Encapsulation of tin oxide layers on gold nanoparticles decorated one-dimensional CdS nanoarrays for pure Z-scheme photoanodes towards solar hydrogen evolution

Peng, Zhiyuan; Su, Yilu; Siaj, Mohamed

doi:10.1016/j.apcatb.2023.122614

Cited by 21 publications

(10 citation statements)

References 67 publications

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“…Under visible light irradiation, electrons in the VB of CoNi-LDH and BiVO 4 can be excited and transferred to the corresponding CB, leaving holes in the respective VB. Metal nanoclusters generate photogenerated electron–hole pairs due to their molecular-like structure and the electrons in the CB of BiVO 4 are rapidly transferred to AgAu NCs due to the low Fermi energy levels of noble metals. , …”

Section: Resultsmentioning

confidence: 99%

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Chen,

Jin,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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Atomically precise metal nanoclusters (NCs) present new opportunities for creating innovative solar-powered photoanodes due to their extraordinary physicochemical properties. Nevertheless, ultrasmall metal NCs tend to aggregate and lack active sites under light irradiation, which severely limits their widespread application. We have developed a strategy to design efficient ternary photoanodes by successively modifying AgAu NCs and CoNi-LDH on BiVO 4 substrates using versatile impregnation and electrodeposition. The electronic properties of AgAu NCs facilitate the rapid transfer of photogenerated carriers on BiVO 4 and CoNi-LDH. Additionally, ultrathin CoNi-LDH acts as a hole-collecting layer, which quickly extracts holes to the electrode/electrolyte interface. The synergistic effect and the matched energy levels between the ternary heterostructures promote the OER process, which significantly improved the photoelectrochemical (PEC) water oxidation performance. This study presents a new idea for further exploration of metal nanocluster-based PEC systems.

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Section: Resultsmentioning

confidence: 99%

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Chen,

Jin,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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“…The PL intensity of the CISZ was lower than that of the CIS (Figure S12, Supporting Information), suggesting that the favorable band structure reduced the bulk recombination of the photogenerated electron‐hole pairs in the CISZ. [ 32 ] The time‐resolved transient photoluminescence decay (TRPL, Figure 3e) spectra were also measured to calculate the carrier lifetime ( τ , Table S4, Supporting Information). CISZ ( τ = 28.69 ns) displayed a lower recombination rate and longer τ than CIS ( τ = 17.02 ns).…”

Section: Resultsmentioning

confidence: 99%

Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn₂S₄ for Solar Water Oxidation

Meng,

He,

et al. 2023

Adv Funct Materials

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The surface oxygen evolution reaction (OER) is severely restricted owing to the sluggish OER kinetics and limited number of reactive sites. Although surface reconstruction can introduce defects to improve the OER performance, they often function as recombination centers and cause severe carrier recombination. With the aid of ultrasonication, the CdIn2S4 photoanode surface is reconstructed using Zn‐modified Cd defects without extreme chemical reaction environment. Owing to the surface reconstruction, the formed type‐II band structure is beneficial for separating photogenerated carriers and reduced the bulk recombination. Additionally, the Zn‐modified Cd defects are introduced in situ during the ultrasound cavitation process, which facilitated the carrier transfer, reduced the surface recombination, and increased the number of surface active sites. First‐principles calculations indicate that the modified Cd defects effectively lower the electrochemical reaction barrier and promote the surface OER kinetics by precisely regulating the four‐electron reaction. Consequently, the optimized photoanode exhibits a enhanced photocurrent of 5.30 mA cm−2 at 1.23 V versus reversible hydrogen electrode. These results demonstrate that an accurate surface reconstruction design can be achieved for introducing and modifying metal defects to improve the transfer and transport behaviors of photogenerated carriers.

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“…PEC cells are still in the early stages of development, but the process shows great promise for efficiently utilizing a broader range of the solar spectrum. Much effort was made into creating effective photoelectrode materials, such as TiO 2 , 44 WO 3 , 45 a-Fe 2 O 3 , 46 CdS, 47 SnSe, 48 and BiVO 4 , 49 to improve the PEC water splitting performance. To improve efficiency, photoelectrodes have been modified in several ways, including by synthesizing quantum dots (QDs) [50][51][52] and converting them into colloidal semiconductors by combining them with chalcogenides (sulfides and selenides), 53,54 with 2D materials, 55,56 with carbides or nitride, 57 or with narrowband gap metals and semiconductors.…”

Section: Introductionmentioning

confidence: 99%

Advances and challenges in the modification of photoelectrode materials for photoelectrocatalytic water splitting

Yang,

Li,

Xiang

2024

Mater. Horiz.

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Encapsulation of tin oxide layers on gold nanoparticles decorated one-dimensional CdS nanoarrays for pure Z-scheme photoanodes towards solar hydrogen evolution

Cited by 21 publications

References 67 publications

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn₂S₄ for Solar Water Oxidation

Advances and challenges in the modification of photoelectrode materials for photoelectrocatalytic water splitting

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Encapsulation of tin oxide layers on gold nanoparticles decorated one-dimensional CdS nanoarrays for pure Z-scheme photoanodes towards solar hydrogen evolution

Cited by 21 publications

References 67 publications

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn2S4 for Solar Water Oxidation

Advances and challenges in the modification of photoelectrode materials for photoelectrocatalytic water splitting

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Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn₂S₄ for Solar Water Oxidation