Affiliation:
1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
2. CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience Department of Chemistry and International Institute of Nanotechnology National Center for Nanoscience and Technology (NCNST) No. 11 Beiyitiao, Zhongguancun Beijing 100190 China
3. Fujian Provincial Key Laboratory of Polymer Materials College of Chemistry and Materials Science Fujian Normal University Fuzhou 350007 China
Abstract
AbstractDetecting CO2 in complex gas mixtures is challenging due to the presence of competitive gases in the ambient atmosphere. Photoelectrochemical (PEC) techniques offer a solution, but material selection and specificity remain limiting. Here, we constructed a hydrogen‐bonded organic framework material based on a porphyrin tecton decorated with diaminotriazine (DAT) moieties. The DAT moieties on the porphyrin molecules not only facilitate the formation of complementary hydrogen bonds between the tectons but also function as recognition sites in the resulting porous HOF materials for the selective adsorption of CO2. In addition, the in‐plane growth of FDU‐HOF‐2 into anisotropic molecular sheets with large areas of up to 23000 μm2 and controllable thickness between 0.298 and 2.407 μm were realized in yields of over 89 % by a simple solution‐processing method. The FDU‐HOF‐2 can be directly grown and deposited onto different substrates including silica, carbon, and metal oxides by self‐assembly in situ in formic acid. As a proof of concept, a screen‐printing electrode deposited with FDU‐HOF‐2 was fabricate as a label‐free photoelectrochemical (PEC) sensor for CO2 detection. Such a signal‐off PEC sensor exhibits low detection limit for CO2 (2.3 ppm), reusability (at least 30 cycles), and long‐term working stability (at least 30 days).
Funder
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
Subject
General Chemistry,Catalysis
Cited by
3 articles.
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