Enhancement of visible light photocatalytic performances of Bi2MoS2O4 nanoplates

Rui Shi; Tongguang Xu; Lihong Yan

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Enhancement of visible light photocatalytic performances of Bi2MoS2O4 nanoplates

机译：增强BI2MOS2O4纳米板的可见光光催化性能

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A novel Bi2MoS2O4 nanoplate photocatalyst with high-energy efficiency and high-activity has been successfully synthesized by a reflux method. The visible-light response of Bi2MoS2O4 could extend from 480 to 630 nm compared with Bi2MoO6. Compared with Bi2MoO6, the photocatalytic activities of the Bi2MoS2O4 sample increased about 0.4 and 4.6 times for degradation of methylene blue (MB) under UV and visible-light (X > 510 nm) irradiation, respectively. Density functional calculations revealed that Bi2MoS2O4 had a narrower band gap and wider valence bandwidth compared with Bi2MoO5 because S 3p orbitals contributed to the valence band formation. The high energy efficiency of Bi2MoS2O4 photocatalysts came from a narrow bandgap and the high activity came from a wider and dislocated valence band of Bi2MoS2O4. Furthermore, the synthesis of Bi2MoS2O4 could afford guidance for designing the other high-energy efficient and highly active photocatalysts.

机译：一种新型的BI2MOS2O4纳米板光催化剂具有高能效率和高活动性，已通过反流方法成功合成。与BI2MOO6相比，BI2MOS2O4的可见光响应可以从480 nm延伸至630 nm。与BI2MOO6相比，BI2MOS2O4样品的光催化活性分别增加了约0.4和4.6倍，分别在紫外线和可见光（x> 510 nm）照射下降解亚甲基蓝（MB）。密度函数计算表明，与BI2MOO5相比，BI2MOS2O4具有较窄的带隙和更宽的价带宽，因为S 3P轨道有助于价带的形成。 BI2MOS2O4光催化剂的高能效率来自一个狭窄的带隙，高活性来自BI2MOS2O4的更广泛而脱位的价带。此外，BI2MOS2O4的合成可以为设计其他高能有效且高度活跃的光催化剂提供指导。

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来源
《Catalysis science & technology》 |2013年第7期|1757-1764|共8页
作者
Rui Shi; Tongguang Xu; Lihong Yan;
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作者单位

Beijing Cigarette Factory, Beijing, 101121, China;

Department of Chemistry, Tsinghua University, Beijing, 100084, China;

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原文格式 PDF
正文语种英语
中图分类汉语教学;
关键词
Energy efficiency; Refractive surgery enhancement; HIGH ENERGYBand gaphigh energy efficiencyGuidanceVisible LightValence bandUltraviolet RaysPhotocatalysts;

机译：能源效率;屈光手术增强;高能量带的高能能量效率可视灯泡bandultraviolet raysphotocatalysts;

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Enhancement of visible light photocatalytic performances of Bi2MoS2O4 nanoplates

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