JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yunfei Sun,Yaping Wang,Yun Chen,Junchao Qian,Feng Chen,Zelong Zhou,Chaoya Han,Yu Shi,Xiaowang Lu,Chaoying Ni
Bisphenol A (BPA), a prevalent organic pollutant found in wastewater environment, is notorious for its resistance to natural degradation, raising significant ecological and human health concerns. In this study, a “signal-on” photoelectrochemical aptasensing system was designed for detecting BPA in real water samples with high specificity and sensitivity. One-dimensional (1D) β-FeOOH nanobelts were synthesized on a two-dimensional (2D) porous carbon nitride (g-C 3 N 4 ) through an in-situ growth procedure. The β-FeOOH/g-C 3 N 4 nanocomposites demonstrated superior photoelectric conversion efficiency due to several factors: (i) The 1D nanobelt-like structure of β-FeOOH shortens the charge transfer path within the nanocomposite, enabling directional and rapid migration of photoinduced charges from the interior to the surface. (ii) β-FeOOH possesses strong visible absorption capabilities, enhancing the utilization of g-C 3 N 4 under photoexcitation, resulting in the generation of numerous photo-induced carriers. (iii) The in-situ formation of the β-FeOOH/g-C 3 N 4 heterojunction establishes an intimate interfacial contact, facilitating the rapid separation and transfer of charges between β-FeOOH and g-C 3 N 4 . A photoelectrochemical aptasensing platform based on the photoactive material of β-FeOOH/g-C 3 N 4 detects BPA with reduced photocurrent owing to the presence of BPA-aptamer macromolecules on the electrode surface. This BPA detection system exhibits excellent linearity over a wide concentration range from 10 pM to 10 nM, with high sensitivity (a detection limit of 3.5 pM), stability, specificity, and repeatability. Furthermore, this research offers a straightforward and rapid sensing platform for monitoring BPA enriched water environments.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Maiyong Zhu,Qi Chen,Jingjing Tang,Wenjing Wei,Songjun Li
The combination of carbon and iron oxide has recently attracted increasing research interest in energy conversion and storage . Here, the hybrid nanostructure with N, S-codoped Fe 3 O 4 supported/embedded on/in N-doped porous carbon (NS-Fe 3 O 4 @N-PC) nanococoon was prepared via direct pyrolysis of core@shell β-FeOOH@Polypyrrole (β-FeOOH@PPy) composite. Benefiting from the synergistic effect of high redox activity of NS-Fe 3 O 4 and excellent electrical conductivity as well as good mechanical stability of N-PC, the obtained NS-Fe 3 O 4 @N-PC exhibited an enhanced specific capacitance of 866 F/g at 1 A/g along with excellent rate capability (383 F/g at 10 A/g) and improved cycling stability (78.2% of initial capacitance retained after 5000 cycles test) while applied as electrode materials of supercapacitor . Significantly, the asymmetric supercapacitor devices assembled using NS-Fe 3 O 4 @N-PC as anodes and commercial carbon nanotubes as cathodes can achieve a large stack energy density of 38.9 Wh/Kg at a stack power density of 700.2 W/Kg along with good stability (only 8.4% decay of initial capacitance after 5000 cycles at 4 A/g). The present work may provide a general approach for fabricating other metal oxide@carbon hybrid nanomaterials for various applications.
研究领域:
材料科学
·
能源存储与转换
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产品关联
DOI
高影响因子
WATER ENVIRONMENT RESEARCH
·
2026
·Vol. 98
·期 4
·e70380
·
IF 2.8
Shifeng Li,Yan Zhou,Shiyu Wang,Shuhua Yao,Min Xiao
Arsenic contamination in water, particularly from highly toxic arsenite (As(III)), continues to pose a significant global public health challenge due to its high mobility and resistance to conventional treatment methods. This study presents an innovative core-shell β-FeOOH@MnO 2 nanocomposite, which synergistically integrates MnO 2 nanosheets to oxidize As(III) into adsorptive arsenate (As(V)) and β-FeOOH to facilitate the efficient uptake of As(V). This approach addresses common limitations such as particle aggregation and suboptimal adsorption observed in pure MnO 2 systems. The nanocomposite, synthesized by hydrothermal methods, exhibits a doubled surface area of 172.95 m 2 /g, offering numerous active sites and mesopores conducive to rapid mass transfer. Under optimized conditions (pH 3.0, 0.4-g/L dosage), the nanocomposite achieved 98.39% removal of As(III) and a maximum adsorption capacity of 50.26 mg/g at 25°C, following pseudo-second-order kinetics and endothermic chemisorption. Characterization techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), confirmed the synergistic mechanism, wherein MnO 2 oxidizes As(III) through the reduction of Mn 4+ to Mn 3+ , and the resulting As(V) is adsorbed by β-FeOOH. This advancement offers a cost-effective and efficient solution for improved arsenic remediation in water treatment applications. Graphical A core-shell β-FeOOH@MnO 2 nanocomposite effectively removes toxic arsenite by oxidizing mobile As(III) to adsorptive As(V) and adsorbing it, achieving high removal efficiency.
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2025
·
IF 2.3
Yongfei Zhu,Jiayi Li,Shujuan Yu
The oils and organic dyes in wastewater have caused serious damage to the environment, thus, it is very urgent to develop a multifunctional wastewater treatment material by a simple and environment-friendly method. Herein, a layer of polyvinyl alcohol (PVA)-Fe3+-citric acid (CA) crosslinked structure combined with β-FeOOH particles was firmly anchored on a cotton fabric (CF) through a simple dip-coating and in-situ mineralization method to obtain a robust multifunctional superhydrophilic/underwater superoleophobic CF (β-FeOOH/PVA/Fe-CA-CF). β-FeOOH/PVA/Fe-CA-CF could separate different immiscible oil/water mixtures with a separation efficiency of exceeding 98.26% and high flux of 25,347 L/m2·h only by gravity, especially, it also could separate oil-in-water emulsions with a separation efficiency up to 94.07%. Moreover, β-FeOOH/PVA/Fe-CA-CF displayed an outstanding photocatalytic degradation capacity to organic dyes and the removal efficiency of methylene blue (MB) could reach 98.5% in 20 min. Meanwhile, the modified CF exhibited satisfactory chemical stability, high temperature and abrasion resistance. More importantly, β-FeOOH/PVA/Fe-CA-CF possessed excellent reusability, whose separation efficiency for petroleum ether/water mixture could reach 96.5% after 20 cycles and removal efficiency of MB was still up to 89% after 12 cycles. Therefore, this work provides a facile strategy for the design of multifunctional biodegradable wastewater treatment materials with high durability.
研究领域:
环境科学
·
材料科学
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化学工程
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纳米技术
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2020
·Vol. 305
·期 10
·2000137
·
IF 3.853
Ting Chen,Xiu Wang,Chaohua Peng,Guorong Chen,Conghui Yuan,Yiting Xu,Birong Zeng,Weiang Luo,Krishnasamy Balaji,Denise F. S. Petri,Lizong Dai
A metallo-supramolecular polymer poly{4-(((3,4-dihydroxyphenyl)(6-oxidodibenzo[c,e][1,2]oxaphosphinin-6-yl)methyl)amino)phenyl-2,2-dimethylbutanoate} (HP) is synthesized through a Kabachnik–Fields reaction. Then HP is coated on the surface of β-FeOOH by coordination interaction to generate organic–inorganic hybrid β-FeOOH@HP (Fe@P) nanorods, which are used for preparing flame retardant epoxy resin (EP) nanocomposites. The structure of HP is characterized by nuclear magnetic resonance and fourier transform infrared spectroscopy, the morphology and composition of β-FeOOH and Fe@P nanorods are also studied by scanning electron micrograph and transmission electron microscope instruments. With the presence of 2 wt% of Fe@P, the limiting oxygen index value of EP nanocomposite increased to 32.8% with UL-94 vertical burning V-1 rating, and 31.4% of flexural strength enhancement, indicating the improvement of both flame retardant and mechanical properties with low loading amount. The reduction of total smoke production, average CO and CO 2 yield for EP nanocomposites with 0.5 wt% of Fe@P reflected the good smoke suppression. The flame retardant mechanism of Fe@P is also discussed.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 12
·e53656
·
IF 3
Wenzong Xu,Yi Zhang,Liangjie Fan,Zhongqiong Qin,Zhihui Zhang,Ziwei Bian
Silicone rubber with its odorless and non-toxic, high and low temperature resistance and other advantages is widely used in many fields, but its shortcomings of flammability and low thermal conductivity limit its application and development. Therefore, the research on flame retardant and thermal conductive silicone rubber is practically valueable. In this study, iron oxyhydroxide (β-FeOOH) was synthesized on carbon nanotubes (CNTs) by in situ growth and added to silicone rubber after surface modification with γ-aminopropyltriethoxysilane (KH550). The results showed that the limiting oxygen index (LOI) of methyl vinyl silicone rubber (VMQ) with the addition of one part of KH550@CNTs-β-FeOOH increased to 29.8%, its peak heat release rate (pHRR) and total heat release (THR) decreased by 40.1% and 30.2%, respectively, and its thermal conductivity increased to 0.3680 W/m·k. The flame-retardant performance and thermal conductivity of the VMQ composite were significantly improved. The improvement of its flame retardancy was mainly due to the catalytic carbonization of CNTs and β-FeOOH, which promoted the formation of dense carbon layers. The carbon layer insulates the exchange of oxygen and combustible gases. In addition, the thermal conductive network constructed by KH550@CNTs-β-FeOOH in the composite effectively improved the thermal conductivity of VMQ.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Dan Meng,Kaihao Wang,Wenjia Wang,Jun Sun,Haiqiao Wang,Xiaoyu Gu,Sheng Zhang
Flexible polyurethane foam (FPUF) is widely used in our life, but it is inherent flammable. The demand for environmental-friendly multi-functional FPUF has been increasing rapidly in the last decade. In this work, a novel bio-based flame retardant coating was constructed by chemically reacting sodium alginate (OSA) and polydopamine (PDA) on the FPUF, followed by depositing nanorod-like β-FeOOH molecules through complexation reaction to form a biomimetic structure. The limiting oxygen index of the coated FPUF samples reached 25.5%. The peak heat release rate was reduced by 45.0%, and the smoke density of the coated sample was decreased by 69.1% compared to that of the control FPUF sample. It was proposed that the OSA-PDA-β-FeOOH decomposed during combustion to promote the formation of compact crosslinked char and released inert gases to dilute the combustible gases, and the β-FeOOH transferred to Fe 2 O 3 to settled the smoke particles reducing the smoke release. Furthermore, the coating with shark skin like structure endowed FPUF antibacterial ability because of its good superoleophobicity underwater. This work provided a novel strategy to construct a biomimetic multifunctional coating on the FPUF.
研究领域:
材料科学
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化学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2021
·
IF 7.991
Qiaoli Ren,Gerile Aodeng,Lu Ga,Jun Ai
Nowadays, photo reversible color switching systems (PCSS) are always limited by some requirements, such as good stability, low toxicity, fast light response, long cycling performance and low production cost, therefore, it is a huge challenge to develop such a system that integrates beneficial features. Herein, a new type of PCSS have been demonstrated, which integrated reducing agent of triethanolamine (TEOA), catalyst of β-FeOOH nanorods and the redox driven color conversion characteristics of redox dyes. The system has the advantages of high switching rate, high reversibility (>10 cycles), wavelength selective response, safety and less light damage, which can be widely used in rewritable paper. As-prepared rewritable paper has high contrast, high resolution, suitable printing time and good reversibility, which is in line with the environmental protection concept of green printing. Rewritable paper is a kind of self-erasable rewritable medium which is highly suitable for printing. Environmental protection film has the advantages of low cost, convenient preparation and recycling. It is expected to replace the traditional writing, printing paper, existing systems and make a big step forward to practical application. Even more surprising, it also can be applied for a data encoding and reading strategy.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 4
·839
·
IF 5
Yin Tang,Tang Zhu,Huichao Liu,Zheng Tang,Xingwen Kuang,Yongna Qiao,Hao Zhang,Caizhen Zhu
Hydrogel coatings that can endow various substrates with superior properties (e.g., biocompatibility, hydrophilicity, and lubricity) have wide applications in the fields of oil/water separation, antifouling, anti-bioadhesion, etc. Currently, the engineering of multifunctional hydrogel-coated materials with superwettability and water purification property using a simple and sustainable strategy is still largely uninvestigated but has a beneficial effect on the world. Herein, we successfully prepared poly(2-acrylamido-2-methyl-1-propanesulfonic acid) hydrogel/β-FeOOH-coated poly(vinylidene fluoride) (PVDF/PAMPS/β-FeOOH) membrane through free-radical polymerization and the in situ mineralization process. In this work, owing to the combination of hydrophilic PAMPS hydrogel coating and β-FeOOH nanorods anchored onto PVDF membrane, the resultant PVDF/PAMPS/β-FeOOH membrane achieved outstanding superhydrophilicity/underwater superoleophobicity. Moreover, the membrane not only effectively separated surfactant-stabilized oil/water emulsions, but also possessed a long-term use capacity. In addition, excellent photocatalytic activity against organic pollutants was demonstrated so that the PVDF/PAMPS/β-FeOOH membrane could be utilized to deal with wastewater. It is envisioned that these hydrogel/β-FeOOH-coated PVDF membranes have versatile applications in the fields of oil/water separation and wastewater purification.Keywords:hydrogel coating;photo-fenton catalysis;PVDF membrane;oil/water separation;water purification
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 13
·7269-7279
·
IF 2.936
Junyu Fan,Zhiwei Zhao,Zhaoxia Ding,Jie Liu
In this study, different crystalline structures of FeOOH have been prepared. α-FeOOH was synthesized through a hydrothermal method, whereas β-FeOOH was synthesized via a direct hydrolysis method. Moreover, γ- and δ-FeOOH were prepared by precipitation methods through slow and quick oxidation, respectively. On this basis, their crystal structure, morphology, and surface area were measured. Then, all the synthesized materials were applied to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4−˙) for acid orange 7(AO7) degradation. Compared with α-FeOOH, β-FeOOH, and γ-FeOOH, δ-FeOOH showed more efficient decolorization of AO7 in the catalytic system because of its abundant surface area and crystalline structure. The effects of several parameters in the δ-FeOOH/PMS/AO7 system were investigated. The results show that the initial pH, which is related to the features of surface hydroxyl groups, is the decisive factor, and excellent catalytic activity is maintained in the pH range 5–8. The increase of catalyst dosage and appropriate increase of PMS concentration contributed to promote the degradation effect. However, self-quenching was observed in a high PMS concentration system. Moreover, δ-FeOOH was stable after six consecutive cycles, and the leaching of iron ions was negligible. According to the quenching test and electron spin resonance analysis, both SO4−˙ and ˙OH were the dominant radicals for AO7 degradation.
研究领域:
环境科学
·
催化
·
水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Mengxu Sun,Qianying Zhou,Jing Peng,Simin Liu,Jiaxin Luo,Lingling Bai,Wen-Jun Duan,Jin-Xiang Chen,Zong Dai,Jun Chen
As an important disease biomarker, the development of sensitive detection strategies for miRNA, especially intracellular miRNA imaging strategies, is helpful for early diagnosis of diseases, pathological research, and drug development. Hybridization chain reaction (HCR) is widely used for miRNA imaging analysis because of its high specificity and lack of biological enzymes. However, the classic HCR reaction exhibits linear amplification with low efficiency, limiting its use for the rapid analysis of trace miRNA in living cells. To address this problem, we proposed a toehold-mediated exponential HCR (TEHCR) to achieve highly sensitive and efficient imaging of miRNA in living cells using β-FeOOH nanoparticles as transfection vectors. The detection limit of TEHCR was as low as 92.7 fM, which was 8.8 × 103 times lower compared to traditional HCR, and it can effectively distinguish single-base mismatch with high specificity. The TEHCR can also effectively distinguish the different expression levels of miRNA in cancer cells and normal cells. Furthermore, TEHCR can be used to construct OR logic gates for dual miRNA analysis without the need for additional probes, demonstrating high flexibility. This method is expected to play an important role in clinical miRNA-related disease diagnosis and drug development as well as to promote the development of logic gates.
研究领域:
生物技术
·
纳米技术
·
分子生物学
·
癌症研究
·
诊断学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ran Deng,Xu-Ze Xia,Jian-Chen Han,Qing-Yun Wu,Hao-Cheng Yang
Catalytic membrane reactors based on photo-Fenton reactions have been widely applied in organic wastewater treatment. Conventional porous membrane reactors require a multi-cycle operation to achieve a high degradation efficiency. To realize the continuous treatment of wastewater with high efficiency, we propose a novel siphon-driven interfacial photocatalytic reactor based on the β -FeOOH-coated fabrics in the current work, in which the feed transport is within the fabric rather than across the fabric. The liquid flow is driven by gravity without additional energy input and can be adjusted by the structural parameters to match the reaction rate. Moreover, the confined capillary flow ensures sufficient contact between the feed and catalysts, as well as sufficient sunlight utilization, leading to the high degradation efficiency (>99 %) for a variety of organic contaminants such as tetracycline and dyes. The relationship between the fabric structural parameters and degradation performance was also investigated to achieve an optimal design.
研究领域:
环境工程
·
化学工程
·
水处理
·
光催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）