Mesostructured CeO2/g-C3N4 nanocomposites: Remarkably enhanced photocatalytic activity for CO2 reduction by mutual component activations

Li, Mengli; Zhang, Lingxia; Wu, Meiying; Du, Yonghua; Fan, Xinghua; Wang, Min; Zhang, Linlin; Kong, Qinglu; Shi, Jianlin

doi:10.1016/j.nanoen.2015.11.010

Cited by 354 publications

(133 citation statements)

References 57 publications

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“…On the other hand, cerium oxide (CeO 2 )a sa na ctive metal oxide has the advantages of nontoxicity,h igh stability,a nd sufficiently positive valence band (VB), ensuring the strong oxidation ability of photoexcited holes for the production of hydroxyl radicals. [5] However,s ingle visible-light active semiconductors (including PCN and CeO 2 )h ave high recombination rate of photogenerated charge carriers,a nd cannot promise both strong oxidation ability of holes and meanwhile strong reduction ability of electrons because of the limitation of the band structure. [6] It is still challenging to obtain an efficient photocatalytic system with the merits of visible-light response,effective charge separation, and strong redox ability simultaneously.T herefore,c onstructing suitable heterojunction system can be regarded as one of the most promising approaches to address such challenges.…”

Section: Introductionmentioning

confidence: 99%

Designing a 0D/2D S‐Scheme Heterojunction over Polymeric Carbon Nitride for Visible‐Light Photocatalytic Inactivation of Bacteria

et al. 2020

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Constructing heterojunctions between two semiconductors with matched band structure is an effective strategy to acquire high‐efficiency photocatalysts. The S‐scheme heterojunction system has shown great potential in facilitating separation and transfer of photogenerated carriers, as well as acquiring strong photoredox ability. Herein, a 0D/2D S‐Scheme heterojunction material involving CeO2 quantum dots and polymeric carbon nitride (CeO2/PCN) is designed and constructed by in situ wet chemistry with subsequent heat treatment. This S‐scheme heterojunction material shows high‐efficiency photocatalytic sterilization rate (88.1 %) towards Staphylococcus aureus (S. aureus) under visible‐light irradiation (λ≥420 nm), which is 2.7 and 8.2 times that of pure CeO2 (32.2 %) and PCN (10.7 %), respectively. Strong evidence of S‐scheme charge transfer path is verified by theoretical calculations, in situ irradiated X‐ray photoelectron spectroscopy, and electron paramagnetic resonance.

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Section: Introductionmentioning

confidence: 99%

Designing a 0D/2D S‐Scheme Heterojunction over Polymeric Carbon Nitride for Visible‐Light Photocatalytic Inactivation of Bacteria

et al. 2020

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“…[20] Many studies reported that carbon template went through chemical activation (most are KOH) and after with high micropores content might show higher electrochemical performance. [21] This may further made clear the reason that KPAC-900 with extremely low N,Ocodoped carbon content also outperformed KPAC-600 with high nitrogen content.…”

Section: Resultsmentioning

confidence: 88%

N,O‐Codoped Hierarchically Porous Carbons Derived from Squid Pen for High‐Capacity Supercapacitors

Yin

Fan

et al. 2018

ChemistrySelect

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Fabrication of multi‐heteroatom doped hierarchically porous carbon with a facile and environment procedure has been well investigated for supercapacitor industry. We put forward a time‐saving and environmentally friendly method for the manufacture of N,O‐codoped carbons by using direct carbonization of biomass squid pens. Under our facile procedure, the raw carbon materials have been transformed into hierarchical porous carbons, combined with high specific area surface (2540 cm2⋅g−1), micro/meso/macropore inside, and rich N (1.01‐7.44%) and O (17.00‐18.88%) content. It is a completely novel and green avenue for constructing hierarchical porous carbon materials from biomass, showing large commercial potential. Supercapacitors made from the resulting material possess very high specific capacitance (the highest up to 581 F⋅g−1), twice as much as commercial activated carbon (100‐250 F⋅g−1). In particular, it retains 336.6 F⋅g−1 of specific capacitance at a high current density of 10 A⋅g−1, which is a promising material for devices that require operation at high current densities. In addition, it also has a high cyclic stability (maintaining 90% capacitance after 10,000 cycle) and lower impedance. We believe that the hierarchically porous N,O‐codoped carbons derived from squid pens could be an ideal candidate for the energy storage and conversion devices.

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“…For example, Chen et al reported that the pyrolysis of elm samaras after treated with a KOH aqueous solution based on a mass ration of 1:1 resulted in the formation of threedimensional scaffolding frameworks of highly porous carbon nanosheets with a thickness down to 1-2 nm 66 . An interconnected porous carbon nanosheets was obtained as willow catkin was employed as biomass feedstock in the same preparation method 67 . It was believed that willow catkin with a unique hollow and multilayered structure could readily interact with KOH which was favorable for CNMs synthesis.…”

Section: Thermo-chemical Activationmentioning

confidence: 99%

State-of-the-art on the production and application of carbon nanomaterials from biomass

et al. 2018

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Mesostructured CeO2/g-C3N4 nanocomposites: Remarkably enhanced photocatalytic activity for CO2 reduction by mutual component activations

Cited by 354 publications

References 57 publications

Designing a 0D/2D S‐Scheme Heterojunction over Polymeric Carbon Nitride for Visible‐Light Photocatalytic Inactivation of Bacteria

Designing a 0D/2D S‐Scheme Heterojunction over Polymeric Carbon Nitride for Visible‐Light Photocatalytic Inactivation of Bacteria

N,O‐Codoped Hierarchically Porous Carbons Derived from Squid Pen for High‐Capacity Supercapacitors

State-of-the-art on the production and application of carbon nanomaterials from biomass

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