Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications , Henan University , Kaifeng 475004 , China.
Department of Chemical and Biological Engineering, Albuquerque , University of New Mexico , Albuquerque , New Mexico 87106 , United States.
Nano Lett. 2019 Apr 10;19(4):2614-2619. doi: 10.1021/acs.nanolett.9b00423. Epub 2019 Mar 12.
Design and engineering of highly efficient light-harvesting nanomaterial systems to emulate natural photosynthesis for maximizing energy conversion have stimulated extensive efforts. Here we present a new class of photoactive semiconductor nanocrystals that exhibit high-efficiency energy transfer for enhanced photocatalytic hydrogen production under visible light. These nanocrystals are formed through noncovalent self-assembly of In(III) meso-tetraphenylporphine chloride (InTPP) during microemulsion assisted nucleation and growth process. Through kinetic control, a series of uniform nanorods with controlled aspect ratio and high crystallinity have been fabricated. Self-assembly of InTPP porphyrins results in extensive optical coupling and broader coverage of the visible spectrum for efficient light harvesting. As a result, these nanocrystals display excellent photocatalytic hydrogen production and photostability under the visible light in comparison with the commercial InTPP porphyrin powders.
设计和工程高效的光收集纳米材料系统，以模拟自然光合作用，最大限度地提高能量转换，已经激发了广泛的努力。在这里，我们提出了一类新的光活性半导体纳米晶体，它们在可见光下表现出高效的能量转移，从而提高光催化制氢的效率。这些纳米晶体是通过在微乳液辅助成核和生长过程中，通过 In(III) 间四苯基卟啉氯化物（InTPP）的非共价自组装形成的。通过动力学控制，制备了一系列具有可控纵横比和高结晶度的均匀纳米棒。InTPP 卟啉的自组装导致广泛的光学耦合和更广泛的可见光覆盖范围，从而实现高效的光捕获。因此，与商业 InTPP 卟啉粉末相比，这些纳米晶体在可见光下表现出优异的光催化制氢和光稳定性。
