Bioinspired Construction of g-C3N4 Nanolayers on a Carbonized Polydopamine Nanosphere Surface with Excellent Photocatalytic Performance,Industrial & Engineering Chemistry Research

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Bioinspired Construction of g-C3N4 Nanolayers on a Carbonized Polydopamine Nanosphere Surface with Excellent Photocatalytic Performance
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-12 , DOI: 10.1021/acs.iecr.0c00500
Zhiyuan Zhou _{1,

2} , Dong Yang _{1,

3} , Wenjing Wang _{1,

2} , Yao Chen _{2,

4} , Zhanfeng Zhao _{2,

4} , Ke An _{2,

4} , Hanjie Ren _{2,

4} , Zhongyi Jiang _{2,

4,

5}

Affiliation

Graphite-like carbon nitride (CN) has attracted much attention because of its distinct optical and photoelectrical properties, strong stability, and wide applications for environmental restoration and renewable energy. Herein, the CN nanolayer about 7.5–17.5 nm in thickness was in situ built uniformly on the external of carbonized PDA (cPDA) spheres to form the cPDA@CN core/shell nanomaterials on account of the bioinspired adhesion. They possess the mesopore about 4.8 nm in diameter and a high specific surface area (66.6 m² g^–1). The optimal cPDA@CN sample exhibits efficient catalytic activities for the rhodamine B degradation (2.19 h^–1) and H₂ release rate (630 μmol g^–1 h^–1), which are ∼15.4 and ∼10 times of pristine CN, respectively. This research affords a dextrous and scalable way to fabricate the nanostructured photocatalyst with superior performance, which may hold great promise in practical applications.

中文翻译：

具有出色光催化性能的碳化聚多巴胺纳米球表面上gC ₃ N ₄纳米层的生物启发构造

石墨状的氮化碳（CN）由于其独特的光学和光电特性，强大的稳定性以及在环境恢复和可再生能源中的广泛应用而备受关注。在这里，由于受到生物启发的粘附，在碳化PDA（cPDA）球的外部均匀地原位构建了厚度约为7.5-17.5 nm的CN纳米层，从而形成了cPDA @ CN核/壳纳米材料。它们具有直径约4.8 nm的中孔和高比表面积（66.6 m ² g ^–1）。最佳CPDA @ CN样品表现为若丹明B色降解有效的催化活性（2.19ħ ^-1）和H ₂释放速率（630微摩尔克^-1 ħ ^-1），分别是原始CN的约15.4和约10倍。这项研究提供了一种灵活而可扩展的方法来制造具有优异性能的纳米结构光催化剂，这在实际应用中可能具有广阔的前景。

更新日期：2020-06-12

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