当前位置：
X-MOL 学术
›
Chem. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
High-performance potassium poly(heptazine imide) films for photoelectrochemical water splitting
Chemical Science ( IF 7.6 ) Pub Date : 2022-06-01 , DOI: 10.1039/d2sc02043b Xiaochun Li 1 , Xiaoxiao Chen 1 , Yuanxing Fang 1 , Wei Lin 1 , Yidong Hou 1 , Masakazu Anpo 1 , Xianzhi Fu 1 , Xinchen Wang 1
Chemical Science ( IF 7.6 ) Pub Date : 2022-06-01 , DOI: 10.1039/d2sc02043b Xiaochun Li 1 , Xiaoxiao Chen 1 , Yuanxing Fang 1 , Wei Lin 1 , Yidong Hou 1 , Masakazu Anpo 1 , Xianzhi Fu 1 , Xinchen Wang 1
Affiliation
|
Photoelectrochemical (PEC) water splitting is an appealing approach by which to convert solar energy into hydrogen fuel. Polymeric semiconductors have recently attracted intense interest of many scientists for PEC water splitting. The crystallinity of polymer films is regarded as the main factor that determines the conversion efficiency. Herein, potassium poly(heptazine) imide (K-PHI) films with improved crystallinity were in situ prepared on a conductive substrate as a photoanode for solar-driven water splitting. A remarkable photocurrent density of ca. 0.80 mA cm−2 was achieved under air mass 1.5 global illumination without the use of any sacrificial agent, a performance that is ca. 20 times higher than that of the photoanode in an amorphous state, and higher than those of other related polymeric photoanodes. The boosted performance can be attributed to improved charge transfer, which has been investigated using steady state and operando approaches. This work elucidates the pivotal importance of the crystallinity of conjugated polymer semiconductors for PEC water splitting and other advanced photocatalytic applications.
中文翻译：
用于光电化学分解水的高性能聚七嗪酰亚胺钾薄膜
光电化学（PEC）水分解是将太阳能转化为氢燃料的一种有吸引力的方法。聚合物半导体最近引起了许多科学家对 PEC 水分解的浓厚兴趣。聚合物薄膜的结晶度被认为是决定转换效率的主要因素。在此，在导电基板上原位制备了结晶度提高的聚（庚嗪）酰亚胺钾（K-PHI）薄膜作为太阳能驱动水分解的光电阳极。约显着的光电流密度。 0.80 mA cm -2是在空气质量1.5全局照明下实现的，无需使用任何牺牲剂，该性能约为。比非晶态光电阳极高20倍，并且比其他相关聚合物光电阳极高。性能的提升可归因于电荷转移的改善，这已使用稳态和操作方法进行了研究。这项工作阐明了共轭聚合物半导体的结晶度对于 PEC 水分解和其他先进光催化应用的关键重要性。
更新日期：2022-06-01
中文翻译：
用于光电化学分解水的高性能聚七嗪酰亚胺钾薄膜
光电化学（PEC）水分解是将太阳能转化为氢燃料的一种有吸引力的方法。聚合物半导体最近引起了许多科学家对 PEC 水分解的浓厚兴趣。聚合物薄膜的结晶度被认为是决定转换效率的主要因素。在此，在导电基板上原位制备了结晶度提高的聚（庚嗪）酰亚胺钾（K-PHI）薄膜作为太阳能驱动水分解的光电阳极。约显着的光电流密度。 0.80 mA cm -2是在空气质量1.5全局照明下实现的，无需使用任何牺牲剂，该性能约为。比非晶态光电阳极高20倍，并且比其他相关聚合物光电阳极高。性能的提升可归因于电荷转移的改善，这已使用稳态和操作方法进行了研究。这项工作阐明了共轭聚合物半导体的结晶度对于 PEC 水分解和其他先进光催化应用的关键重要性。
京公网安备 11010802027423号