Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing
A mildly one-pot method is developed for the synthesis of quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles (TANPs) at room temperature through the co-reduction of AuCl4-, PtCl6- and Co2+ with hydrazine hydrate. Characterizations of XRD, XPS, HRTEM, EDS and SAED successfully reveal the crystal...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651320310897 |
| _version_ | 1818743437575323648 |
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| author | Bo Zhang Nana She Jing Du Meng Zhang Guozhen Fang Shuo Wang |
| author_facet | Bo Zhang Nana She Jing Du Meng Zhang Guozhen Fang Shuo Wang |
| author_sort | Bo Zhang |
| collection | DOAJ |
| description | A mildly one-pot method is developed for the synthesis of quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles (TANPs) at room temperature through the co-reduction of AuCl4-, PtCl6- and Co2+ with hydrazine hydrate. Characterizations of XRD, XPS, HRTEM, EDS and SAED successfully reveal the crystal structure, composition, valence and morphology of Au1.5Pt1Co1 TANPs, respectively. The glassy carbon electrode (GCE) modified by Au1.5Pt1Co1 TANPs with good dispersion and multi-density surface defects occupies the optimal electrochemical active surface area (ECSA). After the coated poly-L-cysteine (P-L-Cys) film on the Au1.5Pt1Co1/GCE surface, the morphology, element mapping and surface roughness of the P-L-Cys/Au1.5Pt1Co1/GCE are investigated via FESEM and AFM to verify continuous electrode modification processes. The electrochemical behaviors of the composite electrode for hydroquinone (HQ) are evaluated by cyclic voltammetry (CV) with interfacial properties of adsorption and diffusion. Differential pulse voltammetry (DPV) for HQ electrochemical sensing at 0.10 V (vs. SCE) exhibits two linear response ranges from 0.1 to 30 and 30–200 μM, respectively. A low detection limit (S/N = 3) of 0.045 μM is obtained with a sensitivity of 4.247 μA μM−1·cm−2. The resulting P-L-Cys/Au1.5Pt1Co1/GCE also presents ascendant selectivity, repeatability, reproducibility and stability. In addition, the established method is applied to the assessment of the HQ level in real water samples (mineral water, tap water and lake water) with the satisfactory results of spiked recoveries. The sensor may become a promising tool for the trace analysis of the electroactive substance in food or environmental samples. |
| first_indexed | 2024-12-18T02:28:24Z |
| format | Article |
| id | doaj.art-841c3471a7c3478ba1dd826fc8d509e0 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-18T02:28:24Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-841c3471a7c3478ba1dd826fc8d509e02022-12-21T21:23:58ZengElsevierEcotoxicology and Environmental Safety0147-65132021-01-01207111251Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensingBo Zhang0Nana She1Jing Du2Meng Zhang3Guozhen Fang4Shuo Wang5State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, ChinaState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, ChinaState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, ChinaState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, ChinaState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China; Corresponding author.State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China; Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China; Corresponding author. State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China.A mildly one-pot method is developed for the synthesis of quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles (TANPs) at room temperature through the co-reduction of AuCl4-, PtCl6- and Co2+ with hydrazine hydrate. Characterizations of XRD, XPS, HRTEM, EDS and SAED successfully reveal the crystal structure, composition, valence and morphology of Au1.5Pt1Co1 TANPs, respectively. The glassy carbon electrode (GCE) modified by Au1.5Pt1Co1 TANPs with good dispersion and multi-density surface defects occupies the optimal electrochemical active surface area (ECSA). After the coated poly-L-cysteine (P-L-Cys) film on the Au1.5Pt1Co1/GCE surface, the morphology, element mapping and surface roughness of the P-L-Cys/Au1.5Pt1Co1/GCE are investigated via FESEM and AFM to verify continuous electrode modification processes. The electrochemical behaviors of the composite electrode for hydroquinone (HQ) are evaluated by cyclic voltammetry (CV) with interfacial properties of adsorption and diffusion. Differential pulse voltammetry (DPV) for HQ electrochemical sensing at 0.10 V (vs. SCE) exhibits two linear response ranges from 0.1 to 30 and 30–200 μM, respectively. A low detection limit (S/N = 3) of 0.045 μM is obtained with a sensitivity of 4.247 μA μM−1·cm−2. The resulting P-L-Cys/Au1.5Pt1Co1/GCE also presents ascendant selectivity, repeatability, reproducibility and stability. In addition, the established method is applied to the assessment of the HQ level in real water samples (mineral water, tap water and lake water) with the satisfactory results of spiked recoveries. The sensor may become a promising tool for the trace analysis of the electroactive substance in food or environmental samples.http://www.sciencedirect.com/science/article/pii/S0147651320310897Noble metalTernary alloyElectropolymerizationCompositesHydroquinone oxidizationElectrochemical determination |
| spellingShingle | Bo Zhang Nana She Jing Du Meng Zhang Guozhen Fang Shuo Wang Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing Ecotoxicology and Environmental Safety Noble metal Ternary alloy Electropolymerization Composites Hydroquinone oxidization Electrochemical determination |
| title | Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing |
| title_full | Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing |
| title_fullStr | Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing |
| title_full_unstemmed | Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing |
| title_short | Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing |
| title_sort | nanocomposites based on quasi networked au1 5pt1co1 ternary alloy nanoparticles and decorated with poly l cysteine film for the electrocatalytic application of hydroquinone sensing |
| topic | Noble metal Ternary alloy Electropolymerization Composites Hydroquinone oxidization Electrochemical determination |
| url | http://www.sciencedirect.com/science/article/pii/S0147651320310897 |
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