Embedding laser generated nanocrystals in BiVO4 photoanode for efficient photoelectrochemical water splitting

Jian, Jie; Xu, Youxun; Yang, Xiaokun; Liu, Wei; Fu, Maosen; Yu, Huiwu; Xu, Fei; Feng, Fan; Jia, Lichao; Friedrich, Dennis; Krol, Roel van de; Wang, Hongqiang

doi:10.1038/s41467-019-10543-z

Cited by 166 publications

(101 citation statements)

References 44 publications

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“…In order to cope with the increasingly serious energy crisis, semiconductor photocatalysis has been considered as a prospective technique in response to the photocatalytic water splitting, carbon dioxide reduction, air pollutant removal, degradation of organic compounds and bacteria disinfection . To date, graphitic carbon nitride (g‐C 3 N 4 ), as a promising photocatalyst, has drawn considerable attention in these applications due to its appropriate band gap (2.7 eV), favorable chemical stability, zero toxicity and low cost.…”

Section: Introductionmentioning

confidence: 99%

Delocalization of π‐Electron in Graphitic Carbon Nitride to Promote its Photocatalytic Activity for Hydrogen Evolution

Guan

Zhang

2019

ChemCatChem

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Polymers with a large π‐electron conjugated system have aroused extensive concern in photocatalysis due to their appropriate bandgap and high stability. In order to overcome such drawbacks as its inadequate visible light absorption and rapid recombination of the photogenerated electron‐hole pairs of graphic carbon nitride (g‐C3N4), a facile strategy is proposed to tune its electronic structure by grafting small molecules. The conjugated photocatalysts were prepared by attaching 3‐Aminobenzoic acid (AB) and 6‐Aminopyridine‐2‐carboxylic acid (APy) to the framework of g‐C3N4 via low‐temperature condensation. The obtained catalysts UCN‐AB and UCN‐APy possess higher visible light absorption that results from the modified band structure by extending π‐electron delocalization. Additionally, AB and APy worked as the electron acceptors which further enhance transport of the photogenerated electrons. The optimal UCN‐AB and UCN‐APy accomplished remarkable photocatalytic hydrogen evolution rates of 104.0 and 133.2 μmol/h, respectively, which are nearly four or five times of that over g‐C3N4. This work provides a simple and feasible modification approach to extend π‐electron delocalization in g‐C3N4 with a stronger visible light response and accelerated charge transfer for high photocatalytic hydrogen evolution.

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Section: Introductionmentioning

confidence: 99%

Delocalization of π‐Electron in Graphitic Carbon Nitride to Promote its Photocatalytic Activity for Hydrogen Evolution

Guan

Zhang

2019

ChemCatChem

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“…The green antisolvent of EA was further extensively investigated to explore a variety of ACSs. Figure d,e,g,h shows that viable ACSs can be easily prepared containing Au and La:BaSnO 3 (LBSO) nanocrystals in EA with average sizes less than 5 nm, based on heating–melting–evaporation mechanism involved in pulsed laser irradiation . Embedding of the Au and LBSO nanocrystals led to increased average PCE from 19.09% to 20.35% and 20.61%, and champion PCE from 19.21% to 20.68% and 21.09%, respectively, indicating that these laser‐generated nanocrystals with high conductivity/carrier mobility are helpful for the extraction and transfer of photon‐generated carriers in PSCs (Figures S26–S29 and Tables S3–S4, Supporting Information).…”

Section: Discussionmentioning

confidence: 98%

Laser‐Generated Nanocrystals in Perovskite: Universal Embedding of Ligand‐Free and Sub‐10 nm Nanocrystals in Solution‐Processed Metal Halide Perovskite Films for Effectively Modulated Optoelectronic Performance

Guo

Yang

Qian

et al. 2019

Advanced Energy Materials

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Regulating the chemical/physical features of solution processed metal halide perovskite films by integrating sub‐10 nm nanocrystals is a highly promising strategy to advance their outstanding optoelectronic performance. However, significant challenges remain for the universal embedding of the well‐defined nanocrystals in the film matrix. By generating nanocrystals in desired solvents via pulsed laser irradiation in liquid, the authors demonstrate the effective decoration of sub‐10 nm nanocrystals in perovskite films for enhanced optoelectronic performance. It is believed that this improved performance is due to the modification of the widely adopted “antisolvent” to a novel “anti‐colloidal‐solution” (ACS). Exemplified by a typical ACS; carbon dots in chlorobenzene, its encouraging superiority in regulating, not only the films morphology, but also the electronic structure, is demonstrated. This results in perovskite solar cells with a champion efficiency of 21.41% as well as a pronounced stability over 5000 h in relative humidity of 40%. The capability of nanocrystal embedding for boosted photovoltaic performance is further exploited by employing other laser generated ACSs. Such a strategy may open up a route to regulating hybrid perovskite film performance via nanocrystal embedding for photovoltaics or even beyond optoelectronic applications.

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“…Zeng [126]. Wang et al [127] reported the laser synthesis of ligand-free La:BaSnO 3 nanocrystals by PLAL, and by embedding this laser generated nanocrystals in BiVO 4 photoanode matrix, an enhanced charge transport for photoelectrode was achieved (Fig. 8e).…”

Section: Laser Synthesis Of Nanomaterials By Laser Ablation In Liquidmentioning

confidence: 99%

Laser Synthesis and Microfabrication of Micro/Nanostructured Materials Toward Energy Conversion and Storage

et al. 2021

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Nanomaterials are known to exhibit a number of interesting physical and chemical properties for various applications, including energy conversion and storage, nanoscale electronics, sensors and actuators, photonics devices and even for biomedical purposes. In the past decade, laser as a synthetic technique and laser as a microfabrication technique facilitated nanomaterial preparation and nanostructure construction, including the laser processing-induced carbon and non-carbon nanomaterials, hierarchical structure construction, patterning, heteroatom doping, sputtering etching, and so on. The laser-induced nanomaterials and nanostructures have extended broad applications in electronic devices, such as light–thermal conversion, batteries, supercapacitors, sensor devices, actuators and electrocatalytic electrodes. Here, the recent developments in the laser synthesis of carbon-based and non-carbon-based nanomaterials are comprehensively summarized. An extensive overview on laser-enabled electronic devices for various applications is depicted. With the rapid progress made in the research on nanomaterial preparation through laser synthesis and laser microfabrication technologies, laser synthesis and microfabrication toward energy conversion and storage will undergo fast development.

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Embedding laser generated nanocrystals in BiVO4 photoanode for efficient photoelectrochemical water splitting

Cited by 166 publications

References 44 publications

Delocalization of π‐Electron in Graphitic Carbon Nitride to Promote its Photocatalytic Activity for Hydrogen Evolution

Delocalization of π‐Electron in Graphitic Carbon Nitride to Promote its Photocatalytic Activity for Hydrogen Evolution

Laser‐Generated Nanocrystals in Perovskite: Universal Embedding of Ligand‐Free and Sub‐10 nm Nanocrystals in Solution‐Processed Metal Halide Perovskite Films for Effectively Modulated Optoelectronic Performance

Laser Synthesis and Microfabrication of Micro/Nanostructured Materials Toward Energy Conversion and Storage

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