环境科学
·
光催化技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2023
·
IF 10.8
Mengsi Zhang,Lu Wang,Hao Jin,Nan Zhao,Yi Liu,Shijie Lan,Shuwei Liu,Hao Zhang
Metal-phenolic networks (MPNs) have been conventionally formed by the coordination of metal ions and polyphenols, which can responsively release metal ions and polyphenols under the trigger of tumor microenvironment (TME), showing high potential in the field of antitumor. However, MPNs are mainly limited to multi-valency polyphenols, and the unavailability of single valency polyphenols greatly hinders their applications even though they have excellent antitumor activity . Herein, we demonstrate a FeOOH assisted preparation method for MPNs antitumor reagent by introducing the complexes of Fe 3+ , H 2 O and polyphenol (Fe(H 2 O) x -polyphenol y ) in the preparation process, which overcomes the shortage of single valency polyphenols. Taking apigenin (Ap) as an example, Fe(H 2 O) x -Ap y complexes are foremost formed, in which the Fe(H 2 O) x is capable of hydrolyzing to generate FeOOH, thus producing Fe 3+ -Ap networks-coated FeOOH nanoparticles ( [email protected] NPs). Under the stimulation of the TME, [email protected] NPs could release Fe 2+ and Ap, realizing ferroptosis and apoptosis for tumor combination therapy. In addition, FeOOH can shorten transverse relaxation time, acting as a T 2 -weighted magnetic resonance imaging contrast agent . The current efforts provide an alternative strategy for constructing MPNs by exploiting single valency polyphenols, which strengthens the potential of MPNs in antitumor applications.
研究领域:
纳米技术
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癌症研究
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材料科学
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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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jing Lv,Hui Ye,Guodong Yang,Shurui Han,Han Zhang,Yuzhong Zhang
The utilization of two-dimensional (2D) materials to construct heterogeneous catalysts provides opportunities for environmental remediation, while the incorporation of porous structures can further enhance catalytic performance. In this work, a porous 2D FeOOH/fluorine-cerium (F-Ce) nanosheet composite was designed and synthesized by a simple impregnation-precipitation method. The unique 2D porous structure of F-Ce promoted the high dispersion of FeOOH quantum dots (QDs) (∼1.4 nm) and their tight integration to form S-scheme heterojunctions. This structure offered a greater number of active sites, and significantly improved the capacity of light absorption and the separation and migration efficiency of photogenerated carriers, thus improving catalytic activity. This catalyst achieved a phenol removal rate of 98.1 % within 20 min during the photo-Fenton reaction, which significantly surpasses pure FeOOH (32.9 %) and F-Ce (21.7 %) alone. In particular, the optimized 14FeOOH/F-Ce catalyst achieved more than 95.0 % degradation efficiency within a remarkably short period of 5 min. Mott Schottky and in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) studies demonstrated that the S-scheme charge transfer mechanism of this heterojunction synergistically enhanced the catalytic activity of the Fenton-like reaction. This study provides valuable insights for designing efficient 2D porous heterojunction catalysts for visible-light-driven Fenton applications.
研究领域:
环境科学
·
催化材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Analytical Methods
·
2025
·
IF 3
Na Guanqiong,Chen Ping,Qian Yanya,Meng Danqun,Liu Zhipeng,Shan Yujuan
Traditional fluorescent immunosensors usually suffer from high background signals in food samples, which significantly reduces their detection sensitivity. In this study, δ-iron oxyhydroxide (δ-FeOOH) nanosheets with anti-bacitracin zinc (BAC) monoclonal antibodies (mAb) were conjugated as fluorescence receptors, while amino-functionalized carbon quantum dots (CQDs) as fluorescence donors for BAC. A novel fluorescence immunoassay was developed that eliminated background noise based on the “turn on” principle. Upon introduction of BAC into the sample, the nano-assembled probe showed an increase in fluorescence recovery, leading to higher fluorescence intensity at elevated BAC concentrations. This strategy exhibited a linear response for BAC concentrations ranging from 5 to 40 ng/mL, with a limit of detection (LOD) of 2.04 ng/mL. Our findings present a promising immunological approach for the sensitive and selective detection of BAC residues in food.
研究领域:
分析化学
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食品科学
·
生物医学工程
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zhihao Xu,Cheng Chen,Qizhen Wu,Rui Yang,Chenguang Gao,Mingxue Liu,Ruzhen Xie,Wenyuan Hu,Ying Xiong,Faqin Dong
The α-FeOOH (021) crystal facet has a high density of active sites, and as a reactive facet, it has good adsorption of pollutants and good photocatalytic performance. In this paper, nano α-FeOOH with different (021)/(110) crystal facet ratios was prepared using crystal facet inducers (ethanol, ethylene glycol, and glycerol) via a hydrothermal method, with a (021)/(110) crystal facet ratio reaching 16% in the FG-2 sample. The results of photocatalytic experiments show that this sample’s removal rate of Cr(VI) reaches 60.70% in 4 h, which is 61.00% higher than for FC with unregulated crystal facets, and the apparent normalized photocatalytic reaction rate constant is 8.28 times higher than for FC. Kelvin probe force microscope characterization (KPFM) results and density functional theory (DFT) calculation show that FG-2’s higher rate of removal of Cr(VI) was due in large part to the different electric potentials of the (021) and (110) crystal facets. When the ratio of (021)/(110) crystal facets was changed, different electric fields resulted. Meanwhile, the high site density of the (021) crystal facet created high coordination efficiency and in addition higher reactivity resulted from the chromium ion’s lower adsorption energy that the coupling effect produced.
研究领域:
材料科学
·
环境科学
·
理论化学
✓ 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）