INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Shouli Bai,Shiyu Jia,Sitong Yan,Yingying Zhao,Pinggui Tang,Ruixian Luo,Yongjun Feng,Dianqing Li,Aifan Chen
Solar energy is used as a driving force to create electron-hole pairs on the surface of electrodes, releasing hydrogen and oxygen through oxidative reductionism, which can directly generate clean energy by a lower resource and environmental costs. The novel ternary photoanode was successfully prepared by Bi nanoparticles modified on BiVO 4 /ZnFe 2 O 4 heterojunction using simple and effective SILAR and impregnation reduction method. Based on the successful construction of heterostructure to accelerate the separation of electron-hole pairs, the addition of plasmonic nanoarchitectures can effectively capture photons and improve the water oxidation performance of semiconductors through the localized surface plasmon resonance (LSPR). The ternary photoanode shows a significant improvement with bare BiVO 4 photoanode, its photocurrent density reachs 2.72 mA cm −2 at 1.23 V (vs. RHE), which is 4.2 times higher than that of pure BiVO 4 photoanode (0.65 mA cm −2 ). The IPCE and the ABPE are substantially increased by 2.7 times and 5 times higher than single component, respectively.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Yi Deng,Shuqi Quan,Erkang Tian,Jianwen Dong,Meihong Guo,Juan Li,Hao Yang,Shuangquan Lai
Assessment of bacterial viability is vital for food and clinical biosafety, as it reveals pathogen survival and metabolic state, helping predict their potential to persist and cause illness. Herein, we presented a visible light-driven photoelectrochemical assay (termed DzPEC) designed for signal-on detection of live pathogenic bacteria. The DzPEC assay was fabricated using a DNAzyme-functionalized Z-scheme g-C 3 N 4 /V 2 C bio-heterojunction as a photoresposive material and SiO 2 as a photoquencher. The DzPEC assay, which utilizes DNAzyme to target the metabolic endoprotein RNase H2 that is secreted into the extracellular matrix, allows for bacterial viability assessment. Leveraging the Z-scheme heterojunction with high photoactive performance, the DzPEC assay for Salmonella enterica ( S. enterica ), used as a bacteria model, exhibited a detection limit of 141 CFU/mL and the ability to detect live bacterial abundnace as low as 0.1 %. The DzPEC assay demonstrated a strong correlation with RT-qPCR in the detection of S. enterica contamination in complex food and clinical matrices. These findings highlighted the potential of the DzPEC assay in bacterial viability phenotyping and live bacteria-associated biosafety monitoring.
研究领域:
生物传感
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微生物学
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材料科学
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PubMed
高影响因子
Materials
·
2024
·Vol. 17
·期 15
·3779
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IF 3.1
Jiaji Zhang,Zhihua Xiong,Zi Wang,Jinlong Sun
Bismuth-based compounds have been regarded as a kind of promising material due to their narrow bandgap, high carrier mobility, low toxicity, and strong oxidation ability, showing potential applications in the field of photoelectrochemical (PEC) activities. They can be applied in sustainable energy production, seawater desalination and treatment, optical detection and communication, and other fields. As a member of the broader family of bismuth-based materials, β-Bi2O3exhibits significant advantages for applications in engineering, including high photoelectric response, stability in harsh environments, and excellent corrosion resistance. This paper presents the synthesis of β-Bi2O3thin films utilizing the mist chemical vapor deposition (CVD) method at the optimal temperature of 400 °C. Based on the β-Bi2O3thin film synthesized at optimal temperature, a PEC-type photodetector was constructed with the highest responsivity R of 2.84 mA/W and detectivity D of 6.01 × 1010Jones, respectively. The photodetection performance was investigated from various points like illumination light wavelength, power density, and long-term stability. This study would broaden the horizontal and practical applications of β-Bi2O3.
研究领域:
材料科学
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光电材料
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能源与环境科学
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
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IF 14.229
Aziz-Ur-Rahim Bacha,Hanyun Cheng,Jin Han,Iqra Nabi,Kejian Li,Tao Wang,Yang Yang,Saira Ajmal,Yangyang Liu,Liwu Zhang
Visible-light-driven photoelectrochemical (PEC) catalysis has been widely studied as a promising technique for the degradation of organic pollutants in wastewater. Herein, we report a sulfite-enhanced PEC degradation process for the degradation of organic pollutant . The degradation rate was significantly enhanced by ～30 times with the addition of 16 mM sulfite. The Electron Spin Resonance (ESR), Transient Absorption (TA) and hole scavenger studies showed that sulfite radicals ( S O 3 ⦁ - ) were the main reactive species in the reactions. The pollutant degradation pathway was studied by in-situ techniques and mass spectrometer, showing that the sulfite addition can promote the cleavage of aromatic ring C C bond and C N bond.
研究领域:
环境科学
·
催化化学
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高影响因子
Functional Materials Letters
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2023
·
IF 1.3
Meiqi Zhai,Yajie Bai,Xia Li,Fengfeng Wang,Wei-Qiang Fan,Hongye Bai
Photoelectrochemical reduction of nitrate (PEC NRR) to ammonia (NH 3 ) is a promising means with water as hydrogen source under room temperature. The construction of photoelectrode with efficient light response and reaction kinetics is the core point to achieve high NH 3 yield efficiency. Herein, a cerium-based metal organic framework (Ce-MOF) was successfully decorated on the copper phthalocyanine (CuPc). The CuPc/Ce-MOF heterostructure exhibits the ideal nitrate catalytic reduction activity, and the NH 3 yield (−0.6 V versus RHE) increases to 1.58 μ g h − 1 cm − 2 from 0.67 μ g h − 1 cm − 2 (CuPc). Besides, the cycle experiments reveal that the CuPc/Ce-MOF heterostructure has maintained good catalytic stability. This work explores the PEC NRR process mechanism of CuPc/Ce-MOF samples and provides a new idea for green NH 3 production.
研究领域:
材料科学
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电化学
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光化学
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催化
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高影响因子
ELECTROCHIMICA ACTA
·
2020
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IF 6.215
Weicheng Cui,Hongye Bai,Jianpeng Shang,Fagen Wang,Dongbo Xu,Jinrui Ding,Weiqiang Fan,Weidong Shi
Constructing the high-performance photoanode is critical to improve photoelectrochemical (PEC) efficiency, but it is still an inevitable challenge to rationally fabricate the organic-inorganic hybrid-photoanode system. For the first time, we report a novel hybrid-photoanode built from ultrathin NiFe-MOF and TiO 2 by a sacrifice template method. The in-situ etch of NiFe-layered double hydroxide (LDH) on the surface of TiO 2 has been successfully realized in the coordination environment, for creating coordinately unsaturated metal sites on NiFe-MOF. The coordinately unsaturated metal sites could significantly promote the water oxidation kinetic , compared with conventional electrode/electrolyte interface. The photocurrent density of the NiFe-MOF/TiO 2 has reached about 3.35 times of bare TiO 2 at 1.23 V (vs. RHE), and the incident photon to current conversion efficiency (IPCE) value has been improved up to 42% (at 390 nm). The significant augment of the charge injection ( η injection ) of 92.8% and charge separation ( η separation ) efficiency of 37.4% has also been exhibited. Moreover, NiFe-MOF/TiO 2 shows a long-term stability ( < 10% decay) after 4 h of continuous illumination. This work provided a novel and rational strategy about the integration of the inorganic semiconductor and organic MOF , which can provide a new insight into understanding MOF-based catalysts for PEC water splitting.
研究领域:
材料科学
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能源科学
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高影响因子
APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Xiangrong Li,Mengzhou Wu,Wenjun Zheng,Tianhan Hu,Guoqiang Li
A hierarchical InN/Ni/InP photoanode is constructed. • Type-II heterojunction and metal contacts promote efficient charge separation. • The photoanode delivers high photocurrent and near-unity Faradaic efficiency. • Interfacial charge transfer is accelerated by synergistic junction engineering. Photoelectrochemical (PEC) water splitting is frequently hindered by inefficient charge separation and sluggish interfacial charge-transfer kinetics. Here we report a hierarchical InN/PNM/IPQ photoanode composed of vertically aligned indium nitride nanorods (InN NRs), petal-like nickel microspheres (P-Ni MSs), and indium phosphide quantum dots (InP QDs). In this architecture, the InP QDs establish a type-II InN/InP heterojunction that promotes spatial charge separation, whereas the P-Ni MSs provide efficient electrical contact and facilitate interfacial charge extraction. Consequently, the InN/PNM/IPQ photoanode delivers a photocurrent density of 6.89 mA cm −2 at 1.45 V RHE and an ABPE of 1.21% at 0.86 V RHE , surpassing those of the pristine InN and the corresponding binary photoelectrodes. Under AM 1.5G illumination, it also exhibits a hydrogen evolution rate of 289.8 μmol h −1 , a Faradaic efficiency of 97.6% and stable PEC output over 8500 s. Electrochemical impedance spectroscopy and transient photocurrent measurements reveal suppressed charge recombination and accelerated interfacial charge transfer, in agreement with the synergistic effects of type-II band alignment and metal–semiconductor junction engineering. This work demonstrates an effective hierarchical heterostructure design for enhancing the performance of InN-based photoelectrodes toward solar-driven PEC water splitting. A hierarchical photoanode composed of indium nitride nanorods, petal-like nickel microspheres, and indium phosphide quantum dots is constructed to enhance photoelectrochemical water splitting. The synergistic effects of a type-II heterojunction and optimized metal–semiconductor interfaces promote efficient charge separation and interfacial charge transfer, resulting in improved photocurrent density, stability, and Faradaic efficiency. Download: Download high-res image (182KB) Download: Download full-size image
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高影响因子
Analytical Methods
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2025
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IF 2.6
Changqiu Ma,Daheng Jiang,Linghui Zeng,Lixin Zhu,Xiaoliang Xu
Conventional photoelectrochemical (PEC) biosensors based on ZnO and TiO2 face challenges in applications in vivo due to the poor penetration of excitation light through the skin. To address this limitation, we designed a novel near-infrared (NIR)-driven FTO@UC@Cu2O@TiO2 heterojunction biosensor for subcutaneous L-cysteine detection. NIR light penetrates the skin and excites the upconversion material (called UC for short, NaYF4:Er, Yb), which emits visible light at 540 nm. This emission activates the Cu2O semiconductor to generate photocurrent. The Cu2O@TiO2 heterojunction facilitates charge carrier separation and suppresses electron-hole recombination. The biosensor demonstrates stable, sensitive, and reproducible detection of L-cysteine over a range of 10 μM to 10 pM, with a detection limit of 5.2 pM. Notably, it also enables subcutaneous detection covering a range from 10 μM to 100 pM, with a detection limit of 74 pM. These results provide a promising strategy for real-time in situ monitoring of L-cysteine in clinical applications.
研究领域:
生物传感器
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纳米技术
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分析化学
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生物医学工程
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光化学
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高影响因子
Journal of Materials Chemistry B
·
2017
·Vol. 5
·期 20
·3718-3727
·
IF 4.543
Saibo Chen,Hao Nan,Xuan Zhang,Yuting Yan,Zhou Zhou,Ying Zhang,Kun Wang
Considering that ultraviolet light may cause the denaturation of biomaterials, searching for and engineering innovative and advanced nanomaterials with excellent photoelectrochemical properties under visible light illumination are of great significance in the fundamental understanding and application of photoelectrochemical (PEC) sensors. As a widely applied visible light response material, the applications of Bi2WO6 in PEC fields were restricted because of the rapid recombination of photoinduced electron–hole pairs. In this work, Bi2WO6 functionalized reduced oxide (Bi2WO6–rGO) nanocomposites (NCs) were prepared by a one-step solvothermal method. After optimizing the content of rGO, the Bi2WO6–rGO2.94% NCs displayed enhanced photocurrent intensity (the starting mass ratios of GO to Bi2WO6 = 0.0294), which was nearly 2.7-fold compared to that of pure Bi2WO6 nanoparticles because of the separation of the photoinduced carriers and the enhancement of visible light absorption. Based on the coupling of Pb2+-induced allosteric transition of G-quadruplex DNAzyme and the enzymatic biocatalytic precipitation (BCP), Bi2WO6–rGO2.94% NCs were applied in the construction of a novel PEC sensor for the determination of Pb2+. The as-fabricated PEC sensor exhibited good anti-interference ability and a good linear relationship was obtained between the photocurrent intensity and the logarithm of the Pb2+ concentration over a concentration range from 0.01 to 50 μM and with a detection limit of 3.3 nM (S/N = 3), indicating that Bi2WO6–rGO NCs would be promising materials for PEC sensing.
研究领域:
材料科学
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环境科学
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生物传感
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenxia Dong,Zhongping Li,Wen Wen,Bin Liu,Guangming Wen
Nanomaterial selection is critical for photoelectrochemical (PEC) sensing. In this report, a novel cathodic photoelectrochemical (PEC) strategy was proposed for the detection of doxorubicin hydrochloride (Dox) and gentamicin sulfate (CN). The photocathode was synthesized by noncovalently coupling cadmium sulfide (CdS) to the porphyrin-derived metal–organic framework (CdS@PCN-224). This type of assembly created a pleasant interface for the combination of doxorubicin hydrochloride and gentamicin sulfate, resulting in a good CdS@PCN-224 donor–acceptor system. When compared to a single optoelectronic material, its photocurrent is enhanced by unprecedented nine times. This research could pave the way for the realization of PCN-224’s enormous potential in PEC sensing.
研究领域:
材料科学
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分析化学
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医学检测
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PubMed
高影响因子
Analytical Methods
·
2024
·Vol. 16
·期 9
·1330-1340
·
IF 2.7
Cuizhong Zhang,Qiang Wang,Chuanze Zhong,Ye Yang,Xuexue Liang,Peican Chen,Liya Zhou
Designing a simple and sensitive photoelectrochemical (PEC) sensor is crucial to addressing the limitations of routine analytical methods. The sensitivity of the PEC sensor, however, relies on the photoelectric material used. In this manuscript, composites of MoS2/rGO (MG) with a large area and layered structure are prepared by simple steps. This material exhibits sensitivity to visible light and demonstrates outstanding photoelectric conversion performance. The constructed PEC aptasensor using this material to detect aflatoxin B1 (AFB1) shows significantly higher sensitivity and stability compared to similar sensors. This may be attributed to the presence of surface defects in MoS2, which provide more active sites for photocatalysis. Additionally, graphene oxide (GO) is reduced to rGO by thiourea and forms a heterojunction with MoS2, enhancing charge carrier separation and interfacial electron transfer. Our research has revealed that the photocurrent intensity of the aptamer electrode decreases with an increase in AFB1 concentration, resulting in a “signal-off” PEC aptasensor. The detection limit of this aptasensor is 2.18 pg mL−1, with a linear range of 0.001 to 100 ng mL−1. This result will also provide a reference for the study of other mycotoxins in food.
研究领域:
食品科学
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生物传感
·
光电化学
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiaoqiang Liu,Xiaohe Huo,Peipei Liu,Yunfei Tang,Jun Xu,Xiuhua Liu,Yanmei Zhou
In the present work, MoS 2 nanosheets were composited with TiO 2 nanorods to obtain a heterostructure with improved photoelectrochemical (PEC) performance. TiO 2 nanorods were initially prepared using a hydrothermal method, and then MoS 2 nanosheets were synthesized using TiO 2 nanorods as the substrates. Various spectroscopic and microscopic methods were used to investigate the morphology and composition of the composite. Electrochemical impedance spectroscopy was also conducted to demonstrate the excellent electrical conductivity of the composite. The bioactivity of glucose oxidase (GOx) to glucose was validated with cyclic voltammetry in air-saturated solution. Finally, a PEC biosensor was fabricated by immobilizing GOx on MoS 2 nanosheet-TiO 2 nanorod composite modified ITO electrode. Owing to the high specific surface area, good conductivity, excellent biocompatibility and small band gap associated with this composite, the PEC glucose biosensor exhibited a dynamic range of 0.1–10.5 mM, sensitivity of 0.81 μA mM −1 , and a detection limit of 0.015 mM within the visible spectrum.
研究领域:
材料科学
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纳米技术
·
生物传感器
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电化学
·
光电化学
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高影响因子
危险品化学品经营许可证（带存储）