TALANTA
·
2020
·
IF 5.339
Yixin Liu,Binxiao Li,Yuanyuan Yao,Beibei Yang,Tongtong Tian,Yan Miao,Baohong Liu
An electrochemiluminescence (ECL) resonance energy transfer system is constructed for 17β-estradiol (E2) detection using α [email protected] nanospheres as the ECL-active substrates and Ag NCs as an efficient quencher. CdS QDs loaded onto three-dimensional (3D) urchin-like α-FeOOH nanospheres (α [email protected] nanospheres) exhibited excellent ECL responses, which is attributed to dual-amplification of α-FeOOH frameworks. The 3D hierarchical structure of the α-FeOOH nanospheres provided abundant sites for loading ECL-active species, thus significantly improving the ECL performance of substrates; While Fe 3+ presented on surface of α-FeOOH nanospheres could be reduced to Fe 2+ in negative potentials, after which might activate persulfate in a Fenton-like process, resulting in more sulfate free radicals for more effective ECL responses via electron transfer reactions. Additionally, Ag nanoclusters (Ag NCs) stabilized by single stranded oligonucleotide were introduced as quenching probes for CdS QDs owing to the well-matched donor-acceptor spectrum for efficient energy transfer, which makes them appropriate for detection of E2. The proposed strategy displayed a desirable dynamic range from 0.01 to 10 pg mL −1 with a limit of detection of 0.003 pg mL −1 . The proposed strategy based on the ECL-RET strategy offered an ideal way for E2 detection, and also revealed an alternative platform for detection of other small molecules.
研究领域:
分析化学
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生物化学
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纳米技术
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环境科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jing Ma,Hongjun Lin,Wei Yu,Cheng Chen,Qianqian Zeng,Siyuan Chen,Xuezheng Huang,Leihong Zhao,Liguo Shen
Lately, frequent offshore oil spills and the limitations of traditional oil–water separation membranes in balancing selectivity and permeability have driven the development of innovative membrane technologies for the efficient treatment of oily wastewater. In this study, a durable and recyclable Acrylonitrile–Butadiene–Styrene (ABS) membrane was fabricated using 3D printing, subsequently sulfonated via radiation-induced grafting, and further modified with in situ mineralization to prepare β-FeOOH@ABS membrane. The β-FeOOH@ABS membrane exhibited excellent hydrophilicity and oleophobicity compared to bare hydrophobic ABS membrane, with a water contact angle of 16° and an underwater oil contact angle of 162°. Under gravity-driven conditions, the β-FeOOH@ABS membrane achieved a separation efficiency exceeding 99.78 % across five different oil–water mixtures, along with an exceptionally high flux of 2.93 × 10 5 L·m -2 ·h -1 , attributed to stable hydration layer formed via β-FeOOH nanorods. Combined 100 cycles durability tests and XDLVO theoretical analysis, it was found that the β-FeOOH@ABS membrane showed excellent long-term stability and anti-fouling performance with high flux recovery of 99.41 % and separation efficiency of 99.83 %, originating from its enhanced fouling resistance. The photocatalytic property of β-FeOOH nanorods also endowed the β-FeOOH@ABS membrane with superior catalytic performance. This work underscores the significant potential of novel β-FeOOH@ABS membranes for advanced oil–water separation applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Yulin Yuan,Qiongfang Wang,Xin Zhang,Lei Dong,Cheng Peng,Min Zhang,Pinhua Rao,Naiyun Gao,Jing Deng
The residues of sulfonamide antibiotics in the environment would pose a threat to aquatic ecosystem and human health. In this study, β-FeOOH@ZnO was synthesized by using a hydrothermal method to activate peroxymonosulfate (PMS) for the degradation of the typical sulfonamide antibiotic sulfadimethoxine (SDM), in which 98.89 % of SDM was removed in 60 min with activating 0.5 mM PMS. Moreover, the influence of catalyst dosage, PMS dosage, solution pH and anions on the degradation efficiency of SDM was investigated in the system. The results indicated that the material exhibited good applicability and β-FeOOH@ZnO performed well in a wide pH range (5–11). 1 O 2 was the major reactive oxygen species (ROS) rather than ˙ OH , S O 4 ˙ − and O 2 ˙ − through free radical quenching experiments and electron paramagnetic resonance experiments (EPR). Furthermore, the mechanism was found that ZnO could enhance the electron transfer pathway of β-FeOOH, which accelerated the degradation of SDM. Possible intermediate products and degradation pathways were proposed through LC-MS analysis. In summary, this study offered a new strategy for the efficient degradation of sulfonamide antibiotics in water treatment.
研究领域:
环境科学
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催化化学
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水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Food Frontiers
·
2023
·Vol. 4
·期 4
·1913-1926
·
IF 9.9
Chun-Yang Li,Lu Yang,Yingshuang Lu,Man-Man Wang,Jing-Min Liu,Shuo Wang
Photocatalysis-based advanced oxidation technologies have been developed as an attractive strategy for degrading pollutants. However, the question of how to increase removal specificity without sacrificing the degradation effect remains a difficult one. In this work, a photocatalytic system for the simultaneous targeted elimination of nine heterocyclic amines (HCAs) is established using a green-prepared photocatalyst (CN@Mn–FeOOH@MIP) that activates sodium persulfate (PS) under visible light. Mn–FeOOH clusters are in situ covered on laminar g-C 3 N 4 (CN) carrier to form a heterojunction, along with a molecularly imprinted layer self-polymerized from dopamine, which is grown on the outer layer, resulting in both the desired photochemical activity and specific sites for recognition. The conditions of composite and photocatalysis are explored and optimized for efficient and selective degradation. Notably, CN@Mn–FeOOH@MIP is synthesized free of any organic reagents, and the biosafety is confirmed by cellular and in vivo toxicity evaluation. The developed CN@Mn–FeOOH@MIP/PS system with visible-light-driven is applied to the removal of HCAs in coffee samples with the recoveries over 70% and the reuse rates greater than 85%. It coupled the advantages of specific enrichment and rapid degradation, which furnishes a novel approach for the control of trace thermal processing pollutants.
研究领域:
环境科学
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材料科学
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食品安全
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 13
·20621-20636
·
IF 0
Yin Bingjie,Li Jingying,Guo Wei,Dong Haoqing,Zhang Guangshan,Xin Yanjun,Zhang Guodong,Chen Qinghua
Polycyclic aromatic hydrocarbons (PAHs) in soil are potentially harmful to human health. However, the use of photocatalysis technology to treat soil contaminated with PAHs remains challenging. Therefore, TiO 2 /α-FeOOH composite photocatalyst has been synthesized by hydrothermal method and sol–gel method and applied to photocatalytic degradation of fluoranthene in soil. The morphology, elements, crystal structure, optical properties, electrochemical characteristics, and photocatalytic activity of TiO 2 /α-FeOOH have been characterized. Results showed that TiO 2 is tightly fixed on the surface of α-FeOOH, and TiO 2 /α-FeOOH had higher photocatalytic activity on photocatalytic degradation of fluoranthene in soil under simulated sunlight. The degradation efficiency of TiO 2 /α-FeOOH is 3.0 and 4.8 times higher than that of TiO 2 and α-FeOOH, respectively. This is attributed to enhanced photocatalytic ability by enhancing the transfer capacity of electrons and holes and broadening the spectrum absorption range. The highest degradation efficiency was achieved when the pH of the soil is neutral, the ratio of water/soil is 10:1, and the dosage of catalyst is 50 mg/g. In addition, it was proved that •O 2 − , h + , and 1 O 2 are the main active substances in the photocatalysis of TiO 2 /α-FeOOH. The possible mechanism of a Z-type electron transfer structure was also proposed. The degradation products of fluoranthene were detected, and the degradation pathway was deduced.
研究领域:
环境科学
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材料科学
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催化
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土壤修复
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纳米技术
✓ 已验证
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Zhiming Sun,Rui Zhu,Tianle Ding,Xiangwei Zhang,Chunquan Li
Persulfate activation technology based on sulfate radicals is currently a hot spot in the field of environmental governance. In our work, α-FeOOH was successful in situ loaded on kaolinite surface through a simple one-step hydrothermal process. The prepared composites were systematically characterized, and the relationship between the structural properties and peroxymonosulfate activation properties was explored. Interestingly, compared to bare α-FeOOH, the introduction of kaolinite in composite induced the transformation of α-FeOOH crystal and affected the morphology, where uniformly dispersed nanoparticles rather than rod-like agglomerated crystals appeared. The received FeOOH/kaolinite composite exhibited admirable adsorption and degradation of ciprofloxacin performance with the removal efficiency of 86.1%, and the degradation rate constant was up to 5.2 times higher than that of bare α-FeOOH. In addition, the main active species in the catalytic oxidation system are surface-bound SO 4 •− , • OH and free 1 O 2 . This work would give a deep insight into the role of natural minerals in composite catalytic materials and the construction of high-efficient mineral-based composite materials.
研究领域:
环境科学
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催化
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Xueting Zhao,Lijuan Cheng,Ning Jia,Ruoxi Wang,Lifen Liu,Congjie Gao
Carbon nanotube (CNT) membranes with nano-enhanced superwettability show great potential in high-efficient oil/water separation. In this study, we present a novel polyphenol-metal manipulated nanohybridization strategy to prepare CNT nanohybrid membranes embedded with FeOOH nanorods (NRs). The polyphenol-metal manipulated nanohybridization strategy lies in the assembly of polyphenol-metal (chitosan/tannic acid-Fe 3+ ) complex primer on the CNT membranes followed by in situ FeOOH NRs mineralizating. The polyphenol-metal complex modulates the uniform distribution of in situ mineralized FeOOH NRs in the as-prepared CNT@CS/TA-FeOOH nanohybrid membrane, which endows the CNT nanohybrid membrane with both superhydrophilicity and underwater superoleophobicity. By integrating the high permeability of CNT membranes and the hydrophilicity and photo-degradation activity of FeOOH NRs, the CNT@CS/TA-FeOOH nanohybrid membrane possesses achieved a high water permeability above 8000 Lm -2 h -1 bar -1 and greatly elevated flux recovery ratio above 97% for oil/water separation. Both hydration-induced antifouling property and photo-induced self-cleaning capability contributed to the robust flux recovery for highly efficient oil/water separation. The CNT@CS/TA-FeOOH nanohybrid membrane is promising for oily wastewater treatment applications, and the proposed polyphenol-metal manipulated nanohybridization strategy shows great potential for engineering various multifunctional nanohybrid membranes.
研究领域:
材料科学
·
环境工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yifan Wang,Zhengjie Peng,Youqing Yang,Zhonnan Li,Yujiao Wen,Meng Liu,Shikai Li,Lezhu Su,Zhi Zhou,Yongfa Zhu,Nan Zhou
The abuse of agrochemicals has caused serious environmental pollution, raising urgently requirement for sensitive controlled release systems. Biochar supported γ-FeOOH nanoarrays (γ-FeOOH@BC) were synthesized in situ through a two-step pyrolyzation-oxidation procedure. The decoration of γ-FeOOH nanoarray structure significantly enhanced the surface positive charge of the composite (pH zpc increased from 2.7 to 7.8), due to which active substances could be electrostatically self-assembled on γ-FeOOH@BC to realize accurate release by changing the environmental pH. The assembled amounts of QNC and PO 4 3- could reach a value of 94 mg·g −1 and 92 mg·g −1 respectively, and the encapsulation efficiency as well as the release concentration were closely related to the pKa of the substance. 45% (QNC) and 63% (PO 4 3- ) could be released at pH = 7.8 and finally both reached to 88% at pH = 11. After 5 rounds of the sensitivity test, QNC/ PO 4 3- could be well assembled or released by pH adjustment, and the encapsulation efficiency remained above 75%. Meanwhile, the assembly structures could also be self-formed in real soil containing QNC/PO 4 3- and had selective herbicidal activity on barnyard grass plants. This work not only provides a feasible material but also a novel method for self-assembly and controlled release of agricultural chemicals.
研究领域:
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zhengang Bu,Jianhua Li,Siqi Fang,Yuanlin Zhan,Wenzhuo He,Yibin Huang
The uniform and stable deposition of metal-organic frameworks (MOFs) onto membranes without compromising their performance presents a significant challenge. This study reports the fabrication of a photocatalytic self-cleaning membrane using hydrothermal and photochemical substitution methods. These methods enabled the uniform and stable deposition of β-FeOOH nanorods, m-MIL-100(Fe), and Ag nanoparticles (NPs) not only on the members surface but also throughout the interior of polyvinylidene fluoride (PVDF) membrane pores. The synergistic effect of these materials and their uniform and stable distribution within the PVDF membrane resulted in superior photocatalytic efficacy. The membrane's excellent photocatalytic performance facilitated the degradation of most pollutants, ensuring prolonged usage. Unlike other photocatalytic membranes requiring additional cocatalysts, our membrane degraded over 90% of various dyes without H 2 O 2 , demonstrating a greener usage mode and higher photocatalytic efficiency. The valence band (VB) and conduction band (CB) of β-FeOOH nanorods and m-MIL-100(Fe) were calculated, confirming the existence of a type-II heterojunction for the first time. Free radical trapping experiments identified hydroxyl radicals (·OH) as the primary reactive species in the degradation process. This research provides a novel approach to uniformly and stably load MOFs on membranes, enhancing their properties and offering insights into fabricating multifunctional photocatalytic membranes.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2022
·
IF 3.985
Pei Mengxi,Lv Shangchun,Liu Yishui,Si Zhichun,Wu Xiaodong,Ran Rui,Weng Duan,Kang Feiyu
Photocatalytic removal of organic pollutants under solar irradiation at room temperature is considered an energy-saving technique of environmental remediation. However, photocatalysis is impeded by the poor response to visible light and fast charge recombination. In this work, sub-nano Pt/β-FeOOH quantum dots (QDs) were designed to shorten the charge migration path and obtain wide light harvesting. Interestingly, the crystalline β-FeOOH QDs can be obtained by loading sub-nano Pt particles via a reconstruction mechanism of amorphous FeOOH induced by H2 spillover, which facilitates the fast kinetics of charge transition and benefits the oxygen-rich surface of the catalyst for photocatalytic oxidation reactions. Moreover, the Pt-VO-Fe interfaces were proved to be the most active sites for the activation of O2. As a result, the catalyst exhibits a predominant photocatalytic performance in toluene oxidation, achieving a TOFPt of 0.591 min−1 at room temperature under visible light irradiation. This work provides a new perspective on the design and preparation of nanocatalysts for high-efficient photocatalysis under visible light irradiation.
研究领域:
环境科学
·
催化
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 3
·1187-1197
·
IF 2.8
Zhong Xiaoqiu,Yao Qingyun,Tang Shuangmei,Kong Zhenzhen,Yang Chao,Zang Limin,Qiu Jianhui
Fibrous all-solid-state flexible supercapacitors have attracted much attention in the functional field of wearable electronic devices due to their excellent deformability. It is very important to select suitable flexible substrate, active substance, and binding means to improve electrode performance. In this paper, carbon fiber with high conductivity and the active site was used as a flexible substrate, and FeOOH with high specific capacity was grown on the surface of carbon fiber yarn by one-step in situ electrodeposition. The influence of different deposition conditions on the morphology of FeOOH and the electrochemical performance of the flexible electrode was studied. The electrode obtained by deposition at a constant voltage of 2.5 V for 150 min has a high specific capacitance of 10.44 F cm −3 . In addition, the device has a high voltage window of 1.6 V and excellent cycle stability of 7000 cycles when formed as an all-solid-state symmetric supercapacitor.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Hongwei Zhu,Xu Yin,Yi Wang,Kajia Wei,Liankai Gu,Yonghao Zhang,Zhenshan Duan,Zhen Huang,Haoming Chen,Weiqing Han
This study developed a self-supported MOF/FeOOH heterojunction cathode without binders for boosted Fe(Ⅲ) reduction in heterogeneous electro-Fenton (EF) processes. The electron transport channels from FeOOH to in-situ grown NH 2 -MIL-88B(Fe) were established through the spontaneous formation of an internal electric field (IEF), which enhanced the electrical conductivity and disrupted the chemical inertness of the Fe(Ⅲ) reduction. The MOF/FeOOH cathode increased sulfamethazine (SMT) removal up to 95.76 %, 2.5 times better than using PTFE as binders. After ten-consecutive degradation experiments, the Fe(Ⅱ) content at cathode surface increased from 39.23 % to 56.73 %. Density functional theory (DFT) calculations and advanced characterization techniques demonstrated the efficient Fe(Ⅲ) reduction and H 2 O 2 activation during the reaction. These results elucidate the promoting effect of modulating the “contact” between the catalyst and current collectors, as to provide a feasible and promising strategy for the development of efficient heterogeneous EF cathodes.
研究领域:
环境科学
·
材料科学
·
电化学
·
催化
✓ 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）