报告摘要：

Nano-bacteria hybrid material is a new class of interdisciplinary material which couples the advantages of nanomaterials (controlled synthesis, high surface area, unique and tunable physicochemical properties, and etc.) and microbial catalysts (high catalytic specificity and selectivity, self-repair and self-replicate, ease for genome engineering). Nano-bacteria hybrid materials hold great promise in various research fields including artificial photosynthesis and microbial fuel cell, however, questions still remain: 1) the sample inhomogeneity of nanomaterials and its impact on device performance; 2) understanding and optimization of nano-bacteria interface. To answer these questions, we first fabricated a single-nanowire-photoelectrode device, and demonstrated that the photovoltage of nanowire array is limited by individual nanowires within the array. Such result highlights the importance to control and improve the nanoscopic sample homogeneity in ensemble nanodevices. By employing electrochemical methods and in-situ bacteria encapsulation approach, we optimized the nano-bacteria interface for microbial CO₂ fixation and microbial fuel cell applications, respectively. As a result, we achieved 1) 3.6% solar-to-acetate efficiency in one week for microbial CO₂ fixation and 2) 150 folds increase in bio-current generation for microbial fuel cell. In addition, we demonstrated the intelligence of a nano-bacteria composite which can switch its function between microbial fuel cell mode and supercapacitor energy storage mode.

报告人简介：

苏育德，2012年在中国科学技术大学取得学士学位，2017年在美国加州大学伯克利分校取得博士学位，导师杨培东院士。博士毕业后，分别在加州大学伯克利分校、加州大学圣芭芭拉分校、新加坡国立大学从事博士后研究。2021年加入中国科学技术大学苏州高等研究院。苏育德博士致力于纳米材料和微生物-纳米复合材料的设计与制备及其在能源与催化等领域的应用。近5年之内，以第一作者或通讯作者在 Nature Nanotechnology, Joule, Advanced Functional Materials, ACS Applied Materials & Interfaces上发表论文；并以共同作者在Nature Materials, Chemical Reviews, Advanced Materials, Proceedings of the National Academy of Sciences USA, Nano Letters 等期刊发表论文。