Enhanced photocatalytic performance of g-C_3N_4/Bi_4Ti_3O_(12) heterojunction nanocomposites

Ziming Cui; Hua Yang; Xinxin Zhao

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Enhanced photocatalytic performance of g-C_3N_4/Bi_4Ti_3O_(12) heterojunction nanocomposites

机译：g-C_3N_4 / Bi_4Ti_3O_（12）异质结纳米复合材料的光催化性能增强

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Two types of g-C3N4/Bi4Ti3O12p-n heterostructures were prepared by a simple mixing–calcining method. One is constructed from Bi4Ti3O12(BTO) nanoparticles and g-C3N4nanosheets (NS), and the other is constructed from BTO nanoparticles and g-C3N4nanoparticles (NP). The structures, morphologies, optical and electrochemical properties of the samples were systematically characterized. PL spectra, EIS spectra and photocurrent responses demonstrate an effective separation of photogenerated electron-hole pairs for the composites. The photocatalytic performance of the composites was evaluated by the degradation of rhodamine B (RhB) under simulated-sunlight irradiation, revealing that they exhibit an enhanced photocatalytic activity compared to bare BTO and g-C3N4. The highest photocatalytic activity is observed for the composites with g-C3N4content centered around 10%. Furthermore, g-C3N4(NP)/BTO composites integrated from BTO and g-C3N4nanoparticles possess a superior photocatalytic activity compared to those integrated from BTO nanoparticles and g-C3N4nanosheents.

机译：通过简单的混合煅烧方法制备了两种类型的g-C3N4 / Bi4Ti3O12p-n异质结构。一种由Bi4Ti3O12（BTO）纳米颗粒和g-C3N4纳米片（NS）构成，另一种由BTO纳米颗粒和g-C3N4纳米片（NP）构成。系统地表征了样品的结构，形态，光学和电化学性质。 PL光谱，EIS光谱和光电流响应证明了复合材料光生电子-空穴对的有效分离。通过在模拟阳光照射下若丹明B（RhB）的降解来评估复合材料的光催化性能，表明与裸露的BTO和g-C3N4相比，它们表现出增强的光催化活性。对于g-C3N4含量在10％左右的复合材料，观察到最高的光催化活性。此外，与由BTO纳米粒子和g-C3N4纳米粒子集成的复合材料相比，由BTO和g-C3N4纳米粒子集成的g-C3N4（NP）/ BTO复合材料具有优异的光催化活性。

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来源
《Materials Science and Engineering》 |2018年第3期|160-172|共13页
作者
Ziming Cui; Hua Yang; Xinxin Zhao;
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作者单位

State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology,School of Science, Lanzhou University of Technology;

State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology,School of Science, Lanzhou University of Technology;

School of Science, Lanzhou University of Technology;

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正文语种 eng
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关键词
Bi4Ti3O12nanoparticles; g-C3N4nanosheets; g-C3N4nanoparticles; g-C3N4/Bi4Ti3O12heterojunction; Photocatalytic performance;

机译：Bi4Ti3O12纳米颗粒;g-C3N4纳米片;g-C3N4纳米颗粒;g-C3N4 / Bi4Ti3O12异质结;光催化性能;

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Enhanced photocatalytic performance of g-C_3N_4/Bi_4Ti_3O_(12) heterojunction nanocomposites

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