2017
DOI: 10.1039/c7ta00580f
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The role of dissolution in the synthesis of high-activity organic nanocatalysts in a wet chemical reaction

Abstract: By combining nucleation/growth with dissolution of nanocrystals in a simple wet chemical reaction without capping agent under ambient conditions, a high-activity organic nano-photocatalyst (ZnTPP·H2O) was synthesized by simply adjusting the reaction time.

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Cited by 8 publications
(21 citation statements)
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“…Nevertheless, the direct utilization in energy conversion field as photocatalysts seems to Fig. 11 (a) be rare compared with inorganic semiconductors in the past five years 266,267 , and the novel organics, e.g., zeolitic imidazolate frameworks (ZIFs), covalent triazine-based frameworks (CTFs), azine covalent organic framework (ACOF), polymeric porphyrin and polyphthalocyanine also have large development space. On the other hand, compared to photocatalytic water splitting, there are fewer reports on CO2 reduction, N2 fixation and other application using pure organic polymer semiconductors, most likely due to the inherent higher requirements of kinetic and energetic challenges in CO2 reduction and N2 fixation reactions.…”
Section: N2 Photofixationmentioning
confidence: 99%
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“…Nevertheless, the direct utilization in energy conversion field as photocatalysts seems to Fig. 11 (a) be rare compared with inorganic semiconductors in the past five years 266,267 , and the novel organics, e.g., zeolitic imidazolate frameworks (ZIFs), covalent triazine-based frameworks (CTFs), azine covalent organic framework (ACOF), polymeric porphyrin and polyphthalocyanine also have large development space. On the other hand, compared to photocatalytic water splitting, there are fewer reports on CO2 reduction, N2 fixation and other application using pure organic polymer semiconductors, most likely due to the inherent higher requirements of kinetic and energetic challenges in CO2 reduction and N2 fixation reactions.…”
Section: N2 Photofixationmentioning
confidence: 99%
“…Light absorption, charge separation/transfer and surface chemical reactions determine the overall efficiency of photocatalytic systems [253][254][255][256][257][258][259][260][261][262][263][264][265][266][267][268][269][270] , and the surface redox reactions can be optimized by cocatalyst loading and other surface modification approach [271][272][273][274][275][276][277][278][279][280][281] .…”
Section: Surface Chemical Modificationmentioning
confidence: 99%
“…Organic dyes with a large π-conjugated scaffold and tailorable photoelectric properties are important aspects of semiconductor materials. They are often used in field-effect transistors, light–emitting displays, or solar cells. Nevertheless, the direct use of organic dye nanomaterials as photocatalysts seems to be neglected in the past few decades. …”
Section: Introductionmentioning
confidence: 99%
“…Metal porphyrin (MTPP), a kind of typical p-type organic semiconductor or dye with a stable conjugated structure, possesses a wide absorption of visible light from the porphyrin ring and metal–ligand charge transfer (MLCT), more positive lowest unoccupied molecular orbital (LUMO) than hydrogen (vs Vac. ), and long lifetime of triplet excitons. ,, Theoretically, they can be used as not only good photosensitizers but also as direct nanocatalysts for PHE via controlling the size- and shape-dependent photoelectric properties. ,,, In these ONCs, the generation of J- or H-aggregates after the self-assembly of molecules is intrinsically favorable for photocatalysis due to the wider light absorption, longer exciton lifetime of dimers and intermolecular charge transfer (CT) state, and better hydrophilic ability, as compared to single molecules. Moreover, it has been widely proven that the catalytic active site of MTPP is usually situated in the central metal atom of the large conjugated ring. Therefore, the key step for improving photochemical reactions on the surface of MTPP is adequate exposure of the hydrophilic active face of ONCs parallel to the conjugate ring via the controllable self-assembly of molecules, similar to the crystal engineering of TiO 2 . , However, the corresponding active crystal face usually has high surface energy and thus easily disappears during the kinetic and thermodynamic growth of ONCs.…”
Section: Introductionmentioning
confidence: 99%
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