In situ photogenerated defects on surface-complex BiOCl (0 1 0) with high visible-light photocatalytic activity: A probe to disclose the charge transfer in BiOCl (0 1 0)/surface-complex system

Weng, Sunxian; Hu, Jun; Lu, Meiliang; Ye, Xinxin; Pei, Zengxia; Huang, Mianli; Xie, Liyan; Lin, Sen; Liu, Ping

doi:10.1016/j.apcatb.2014.07.051

Cited by 64 publications

(20 citation statements)

References 46 publications

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“…The growth in the [001] direction is suppressed due to the binding of glycerol molecules onto (001) facets that leads to the formation of ultrathin BiOCl nanosheets. Aside from these, the tailored facets growth of BiOCl nanosheets was also successfully achieved recently, by adjusting the pH of the hydrolytic solution with NaOH in hydrothermal route [24,25]. During the crystal growth process, the excess of OH-may weaken the binding interaction of H + to terminal oxygen on the (001) surface of BiOCl, thus suppress the growth of (001) plane and promotes the appearance of {010} facets.…”

Section: Introductionmentioning

confidence: 96%

Constrained growth of ultrasmall BiOCl nanodiscs with a low percentage of exposed {001} facets and their enhanced photoreactivity under visible light irradiation

Chang

Wang

et al. 2015

Applied Catalysis B: Environmental

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Section: Introductionmentioning

confidence: 96%

Constrained growth of ultrasmall BiOCl nanodiscs with a low percentage of exposed {001} facets and their enhanced photoreactivity under visible light irradiation

Chang

Wang

et al. 2015

Applied Catalysis B: Environmental

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“…It is demonstrated that bismuth oxyhalides (BiOX, X = F, Cl, Br, I) feature lamellar structures with strong internal electric field, favoring the separation of photogenerated electron-hole pairs and hereby possessing superior catalytic performance [6][7][8]. Although numerous BiOX materials with different atomic ratios of Bi/O/X have been successfully prepared and developed as efficient photocatalysts [9][10][11][12], there are few literatures concerning systematical studies toward the synthesis and photocatalytic evaluation of Bi 12 [16].…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl pyrrolidone)-assisted hydrothermal synthesis and enhanced visible-light photocatalytic performance of oxygen-rich bismuth oxychlorides

Chang

Luo

Wang

et al. 2015

Journal of Colloid and Interface Science

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a b s t r a c tA series of novel oxygen-rich bismuth oxychloride (Bi 12 O 17 Cl 2 ) were synthesized through a facile poly (vinyl pyrrolidone) (PVP)-assisted hydrothermal route. These obtained Bi 12 O 17 Cl 2 samples were characterized by various physicochemical techniques. It was found that a proper addition amount of PVP could promote the transformation of Bi 12 O 17 Cl 2 morphology from irregular clusters to three-dimensional hierarchical flower-like microspheres that were nominated as sample BP2. As-synthesized samples were subjected to a photocatalytic degradation of dye Rhodamine B (RhB) or 2,4-dichlorophenol (2,4-DCP) under visible light. Among all candidates, the sample BP2 with a hierarchical flower-like morphology showed the best degradation efficiency for RhB and 2,4-DCP. The apparent rate constant of sample BP2 in terms of degradation of RhB was nearly 5.7 and 45 times that of unmodified BP0 and N-TiO 2 . The enhanced photocatalytic performance could be ascribed to synergetic effects including unique hierarchical morphologies, large specific surface area, small particle size, good crystallinity, and suitable band structures. A possible mechanism of catalytic degradation was finally proposed basing upon the active species trapping experiments.

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“…The peaks at 165.8 eV and 160.5 eV are indexed as Bi 3+ in BiPO 4 . The lower binding energies at 163.3 eV and 158.2 eV can be indexed to lower charged Bi ions which are due to the oxygen vacancies present 17,21 . The same phenomenon has also occurred in other oxygen vacancies enriched BiOCl and TiO 2 systems, namely, the appearance of oxygen vacancies induced a lower binding energy peak which was due to Bi 3-x or Ti 3+ 22-24 .For comparison the high resolution XPS spectrum of Bi in WBiPO 4 has also been showed in Figure 3d.…”

Section: +mentioning

confidence: 99%

Synthesis of Surface Oxygen-deficient BiPO4 Nanocubes with Enhanced Visible Light Induced Photocatalytic Activity

Shi

Yin

et al. 2017

Mat. Res.

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The visible light driven BiPO 4 nanocubes with sufficient surface oxygen deficiency were fabricated by a hydrothermal process and subsequently ultrasonic assistant Fe reduction process. The products were characterized by XRD, DRS, XPS, SEM and TEM which showed that the BiPO 4 had cuboid-like shape with a smooth surface and clear edges and the oxygen vacancies were succesfully introduced on the surface of the BiPO 4 nanocubes. The as prepared oxygen-deficient BiPO 4 nanocubes showed greatly enhanced visible light induced photocatalytic activity in degradation of Rhodamine B. The enhanced photocatalytic performance and expanded visible light response of BiPO 4 may be due to the introduction of surface oxygen vacancies which can generate the oxygen vacancies mid-gap states lower to the conduction band of BiPO 4 .

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In situ photogenerated defects on surface-complex BiOCl (0 1 0) with high visible-light photocatalytic activity: A probe to disclose the charge transfer in BiOCl (0 1 0)/surface-complex system

Cited by 64 publications

References 46 publications

Constrained growth of ultrasmall BiOCl nanodiscs with a low percentage of exposed {001} facets and their enhanced photoreactivity under visible light irradiation

Constrained growth of ultrasmall BiOCl nanodiscs with a low percentage of exposed {001} facets and their enhanced photoreactivity under visible light irradiation

Poly(vinyl pyrrolidone)-assisted hydrothermal synthesis and enhanced visible-light photocatalytic performance of oxygen-rich bismuth oxychlorides

Synthesis of Surface Oxygen-deficient BiPO4 Nanocubes with Enhanced Visible Light Induced Photocatalytic Activity

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