SURFACE REVIEW AND LETTERS
·
2014
·
IF 0.367
ZHUOYUAN YANG,YUQING MIAO,TIANRUI WANG,MINGSHU XIAO,XIAOCAI LIANG,YANG YANG,WEIWEI LI
In this paper, we first fabricated a nanoPt modified platinum electrode. Then through a simple method, the electrode surface was introduced with a submonolayer of bismuth that acted as an effective promoter. Cyclic voltammetry and other characterizations were employed. The obtained Bi III / nanoPt / Pt electrode exhibited two greatly increased oxidation peaks at negative and positive potential areas, respectively. The signals were far larger than that of platinum electrode because of the large true surface area of nanoparticles and the catalysis of bismuth adsorbed on platinum. In the presence of bismuth, the platinum active sites could combine with more OH - from bismuth hydroxyl to form a new active site for the oxidation of glucose. The prepared Bi III / nanoPt / Pt electrode given high sensitivity and excellent linearship to glucose detection and showed the potential application in the areas of electrocatalysis or electroanalysis.
研究领域:
电化学
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2010
·
IF 4.243
Jingming Gong,Lianyi Wang,Xingju Miao,Lizhi Zhang
We developed a simple strategy for designing a sensitive electrochemical stripping voltammetric sensor for organophosphate pesticides (OPs) based on solid-phase extraction (SPE) using nanosized Pt intercalated Ni/Al layered double hydroxides (labeled as NanoPt-LDHs). By assembling NanoPt with LDHs together, the resulting NanoPt-LDHs are highly efficient to capture OPs. It dramatically facilitates the enrichment of OPs onto their surface and realizes the sensitive stripping voltammetric detection of methyl parathion (MP) as a model of OPs. The stripping analysis shows highly linear over MP concentration ranges of 0.001–0.15 and 0.3–1.0 μg mL − 1 with a detection limit of 0.6 ng mL –1 (S/N = 3). The combination of NanoPt, LDHs, SPE, and square-wave voltammetry (SWV) provides a fast, simple, and sensitive electrochemical method for OPs.
研究领域:
分析化学
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环境科学
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农业科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2016
·Vol. 23
·期 10
·10050-10057
·
IF 2.76
Xiao Hanshuang,Lv Baoying,Gao Junxia,Zhao Guohua
A hydrothermal electrocatalytic oxidation (HTECO) method is adopted to treat the biorefractory and toxic 2,4-dichlorophenoxyacetic acid (2,4-D) herbicides wastewater on nano-Pt/Ti electrode in the existence of H 2 O 2 . Comparisons for the removal of 2,4-D and total organic carbon (TOC) have been carried out between HTECO with individual electrochemical oxidation (EO) and hydrothermal catalytic oxidation (HTCO), showing that high mineralization efficiency was obtained in HTECO process. The possible factors resulting in the high removal efficiency in HTECO process have been studied by investigating the properties of the electrode and solution in hydrothermal condition, the amount of active radicals, the decay kinetic, and evolution of main intermediates of 2,4-D. Thus, an enhanced mechanism for HTECO method for the treatment of herbicides wastewater has been obtained.
研究领域:
环境工程
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电化学工程
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水污染控制
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高级氧化技术
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环境催化
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污染物降解动力学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Yaqing Yin,Tingting Liu,Dan Liu,Zhao Wang,Qibo Deng,Deyu Qu,Zhizhong Xie,Haolin Tang,Junsheng Li
Despite recent progress in the development of earth abundant electrochemical catalyst for hydrogen evolution reaction (HER), Pt based materials still stand as the state of the art HER catalyst. Due to the high cost of Pt, it is desirable to increase the utilization efficiency of Pt in practical HER process to a realize cost effective hydrogen production . Herein, we repot a novel nitrogen doped ordered mesoporous carbon supported Pt (Pt@NOMC-A) catalyst with a low Pt loading of 7.2 wt% and show that the synergy between Pt nanoparticles and carbon support, as well as the physical confinement offered by the carbon support enhance the electrochemical performance of the novel catalyst. Pt@NOMC-A exhibits a low HER overpotential comparable with commercial 20 wt% Pt/C catalyst under acidic, neutral and alkaline condition. Furthermore, Pt@NOMC-A shows a superior electrochemical stability under working conditions suppressing that of commercial Pt/C catalyst.
研究领域:
材料科学
·
电化学
·
能源材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Jin Cui,Gongzheng Wang,Li Xian Yip,Mengzhen Dong,Mengyao Mu,Liya Tian,Yuan Gao,Qing Fan,Qiang Zhu,Xinya Zhao,Xueli Xu,David Tai Leong,Xiao Sun
Early detection and timely intervention are essential to prevent liver fibrosis from progressing to cirrhosis or hepatocellular carcinoma. Herein, utilizing the enhanced ferritin-manganese interaction by nanoplatinum growth, a novel ferritin-platinum-manganese magnetic resonance nanoplatform with RGD grafting and metformin loading (FNMMR) is developed. RGD can enhance the targeting ability of the nanoplatform toward integrin αVβ3 on activated hepatic stellate cells (aHSCs) in liver fibrosis. Systemic delivery of FNMMR shows clear degree-dependent magnetic resonance contrast enhancement in liver fibrosis. 3D reconstruction techniques and histogram-based features are achieved to qualitatively and quantitatively analyze the inhomogeneous liver fibrosis areas. FNMMR with catalase-like activity can catalyze the generation of O 2 to alleviate the liver fibrosis hypoxia and inhibit the expression of HIF-1α, blocking the TGF-β1/Smad signaling pathway. In addition, metformin shows synergy with HIF-1α reduction in blocking the TGF-β1/Smad pathway, effectively inhibiting the activation of HSCs and reducing collagen formation. Furthermore, FNMMR can achieve real-time anti-fibrotic therapy monitoring by magnetic resonance imaging. Importantly, no obvious side effects can be observed in both histological and hematology examinations. Therefore, this work presents a novel nanoplatform for accurate liver fibrosis diagnosis and synergistic anti-fibrotic therapy with real-time monitoring.
研究领域:
医学影像
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纳米技术
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药理学
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分子生物学
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治疗学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）