Title: Morphology-Controlled Synthesis and Metalation of Porphyrin Nanoparticles with Enhanced Photocatalytic Performance

Abstract

The design and engineering of the size, shape, and chemistry of photoactive building blocks enables the fabrication of functional nanoparticles for applications in light harvesting, photocatalytic synthesis, water splitting, phototherapy, and photodegradation. Here, we report the synthesis of such nanoparticles through a surfactant-assisted interfacial self-assembly process using optically active porphyrin as a functional building block. The self-assembly process relies on specific interactions such as π–π stacking and metalation (metal atoms and ligand coordination) between individual porphyrin building blocks. Depending on the kinetic conditions and type of surfactants, resulting structures exhibit well-defined one- to three-dimensional morphologies such as nanowires, nanooctahedra, and hierarchically ordered internal architectures. Specifically, electron microscopy and X-ray diffraction results indicate that these nanoparticles exhibit stable single-crystalline and nanoporous frameworks. In conclusion, due to the hierarchical ordering of the porphyrins, the nanoparticles exhibit collective optical properties resulted from coupling of molecular porphyrins and photocatalytic activities such as photodegradation of methyl orange (MO) pollutants and hydrogen production.

Authors:

Wang, Jiefei ^[1]; Zhong, Yong ^[1]; Wang, Liang ^[1]; Zhang, Na ^[1]; Cao, Ronghui ^[1]; Bian, Kaifu ^[2]; Alarid, Leanne Julia ^[3]; Haddad, Raid E. ^[3]; Bai, Feng ^[4]; Fan, Hongyou ^[5]

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+ Show Author Affiliations

1. Henan Univ., Kaifeng (People's Republic of China); Henan Univ., Kaifeng (China)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. The Univ. of New Mexico/NSF Center for Micro-Engineered Materials, Albuquerque, NM (United States)
4. Henan Univ., Kaifeng (People's Republic of China); Henan Univ., Kaifeng (China); The Univ. of New Mexico/NSF Center for Micro-Engineered Materials, Albuquerque, NM (United States)
5. The Univ. of New Mexico/NSF Center for Micro-Engineered Materials, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:

Mon Sep 12 00:00:00 EDT 2016

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1399560

Report Number(s):

SAND-2017-8084J
Journal ID: ISSN 1530-6984; 655782

Grant/Contract Number:  

AC04-94AL85000

Resource Type:

Accepted Manuscript

Journal Name:

Nano Letters

Additional Journal Information:

Journal Volume: 16; Journal Issue: 10; Journal ID: ISSN 1530-6984

Publisher:

American Chemical Society

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; metalation; nanocrystals; photocatalysis; Porphyrin; self-assembly