Journal of Energy Chemistry
·
2016
·
IF 2.322
Linlin Zhang,Yan Gao,Xin Ding
Adsorption state of catalyst on photoanode is an important factor on influencing the performance of dye-sensitized photoelectrochemical cells (DS-PECs) for water splitting. Photoanode TiO 2 ( 1 + 2 ) was assembled with Ru(bpy) 3 phosphoric acid derivative (complex 1 ) as photosensitizer and complex 2 as water oxidation catalyst to compare with photoanode TiO 2 ( 1 + 3 ). The photocurrent density of photoanode TiO 2 ( 1 + 3 ) with catalyst 3 synthesized with only one end fixing on the surface of TiO 2 is about four-fold of the photoanode assembled with catalyst 2 fixing with two claws on the surface of TiO 2 . The phenomenon should be caused by the littery arrangement and shorter distance of catalyst 2 from the active center of catalyst to TiO 2 on the surface of semiconductor which led to lowly efficient electron transfer.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 13
·2345
·
IF 5.1
Yifei Guo,Xinyu Yu,Rongrong He,Jianfei Pei,Haiming Chen,Weijun Chen
Ferulic acid (FA) exhibits beneficial properties in ulcerative colitis (UC) pathogenesis, while sensitivity to the environment and enzymes limits its use in UC therapy. Therefore, this study aims to develop a colon-targeted nanocomplex delivery system using FA and investigate its protective effects and underlying regulatory mechanisms in UC mice. A novel Zein/FA–pectin (PEC)/chitosan (CS) nanocomplex was successfully fabricated in this study. Through systematic adjustment of the PEC/CS-to-Zein/FA ratio, optimal encapsulation efficiency (60.1%) and loading capacity (26.2%) were achieved. The characterized data indicated that hydrogen bonds, electrostatic interactions, and hydrophobic forces were the main driving forces maintaining the formation of the nanocomplexes, accompanied by alterations in the secondary structure of Zein. The Zein/FA–PEC/CS nanocomplexes demonstrated excellent thermal/storage particle size stability and exhibited both protective and sustained-release effects of FA during simulated gastrointestinal digestion. Furthermore, the results demonstrated that the nanocomplexes potentially alleviate UC by regulating inflammatory cytokines, oxidative stress, and gut microbiota. Compared to unencapsulated FA, the nanocomplexes have a better effect on alleviating UC symptoms. In summary, Zein/FA–PEC/CS nanocomplexes have promising prospects in alleviating colitis in UC mice.
研究领域:
生物医学
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药剂学
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食品科学
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免疫学
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
P. Velusamy,Xinghui Liu,M. Sathiya,Norah Salem Alsaiari,Fatimah Mohammed Alzahrani,M. Tariq Nazir,Elangovan Elamurugu,M. Senthil Pandian,Fuchun Zhang
The two-step thermal polymerization and solvothermal approach is used to construct nano heterostructures of FCN and BiOI (bismuth oxeye iodide), both of which are Nobel metal-free materials. This work reports the effect nano-heterostructure on the micro-structural, light absorption capability, PEC properties and pollutant degradation efficiency of the synthesised heterostructures . The addition to that formation of FCN/BiOI nano-heterostructure enhances the solar light absorption. The FCN/BiOI nano heterostructure shows 10 times higher photocurrent density than the BCN nanostructure and 3.8 time higher that FCN. The FCN/BiOI has a high induced photo-current density (20.17 mA/cm 2 ) and H 2 evolution rate (3762 μmol h −1 cm −2 ) under solar light illumination (λ ≥ 420 nm) in comparison with the other. Furthermore, the photocatalytic performance of this material for the breakdown of methyl red dyes was much greater. Under solar light irradiation , the azo dyes were degraded in 90 min. The FCN/BiOI nano-heterostructure has a higher dye degradation efficiency of 97.91%. The rapid transport of photo-induced electrons in the FCN/BiOI nanocomposite is responsible for the improvement in PEC and PC performances. These impressive findings suggest that this nanocomposite might be used to facilitate the PEC water splitting and the PC degradation of MR in the presence of light. The current research provides insight on how to best tailor composition and structure for efficient FCN photo-electrocatalysis water splitting and Methyl red dye degradation.
研究领域:
材料科学
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光催化
·
能量转换
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环境修复
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纳米材料
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光电化学
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DOI
高影响因子
ACS Sensors
·
2026
·
IF 10.9
Cheng Linying,Zhong Yuee,Li Manqi,Huang Shu,Tang Jianru,Zhu Xiaohua,Li Haitao,Zhang Youyu,Liu Meiling
C-reactive protein (CRP), a key inflammatory biomarker, plays a critical role in clinical diagnostics; however, its reliable quantification demands analytical methods that surpass the limitations of conventional single-mode detection by integrating high sensitivity with built-in signal fidelity. Herein, we report a dual-mode photoelectrochemical (PEC) and colorimetric sensing platform based on bifunctional cobalt–ferrocene metal–organic framework (CoFcMOF) nanoflowers (NFs) for the ultrasensitive detection of CRP. The sensor is constructed on an In 2 O 3 -sensitized CdS heterojunction, which facilitates efficient charge separation and enhanced photocurrent response. The CoFcMOF NFs serve a dual function as both an antibody immobilization matrix and a peroxidase (POD)-mimicking signal transducer. Specific antigen–antibody recognition increases the interfacial electron-transfer resistance, leading to effective quenching of the PEC signal, while the POD-like activity of the CoFcMOF NFs catalyzes the oxidation of TMB, generating a distinct colorimetric readout. This integrated approach combines the advantages of intuitive visual screening and precise PEC quantification, addressing the inherent limitations of single-mode detection systems. The dual-mode platform enables simultaneous signal acquisition and achieves ultralow detection limits of 2.9 pg/mL (PEC) and 7.5 pg/mL (colorimetric) for CRP, which was also applied for CRP detection in serum and synovial fluid samples. This design offers significant synergistic advantages in functional integration, signal amplification, detection reliability, selectivity, and universal applicability, positioning it as a robust tool for the early diagnosis and disease monitoring in inflammatory arthritis and beyond. Beyond its analytical performance, this work introduces a versatile and robust paradigm for dual-mode biosensing and provides design principles for constructing multifunctional nanoarchitectures for next-generation sensing technologies.
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DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Chunfang Wang,Yining Wang,Faqiong Zhao,Baizhao Zeng
Organic-inorganic composite photoactive materials can combine the merits of organic and inorganic components and show better performance in comparison with single-component materials. In this work, a novel photoactive material was synthesized through chemical polymerization of 3,4-ethylenedioxythiophene (EDOT) on the surface of hydrothermally prepared Bi 2 WO 6 , followed by modification of self-polymerized dopamine (PDA). The integration of poly(3,4-ethylenedioxythiophene) (PEDOT) and Bi 2 WO 6 effectively facilitated the separation of photogenerated electron-hole pairs, thus demonstrated substantially strong photoelectrochemical signal compared to pure Bi 2 WO 6 . The PDA film, with abundant functional groups, could further sensitize the material and facilitate the immobilization of recognition units. As a proof of application, the composite was combined with carcinoembryonic antibody to construct an immunosensor for carcinoembryonic antigen sensing. Resultantly, although the components and construction procedure were simple, the prepared sensor demonstrated a broad linear detection range of 0.001–20 ng/mL and a relative low detection limit of 0.50 pg/mL. It also showed high selectivity and stability. Its practical feasibility was confirmed by detecting real samples and yielding satisfactory results.
研究领域:
生物医学工程
·
分析化学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Xiaoying Liu,Yu Xie,Yuee Zhong,Jingshu Li,Meiling Liu,Youyu Zhang,Qiang Li
Alkaline phosphatase (ALP) is a critical biomarker for the diagnosis of various diseases. Consequently, the precise detection of ALP activity is indispensable for clinical diagnosis, biomedical research, and the screening of enzyme inhibitors. Meanwhile, organophosphorus pesticides (OPs), a class of highly toxic and persistent environmental contaminants, have raised significant concerns due to their extensive use in agriculture and their potential risks to both ecosystems and human health. Here, we developed a novel photoelectrochemical (PEC) biosensing platform based on an optimized CdS@In₂S₃ heterojunction for the detection of ALP activity and OPs compounds. Through systematic optimization of the In₂S₃ incorporation ratio, a significant enhancement in photoelectric conversion efficiency compared to pristine CdS was achieved. The sensing mechanism exploits the synergistic effects of the ALP mediated hydrolysis of L-ascorbyl-2-phosphate trisodium salt (AAP) to generate ascorbic acid (AA) and the AA-induced photocurrent amplification of the CdS@In₂S₃ heterojunction. This dual signal amplification strategy enabled ultrasensitive detection of ALP activity with a wide linear range of 0.17–17,000 U/L and an exceptionally low detection limit (LOD) of 0.0083 U/L. Chlorpyrifos (CPF) inhibits the activity of ALP, thereby reducing the amount of AA generated from AAP catalyzed by ALP. This results in attenuation of the AA-dependent photocurrent signal. By quantifying the degree of such photocurrent suppression, highly sensitive detection of CPF was achieved with a broad dynamic range of 0.1 ng/mL to 5 μg/mL and the LOD of 0.03 ng/mL. The sensor exhibited excellent operational stability (<5.5% RSD over 50 cycles), high selectivity against common interferents, and reliable performance in complex matrices (89–114% recovery in serum and agricultural samples). This work not only presents a robust analytical tool for food safety and biological monitoring but also provides new insights into the design of multifunctional heterojunction-based PEC sensors for dual-targets detection.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Zengxing Li,Kim Hoong Ng,Shen Xu,Yingzhen Zhang,Yonggang Lei,Jianying Huang,Yuekun Lai
The realization of solar-driven photoelectrochemical (PEC) process lies in the success development of materials with excellent photoelectric properties. Past reports identified TiO 2 , upon modified with both Cd and ZnIn 2 S 4 (ZIS), exhibits promising PEC performance; however, at the cost of tedious preparation. In view of this, our work proposes a facile one-step hydrothermal strategy to deposit both modifiers onto the pre-obtained TiO 2 nanotubes (NTs), realizing rose-like TiO 2 /ZnIn 2 S 4 (TiO 2 /ZIS) or tremella-like TiO 2 /Cd:ZnIn 2 S 4 (TiO 2 /Cd:ZIS) with improved PEC performances. Interestingly, the thickness of ZIS petals, which deposited on top of TiO 2 NTs, is positively-correlated to its Cd-composition, signifying the substitutional doping of Cd into the unit cell of ZIS. This renders robust ionic interactions between the constituents, prompting the enhanced optical properties of TiO 2 in conjecture to its reduced impedance. As a result, the recombination rate of photo-electric-derived carriers was drastically suppressed, with an improved photocurrent density of 606.2 μA cm −2 recorded by TiO 2 /Cd:ZIS photoanode under solar irradiation. Such performance is 80 times and 5.16 times higher than those of bare TiO 2 NTs and TiO 2 /ZIS counterparts. The photoconversion efficiencies in terms of incident photon-to-current conversion efficiency (IPCE) and applied bias photon current efficiency (ABPE) for TiO 2 /Cd:ZIS were significantly improved too, recorded at 1.12% and 0.38%, respectively, under standard evaluation condition. As summary, our work proposes a facile one-step hydrothermal approach that simultaneously-deposit both Cd and ZIS onto TiO 2 photoanode for an enhanced PEC performance. This opens up a wider horizon for PEC technology , further unlocking its potential in both energy and environmental applications.
研究领域:
材料科学
·
能源与环境科学
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DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 6
·1-9
·
IF 6.232
Li Xiaomeng,Kong Weisu,Qin Xia,Qu Fengli,Lu Limin
A facile and sensitive self-powered cathodic photoelectrochemical (PEC) aptasensor is reported for the detection of prostate-specific antigen (PSA) based on CuO-Cu 2 O nanowire array grown on Cu mesh (CuO-Cu 2 O NWA/CM) as electrode. The mixed narrow band gaps of the CuO-Cu 2 O heterostructure ensured its wide absorption band, effective electron/hole separation, and high photocatalytic activity in the visible region. In addition, nanowires directly grown on the substrate provided high specific surface area and exposed abundant active sites, thus guaranteeing its high photocatalytic efficiency. Therefore, the self-powered sensor exhibited favorable analytical performance with fast response, wide linear ranges of 0.01 to 5 ng/mL and 5 to 100 ng/mL, an acceptable detection limit of 3 pg/mL, and reasonable selectivity and stability. The proposed CuO-Cu 2 O NWA/CM can be considered a promising visible light-responsive photoactive material for fabrication of PEC aptasensor with high performance.
a Schematic illustration of construction process of PEC sensing platform based on the CuO-Cu 2 O composite for PSA detection. b Schematic mechanism of the operating PEC system.
研究领域:
分析化学
·
生物传感器
·
纳米材料
·
癌症诊断
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xingchen Fu,Hui Chang,Zhichao Shang,Pingle Liu,Jikai Liu,He'an Luo
Cuprous oxide (Cu 2 O) has been envisioned as a promising photocathode material for photoelectrochemical (PEC) water reduction due to its abundance, scalability and nontoxicity. Herein, a three-dimensional (3D) Cu 2 O nanorods (NRs) photocathode is prepared by in-situ growing Cu 2 O NRs on a copper foam substrate. The bare 3D Cu 2 O NRs photocathode exhibits a high photocurrent density of −4.02 mA cm −2 at 0 V versus the reversible hydrogen electrode (RHE) under AM 1.5 G simulated sunlight. The oxygen vacancies enriched Ti 3 C 2 T X flakes are obtained by reducing Ti 3 C 2 T X with H 2 /Ar gas (denoted as H:Ti 3 C 2 T X ). The H:Ti 3 C 2 T X /Cu 2 O, Ti 3 C 2 T X /Cu 2 O as well as Au/Cu 2 O composite photocathodes are fabricated through a facile dip-coating method. The H:Ti 3 C 2 T X /Cu 2 O and Ti 3 C 2 T X /Cu 2 O yield a photocurrent density of −5.41 and −4.45 mA cm −2 respectively, which is higher than the bare Cu 2 O and Au/Cu 2 O (−4.31 mA cm −2 ). The results suggest that the Ti 3 C 2 T X is more effective than noble metal Au for improving the PEC performance of Cu 2 O photocathode. The superior performance of H:Ti 3 C 2 T X /Cu 2 O is attributed to enriched oxygen vacancies in the H:Ti 3 C 2 T X which can enhance the conductivity, light-harvesting efficiency and charge-transfer ability of fabricated photocathode. A PEC tandem cell with H:Ti 3 C 2 T X /Cu 2 O as the photocathode and BiVO 4 as the photoanode is designed for unassisted solar water splitting. Due to the high porosity and optical transmittance of the 3D copper foam substrate, we illuminate the cell from the H:Ti 3 C 2 T X /Cu 2 O side rather than from the BiVO 4 side in usual fashion. The present configuration exhibits a 1.6 times higher solar-to-hydrogen (STH) conversion efficiency of 0.55% than the conventional design with a STH conversion efficiency of 0.34%. The enhanced STH conversion efficiency in our configuration is due to the higher light-harvesting efficiency.
研究领域:
材料科学
·
纳米技术
·
光电化学
·
可再生能源
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jiale Yang,Yunhao Gao,Zhiyuan Zhou,Jingyue Tang,Gang Tang,Junfan Niu,Xi Chen,Yuyang Tian,Yan Li,Yongsong Cao
Growing concerns about environmental pollution and future food supplies have encouraged the development of controlled release formulation of pesticides. Porous hollow silica (PHS) is an ideal carrier to prepare pesticide microcapsule due to its hollow structure, high surface area, and biocompatibility. However, the cumbersome preparation process of pesticide microcapsule based on PHS severely restricted its extensive development and application in pesticide products. Herein, an improved soft-template method for preparing pesticide loaded PHS was developed by using newly prepared tributylhexadecylphosphonium dicyanamide [P 44416 ][N(CN) 2 ] as the solvent and soft-template agent. The model pesticide prochloraz (PRO) was entrapped inside PHS in situ without loading process during the preparation process and a core–shell structure sphere (PRO@PIL-PHS-PEC microcapsule) was obtained by coating PRO@PIL-PHS with pectin in solution through electrostatic adsorption. The obtained PRO@PIL-PHS-PEC microcapsules had high drug encapsulation efficiency and good photostability with pectinase and pH responsive release properties. Plate antagonism tests and pot trials indicated that the PRO@PIL-PHS-PEC had a significant long-term control efficacy against S. sclerotiorum and no adverse impact on the growth of rapeseed plant. The prepared PRO@PIL-PHS-PEC could effectively reduce the use of pesticides by significantly improving the effective utilization rate and efficacy of pesticides. The simple and green method for synthesis of PRO@PIL-PHS-PEC based on PIL would have great potential for large-scale application of controlled release formulation in the field of pesticides.
研究领域:
农业科学
·
材料科学
·
环境科学
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DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Wenyan Yan,Shuyue Li,Baoqing Bai,Ying Zhang,Jinhua Zhang,Tao Bo,Qinghua Wang,Ying Gu,Yukun Yang,Shuo Wang
A MIP-modified MOF/COF hybrid nanoplatform for PEC sensing, adsorption, and photocatalytic degradation was developed. • The MOF/COF hybrid enhanced photocurrent through improved light absorption and charge separation. • The MIP layer provided high selectivity. • The platform enabled ultrasensitive PAT detection and efficient adsorption-photocatalytic degradation. Rational design of photoactive materials is essential for the sensitive detection and efficient removal of hazardous contaminants. Herein, a visible-light-responsive covalent organic framework/metal-organic framework (COF/MOF) hybrid with uniform COF layers grown in-situ on the MOF surface, followed by the introduction of a molecularly imprinted polymer (MIP) layer via a sol-gel process, was constructed for the PEC sensing, adsorption, and photocatalytic degradation of patulin. The hybrid architecture enhanced photoelectrochemical performance by facilitating charge separation and improving light harvesting. The resulting PEC sensor exhibited a wide linear range (0.1 nM-1 mM) and a low detection limit (0.055 nM), along with good reproducibility and stability in real samples. Moreover, the MIP/MOF/COF hybrid enabled efficient adsorption and photocatalytic degradation of patulin, driven by photogenerated holes and superoxide radicals. This work provides a promising strategy for the efficient and highly sensitive detection and removal of contaminants. Download: Download high-res image (236KB) Download: Download full-size image
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高影响因子
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
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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）