Polymer-supported graphene–TiO2 doped with nonmetallic elements with enhanced photocatalytic reaction under visible light

Wu, Yuanwang; Mu, Haiyan; Cao, Xuejun; He, Xiao

doi:10.1007/s10853-019-04100-8

Cited by 19 publications

(6 citation statements)

References 51 publications

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“…Figure 1c shows the projected density of states (PDOS) of pristine TiO 2 NT. The calculated band gap of the pristine TiO 2 NT is 3.257 eV, which is in a good agreement with the titania band gap of ∼3 eV reported elsewhere [39][40][41][42]. The VBM and CBM positions of the pristine TiO 2 NT meet the criteria for water splitting under ultraviolet (UV) irradiation.…”

Section: Computational Detailssupporting

confidence: 86%

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

et al. 2021

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On the basis of time-dependent density functional theory (TD-DFT) we performed first-principle calculations to predict optical properties and transition states of pristine, N- and S-doped, and N+S-codoped anatase TiO2 nanotubes of 1 nm-diameter. The host O atoms of the pristine TiO2 nanotube were substituted by N and S atoms to evaluate the influence of dopants on the photocatalytic properties of hollow titania nanostructures. The charge transition mechanism promoted by dopants positioned in the nanotube wall clearly demonstrates the constructive and destructive contributions to photoabsorption by means of calculated transition contribution maps. Based on the results of our calculations, we predict an increased visible-light-driven photoresponse in N- and S-doped and the N+S-codoped TiO2 nanotubes, enhancing the efficiency of hydrogen production in water-splitting applications.

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Section: Computational Detailssupporting

confidence: 86%

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

et al. 2021

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“…Conversely, GA-TiO 2 showed an absorption maximum at 280 nm of wavelength as a result of the interaction of the TiO 2 with the light. Even this GA has never been combined before with TiO 2 -type semiconductors, the GA-TiO 2 optical features resembled very similar to the typical graphene oxide–TiO 2 nanocomposites (and different from bare TiO 2 , see SI Figure S19), , highlighting the established electronic communication among both partners. In addition, the UV–vis emission spectrum in the 300–700 nm range for sample GA-TiO 2 displayed a maximum related to the CC bonds lying deep in the UV (315 nm), accompanied by a clear shoulder between 400 and 500 nm that is not observed in the pristine GA optical behavior.…”

Section: Resultsmentioning

confidence: 94%

A Graphene Acid - TiO₂ Nanohybrid as Multifunctional Heterogeneous Photocatalyst for the Synthesis of 1,3,4-Oxadiazoles

Sciarretta

Barawi

Navío

et al. 2022

ACS Appl. Mater. Interfaces

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The immobilization of TiO2 nanoparticles on graphene acid (GA), a conductive graphene derivative densely functionalized with COOH groups, is presented. The interaction between the carboxyl groups of the surface and the titanium precursor leads to a controlled TiO2 heterogenization on the nanosheet according to microscopic and spectroscopic characterizations. Electronic communication shared among graphene and semiconductor nanoparticles shifts the hybrid material optical features toward less energetic radiation but maintaining the conductivity. Therefore, GA-TiO2 is employed as heterogeneous photocatalyst for the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles using ketoacids and hydrazides as substrates. The material presented enhanced photoactivity compared to bare TiO2, being able to yield a large structural variety of oxadiazoles in reaction times as fast as 1 h with full recyclability and stability. The carbocatalytic character of GA is the responsible for the substrates condensation and the GA-TiO2 light interaction ability is able to photocatalyze the cyclization to the final 1,3,4-oxadiazoles, demonstrating the optimal performance of this multifunctional photocatalytic material.

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“…[10][11][12][13][14][15][16] The development of photocatalytic materials that are low-cost, highly efficient, and stable is still a research focus, despite extensive reports and studies on photocatalysts. [17][18][19][20][21][22][23][24][25][26][27] Metal sulfides are considered to be excellent photocatalysts due to the strong visible light absorption and sufficiently negative conduction band (CB). [28][29][30][31][32][33][34][35][36][37][38][39][40][41] Among them, CdIn 2 S 4 is a visible light-responsive catalyst with a bandgap of 2.2-2.6 eV, and is well-matched with the solar spectrum.…”

Section: Introductionmentioning

confidence: 99%

Construction of donor-mediator-receptor heterojunctions: Ni₁₂P₅/In(OH)₃/CdIn₂S₄ ternary catalyst for photocatalytic hydrogen production

Yang

Niu

et al. 2023

New J. Chem.

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Polymer-supported graphene–TiO2 doped with nonmetallic elements with enhanced photocatalytic reaction under visible light

Cited by 19 publications

References 51 publications

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

A Graphene Acid - TiO₂ Nanohybrid as Multifunctional Heterogeneous Photocatalyst for the Synthesis of 1,3,4-Oxadiazoles

Construction of donor-mediator-receptor heterojunctions: Ni₁₂P₅/In(OH)₃/CdIn₂S₄ ternary catalyst for photocatalytic hydrogen production

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Polymer-supported graphene–TiO2 doped with nonmetallic elements with enhanced photocatalytic reaction under visible light

Cited by 19 publications

References 51 publications

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

Time-Dependent Density Functional Theory Calculations of N- and S-Doped TiO2 Nanotube for Water-Splitting Applications

A Graphene Acid - TiO2 Nanohybrid as Multifunctional Heterogeneous Photocatalyst for the Synthesis of 1,3,4-Oxadiazoles

Construction of donor-mediator-receptor heterojunctions: Ni12P5/In(OH)3/CdIn2S4 ternary catalyst for photocatalytic hydrogen production

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A Graphene Acid - TiO₂ Nanohybrid as Multifunctional Heterogeneous Photocatalyst for the Synthesis of 1,3,4-Oxadiazoles

Construction of donor-mediator-receptor heterojunctions: Ni₁₂P₅/In(OH)₃/CdIn₂S₄ ternary catalyst for photocatalytic hydrogen production