Pd–Ag decorated g-C<sub>3</sub>N<sub>4</sub>as an efficient photocatalyst for hydrogen production from water under direct solar light irradiation

Majeed, Imran; Manzoor, Uzma; Kanodarwala, Fehmida K.; Nadeem, Muhammad Arif; Hussain, Ejaz; Ali, Hassan; Badshah, Amin; Stride, John A.

doi:10.1039/c7cy02219k

Cited by 121 publications

(53 citation statements)

References 68 publications

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“…In this way, g‐C 3 N 4 is a two‐dimensional metal‐free conjugated crystalline sheet material with a bandgap energy of 2.7 eV, which has concerned intense research interest due to its environmental friendly feature, appealing electronic structure, low‐cost excellent chemical and thermal stability . The conduction band and valence band edges of g‐C 3 N 4 , exist ∼ −1.12 and +1.6 eV, making it active under visible light as an efficient photocatalyst . Xiaoya Yuan et.al.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

et al. 2019

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Herein, we report the preparation and visible light-triggered photocatalytic investigation of nitrogen-rich graphitic carbon nitride (g-C 3 N 4 ) nanosheets intercalated ZnO\MgÀ Al LDH (2D \2D) ternary nanocomposite. The ZnO nanoparticles, unique structured LDH, and g-C 3 N 4 are intercalated well by the hydrothermal treatment, showing a significant enhancement in the visible light absorption and corresponding photocatalytic activity. Formation of this new ternary nanocomposite was examined by using XRD, FE-SEM, TEM, FTIR, EDX, Elemental mapping, XPS and UV-Vis analysis. The ternary nanocomposite photocatalyst show remarkable performance towards the photodegradation of Methylene Blue (MB) dye. The ternary nanocomposite exhibited considerable improvement in the photocatalytic activity and is attributed to the N-rich g-C 3 N 4 and even distribution of ZnO\MgÀ Al LDH over the g-C 3 N 4 surface. This work offers a facile approach to prepare a novel visible light-response photocatalyst for photocatalytic dye degradation of organic pollutants.

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Section: Introductionmentioning

confidence: 99%

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

et al. 2019

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“…[38] For the Ag/CN sample, there were no clear diffraction peaks of Ag, and on the Pd/CN sample, ap eak at 41.28 waso bserveda nd indexed as the Pd 0 (111)p lane. [28] However,n od iffraction peaks ascribed to Ag and Pd species were obtained on AgPd/CN, which may be attributed to the low loading content of Pd on the AgPd/CN sample.…”

Section: Resultsmentioning

confidence: 96%

“…Various bimetallic alloy nanoparticles have been reported,s uch as AuPd, [25,26] AgPd, [27,28] FePd, [29] AgCu, [30] PtNi, [31] and so forth. They exhibit better photocatalytic activities than monometallic catalysts, and possible factorsint he activity enhancement have been investigated.M ajeed et al [28] considered that there is a" synergism effect" between Pd and Ag atoms, that is, Pd can quench photogenerated electrons through the Schottky barrier formation mechanism,a nd the characteristic SPR property of Ag enhances visible light absorption, resulting in theb etter activity of the Pd-Ag/g-C 3 N 4 photocatalyst. Zhu et al [30] suggested that there is as tronger metalsupport interaction in Ag-Cu/g-C 3 N 4 than in its monometallic counterparts, leadingt oe fficient photoinducede lectron-hole separation, and thus, Ag-Cu/g-C 3 N 4 achievesb etter photocatalytic H 2 evolution activity.H owever,t he interfacial electronic effects of bimetallic nanoparticles on photocatalytic water splitting are not very clear.…”

Section: Introductionmentioning

confidence: 99%

Advantageous Interfacial Effects of AgPd/g‐C₃N₄ for Photocatalytic Hydrogen Evolution: Electronic Structure and H₂O Dissociation

Zou

et al. 2019

Chemistry A European J

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Bimetallic AgPd nanoparticles have been synthesized before, but the interfacial electronic effects of AgPd on the photocatalytic performance have been investigated less. In this work, the results of hydrogene volution suggest that the bimetallic AgPd/g-C 3 N 4 sample has superiora ctivity to Ag/g-C 3 N 4 and Pd/g-C 3 N 4 photocatalysts. The UV/Vis diffuse reflectances pectroscopy,X -ray photoelectron spectroscopy, CO adsorption diffuse reflectance FTIR spectroscopy,a nd FTIR results demonstrate that in the AgPd/g-C 3 N 4 ,t he surface electronic structures of Pd and Ag are changed, which is beneficial for faster photogenerated electron transfera nd greater H 2 Om olecule adsorption.I nsitu ESR spectra suggest that, under visible light irradiation,t here is more H 2 Odissociation to radicals pecies on the AgPd/g-C 3 N 4 photocatalyst. Furthermore, DFT calculations confirm the interfacial electronic effects of AgPd/g-C 3 N 4 ,that is, Pd dÀ ···Ag d + ,and the activation energyo fH 2 Om olecule dissociation on AgPd/g-C 3 N 4 is the lowest,w hich is the main contributor to the enhanced photocatalytic H 2 evolution.[a] Dr.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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“…Furthermore, this system also shows an excellent quantum efficiency (8.7%) compared with other visible active systems. 84 The authors 84 attributed this enhancement to the inherent property of Pd metal to quench photogenerated electrons by the Schottky barrier formation mechanism and strong visible light absorption due to the characteristic surface plasmon resonance (LSPR) of Ag NPs along with the absorption of PCN (Figure 8).…”

Section: Coupling Semiconductors and Metal Nanoparticlesmentioning

confidence: 99%

An Overview of the Photocatalytic H2 Evolution by Semiconductor-Based Materials for Nonspecialists

Teixeira¹,

Quiroz²,

Homsi³

et al. 2020

J. Braz. Chem. Soc.

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The solar-to-chemical energy conversion is promising to tackle sustainability challenges toward a global future. The production of H 2 from sunlight represents an attractive alternative to the use of carboniferous fossil fuels to meet our energy demands. In this context, the water splitting reaction photocatalyzed by semiconductors that can be excited under visible or near-infrared light excitation represents an attractive route to the clean generation of H 2. In this review, we present an overview of the most important concepts behind the H 2 generation, from water splitting, promoted by semiconductor-based systems for readers that were recently introduced to the water splitting topic. Then, we present the main classes of photocatalysts based on semiconductors. For each class of semiconductors, we focused on the examples that lead to the highest activities towards the H 2 production and discuss the operation principles, advantages, performances, limitations, and challenges. We cover metal oxides, sulfides, and nitrides. We also discuss strategies in which these materials are combined, including hybridization with metal nanoparticles, other semiconductors, and carbon dots, to achieve improved performances and circumvent the limitations of the individual counterparts.

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Pd–Ag decorated g-C₃N₄as an efficient photocatalyst for hydrogen production from water under direct solar light irradiation

Abstract: Pd–Ag bimetallic and monometallic nanoparticles were decorated on g-C3N4 and evaluated for their ability to produce H2 through water splitting reactions.

Cited by 121 publications

References 68 publications

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Advantageous Interfacial Effects of AgPd/g‐C₃N₄ for Photocatalytic Hydrogen Evolution: Electronic Structure and H₂O Dissociation

An Overview of the Photocatalytic H2 Evolution by Semiconductor-Based Materials for Nonspecialists

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Pd–Ag decorated g-C3N4as an efficient photocatalyst for hydrogen production from water under direct solar light irradiation

Abstract: Pd–Ag bimetallic and monometallic nanoparticles were decorated on g-C3N4 and evaluated for their ability to produce H2 through water splitting reactions.

Cited by 121 publications

References 68 publications

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Advantageous Interfacial Effects of AgPd/g‐C3N4 for Photocatalytic Hydrogen Evolution: Electronic Structure and H2O Dissociation

An Overview of the Photocatalytic H2 Evolution by Semiconductor-Based Materials for Nonspecialists

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Pd–Ag decorated g-C₃N₄as an efficient photocatalyst for hydrogen production from water under direct solar light irradiation

Advantageous Interfacial Effects of AgPd/g‐C₃N₄ for Photocatalytic Hydrogen Evolution: Electronic Structure and H₂O Dissociation