Improvement in the Photobiological Hydrogen Production of Aggregated Chlorella by Dimethyl Sulfoxide
Improvement in the Photobiological Hydrogen Production of Aggregated Chlorella by Dimethyl Sulfoxide
复制标题
二甲亚砜聚集小球藻光生物产氢的改进
DOI：
10.1002/cbic.201700637
复制
发表时间：
2018-04-04
期刊：
影响因子：
3.2
通讯作者：
Tang, Ruikang
中科院分区：
文献类型：
--
作者：
Shu, Lei;Xiong, Wei;Tang, Ruikang
光生生物制氢因其能耗低、环境友好，在生产清洁可再生能源方面发挥着至关重要的作用。虽然材料诱导的小球藻聚集体已经被开发出来在正常的好氧条件下实现持续的光生物制氢，但产量相对较低，仅相当于光到H-2能量转换效率的0.42%。在此，我们报道了在水环境中只有0.5vol%的二甲基亚砜显著地提高了聚集小球藻产生H-2的产率，达到了光到H-2能量转换效率的0.69%。这种改善可以归因于二甲基亚砜提高了细胞呼吸速率，从而导致聚集体内的氧含量减少，最终激活了更多的氢酶。更广泛地说，这一策略包括通过使用小分子增强生物体-材料杂交体的功能。
Photobiological hydrogen production plays a vital role in generating clean renewable energy owing to its low energy consumption and environmental friendliness. Although materials-induced Chlorella aggregates have been developed to achieve sustained photobiological hydrogen production under normal aerobic conditions, the yield is relatively low and equals only 0.42% of the light-to-H-2 energy-conversion efficiency. Herein, we report that only 0.5vol% dimethyl sulfoxide in an aqueous environment significantly enhances the H-2 yield produced by aggregated Chlorella, reaching 0.69% of the light-to-H-2 energy-conversion efficiency. This improvement can be attributed to an increase in the cellular respiration rate by dimethyl sulfoxide, which results in a decrease in the oxygen content inside the aggregates and, ultimately, to the activation of more hydrogenases. More generally, this strategy consists of a functional enhancement in organism-material hybrids by using small molecules.