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Hydrothermally exfoliated P-doped g-C3N4 decorated with gold nanorods for highly efficient reduction of 4-nitrophenol
Colloids and Surfaces A: Physicochemical and Engineering Aspects ( IF 5.2 ) Pub Date : 2021-01-22 , DOI: 10.1016/j.colsurfa.2021.126187
Hamed Mohtasham , Behnam Gholipour , Sadegh Rostamnia , Azra Ghiasi-Moaser , Mustafa Farajzadeh , Nasrin Nouruzi , Jang Ho Won , Rajender S. Varma , Mohammadreza Shokouhimehr

Au nanorods (AuNRs) decorated phosphorus doped graphitic carbon nitride AuNRs/g-C3N(4-x)Px-NS catalyst have been designed and prepared by a facile hydrothermal approach, which is useful for the efficient reduction of nitroaromatics in aqueous solution using NaBH4 as reductant. A series of conventional characterizations like X-ray diffraction, scanning/transmission electron microscopy, Electron dispersive scanning, elemental mapping, Fourier transform infrared FT-IR, photoluminescence, and X-ray photoelectron spectroscopy were used to identify the physicochemical properties of AuNRs/g-C3N(4-x)Px-NS. The catalytic activities of AuNRs/g-C3N(4-x)Px-NS nanohybrid were studied under different conditions, including the amount of catalyst, NaBH4 dosage, and various temperatures for reduction of 4-nitrophenol (40 mL, 3 mM). Results showed that AuNRs/g-C3N(4-x)Px-NS nanohybrid exhibited superior catalytic performance with turning over (TOF) of 967 for 4-nitrophenol reduction, which is impressively high. In addition, the catalyst exhibited the best performance in reducing the 4-nitrophenol in the shortest possible time. The recyclability and stability of AuNRs/g-C3N(4-x)Px-NS catalyst was also examined.



中文翻译:

金纳米棒修饰的水热剥落的P掺杂gC 3 N 4,可高效还原4-硝基苯酚

通过简便的水热方法设计和制备了金纳米棒(AuNRs)装饰的磷掺杂石墨氮化碳AuNRs / gC 3 N (4-x) P x -NS催化剂,该催化剂可用于有效地还原水溶液中的硝基芳烃。硼氢化钠4 -作为还原剂。X射线衍射,扫描/透射电子显微镜,电子色散扫描,元素图谱,傅立叶变换红外FT-IR,光致发光和X射线光电子能谱等一系列常规表征用于鉴定AuNRs / gC的理化性质3 N (4-x) P x -NS。AuNRs / gC的催化活性在不同条件下研究了3 N (4-x) P x -NS纳米杂化物,包括催化剂用量,NaBH 4剂量和用于还原4-硝基苯酚的各种温度(40 mL,3 mM)。结果表明,AuNRs / gC 3 N (4-x) P x -NS纳米杂化物表现出优异的催化性能,对4-硝基苯酚的还原反应的TOF为967,这是非常高的。另外,该催化剂在最短的时间内显示出还原4-硝基苯酚的最佳性能。还研究了AuNRs / gC 3 N (4-x) P x -NS催化剂的可回收性和稳定性。

更新日期:2021-02-01
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