Biosensors-Basel
·
2023
·Vol. 13
·期 1
·103
·
IF 5.4
Xu Li,Jiali Huang,Jiayu Ding,Mingzhen Xiu,Kang Huang,Kang Cui,Jing Zhang,Shiji Hao,Yan Zhang,Jinghua Yu,Yizhong Huang
A dual-mode lab-on-paper device based on BiVO4/FeOOH nanocomposites as an efficient generating photoelectrochemical (PEC)/colorimetric signal reporter has been successfully constructed by integration of the lab-on-paper sensing platform and PEC/colorimetric detection technologies for sensitive detection of carcinoembryonic antigen (CEA). Concretely, the BiVO4/FeOOH nanocomposites were in situ synthesized onto the paper-working electrode (PWE) through hydrothermal synthesis of the BiVO4layer on cellulose fibers (paper-based BiVO4) which were initially modified by Au nanoparticles for improving the conductivity of three dimensional PWE, and then the photo-electrodeposition of FeOOH onto the paper-based BiVO4to construct the paper-based BiVO4/FeOOH for the portable dual-mode lab-on-paper device. The obtained nanocomposites with an FeOOH needle-like structure deposited on the BiVO4layer exhibits enhanced PEC response activity due to its effective separation of the electron–hole pair which could further accelerate the PEC conversion efficiency during the sensing process. With the introduction of CEA targets onto the surface of nanocomposite-modified PWE assisted by the interaction with the CEA antibody from a specific recognition property, a signal-off PEC signal state with a remarkable photocurrent response decreasing trend can be achieved, realizing the quantitative detection of CEA with the PEC signal readout mode. By means of a smart origami paper folding, the colorimetric signal readout is achieved by catalyzing 3,3′,5,5′-tetramethylbenzidine (TMB) to generate blue oxidized TMB in the presence of H2O2due to the satisfied enzyme-like catalytic activity of the needle-like structure, FeOOH, thereby achieving the dual-mode signal readout system for the proposed lab-on-paper device. Under the optimal conditions, the PEC and colorimetric signals measurement were effectively carried out, and the corresponding linear ranges were 0.001–200 ng·mL−1and 0.5–100 ng·mL−1separately, with the limit of detection of 0.0008 and 0.013 ng·mL−1for each dual-mode. The prepared lab-on-paper device also presented a successful application in serum samples for the detection of CEA, providing a potential pathway for the sensitive detection of target biomarkers in clinical application.Keywords:PEC;colorimetric;lab-on-paper device;BiVO4/FeOOH;CEA
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Manfang Mai,Lianke Ma,Yulan Zhou,Side Fu,Wenhao Deng,Xiaowen Wang,Xinzhou Ma
To overcome the rapid charge recombination and sluggish water oxidation kinetics, FeOOH/V O -BiVO 4 photoanodes were rationally prepared. The highest photocurrent density of 3.5 mA cm −2 was generated by the FeOOH/V O -BiVO 4 photoanodes at 1.23 V RHE , which was 3.5-fold higher than that of the pristine BiVO 4 . The dominate enhancement mechanism can be ascribed to significantly increased charge transfer efficiency by the FeOOH overlayers. Intensity-modulated photocurrent spectroscopy revealed that such increased charge transfer efficiency was resulted from the strong suppression of surface recombination by the FeOOH overlayers. Rate constant of surface recombination was strongly reduced to approximately 10 −2 s −1 at 0.93–1.23 V RHE . The strongly suppressed surface recombination was attributed to the storage capacity of the FeOOH for the photogenerated holes. Meanwhile, oxygen vacancies just had a minor impact on the kinetics of charge transfer and surface recombination but slightly increased the charge separation efficiency in the bulk. This work clarifies the roles of oxygen vacancies and the FeOOH overlayers in the increased photocurrent density, facilitating the rational design of high-performance BiVO 4 -based photoanodes.
研究领域:
光电化学
·
材料科学
·
水分解
·
半导体电极
·
光谱学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhenyuan Ji,Guanxiang Tang,Jingchuang Zhang,Xinghang Chuan,Jiali Zhong,Zixin Lin,Peng Song,Keqiang Xu,Xiaoping Shen
Exploiting advanced anode and cathode materials with distinctive architectures and multi-component participation is of great significance to boosting the energy density of asymmetric supercapacitors. Herein, ultra-fine FeOOH nanoparticles are in situ grown on the hollow N, S co-doped carbon (HNSC) spheres using a facile solvothermal strategy and subsequent calcination process. Benefiting from the attractive hollow architecture and the synergistic effect between FeOOH and HNSC, the FeOOH/HNSC composite as anode for supercapacitors delivers an optimal capacity of 588.2 C g −1 (1 A g −1 ) and remains 88.3 % of its initial value after 10,000 cycles at 15 A g −1 in 6 M KOH. Furthermore, the HNSC-supported Co 3 S 4 nanoparticles are also prepared through a one-step solvothermal strategy. The obtained Co 3 S 4 /HNSC composite as cathode achieves a capacity of 420 C g −1 (1 A g −1 ) and maintains a high retention of 95.3 % after 10,000 cycles at 15 A g −1 . The constructed asymmetric supercapacitor using FeOOH/HNSC and Co 3 S 4 /HNSC as anode and cathode appears to possess a superior energy density of 82.3 Wh kg −1 at 821.6 W kg −1 with retention of 84.9 % after 10,000 cycles at 10 A g −1 . These attainments demonstrate that constructing multi-component electrode materials with unique structures is an effective method to optimize the electrochemical characteristics of asymmetric supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Fanqing Meng,Yingling Wang,Zhen Chen,Jinglu Hu,Guang Lu,Wei Ma
The occurrence of antibiotics in water environment has drawn great concerns in recent years. In this work, CQDs@FeOOH electro-catalyst with abundant active edges was synthesized and applied to the degradation of antibiotics. About 99.6 % levofloxacin (LEVO) and 53.7 % TOC could be efficiently removed by CQDs@FeOOH after 60 min degradation. The high LEVO degradation performance of CQDs@FeOOH was demonstrated to be attributed to the high mass transfer ability and the high OH generation ability of the special needles structure. The OH was found to be the main radical for LEVO degradation, and the highest OH generation ability of CQDs@FeOOH was found to be resulted from the moderate adsorption energy of the exposed (1 1 0) facets (needles) toward OH. A possible LEVO degradation pathway has been proposed and toxicity changes during LEVO degradation were detailed investigated. This study offers an efficient method to reduce the amount and toxicity of antibiotics in water.
研究领域:
环境科学
·
电催化
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Jinxiu Li,Jinxin Zhao,Bing Li,Huaitian Bu,Weizhao Yin,Sihao Lv,Jinhua Wu
Activated carbon-supported goethite (α-FeOOH@AC) was prepared by a simple impregnation method to catalyze hydrogen peroxide (H 2 O 2 ) for effective inactivation of Escherichia coli ( E. coli ) with α-FeOOH and AC as controls. As expected, α-FeOOH particles were uniformly distributed on AC surfaces and surface-bound Fe(III) was partially converted to Fe(II) by structural hydroxyl groups of AC. The resultant Fe(II) catalyzed H 2 O 2 to generate hydroxyl radicals (·OH) for effective E. coli inactivation by destroying its membrane and intracellular substances. The α-FeOOH@AC-H 2 O 2 system therefore achieved an effective inactivation efficiency of 4.5 log, which was much higher than 1.6 log of the α-FeOOH-H 2 O 2 system and 1.9 log of the AC-H 2 O 2 system. Besides, due to the cycle of Fe(III)/Fe(II) redox on AC surface during reaction, high inactivation efficiency and low leaching iron concentration of 0.29 mg/L could be achieved at neutral condition. In addition, the α-FeOOH@AC showed excellent stability and reusability, and the used α-FeOOH@AC could be refreshed by eluting surface-bound iron oxides and reloading α-FeOOH particles with the above impregnation method. Our study demonstrated that α-FeOOH@AC is an effective and stable heterogeneous Fenton catalyst for the inactivation of E. coli in surface water treatment .
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Qiang Lu,Li Liu,Shuanglei Yang,Jun Liu,Qingyong Tian,Weijing Yao,Qingwen Xue,Mengxiao Li,Wei Wu
More convenience and intelligence life lead by flexible/wearable electronics requires innovation and hommization of power sources. Here, amorphous FeOOH/MnO 2 composite as screen-printed electrode materials for supercapacitors (SCs) is synthesized by a facile method, and solid-state flexible SCs with aesthetic design are fabricated by fully screen-printed process on different substrates, including PET , paper and textile. The amorphous FeOOH/MnO 2 composite shows a high specific capacitance and a good rate capability (350.2 F g −1 at a current density of 0.5 A g −1 and 159.5 F g −1 at 20 A g −1 ). It also possesses 95.6% capacitance retention even after 10 000 cycles. Moreover, the all-printed solid-state flexible SC device exhibits a high area specific capacitance of 5.7 mF cm −2 and 80% capacitance retention even after 2000 cycles. It also shows high mechanical flexibility. Simultaneously, these printed SCs on different substrates in series are capable to light up a 1.9 V yellow light emitting diode (LED), even after bending and stretching.
研究领域:
材料科学
·
能源存储与转换
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2017
·
IF 6.198
Xufang Qian,Meng Ren,Yao Zhu,Dongting Yue,Yu Han,Jinping Jia,Yixin Zhao
A novel α-FeOOH/mesoporous carbon (α-FeOOH/MesoC) composite prepared by in situ crystallization of adsorbed ferric ions within carboxyl functionalized mesoporous carbon was developed as a novel visible light assisted heterogeneous Fenton-like catalyst. The visible light active α-FeOOH nanocrystals were encapsulated in the mesoporous frameworks accompanying with surface attached large α-FeOOH microcrystals via C–O–Fe bonding. Assisting with visible light irradiation on α-FeOOH/MesoC, the mineralization efficiency increased owing to the photocatalytic promoted catalyzing H2O2 beyond the photothermal effect. The synergistic effect between α-FeOOH and MesoC in α-FeOOH/MesoC composite improved the mineralization efficiency than the mixture catalyst of α-FeOOH and MesoC. The iron leaching is greatly suppressed on the α-FeOOH/MesoC composite. Interestingly, the reused α-FeOOH/MesoC composites showed much higher phenol oxidation and mineralization efficiencies than the fresh catalyst and homogeneous Fenton system (FeSO4/H2O2). The XPS, XRD, FTIR, and textural property results reveal that the great enhancement comes from the interfacial emerged oxygen containing groups between α-FeOOH and MesoC after the first heterogeneous Fenton-like reaction. In summary, visible light induced photocatalysis assisted heterogeneous Fenton-like process in the α-FeOOH/MesoC composite system improved the HO• production efficiency and Fe(III)/Fe(II) cycle and further activated the interfacial catalytic sites, which finally realize an extraordinary higher degradation and mineralization efficiency.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yingying Yin,Lei Zhu,Xiao Chang,Jinwei Xue,Shifan Yu,Xiaofang Li,Qingzhong Xue
Designing and constructing a stable water-retention layer acting as the isolation between the oil and membrane surface holds great significance for solving the membrane fouling problems in oil/water separation, including common layered oil/water mixtures, immiscible oil-in-water emulsions, and even high-viscosity crude oil-in-water emulsions. Inspired by the self-cleaning property of sea urchin thorns, a bioinspired anti-oil-fouling hierarchically structured membranes decorated with urchin-like α-FeOOH particles was successfully prepared via the layer-by-layer (LBL) self-assembly method, maintaining numerous effective micro-nanopores. The hierarchical structured membrane exhibited superior superhydrophilicity/underwater superoleophobicity, high water-retention ability, and preferable anti-oil-fouling properties. Furthermore, the biomimetic membrane with controllable pore sizes could not only separate common layered oil/water mixtures but also effectively separate immiscible surfactant-stabilized oil-in-water emulsions of both low-viscosity crude oil and high-viscosity crude oil with an ultrahigh water flux up to 2598.4 L m–2 h–1 and an outstanding separation efficiency of 98.5%, revealing its promising prospect in oily wastewater treatment.
研究领域:
材料科学
·
环境工程
·
生物仿生学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xinyan Li,Teng Wang,Guilan Zhang,Xin Wen,Xinchuan Ma,Gang Xie,Lan Ma,Liyun Zhang
Developing an anti-fouling and multifunctional membrane with efficient separation performance is great potential for alleviating water crisis. Here, combining the heterogeneous β-FeOOH/Ag catalyst layer, intercepted GO nanosheets layer, and porous polyvinylidene fluoride (PVDF) substrate, a multi-layer composite membrane (β-FeOOH@GO/AgNWs) was designed and fabricated by the polyphenol (TA)-metal (Fe 3 + ) crosslinking and inductive effect. Hence, the β-FeOOH@GO/AgNWs membrane possesses robust physical and chemical stability, superhydrophilicity (water contact angle ∼0°) and underwater superoleophobicity (underwater oil contact angle >150°). Due to the construction of heterojunctions of β-FeOOH/Ag, the β-FeOOH@GO/AgNWs membrane achieved the degradation of various dyes under the photo-Fenton system, the degradation rate constant is 0.0986 min −1 . Meanwhile, the synergistic effect of multi-layer structure can efficiently intercept the various soluble dyes by electrostatic effect, π-π action and layered channels, the reject rate recached above 97.89 % under the acidic and neutral environment. Faced the membrane fouling phenomenon during the separation process, the flux and rejection of fouled membrane recovered to above 95.1 % and 97.9 % after photo-Fenton cleaning for 10 min. Moreover, the β-FeOOH@GO/AgNWs membrane also realized efficient separation performance for various oil-in-water emulsions, the flux reached 329.2 ± 25–486.1 ± 15 L m −2 h −1 bar −1 , the corresponding separation efficient was above 99 %. Similarly, the photo-Fenton cleaning strategy also regenerated the fouled composite membrane, the flux recovery rate was above 95 %. Therefore, we think that β-FeOOH@GO/AgNWs membrane can bring a new thinking of developing the multifunctional membrane to achieve complex wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 26
·期 3
·2820-2834
·
IF 2.8
Xu Jian,Zhang Xueliang,Sun Cheng,Wan Jinzhong,He Huan,Wang Fei,Dai Yuxuan,Yang Shaogui,Lin Yusuo,Zhan Xinhua
Peanut shell biochar (BC) supported on Cu-doped FeOOH composite (Cu–FeOOH/BC) was synthesized using a facile and scalable method. The Cu–FeOOH/BC samples were characterized by Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), scanning electron microscopy equipped with an energy-dispersive spectrometer (SEM-EDS), x-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) techniques. Novel catalytic composites with different Cu/Fe molar ratios were compared systematically by activating persulfate (PS) for the tetracycline (TC) degradation. 0.5Cu–1FeOOH/BC (Cu/Fe molar ratio = 0.5:1) was confirmed as the optimum activation material and the removal of TC reached 98.0% after 120 min by combining with 20 mM PS at pH 7.0 and 25 °C. The influencing factors including catalyst loading, PS dosage, water matrix species, and pH on the performance system of 0.5Cu–1FeOOH/BC-PS were investigated, respectively. Reaction rate constants ( K obs ) on catalyst dosages (0.05, 0.10, 0.20, and 0.30 g L −1 ) were 0.0072, 0.0101, 0.0244, and 0.0144 min −1 , and 0.0090, 0.0146, 0.0244, and 0.0178 min −1 for the change of PS concentrations (5, 10, 20, and 30 mM), which indicated that increasing the concentrations of catalyst and PS appropriately improved TC degradation, but excessive dosages inhibited the reaction process of TC removal. The TC removal rate was inhibited by inorganic anions with the following order of HCO 3 − > Cl − > HPO 4 2− > SO 4 2− > NO 3 − . Free radical quenching and capture experiments under different pH values revealed that sulfate radicals existed predominantly in acidic conditions and hydroxyl radicals in alkaline conditions. The catalyst showed an excellent recyclability and stability and the removal efficiency of TC still remained over 90% after five consecutive uses. To conclude, coupling of 0.5Cu–1FeOOH/BC and PS can be successfully applied as an effective and stable technique for the treatment of refractory organic pollutants in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 37
·17809-17816
·
IF 3.925
Binyao Liu,Longgang Yan,Jinyu Wen,Xiaotian Liu,Feng Duan,Bi Jia,Xiaoyan Liu,Gaili Ke,Huichao He,Yong Zhou
Relative to the traditional homogeneous Fenton process, the heterogeneous photo-Fenton system has superiorities in terms of the cost, pH range of application, and environmental compatibility for the degradation of organic pollutants. For the development of an effective heterogeneous photo-Fenton system, the most important part is the photocatalyst that can produce H2O2 and further activate it into free radicals (˙OH, ˙O2−). Here, composites of FeOOH and resorcinol–formaldehyde resin (RFS) were prepared by coupling an FeOOH thin layer on the surface of RFS nanospheres, and the resultant composites were investigated as photocatalysts for the construction of a heterogeneous photo-Fenton system. In the FeOOH/RFS composite-based system, H2O2 can be produced via the reduction of dissolved oxygen through RFS nanosphere photocatalysis under visible-light irradiation. Meanwhile, the Fe3+ of FeOOH can be partially reduced to Fe2+ by the photogenerated electrons of the FeOOH/RFS composites. Through the reaction of H2O2 with Fe2+, ˙OH is continuously produced to initiate the effective degradation of rhodamine B (RhB) and dimethyl phthalate (DMP). Our work presents an efficient heterogeneous photo-Fenton system to achieve the degradation of organic pollutants, which could inspire the development of a similar photo-Fenton system for environmental protection.
研究领域:
环境化学
·
材料科学
·
催化化学
·
环境污染与控制
·
光催化
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2019
·
IF 3.556
Shanshan Su,Yuyang Liu,Wei He,Xianchun Tang,Wei Jin,Yaping Zhao
Persulfate activation has been applied as one of the efficient advanced oxidation processes (AOPs) to remediate polluted environments. In this study, a novel α-FeOOH anchored by graphene oxide (GO)-carbon nanotubes (CNTs) aerogel (α-FeOOH@GCA) nanocomposite activated persulfate system (α-FeOOH@GCA + K 2 S 2 O 8 ) was applied for decolorization of Orange II (OII). The decolorization of OII was remarkably enhanced to a level of ~ 99% in this system compared with that of pristine α-FeOOH (~ 44%) or GO-CNTs (~ 18%). The enhanced catalytic activity of α-FeOOH@GCA was due to the formation of a heterojunction by α-FeOOH and GO-CNTs as confirmed by the presence of Fe–O–C chemical bonds. The degradation intermediates of OII were comprehensively identified. The proposed degradation pathway of OII begins with the destruction of the conjugated structures of OII by the dominant reactive oxygen species , surface-bound SO 4 •− . The decolorization efficiency of OII by the α-FeOOH@GCA activated persulfate system decreased from the first to third cycle of recycling. Ultraviolet (UV) irradiation or introduction of a small amount of Fe 2+ could restore the activation of this system. The results show that the α-FeOOH@GCA persulfate activation system promises to be a highly efficient environmental remediation method for organic pollutants .
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）