Piezo-phototronic mediated enhanced photodetection characteristics of plasmonic Au-g-C<sub>3</sub>N<sub>4</sub>/CdS/ZnO based hybrid heterojunctions on a flexible platform

Pal, Sourabh; Bayan, Sayan; Ray, S. K.

doi:10.1039/c8nr07091a

Cited by 30 publications

(20 citation statements)

References 43 publications

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“…On the one hand, the excessive consumption of fossil energy has also led to serious environmental crises such on the stirring speed of magnetic mixer, thus assuming that Cu 2 O acts as the medium to convert mechanical energy into chemical energy, and later the concept of mechanical-catalyzed H 2 production was proposed. [27] Up till now, the researches on piezocatalysis have been gradually matured with the reports of various piezocatalysts, such as BaTiO 3 , [28][29][30][31] NaNbO 3 , [32] g-C 3 N 4 , [24,33] Bi 4 Ti 3 O 12 , [34] ZnSnO 3 , [35,36] Na 0.5 Bi 0.5 TiO 3 , [37,38] etc. During this process, it is discovered that the piezocatalytic activity is closely related to some factors such as mechanical energy capture area and catalytic active site, and thus numerous efforts have been devoted to meet these requirements.…”

Section: Introductionmentioning

confidence: 99%

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Lin

Huang

et al. 2021

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as "greenhouse" effect, thermal pollution, etc. [1][2][3] Meanwhile, some renewable energy resources such as solar energy, wind energy and biological energy have become new research targets, [4][5][6] among which hydrogen (H 2 ) fuel is regarded as one of the most ideal secondary energies due to the characteristics of high combustion efficiency, good thermal conductivity and environmental-innocuity, etc. [7,8] At present, the traditional industrial H 2 production route which requires a large amount of coal and petroleum is of low efficiency. The utilization of inexhaustible solar energy to split water into H 2 and O 2 to solve both the energy and environmental issues shows great potential. [9,10] In the past several decades, the metal sulfides, especially solid solution sulfides (e.g., Cd x Zn 1-x S, Cd x Mn 1-x S, (CuIn) x Cd 2(1-x) S 2 , etc.) have become the promising representatives in H 2 production field due to the adjustable bandgap and visible light absorption capacity, among which Cd x Zn 1-x S materials have been extensively investigated, including the tuning of band energy levels, morphology control, fabrication of nanostructures, etc. Nevertheless, the instability during the photocatalytic reaction process caused by the "self-photocorrosion" phenomenon has always restricted the photocatalytic activity at the same time. [11][12][13][14][15][16][17] In addition to solar energy, the mechanical energy exists everywhere in our daily lives, such as water flow, wind, noise, etc. Inspired by the natural mechanical forces, researchers have proposed the notion of piezoelectric optoelectronic effect based on the cooperation of semiconductor, light excitation and piezoelectric characteristics. That is, utilizing the energy stemmed from surrounding environment (e.g., ultrasonic vibration) to induce the formation of polarization electric field from piezoelectrics, and suppress the shielding effect of photogenerated carriers under built-in electric field, subsequently modulating effective separation of intrinsic free electron-hole pairs to trigger redox reactions with surrounding substances, which is named as piezocatalysis. [18][19][20] Similar to photocatalysis, the piezocatalysis can also realize the degradation of organic dyes, [21][22][23] water splitting and energy storage, [24][25][26] etc., via the conversion of mechanical energy into chemical energy.In 1998, Japanese scholar Domen found that the generation amount of H 2 and O 2 far exceeds the dosage of Cu 2 O in the absence of light source, and the reaction rate mainly depends Conversion of solar and mechanical vibration energies for catalytic water splitting into H 2 has gained substantial attention recently. However, the sluggish charge separation and inefficient energy utilization in photocatalytic and piezocatalytic processes severely restrict the catalytic activity. In this paper, efficient piezo-photocatalytic H 2 evolution from water splitting is realized via simultaneously converting solar and vibration energy over one-dimensional (1D) nanorod-stru...

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Section: Introductionmentioning

confidence: 99%

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Lin

Huang

et al. 2021

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“…The peaks at 1021.45 and 1044.76 eV are attributed to Zn 2p 3/2 and 2p 1/2 . The peaks at 404.95 and 411.90 eV in the Au/3DOM CN/Cd (0.58) Zn (0.42) S belongs to the Cd 3d 5/2 and Cd 3d 3/2 . The peaks at 161.45 and 168.71 eV in the Au/3DOM CN/Cd (0.58) Zn (0.42) S belongs to the S 2p 3/2 and S 2p 1/2 (Figure h).…”

Section: Resultsmentioning

confidence: 94%

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

Zhao

et al. 2020

Applied Organom Chemis

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Making several components be more intimate interfacial contacts in the photocatalyst is an efficient strategy to improve the separation and transfer of photogenerated charge carries and enhance the photocatalytic performance in the visible light region. In this work, a promising photocatalyst was fabricated by loading of Au nanoparticles and Cd(0.58)Zn(0.42)S nanoparticles onto the three dimensionally ordered mesoporous g‐C3N4 material (Au/3DOM CN/Cd(0.58)Zn(0.42)S) via two‐step synthesis method to significantly intensify the transfer capability of charge. The results of characterization demonstrate that Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst possesses the intimate interfacial contacts of three components and homogeneous wall thickness of 3DOM g‐C3N4 framework, and these properties give Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst an ability that it can harvest a wider range of visible light and endow it superior photocatalytic activities for hydrogen evolution from water splitting and RhB degradation. Finally, a possible mechanism was proposed based on the photoelectrochemical measurement. This work would provide a new strategy to design and fabricate g‐C3N4‐based with 3DOM architecture materials with superior photocatalytic activity.

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“…By integrating plasmonic Au nanoparticles and g‐C 3 N 4 nanosheets to the CdS/ZnO heterojunction, an improvement of photoresponse was obtained, 10 2 times superior under an applied strain. [ 119 ] More recently, strain engineering, aiming to tune the bandgap of 2D materials, is explored to tune other functionalities of photodetectors. Gant et al.…”

Section: Piezophototronic Effect and Its Applications For 2d Materialsmentioning

confidence: 99%

“…By integrating plasmonic Au nanoparticles and g-C 3 N 4 nanosheets to the CdS/ZnO heterojunction, an improvement of photoresponse was obtained, 10 2 times superior under an applied strain. [119] More recently, strain engineering, aiming to tune the bandgap of 2D materials, is explored to tune other functionalities of photodetectors. Gant et al demonstrated that a thermal expansion-based biaxial straining was applied to a single-layer MoS 2 photodetector, which successfully tuned the response time (80 ms under compressive strain and 1.5 s under tensile strained respectively) and the detection spectral bandwidth(with a gauge factor for the wavelength cut-off shift of 135 meV % −1 or 58 nm % −1 ) besides the 2-3 orders of magnitude lift in photoresponsivity through the control of strain level.…”

Section: Photodetectorsmentioning

confidence: 99%

Tunable Optical Properties of 2D Materials and Their Applications

Ren

et al. 2020

Advanced Optical Materials

154

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unlimited possibilities in the improvement of the performances of optoelectronic devices. [19-23] Beyond that, the properties of 2D materials can be tuned in situ by using different approaches [24-26] to expand the functionalities of optoelectronic devices. Out of them, the tunability in their optical properties has attracted great interest over the past decades where researchers dedicated to discovering various tuning methods to realize desired outcomes. [27,28] More excitingly, owing to the unprecedented electronic properties, high stretchability, magnetism, and thermal conductivity of 2D materials, different tuning approaches such as electrical gating, external strain stimuli, a static magnetic field, surface acoustic waves (SAWs), and thermal heating can be simultaneously adopted to participate the light-matter interaction, leading to the tailored and synergetic optical response of 2D materials. [29] Table 1 illustrates a brief advantages and weaknesses analysis between different optical tuning approaches of 2D and non-2D materials. There is a huge potential to revolutionize the optoelectronic devices by incorporating 2D materials with tunable optical properties. [30,31] So far, researchers have achieved flagship milestones in this area where a diverse set of high-performance optical devices are realized including modulators, photodetectors, optical sources, and optical switches. [32] In this review, we primarily focus on the theoretical and experimental researches of optical effects causing by various external stimuli in 2D materials. In Section 2, 2D materials with electro-optic effect and its application will be discussed, followed by piezophototronic effect and its application in Section 3. In Section 4, 2D materials with magneto-optic effect and its application will be discussed. Then, acousto-optic (AO) effect and its application, and thermo-optic (TO) effect and its application will be discussed in Sections 4 and 5, respectively. In the last section, the conclusion and perspective will be provided. 2. Electro-Optic Effect and Its Applications for 2D Materials 2.1. 2D Materials with Electro-Optic Effect In a broad sense, electro-optic effect is about an optical property change in the materials when applying an electric field. As shown in Figure 1, the refractive index of the material can be tuned in the presence of electric field due to the variation of charge carrier density. [29] This effect involves several Recent efforts have been heavily devoted to the development of next-generation optoelectronic devices based on 2D materials, due to their unique optical properties that are distinctly different from those of bulk counterparts. Given that the feature of flexible tunability is highly desired, various approaches have been demonstrated to efficiently modulate the optical properties, eventually enabling peculiar functionalities or realizing high-performance nanoscale devices. Here, this review focuses on recent advances in tuning the optical properties of 2D materials by external stimuli including elec...

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Piezo-phototronic mediated enhanced photodetection characteristics of plasmonic Au-g-C₃N₄/CdS/ZnO based hybrid heterojunctions on a flexible platform

Abstract: We have studied the piezo-phototronic induced enhancement in the photo-response of CdS/ZnO heterojunctions attached with plasmonic Au nanoparticle loaded 2D-graphitic carbon nitride (g-C3N4).

Cited by 30 publications

References 43 publications

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

Tunable Optical Properties of 2D Materials and Their Applications

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Piezo-phototronic mediated enhanced photodetection characteristics of plasmonic Au-g-C3N4/CdS/ZnO based hybrid heterojunctions on a flexible platform

Abstract: We have studied the piezo-phototronic induced enhancement in the photo-response of CdS/ZnO heterojunctions attached with plasmonic Au nanoparticle loaded 2D-graphitic carbon nitride (g-C3N4).

Cited by 30 publications

References 43 publications

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on CdxZn1‐xS Solid‐Solution 1D Nanorods

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on CdxZn1‐xS Solid‐Solution 1D Nanorods

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C3N4 with homogeneous wall thickness for enhanced photocatalytic performance

Tunable Optical Properties of 2D Materials and Their Applications

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Piezo-phototronic mediated enhanced photodetection characteristics of plasmonic Au-g-C₃N₄/CdS/ZnO based hybrid heterojunctions on a flexible platform

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Synergetic Piezo‐Photocatalytic Hydrogen Evolution on Cd_xZn_1‐xS Solid‐Solution 1D Nanorods

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance