High-performance microfluidic electrochemical reactor for efficient hydrogen evolution

As a promising technology, microreactors have been regarded as a potential candidate for heterogeneous catalytic reactions as they inherently allow the superior advantages of precise flow control, efficient reactant transfer, flexible operation, etc. However, the wide market penetration of microreactors is still facing severe challenges. One of the most important reasons is the preparation of a high–performance catalytic layer in the microreactor because it can directly influence the catalytic activity and stability the reactor and thus the deployment the microreactor technology. Hence, significant progress in depositing nanocatalysts in microreactors has been made in the past decades. Herein, the methods, principles, recent advances, and challenges in the preparation of the catalyst layer in microreactors were presented. A general description of the physicochemical processes of heterogeneous catalytic reactions in microreactors were first introduced. Then, recent advances in catalyst layer preparation in microreactors were systematically summarized. Particular attention was focused on the most common sol–gel method and its latest developments. Some new strategies proposed recently, including bio–inspired electroless deposition and layer–by–layer self–assembly, were also comprehensively discussed. The remaining challenges and future directions of preparing the catalytic layer in microreactors with high performance and low cost were highlighted.

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“…Both these two aspects can play significant roles in influencing the kinetic reaction rate, the reaction path, the stability, etc. [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Towards Heterogeneous Catalysis: A Review on Recent Advances of Depositing Nanocatalysts in Continuous–Flow Microreactors

et al. 2022

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Influence of Complex Multiphasic Flow on the Thiuram Electrosynthesis in a Microchannel Reactor

Zheng,

Wang

2024

ChemSusChem

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As an important sustainable method for chemical synthesis, organic electrosynthesis experienced a renaissance in recent years for its excellent atom economy. Although microchannel reactors have been proposed to advanced electrosynthesis devices to obtain low energy cost and high reaction performance, the complex multiphasic flow in the electrochemical microchannels are very less reported and the effects of flow condition on the electrosynthesis reaction are less reported. Taking the electrosynthesis of tetraethyl thiuram disulfide (TETD) as a typical case, we developed a visualized electrochemical microchannel reactor equipped with fluorine‐doped tin oxide (FTO) loaded glass electrode to investigate the gas‐liquid‐liquid triple phase flow pattern and the main factors influenced the response current at certain applied cell voltage. The gas‐liquid‐liquid hybrid flow with low gas hold‐up and high liquid flow rate was found crucial for preventing coverage of TETD on the electrode, which provided 23.1% low current attenuation ratio at 3.0 V cell voltage. The research not only exhibited the complex evolution mechanism of the response current, but also showed the importance of flow condition control for balancing the work efficiency and energy consumption of electrosynthesis process.

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Microfluidic Flow Cells for Energy Conversion and Utilization

Feng

Zhang

Liu

et al. 2023

Green Energy and Technology

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High-performance microfluidic electrochemical reactor for efficient hydrogen evolution

Cited by 13 publications

References 50 publications

Towards Heterogeneous Catalysis: A Review on Recent Advances of Depositing Nanocatalysts in Continuous–Flow Microreactors

Towards Heterogeneous Catalysis: A Review on Recent Advances of Depositing Nanocatalysts in Continuous–Flow Microreactors

Influence of Complex Multiphasic Flow on the Thiuram Electrosynthesis in a Microchannel Reactor

Microfluidic Flow Cells for Energy Conversion and Utilization

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