The formation mechanism of a Er<sup>3+</sup>-doped heterojunction ms/tz-BiVO<sub>4</sub> with enhanced photocatalytic performance under visible light

Chen, Ruizhi; Wu, Ping; Ma, Xiaoqing; Jiang, Dongmei

doi:10.1039/c6ra04543j

Cited by 5 publications

(2 citation statements)

References 36 publications

(41 reference statements)

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“…3b) exhibits two peaks located at 529.7 and 531.4 eV, corresponding to the lattice oxygen of layer-structured Bi 2 O 2 2+ and the adsorbed H 2 O or surface hydroxyl group, respectively. 37,38 The high resolution spectrum of Bi 4f (Fig. 3c) presents two peaks at 158.2 (Bi 4f 7/2 ) and 163.5 eV (Bi 4f 5/2 ), which indicate that the Bi species exists as Bi 3+ and can be assigned to Bi 3+ in BiVO 4 QDs.…”

Section: Resultsmentioning

confidence: 98%

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway

et al. 2016

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Carbon dot and BiVO quantum dot composites (CDs/BiVO QDs) show a significantly improved photocatalytic activity and high stability for overall water splitting. By using 5% CDs/BiVO QDs as photocatalysts, the H evolution of 0.92 μmol h, was achieved under solar light irradiation without any cocatalysts or sacrificial reagents, which is about 4 times that of BiVO QDs (0.21 μmol h). Note that, for the CD/BiVO QD catalyst, the produced H and O are approximately equal to the stoichiometric ratio (H : O = 1.80 : 1), while that of BiVO QDs is nonstoichiometric (about only 0.06 : 1). In addition, the present water splitting occurs via a two-electron pathway and CDs and BiVO QDs served as the reduction and oxidation reaction active sites, respectively.

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Section: Resultsmentioning

confidence: 98%

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway

et al. 2016

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“…In recent years, light absorption has been demonstrated in a variety of optoelectronic applications in photovoltaic cells, [1][2][3] spatial light modulation, 4,5 ultrasensitive biosensing, [6][7][8][9] photocatalytic reactions [10][11][12][13] and photodetection. [14][15][16] The extinction of the light-absorbing semiconductors employed in these devices is expected to be high enough to guarantee sufficient light absorption.…”

Section: Introductionmentioning

confidence: 99%

Tunable light trapping and absorption enhancement with graphene ring arrays

Xiao

Wang

Liu

et al. 2016

Phys. Chem. Chem. Phys.

173

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Surface plasmon resonance (SPR) has been intensively studied and widely employed for light trapping and absorption enhancement. In the mid-infrared and terahertz (THz) regime, graphene supports tunable SPR via manipulating its Fermi energy and enhances light-matter interaction at the selected wavelength. Most previous studies have concentrated on the absorption enhancement in graphene itself while little attention has been paid to trapping light and enhancing the light absorption in other light-absorbing materials with graphene SPR. In this work, periodic arrays of graphene rings are proposed to introduce tunable light trapping with good angle polarization tolerance and enhance the absorption in the surrounding light-absorbing materials by more than one order of magnitude. Moreover, the design principle here could be set as a template to achieve multi-band plasmonic absorption enhancement by introducing more graphene concentric rings into each unit cell. This work not only opens up new ways of employing graphene SPR, but also leads to practical applications in high-performance simultaneous multi-color photodetection with high efficiency and tunable spectral selectivity.

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Enhancing photoelectrochemical water oxidation activity of BiVO4 photoanode through the Co-catalytic effect of Ni(OH)2 and carbon quantum dots

Tong

Xia

2023

International Journal of Hydrogen Energy

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The formation mechanism of a Er³⁺-doped heterojunction ms/tz-BiVO₄ with enhanced photocatalytic performance under visible light

Abstract: The formation mechanism of Er3+ doped heterojunction BiVO4 and enhanced photocatalysis.

Cited by 5 publications

References 36 publications

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway

Tunable light trapping and absorption enhancement with graphene ring arrays

Enhancing photoelectrochemical water oxidation activity of BiVO4 photoanode through the Co-catalytic effect of Ni(OH)2 and carbon quantum dots

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The formation mechanism of a Er3+-doped heterojunction ms/tz-BiVO4 with enhanced photocatalytic performance under visible light

Abstract: The formation mechanism of Er3+ doped heterojunction BiVO4 and enhanced photocatalysis.

Cited by 5 publications

References 36 publications

Carbon dot and BiVO4quantum dot composites for overall water splitting via a two-electron pathway

Carbon dot and BiVO4quantum dot composites for overall water splitting via a two-electron pathway

Tunable light trapping and absorption enhancement with graphene ring arrays

Enhancing photoelectrochemical water oxidation activity of BiVO4 photoanode through the Co-catalytic effect of Ni(OH)2 and carbon quantum dots

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The formation mechanism of a Er³⁺-doped heterojunction ms/tz-BiVO₄ with enhanced photocatalytic performance under visible light

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway

Carbon dot and BiVO₄quantum dot composites for overall water splitting via a two-electron pathway