Facile green synthesis of crystalline polyimide photocatalyst for hydrogen generation from water

Chu, Sheng Yuan; Wang, Ying; Guo, Yong; Zhou, Peng; He, Yu; Luo, Leilei; Kong, Fei; Zou, Zhigang

doi:10.1039/c2jm32595k

Cited by 145 publications

(133 citation statements)

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“…Thed ecreased optical band gaps of the polymers were mainly ascribed to the enhanced condensation of the conjugated system and is advantageous for the capture of visible photons for the generation of charge carriers for proton reduction. [29]. However,n early no gas evolution was observed when the sample was excited by using visible light.…”

Section: Imine-linked Conjugated Poly(azomethine) Networkmentioning

confidence: 98%

“…By mixing MA with pyromellitic dianhydride (PMDA) through ad ehydration reaction at ah igh condensation temperature,Z ou and co-workers developed ac rystalline polyimide (PI) photocatalyst, [29] which showed activities for photocatalytic H 2 evolution under visible-light irradiation (Figure 7). It is fascinating to observe that the optical gap of the synthesized PI organic semiconductor decreases from 3.39 eV to 2.56 eV when the reaction temperature is increased from 250 to 350 8 8C.…”

Section: Polyimide-based Polymersmentioning

confidence: 99%

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Conjugated Polymers: Catalysts for Photocatalytic Hydrogen Evolution

2016

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Conjugated polymers, comprising fully π-conjugated systems, present a new generation of heterogeneous photocatalysts for solar-energy utilization. They have three key features, namely robustness, nontoxicity, and visible-light activity, for photocatalytic processes, thus making them appealing candidates for scale-up. Presented in this Minireview, is a brief summary on the recent development of various promising polymer photocatalysts for hydrogen evolution from aqueous solutions, including linear polymers, planarized polymers, triazine/heptazine polymers, and other related organic conjugated semiconductors, with a particular focus on the rational manipulation in the composition, architectures, and optical and electronic properties that are relevant to photophysical and photochemical properties. Some future trends and prospects for organic conjugated photocatalysts in artificial photosynthesis, by water splitting, are also envisaged.

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Section: Imine-linked Conjugated Poly(azomethine) Networkmentioning

confidence: 98%

Section: Polyimide-based Polymersmentioning

confidence: 99%

Conjugated Polymers: Catalysts for Photocatalytic Hydrogen Evolution

2016

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“…The most well-known of these photocatalysts are the inorganic solids [1][2][3]6], mostly oxides but also sulfides and selenides, the former including titanium dioxide [13][14][15], the quintessential photocatalyst. Perhaps less well-known, a range of supramolecular systems [16,17] and even organic polymers [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] have also been reported to act as photocatalysts. In this mini-review we will discuss computational work on modelling such photocatalysts in terms of the relevant material properties and processes, as well as what we believe to be key aspects to consider when performing such calculations.…”

Section: Which States That Photocatalysis Is the 'Change In The Rate mentioning

confidence: 99%

Modelling materials for solar fuel synthesis by artificial photosynthesis; predicting the optical, electronic and redox properties of photocatalysts

Guiglion

Berardo

Butchosa

et al. 2016

J. Phys.: Condens. Matter

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In this mini-review, we discuss what insight computational modelling can provide into the working of photocatalysts for solar fuel synthesis and how calculations can be used to screen for new promising materials for photocatalytic water splitting and carbon dioxide reduction. We will extensively discuss the different relevant (material) properties and the computational approaches (DFT, TD-DFT, GW/BSE) available to model them. We illustrate this with examples from the literature, focussing on polymeric and nanoparticle photocatalysts. We finish with a perspective on the outstanding conceptual and computational challenges.

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“…3 A few other metal-free photocatalysts are reported: such as C 3 N 3 S 3 , 4 Boron Carbides, 5 elemental α-sulfur, 6 b-Rhombohedral Boron 7 and red phosphorus, 8 carbon materials based poly(p-phenylenes), 9 P-doped graphene, 10 nanoporous carbon 11 and polyimide . 12 Very recently, a one-dimensional conducting poly(diphenylbutadiyne) photocatalyst and a band-gap tunable organic polymer photocatalyst were reported for the visible light photocatalysis. 13,14 Phenolic resins synthesized from poly-condensation of phenols and formaldehydes are already used in large quantities for many industrial applications, and also are widely used for preparing a variety of nanostructured carbons, which have attracted interest for potential applications as adsorbents, battery electrodes, supercapacitors, drug delivery carriers, as well as supports for catalysts.…”

mentioning

confidence: 99%