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扫描电化学显微镜是一种扫描探针技术,利用微电极检测发生在固/液、液/液或者气/液界面反应物或者反应产物的连续变化。这里将对该技术原理进行详细说明。过去我们工作主要都集中在固定化酶的活性成像。最近研究的领域开始拓展到与能源转变相关材料上,如染料敏化太阳能电池和(生物)燃料电池的氧气催化还原。起初的尝试已经扩展到如何扩宽研究材料的范围和成像模式的应用范围。扫描电化学显微镜的反馈和产生-收集模式已被用于研究染料敏化太阳能电池半导体/电解质界面的光激发染料阳离子再生过程。现在开始关注更多的与太阳能的再生,燃料电池或染料敏化太阳能电池相关的复杂反应,这些复杂的反应包括外部质量传输过程、内部质量和电荷传输过程、多孔物质反应中心的本身活性等。
Scanning Electrochemical Microscopy is a scanning probe technology that uses microelectrodes to detect the continuous changes of reactants or reaction products that occur at a solid / liquid, liquid / liquid or gas / liquid interface. This technical principle will be described in detail here. In the past, our work has mainly focused on the active imaging of immobilized enzymes. Recent research areas have started to extend to materials related to energy conversion, such as oxygen catalytic reduction of dye-sensitized solar cells and (bio) fuel cells. Initial attempts have broadened to how to broaden the scope of research materials and the application of imaging modalities. Scanning Electrochemical Microscopy The feedback and generation-collection modes have been used to investigate the photo-excited dye cation regeneration process at the semiconductor / electrolyte interface of dye-sensitized solar cells. More attention now is paid to the complex reactions associated with solar cell regeneration, fuel cells, or dye-sensitized solar cells. These complex reactions include external mass transport processes, internal mass and charge transport processes, and the activity of porous reaction centers themselves.