Numerous defects induced by exfoliation of boron-doped g-C3N4 towards active sites modulation for highly efficient solar-to-fuel conversion

Hussien, Mahmoud Kamal; Sabbah, Amr; Qorbani, Mohammad; Elsayed, Mohamed Hammad; Quadir, Shaham; Raghunath, P.; Tzou, Der‐Lii M.; Chou, Ho‐Hsiu; Thǎńg, Nguyêñ Quôć; Lin, Ming‐Chang; Chen, Li‐Chyong; Chen, Kuei‐Hsien

doi:10.1016/j.mtsust.2023.100359

Cited by 10 publications

(4 citation statements)

References 78 publications

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“…The BET specific surface area of CNN and BCNT-2 was found to be 82.13 and 79.11 m 2 g –1 , respectively; their corresponding cumulative pore volume was 0.61 and 0.48 cm 3 g –1 , respectively. Generally, the larger the specific area of a material, the higher the photocatalytic activity; , however, the difference in the specific surface area and pore volume of CNN and BCNT-2 was relatively small. Therefore, the photocatalytic activity of the catalyst prepared in this study was not completely dominated by the two factors mentioned.…”

Section: Resultsmentioning

confidence: 99%

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

Zhang,

An,

Zhang

et al. 2024

Langmuir

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The photocatalytic activity of g-C 3 N 4 can be enhanced by improving photoinduced carrier separation and exposing sufficient reactive sites. In this study, we synthesized B-doped porous tubular g-C 3 N 4 (BCNT) using a H 3 BO 3 -assisted supramolecular self-template method, wherein H 3 BO 3 helped in B-doping, building a porous structure, and maintaining one-dimensional nanotubes. The tubular structure had an ultrathin tube wall and large aspect ratio, which are conducive to the directional transmission and separation of photogenerated carriers; moreover, the abundant pore structure of the tube wall could fully expose the reactive sites. The introduction of B and the cyano group modulated the bandgap of g-C 3 N 4 and elevated the position of the conduction band, thus enhancing the photoreduction ability and effectively improving the hydrogen evolution performance. Consequently, the hydrogen evolution of 53.2 μmol•h −1 ) was 1.82 and 1.54 times that of ultrathin g-C 3 N 4 nanosheets (CNN, 121.3,34.6 μmol•h −1 ) under simulated sunlight and LED lamp irradiation, respectively. Thus, this work provides in-depth insights into the rational design of one-dimensional g-C 3 N 4 nanotubes with high hydrogen evolution activity under visible irradiation.

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Section: Resultsmentioning

confidence: 99%

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

Zhang,

An,

Zhang

et al. 2024

Langmuir

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“…68,69 The nitrogen atom bonded to a boron atom was also found to be an active site for CO 2 adsorption. 70…”

Section: Resultsmentioning

confidence: 99%

A boron nitride–carbon composite derived from ammonia borane and ZIF-8 with promises for the adsorption of carbon dioxide

Castilla-Martinez,

Charmette,

Cartier

et al. 2024

New J. Chem.

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“…Metal cocatalysts can progressively extend the lifetimes of electrons and holes . Hydrogen can be produced on a variety of photocatalysts like CdS, TiO 2 , ZnO, ZnS, g–C 3 N 4 , WO 3 , SrTiO 3 , Zn 3 V 2 O 8 , BiVO 4 , CuFe 2 O 4 , CrVO 4 , FeVO 4 , CeVO 4 , Pd@Ti 3 C 2 T x -TiO 2, and AgVO 4 …”

Section: Introductionmentioning

confidence: 99%

Tuning of TiO₂/CdS Hybrid Semiconductor with Au Cocatalysts: State-of-the-Art Design for Sunlight-Driven H₂ Generation from Water Splitting

Rafiq,

Sabir,

Abid

et al. 2024

Energy Fuels

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In developing countries, there is a critical situation of pollution as well as shortage of energy. The aim of this project was to design a sustainable approach that can generate pollutionfree energy (hydrogen) from a renewable source. For this purpose, Au@TiO 2 /CdS hybrid catalysts have been synthesized in a hydrothermal reactor at 180 °C. The morphology and optical characteristics of the catalysts were carried out using FT−IR, XRD, Raman, UV−Vis−DRS, SEM, EDX, AFM, and XPS techniques. All photoreactions were done in sunlight, whereas hydrogen generation experiments were monitored using GC−TCD (Shimadzu−2010/Japan). Overall, Au@TiO 2 /CdS was found to be the most active catalyst that delivers 19.15 mmol g −1 h −1 of hydrogen under sunlight. Tuning of TiO 2 /CdS catalysts with Au enhances the surface plasmon impact and generates more photo-induced charges. The results depict that the Au@TiO 2 /CdS system becomes more effective to cope with SPR electrons to drag redox reactions at active centers. Due to SPR effect, AuNPs progressively generate higher electron density on the surface of TiO 2 /CdS, specifically when it works on sunlight. Various factors like pH, temperature, catalyst dosage, reactor volume, intensity of light, and sacrificial agents have been evaluated. The results concluded that sustainable hydrogen can be achieved via tuning of AuNPs on a hybrid semiconductor system. Although there are many challenges ahead, this study holds promise for an eventual transition to replace conventional sources of energy.

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Numerous defects induced by exfoliation of boron-doped g-C3N4 towards active sites modulation for highly efficient solar-to-fuel conversion

Cited by 10 publications

References 78 publications

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

A boron nitride–carbon composite derived from ammonia borane and ZIF-8 with promises for the adsorption of carbon dioxide

Tuning of TiO₂/CdS Hybrid Semiconductor with Au Cocatalysts: State-of-the-Art Design for Sunlight-Driven H₂ Generation from Water Splitting

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Numerous defects induced by exfoliation of boron-doped g-C3N4 towards active sites modulation for highly efficient solar-to-fuel conversion

Cited by 10 publications

References 78 publications

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution

A boron nitride–carbon composite derived from ammonia borane and ZIF-8 with promises for the adsorption of carbon dioxide

Tuning of TiO2/CdS Hybrid Semiconductor with Au Cocatalysts: State-of-the-Art Design for Sunlight-Driven H2 Generation from Water Splitting

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Tuning of TiO₂/CdS Hybrid Semiconductor with Au Cocatalysts: State-of-the-Art Design for Sunlight-Driven H₂ Generation from Water Splitting