In the pandemic of Covid-19, online teaching becomes an important method in education. Different online teaching resources are available such as Tencent (QQ) course groups, Tencent conferences, and Massive Open Online Course (MOOCs). The traditional teaching has also been converted into online platforms. Thus, teachers need to learn and use many information technology applications and training skill packages. This research mainly discusses online teaching and students' response to the online course of Chinese culture. Online teaching is simple to operate and achieve the practical purpose of teaching.
In this study, the hydrothermal method was used to synthesize Na[Formula: see text]-doped ZnO nanowires with different concentrations of Na[Formula: see text] ions under different synthesis temperatures. First, ZnO films with a thickness of about 300 nm were deposited on glass substrates as a seed layer, and C6H[Formula: see text]N4, Na(NO[Formula: see text]H2O, and Zn(NO[Formula: see text]H2O were used as source materials to grow the Na[Formula: see text]-doped ZnO nanowires using different Na[Formula: see text] concentrations and under different synthesis temperatures. After the Na[Formula: see text]-doped ZnO nanowires were synthesized, their XRD patterns were obtained to analyze their crystal phases. FESEM observations were used to observe the synthesized morphologies, and a fluorescence spectrophotometer was used to show the photoluminescence excitation (PLE) and photoluminescence (PL) emission properties of the Na[Formula: see text]-doped ZnO nanowires. We showed that Na[Formula: see text] precursor concentrations and synthesis temperatures had considerable effects on the crystal phase, surface morphologies, and PL emission and PLE properties of the Na[Formula: see text]-doped ZnO nanowires.
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