Enhancing photocatalytic activity for visible-light-driven H2 generation with the surface reconstructed LaTiO2N nanostructures

Li, Yaguang; Cheng, Xuanbing; Ruan, X; Song, Hui; Lou, Zirui; Ye, Zhizhen; Zhu, Liping

doi:10.1016/j.nanoen.2015.02.003

Cited by 63 publications

(42 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[33a,66] The shape and void sizes of the hollow nanostructures are mainly determined by the templates, while the shell thickness can be tuned via the coating process. Various hollow‐nanostructured photocatalysts, including TiO 2 , ZnO, SnO 2 , ZnO:GaN, LaTiO 2 N, Ta 3 N 5 , C 3 N 4 ,[17a,66] Fe 2 O 3 , and WO 3 , have been developed by the hard‐template method. Interestingly, more complicated multishell hollow nanostructures can also be obtained by simply controlling the template‐removal process .…”

Section: General Strategies For Preparing Hollow‐nanostructured Photomentioning

confidence: 99%

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

et al. 2018

View full text Add to dashboard Cite

Photocatalysis for solar-driven reactions promises a bright future in addressing energy and environmental challenges. The performance of photocatalysis is highly dependent on the design of photocatalysts, which can be rationally tailored to achieve efficient light harvesting, promoted charge separation and transport, and accelerated surface reactions. Due to its unique feature, semiconductors with hollow structure offer many advantages in photocatalyst design including improved light scattering and harvesting, reduced distance for charge migration and directed charge separation, and abundant surface reactive sites of the shells. Herein, the relationship between hollow nanostructures and their photocatalytic performance are discussed. The advantages of hollow nanostructures are summarized as: 1) enhancement in the light harvesting through light scattering and slow photon effects; 2) suppression of charge recombination by reducing charge transfer distance and directing separation of charge carriers; and 3) acceleration of the surface reactions by increasing accessible surface areas for separating the redox reactions spatially. Toward the end of the review, some insights into the key challenges and perspectives of hollow structured photocatalysts are also discussed, with a good hope to shed light on further promoting the rapid progress of this dynamic research field.

show abstract

Section: General Strategies For Preparing Hollow‐nanostructured Photomentioning

confidence: 99%

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

et al. 2018

View full text Add to dashboard Cite

show abstract

“…After dried in an oven in air at 80 • C for 6 h, the Mg-TiO 2 ultrathin hollow spheres were obtained by calcinating the products in air at 400 • C for 12 h. The continuously variable concentration of Mg ions in TiO 2 could be attempted by regulating the concentration of Mg(NO 3 ) 2 ·6H 2 O in the solution. The as-prepared catalyst for H 2 production and POWS was modified with Pt as a cocatalyst for water splitting based on photo-deposition method reported elsewhere [32]. Briefly, a moderate amount of H 2 PtCl 6 was mixed in the aqueous (90%)/methanol (10%) solution containing samples.…”

Section: Materials Synthesismentioning

confidence: 99%

Passivation of defect states in anatase TiO2 hollow spheres with Mg doping: Realizing efficient photocatalytic overall water splitting

Gao

Ren

et al. 2017

Applied Catalysis B: Environmental

Self Cite

120

View full text Add to dashboard Cite

“…(b) A schematic diagram of energy band structures and the expected transfer direction of electron-hole pairs in the ZnFe 2 O 4 /ZnO nanoheterostructures under visible light irradiation (l > 420 nm).nanoheterostructures,31,32 which result in the higher photocatalytic hydrogen generation efficiency than ZnFe 2 O 4 . It can be observed that both pure ZnFe 2 O 4 and ZnO exhibit an evident PL emission signal.…”

mentioning

confidence: 99%

Preparation of ZnFe₂O₄ nanostructures and highly efficient visible-light-driven hydrogen generation with the assistance of nanoheterostructures

et al. 2015

Self Cite

View full text Add to dashboard Cite

ZnFe 2 O 4 is a promising visible-light-driven photocatalyst with high energy level CBM for hydrogen generation. However, it could only be synthesized in the bulk form and its photocatalytic activities are limited by the rapid recombination of photo-generated carriers. Here, we report the preparation of a ZnFe 2 O 4 nanostructure in ultrathin hollow sphere morphology with a 10 nm thick shell, which could shorten the diffusion distance of photo-generated carriers to minimize their interior recombination.Furthermore, ZnFe 2 O 4 /ZnO nanoheterostructures, containing 15 nm size heterojunctions, could be synthesized facilely. We have found that this unique structure endows ZnFe 2 O 4 /ZnO with a large separation of photo-generated carriers. The hydrogen generation rate of ZnFe 2 O 4 /ZnO nanoheterostructures without co-catalysts is up to 2.15 mmol h À1 g À1 under visible light irradiation (l > 420 nm), which is 45 times higher than the best yields ever reported for ZnFe 2 O 4 -based photocatalysts. These research results provide a general and effective route to synthesize other nanoheterostructures for a variety of applications.

show abstract

Enhancing photocatalytic activity for visible-light-driven H2 generation with the surface reconstructed LaTiO2N nanostructures

Cited by 63 publications

References 33 publications

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

Passivation of defect states in anatase TiO2 hollow spheres with Mg doping: Realizing efficient photocatalytic overall water splitting

Preparation of ZnFe₂O₄ nanostructures and highly efficient visible-light-driven hydrogen generation with the assistance of nanoheterostructures

Contact Info

Product

Resources

About

Enhancing photocatalytic activity for visible-light-driven H2 generation with the surface reconstructed LaTiO2N nanostructures

Cited by 63 publications

References 33 publications

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

Hollow Nanostructures for Photocatalysis: Advantages and Challenges

Passivation of defect states in anatase TiO2 hollow spheres with Mg doping: Realizing efficient photocatalytic overall water splitting

Preparation of ZnFe2O4 nanostructures and highly efficient visible-light-driven hydrogen generation with the assistance of nanoheterostructures

Contact Info

Product

Resources

About

Preparation of ZnFe₂O₄ nanostructures and highly efficient visible-light-driven hydrogen generation with the assistance of nanoheterostructures