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您的检索式：作者名="Dengchao Wang"
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| 1 | Real-Time and Spatial Electroanalysis of Biomolecules in One Living Cell Using Liquid-Phase Modified Nanopipette显示文摘The well-developed solid-phase modified strategy at the electrode has enabled the preparation of biosensors for the detection of multiple analytes,even in single living cells.However,limited assay elements can be modified at the solid surface,restricting the types of molecules that can be analyzed and the sensitivity of detection.Here,a novel liquid-phase modified strategy at the tip of a nanopipette is designed to realize real-time and local analysis of biomolecules inside the cell that are barely detectable using solid-phase modified nanoelectrodes.This design utilizes the nanotip structure at a platinized carbon open nanopipette to stably retain a nanodroplet that contains the required reagents with high reactivity for the assay of the target analyte.The generated hydrogen peroxide is electrochemically quantified at the Pt layer to carry out the real-time measurement in a living cell with a spatial resolution of 70 nm.Taking advantage of highly spatial and real-time detection,uneven distribution of sphingomyelinase(SMase)in the living CT26 cell is unprecedentedly shown to exhibit the significance in the establishment of liquid-phase modified nanopipette.This new modification strategy opens up a new direction for sensor design and consequently advances the development of biosensors in the chemical and biological research. | Kang Liu Rujia Liu Dengchao Wang Rongrong Pan Hong-Yuan Chen Dechen Jiang | 2023 | CCS Chemistry2023，5，6： | 0 |
| 2 | Deactivation mechanisms and anti-deactivation strategies of molecular sieve catalysts for NO_(x)reduction显示文摘Molecular sieve catalysts,owing to their unique chemical properties,are widely used as catalysts among various catalytic reactions.Abundant Br?nsted acid sites in molecular sieve catalysts usually enable active components to disperse well on the catalyst surface,and help to adsorb a large number of gas molecules to achieve maximum catalytic performance.Therefore,a variety of molecular sieve catalysts have been developed and used in the selective catalytic reduction of NO_(x)by NH_(3)(NH_(3)-SCR).For example,Cu molecular sieve catalysts such as Cu-SSZ-13 and Cu-SAPO-34 with wide temperature windows and stable structure are considered and applied as commercial catalysts for NO_(x)removal in diesel vehicles for a long time.Although molecular sieve catalysts possess many advantages,they still cannot avoid the serious deactivation caused by various factors in practical applications.In this review,reasons leading to the deactivation of molecular sieve catalysts for NO_(x)reduction in actual working conditions were concluded.The deactivation mechanisms of molecular sieve catalysts for NO_(x)reduction were analyzed and the corresponding anti-deactivation strategies were summarized.Finally,challenges and prospects of molecular sieve catalysts for NO_(x)reduction were also proposed. | Fuli Wang Penglu Wang Jin Zhang Dengchao Peng Mengmeng Wei Dengsong Zhang | 2024 | Chinese Chemical Letters2024，35，3： | 0 |
| 3 | Elucidating the electronic metal-support interaction enhanced hydrogen evolution activity on Ti_(3)C_(2)T_(x)MXene basal plane by scanning electrochemical microscopy显示文摘MXene,a family of two-dimensional(2D)transition metal carbides and nitrides,has intriguing electrochemical energy storage and electrocatalysis applications.Introducing the electronic metal-support interaction(EMSI)effect is one effective strategy to optimize the catalytic efficiency for MXene-based composites.However,most of the studies concentrate on optimizing the performance of metals rather than supported substrates by using this strategy.In this work,we mainly investigate the influence of an EMSI effect on the performance of the supported substrate(Ti_(3)C_(2)T_(x)MXene).Detailed scanning electrochemical microscopy and numerical simulations results reveal that the charge distribution on the Ti_(3)C_(2)T_(x)basal plane(approximate 100 nm-radius)surrounding Au nanoparticles(20 nm-radius)was significantly enhanced as a result of-O being the majority surface functional group on Ti_(3)C_(2)T_(x)that was attached to Au nanoparticle,and the related hydrogen evolution reaction(HER)activity was much better than that of the unaffected Ti_(3)C_(2)T_(x)basal plane,which even can be comparable to that of Au.This finding will be helpful for designing new strategies to enhance the overall catalytic performance of various MXene-based composites. | Sisi Jiang Tong Sun Chaoqun Gu Yingfei Ma Zhenyu Wang Dengchao Wang Zonghua Wang | 2023 | Nano Research2023，16，7： | 0 |
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