A Rational Design of Heterojunction Photocatalyst CdS Interfacing with One Cycle of ALD Oxide

Liu, Mengyin; Xie, Xinjian; Chen, Lei; Wang, Xuewei; Cheng, Yahui; Lu, Feng; Yang, Jing; Du, Xi‐Wen; Zhu, Junda; Liu, Haitao; Dong, Hong; Wang, Weichao; Liu, Hui

doi:10.1016/j.jmst.2016.04.002

Cited by 10 publications

(10 citation statements)

References 36 publications

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“…The main cause can be ascribed to the excess photogenerated holes accumulating on the VB surface and subsequently inducing rapid oxidation of the surface lattice S 2– ions to form S 0 . Another oxidation product is soluble sulfates during and after photocatalytic reactions . The surface structure also showed a significant effect on the stability of spherical-shaped CdS nanoparticles for instance.…”

mentioning

confidence: 99%

“…ALD has also been proposed as an effective way to suppress the corrosion of sulfides. One cycle of ALD TiO 2 or Al 2 O 3 was proposed to passivate CdS powder to balance the carrier transportation and corrosion suppression . Moreover, with the passivation induced by one cycle of ALD, the catalyst lifetime was prolonged by up to 14 times compared to that of the as-prepared CdS.…”

mentioning

confidence: 99%

“…Another oxidation product is soluble sulfates during and after photocatalytic reactions. 49 The surface structure also showed a significant effect on the stability of spherical-shaped CdS nanoparticles for instance. According to an electromagnetic field simulation, the V-shaped defect changed the electric field distribution of the outmost shell and thus the charge distribution, resulting in electrons gathering at the corners and holes transferring into the V-shaped regions.…”

mentioning

confidence: 99%

“…According to an electromagnetic field simulation, the V-shaped defect changed the electric field distribution of the outmost shell and thus the charge distribution, resulting in electrons gathering at the corners and holes transferring into the V-shaped regions. 49 Photodegradation thus accelerates in the V-shaped areas. For the application of metal sulfide in photocatalytic water splitting, photocorrosion is therefore one of the major obstacles for its practical use, especially with a high efficiency.…”

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confidence: 99%

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Stability and Performance of Sulfide-, Nitride-, and Phosphide-Based Electrodes for Photocatalytic Solar Water Splitting

Wei

Vayssières

2017

J. Phys. Chem. Lett.

100

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With the past decade of worldwide sustained efforts on artificial photosynthesis for photocatalytic solar water splitting and clean hydrogen generation by dedicated researchers and engineers from different disciplines, substantial progress has been achieved in raising its overall efficiency along with finding new photocatalysts. Various materials, systems, devices, and better fundamental understandings of the interplay between interfacial chemistry, electronic structure, and photogenerated charge dynamics involved have been developed. Nevertheless, the overall photocatalytic performance is yet to achieve its maximum theoretical limit. Moreover, the stability of well-known semiconductors (as well as novel ones) remains the biggest challenge that scientists are facing to develop durable industrial-scale devices for large-scale water oxidation and overall solar water splitting. In this Perspective, we summarize the major achievements and the different approaches carried out to improve the stability and performance of photoelectrodes based on sulfide, nitride, and phosphide semiconductors.

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confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Stability and Performance of Sulfide-, Nitride-, and Phosphide-Based Electrodes for Photocatalytic Solar Water Splitting

Wei

Vayssières

2017

J. Phys. Chem. Lett.

100

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“…In addition, other strategies have also been explored for the fabrication of heterojunctions, such as chemical vapor deposition (CVD) [110][111][112][113] , atomic layer deposition (ALD) [114][115][116][117][118] , and physical mixing method [119][120][121] . Multiple WS 2 /SnS layered semiconductor heterojunctions were grown on Si wafers via ALD process [122] .…”

Section: Chemical Precipitationmentioning

confidence: 99%

Recent Progress on Visible Light Responsive Heterojunctions for Photocatalytic Applications

Wang

Yun

Luo

et al. 2017

Journal of Materials Science & Technology

185

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Photocatalysis has attracted much attention in recent years due to its potential in solving energy and environmental issues. Even though numerous achievements have been made, the photocatalytic systems developed to date are still far from practical applications due to the low efficiency and poor durability. Efficient light absorption and charge separation are two of the key factors for the exploration of high performance photocatalytic systems, which is generally difficult to be obtained in a single photocatalyst. The combination of various materials to form heterojunctions provides an effective way to better harvest solar energy and to facilitate charge separation and transfer, thus enhancing the photocatalytic activity and stability. This review concisely summarizes the recent development of visible light responsive heterojunctions, including the preparation and performances of semiconductor/semiconductor junctions, semiconductor/cocatalyst junctions, semiconductor/metal junctions, semiconductor/non-metal junctions, and surface heterojunctions, and their mechanism for enhanced light harvesting and charge separation/transfer.

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Alumina‐Protected, Durable and Photostable Zinc Sulfide Particles from Scalable Atomic Layer Deposition

Lange

Reichenberger

Bartsch

et al. 2021

Adv Funct Materials

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Zinc sulfide has unique and easily modifiable photophysical properties and is a promising candidate for photocatalysis and optoelectronic devices. However, ZnS suffers from corrosive decomposition during excitation processes like UV irradiation, which drastically limits its field of potential applications. For the first time, complete photostabilization of individual ZnS particles by a dense, durable, and only 3-nm-thick Al 2 O 3 layer, produced by rotary atomic layer deposition (ALD) is reported. In contrast to bare ZnS, the coated particles do not suffer from photocorrosive degradation even under long-term or high power UV irradiation. The presence of a protection layer covering the entire ZnS surface is additionally confirmed by microscopic and spectroscopic investigations of particle cross-sections. Further, complete inhibition of the reaction between Ag + ions added as the analyte and the ZnS surface is observed. Durability tests of the as-prepared Al 2 O 3 layer upon prolonged exposure to water reveal a significant decrease in the protection capability of the layer, which is ascribed to the hydrolysis of the amorphous Al 2 O 3. A calcination step at 1000 °C after the ALD treatment, which leads to crystallization of the amorphous Al 2 O 3 layer, successfully suppresses this hydrolysis and produces an insulating, dense, and inert protection layer.

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A Rational Design of Heterojunction Photocatalyst CdS Interfacing with One Cycle of ALD Oxide

Cited by 10 publications

References 36 publications

Stability and Performance of Sulfide-, Nitride-, and Phosphide-Based Electrodes for Photocatalytic Solar Water Splitting

Stability and Performance of Sulfide-, Nitride-, and Phosphide-Based Electrodes for Photocatalytic Solar Water Splitting

Recent Progress on Visible Light Responsive Heterojunctions for Photocatalytic Applications

Alumina‐Protected, Durable and Photostable Zinc Sulfide Particles from Scalable Atomic Layer Deposition

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