Li Ruishuo, Wang Bingquan, Wang Rui
School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
School of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Materials (Basel). 2023 Mar 8;16(6):2177. doi: 10.3390/ma16062177.
In this article, we reported a novel setup treatment using nitric acid vapor to treat g-CN (CN). By treatment with nitric acid vapour, the basic structure of the CN has not been destroyed. These adoptive treatments enhanced the photocatalytic performance of CN and were reflected in the elimination of rhodamine B (RhB) as well as tetracycline hydrochloride (TC). In comparison to CN, CN-6 demonstrated the highest photocatalytic yield for the breakdown of RhB (99%, in 20 min). Moreover, the excellent reuse of CN-6 for breaking down RhB was also demonstrated. This clearly demonstrated that treatment with nitric acid vapor promoted a blue shift, positively extended its valence band position, and increased the oxidizability of the holes. This also caused CN to disperse better into the aqueous phase, introducing more oxygen-containing functional groups. Thus, treatment with nitric acid vapor has the potential to be applied to delaminate the CN in order to enhance photocatalytic activity.
在本文中，我们报道了一种使用硝酸蒸汽处理石墨相氮化碳（g-CN，简称CN）的新型处理方法。通过硝酸蒸汽处理，CN的基本结构未被破坏。这些改性处理提高了CN的光催化性能，这体现在对罗丹明B（RhB）以及盐酸四环素（TC）的降解上。与CN相比，CN-6对RhB分解表现出最高的光催化产率（20分钟内达到99%）。此外，还证明了CN-6对分解RhB具有出色的可重复使用性。这清楚地表明，硝酸蒸汽处理促进了蓝移，正向扩展了其价带位置，并提高了空穴的氧化性。这也使CN在水相中分散得更好，引入了更多含氧基官能团。因此，硝酸蒸汽处理有潜力应用于剥离CN以增强光催化活性。
