Microchimica Acta最新文献_第8页

Selective synthesis of fluorescent metal nanoclusters over metal nanoparticles 在金属纳米颗粒上选择性合成荧光金属纳米团簇

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-11 DOI: 10.1007/s00604-024-06812-4

Sheetal Sheetal, Ritika Mittal, Nancy Gupta

{"title":"Selective synthesis of fluorescent metal nanoclusters over metal nanoparticles","authors":"Sheetal Sheetal, Ritika Mittal, Nancy Gupta","doi":"10.1007/s00604-024-06812-4","DOIUrl":"10.1007/s00604-024-06812-4","url":null,"abstract":"<div><p>Metal nanoparticles and nanoclusters are pivotal in nanomaterial science, each offering unique properties for diverse applications. Nanoclusters, typically smaller than 2 nm, exhibit distinct optical and electronic characteristics due to quantum confinement, resulting in fluorescence emission. In contrast, metal nanoparticles, sized between 2 and 100 nm, exhibit absorption spectra. Both are synthesized by reducing metal precursors in the presence of a suitable stabilizing agent. While nanoparticles have been the historical research focus, recent attention has shifted to nanoclusters for their exceptional properties and their synthesis has evolved significantly over the past few decades. This review discusses the selective synthesis of nanoclusters over nanoparticles, emphasizing the role of various factors such as ligand concentration (metal-to-ligand ratio), reducing agents, pH, reaction time and temperature, solvents, and assistant reagents. Higher ligand concentrations stabilize smaller nanoclusters by preventing aggregation, while lower concentrations lead to larger nanoparticles. Stronger reducing agents produce smaller, more uniform particles, whereas weaker reducing agents yield larger ones. pH affects nanocluster size and emission properties. Solvents and assistant reagents influence reaction kinetics and material properties. Temperature and reaction time also play critical roles in controlling nanocluster size and properties. These insights guide the optimized synthesis of metal nanoclusters, for their specific applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly specific detection of ROR1 cancer biomarker with bipolar electrochemiluminescence 利用双极电化学发光技术高度特异性地检测 ROR1 癌症生物标记物

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-08 DOI: 10.1007/s00604-024-06815-1

Seyed Mohammad Reza Mortazavi, Morteza Hosseini, Guobao Xu, Hossein Naderi-Manesh, Mohammad Reza Ganjali

{"title":"Highly specific detection of ROR1 cancer biomarker with bipolar electrochemiluminescence","authors":"Seyed Mohammad Reza Mortazavi, Morteza Hosseini, Guobao Xu, Hossein Naderi-Manesh, Mohammad Reza Ganjali","doi":"10.1007/s00604-024-06815-1","DOIUrl":"10.1007/s00604-024-06815-1","url":null,"abstract":"<div><p>An electrochemiluminescence (ECL) detection system is presented integrated with a bipolar electrode system for sensitive cancer diagnosis. In order to achieve the highest electrical conductivity and redox-active surface area, MXene was chosen as the material for the bipolar electrode. As part of the detection process, the anodic pole of the bipolar electrode was modified with the receptor tyrosine kinase like orphan receptor 1 (ROR1) antibody, followed by an immunoassay using the ROR1 antibody-modified Ag triangle that was identified as significantly enhancing ECL. We measured the ECL of luminol using the anode pole of BPE as an analytical signal in the presence of H<sub>2</sub>O<sub>2</sub>. Additionally, 3D-printed microchannels were used to fabricate the BPE system, to reduce the quantity of sample required. It has been shown that the present immunosensors are low-cost and sensitive in detecting types of cancer, with an extended linear range of 10 fg mL<sup>−1</sup> to 1 µg mL<sup>−1</sup> in the analysis of synthetic samples and achieving an accuracy of ~ 90% in diagnosing ten unknown real samples.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly sensitive and rapid detection of Vibrio parahaemolyticus using a dual-recognition platform based on functionalized quantum dots and aptamer 利用基于功能化量子点和适配体的双重识别平台高灵敏、快速地检测副溶血性弧菌

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-08 DOI: 10.1007/s00604-024-06821-3

Yu Chen, Ruiwen Li, Hao Shen, Nana Li, Wenjing Gao, Haipeng Guo, Bin Feng, Shaoning Yu

{"title":"Highly sensitive and rapid detection of Vibrio parahaemolyticus using a dual-recognition platform based on functionalized quantum dots and aptamer","authors":"Yu Chen, Ruiwen Li, Hao Shen, Nana Li, Wenjing Gao, Haipeng Guo, Bin Feng, Shaoning Yu","doi":"10.1007/s00604-024-06821-3","DOIUrl":"10.1007/s00604-024-06821-3","url":null,"abstract":"<div><p>As one of the most harmful pathogenic bacteria in shrimp aquaculture, <i>Vibrio parahaemolyticus</i> often causes massive mortality in shrimp. Accurate and rapid detection of <i>V. parahaemolyticus</i> in shrimp farming is essential for avoiding huge economic losses caused by related diseases. In this study, we designed a dual-recognition platform for efficient identification and quantification of <i>V. parahaemolyticus</i>. First, the target bacterium was captured with magnetic beads functionalized by aptamers (Apt-MBs), and then, the broad-spectrum fluorescent probe FcMBL@CdSe-ZnS was used to detect the bacterium based on the interactions between fragment crystallizable mannose-binding lectin (FcMBL) and pathogenic bacteria. The proposed dual-recognition strategy centered around aptamers and FcMBL@CdSe-ZnS was applied to definite quantification of <i>V. parahaemolyticus</i> over a wide range of 10–10<sup>8</sup> CFU/mL with a limit of detection of 4 CFU/mL within 55 min. The feasibility was demonstrated by using the platform to detect <i>V. parahaemolyticus</i> from shrimp intestine, aquaculture water, and seawater.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fluorescence-based lateral flow immunoassay using AIEgen-encapsulated nanoparticles to rapidly and sensitively detect pro-gastrin-releasing peptide 基于荧光的横向流动免疫分析法，使用 AIEgen 封装的纳米颗粒快速灵敏地检测促胃泌素释放肽

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-08 DOI: 10.1007/s00604-024-06818-y

Xiangyang Shao, Xiaoli Liu, Lianzi Yu, Xiuzhi Yu, Jianhua Hu

引用次数: 0

A highly sensitive and selective label-free impedimetric immunosensor for the detection of interleukin-6 based on AuNPs@pDA@NiCo2S4@MoS2 nanocomposite 基于 AuNPs@pDA@NiCo2S4@MoS2 纳米复合材料的检测白细胞介素-6 的高灵敏度和高选择性无标记阻抗免疫传感器

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-07 DOI: 10.1007/s00604-024-06779-2

Yisi Wang, Junying Zhang, Xinxin Lv, Ya Ding, Yaolong Wang, Yuanhua Liu, Chunyong Wu, Gongjun Yang

{"title":"A highly sensitive and selective label-free impedimetric immunosensor for the detection of interleukin-6 based on AuNPs@pDA@NiCo2S4@MoS2 nanocomposite","authors":"Yisi Wang, Junying Zhang, Xinxin Lv, Ya Ding, Yaolong Wang, Yuanhua Liu, Chunyong Wu, Gongjun Yang","doi":"10.1007/s00604-024-06779-2","DOIUrl":"10.1007/s00604-024-06779-2","url":null,"abstract":"<div><p>A highly sensitive and selective label-free impedimetric immunosensor based on AuNPs@pDA@NiCo<sub>2</sub>S<sub>4</sub>@MoS<sub>2</sub> nanocomposite modified on the surface of a screen-printed electrode (SPE) was designed for the detection of interleukin-6 (IL-6). The distribution of NiCo<sub>2</sub>S<sub>4</sub> nanoparticles on MoS<sub>2</sub> nanosheets was able to prevent them from agglomerating. The polydopamine (pDA) layer was coated on the surface of NiCo<sub>2</sub>S<sub>4</sub>@MoS<sub>2</sub> nanosheets by self-polymerization, which improved the stability and biocompatibility of the nanomaterial. The excellent reduction ability of pDA promoted the synthesis of gold nanoparticles (AuNPs), which increased the amount of antibody adsorption and the conductivity of the material. Finally, the antibody (Ab) of IL-6 was immobilized on the surface of AuNPs@pDA@NiCo<sub>2</sub>S<sub>4</sub>@MoS<sub>2</sub> nanocomposite. Electrochemical impedance spectroscopy (EIS) was used to detect the change of impedance before and after the immune response between Ab and IL-6 antigen (IL-6). Under the optimal experimental conditions, the relative change in impedance and the logarithmic concentration of IL-6 showed a good linear relationship in the range 1.00 to 1.00 × 10<sup>6</sup> pg/mL, with a low detection limit of 0.97 pg/mL. In addition, the proposed immunosensor performed with good reproducibility, stability, and specificity. It was successfully applied to the determination of IL-6 in patient’s serum samples of head and neck carcinoma with recoveries of 98.40% to 106.5%. To sum up, the proposed label-free impedimetric immunosensor was successfully constructed for IL-6 detection in real samples.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Au@Pt@Pd nanozymes based lateral flow immunoassay for quantitative detection of SARS-CoV-2 nucleocapsid protein in nasal swab samples 基于 Au@Pt@Pd 纳米酶的侧流免疫分析法定量检测鼻拭子样本中的 SARS-CoV-2 核头壳蛋白

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-07 DOI: 10.1007/s00604-024-06819-x

Chengcheng Li, Jinhui Lu, Chao Xiang, Enhui Zhang, Xiaofang Tian, Ling Zhang, Tingting Li, Chengyao Li

{"title":"Au@Pt@Pd nanozymes based lateral flow immunoassay for quantitative detection of SARS-CoV-2 nucleocapsid protein in nasal swab samples","authors":"Chengcheng Li, Jinhui Lu, Chao Xiang, Enhui Zhang, Xiaofang Tian, Ling Zhang, Tingting Li, Chengyao Li","doi":"10.1007/s00604-024-06819-x","DOIUrl":"10.1007/s00604-024-06819-x","url":null,"abstract":"<div><p>Three-metal-core-shell nanoparticles (Au@Pt@PdNPs) providing excellent peroxidase-like activity were applied in lateral flow immunoassay (LFIA), designated as Au@Pt@Pd-LFIA, for detecting the nucleocapsid protein (NP) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). An Au@Pt@Pd-LFIA was developed for quantitatively testing of SARS-CoV-2 NP with a range 0.12–31.25 ng/mL. The limit of detection (LOD) of Au@Pt@Pd-LFIA strip was 0.06 ng/mL, which was 16-fold or eightfold more sensitive than that of the gold lateral flow immunoassay (Au-LFIA) and the gold flower flow immunoassay (AF-LFIA) strips, respectively. For detection of clinical samples from nasal swabs using test strips, Au@Pt@Pd-LFIA had 84.09% sensitivity, 100% specificity, and 92.55% accuracy. In terms of detection time, the testing of Au@Pt@Pd-LFIA strip was 16 min similar to Au-LFIA (15 min) and AF-LFIA (10 min), but much shorter than ELISA (2 h). In conclusion, Au@Pt@Pd-LFIA is a sensitive, rapid, and simple test for quantitative detection of SARS-CoV-2 NP in nasal swab samples.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecularly imprinted electrochemical sensor based on APTES-functionalized indium tin oxide electrode for the determination of sulfadiazine 基于 APTES 功能化氧化铟锡电极的分子印迹电化学传感器用于磺胺嘧啶的测定。

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-05 DOI: 10.1007/s00604-024-06781-8

Samridhi Chopra, Manisha Balkhandia, Manisha Khatak, Navya Sagar, Ved Varun Agrawal

{"title":"Molecularly imprinted electrochemical sensor based on APTES-functionalized indium tin oxide electrode for the determination of sulfadiazine","authors":"Samridhi Chopra, Manisha Balkhandia, Manisha Khatak, Navya Sagar, Ved Varun Agrawal","doi":"10.1007/s00604-024-06781-8","DOIUrl":"10.1007/s00604-024-06781-8","url":null,"abstract":"<div><p>An electrochemical sensor was developed for the sensitive and selective detection of sulfadiazine (SDZ), based on a molecularly imprinted polymer (MIP) film formed on an indium tin oxide (ITO) electrode through a self-assembly process. The SDZ-imprinted ITO electrode (SDZ-MIP/APTES-ITO) was prepared through in situ polymerization using sulfadiazine, methacrylic acid (MAA), ethylene glycol dimethacrylate (EGDMA), and 2,2′-azobisisobutyronitrile (AIBN) as the template, functional monomer, cross-linker, and initiator respectively. Before polymerization, the ITO electrode was functionalized with 3-aminopropyltriethoxysilane (APTES) to promote covalent attachment of the polymer to the electrode. After polymerization, the template molecule SDZ was removed to create selective recognition sites, forming the molecularly imprinted polymer electrode (MIP/APTES-ITO), which facilitates sulfadiazine detection. The sensor’s performance was evaluated using cyclic and differential pulse voltammetry, demonstrating a linear response in the sulfadiazine concentration range 0.1 to 300 μM, with a detection limit of 0.11 μM. The MIP-based sensor exhibited good reproducibility, repeatability, selectivity, and stability in sulfadiazine detection. Its practical applicability was confirmed by the successful quantification of sulfadiazine in spiked milk samples.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142581633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dendritic mesoporous silica loaded with gold nanoclusters and their application in immunochromatographic assay 负载金纳米团簇的树枝状介孔二氧化硅及其在免疫层析检测中的应用。

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-05 DOI: 10.1007/s00604-024-06808-0

Tao Peng, Zhanwei Liang, Jihao Si, Lu Huang, Hua Ye, Xiaoqing Li, Miao Sun, Jie Xie, Xinhua Dai

{"title":"Dendritic mesoporous silica loaded with gold nanoclusters and their application in immunochromatographic assay","authors":"Tao Peng, Zhanwei Liang, Jihao Si, Lu Huang, Hua Ye, Xiaoqing Li, Miao Sun, Jie Xie, Xinhua Dai","doi":"10.1007/s00604-024-06808-0","DOIUrl":"10.1007/s00604-024-06808-0","url":null,"abstract":"<div><p>Novel green-emitting fluorescent microspheres (GreFMPs) were assembled by loading highly luminescent gold nanoclusters (Arg/ATT/AuNCs) on dendritic mesoporous silica nanoparticles (DMSNs) via PEI-mediated electrostatic adsorption. The fluorescence microspheres exhibit excellent monodispersion with average diameters about (254.5 ± 34.6 nm). Compared with free Arg/ATT/AuNCs, the GreFMPs have similar fluorescent properties and biocompatibility but superior environmental tolerance. Subsequently, an immunochromatographic assay based on GreFMPs (GreFMP-ICA) has been successfully developed, which is highly selective toward alpha fetoprotein (AFP) in human serum. Under the optimal parameters, there is a good linear range between 0.5 and 160.0 ng/mL, the limit of detection was found to be about 0.5 ng/mL, and the recovery and relative standard deviation are 81.0 ~ 100.6% and 3.5 ~ 16.6%, respectively. These results manifested that the GreFMPs are beneficial for the rational design of the ICA platform, and the proposed GreFMP-ICA has the potential to screen AFP in clinical applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142581630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visual aptasensor based on PtNPs/g-C3N4 and DNase I for the field detection of acetamiprid 基于 PtNPs/g-C3N4 和 DNase I 的视觉感应器，用于现场检测啶虫脒。

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-05 DOI: 10.1007/s00604-024-06801-7

Linhai Wang, Xiao Hu, Guoqing Yao, Qinhua Chen, Sicen Wang

{"title":"Visual aptasensor based on PtNPs/g-C3N4 and DNase I for the field detection of acetamiprid","authors":"Linhai Wang, Xiao Hu, Guoqing Yao, Qinhua Chen, Sicen Wang","doi":"10.1007/s00604-024-06801-7","DOIUrl":"10.1007/s00604-024-06801-7","url":null,"abstract":"<div><p> A visual aptasensor based on the combination of graphitic carbon nitride loaded with platinum nanoparticles (PtNPs/g-C<sub>3</sub>N<sub>4</sub>) and deoxyribonuclease I (DNase I) was developed for detecting acetamiprid. The prepared PtNPs/g-C<sub>3</sub>N<sub>4</sub> exhibited excellent peroxidase (POD)-like activity, demonstrating the capacity to oxidize the colourless o-phenylenediamine (OPD) to produce the coloured product diaminophenazine (DAP) in the presence of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). The DNA aptamer of acetamiprid can adsorb onto the surface of PtNPs/g-C<sub>3</sub>N<sub>4</sub>, thereby inhibiting its POD activity. The binding of acetamiprid to its aptamer results in the aptamer desorbing from the surface of PtNPs/g-C<sub>3</sub>N<sub>4</sub> and subsequent digestion by DNase I. Ascribed to the synergistic effect of these factors, the aptasensor can achieve the rapid on-site detection of acetamiprid based on the acetamiprid-induced the colour change of the solution just with the smartphone. Furthermore, due to the remarkable fluorescence signal of DAP at 570 nm, the aptasensor under fluorescence mode enables highly sensitive and quantitative detection of acetamiprid with a linear range of 1 ng/mL to 4 µg/mL and a detection limit as low as 0.31 ng/mL. The aptasensor has successfully realized the detection of acetamiprid in river water and cucumber samples, offering a novel perspective for the rapid assessment of environmental pollution and food safety risks associated with acetamiprid residues.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142581635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoelectrochemical detection of Cu2+ based on ZnIn2S4/WO3 Z-scheme heterojunction 基于 ZnIn2S4/WO3 Z 型异质结的 Cu2+ 光电化学检测。

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-11-05 DOI: 10.1007/s00604-024-06785-4

Yuru Shen, Xingyu Zeng, Mingjian Chen, Yun Du, Yinyu Li, Yange Peng, Fang He, Sizhan Wu, Hangdao Qin

{"title":"Photoelectrochemical detection of Cu2+ based on ZnIn2S4/WO3 Z-scheme heterojunction","authors":"Yuru Shen, Xingyu Zeng, Mingjian Chen, Yun Du, Yinyu Li, Yange Peng, Fang He, Sizhan Wu, Hangdao Qin","doi":"10.1007/s00604-024-06785-4","DOIUrl":"10.1007/s00604-024-06785-4","url":null,"abstract":"<div><p>A one-step hydrothermal technique was utilized to generate WO<sub>3</sub> nanosheets on fluorine-doped tin oxide (FTO) (WO<sub>3</sub>/FTO), which were subsequently modified with ZnIn<sub>2</sub>S<sub>4</sub> microspheres to create a Z-scheme heterojunction ZnIn<sub>2</sub>S<sub>4</sub>/WO<sub>3</sub>/FTO electrode for Cu<sup>2+</sup> detection. The heterojunction exhibited excellent photoelectric conversion efficiency, which was nearly 2.5-fold and 5.1-fold greater than that of WO<sub>3</sub> and ZnIn<sub>2</sub>S<sub>4</sub>. The reduced photoelectrochemical response signal was caused by the formation of Cu<sub>x</sub>S and enabled Cu<sup>2+</sup> assessment in water samples. After optimizing the experimental conditions, the anodic photocurrent at 0 V vs SCE in 0.100 M phosphate buffer (pH 7.0) containing 0.100 M <i>L</i>-ascorbic acid was linear with the common logarithm of Cu<sup>2+</sup> concentration from 5.00 nM to 100 μM, with a limit of detection of 1.2 nM (<i>S</i>/<i>N</i> = 3). Satisfactory recovery results were obtained in the analyses of Xiangjiang River water samples.</p></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"191 12","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0