《Table 1The degradation rates and k values for RhB (phenol) degradation by as-prepared samples and o

《Table 1The degradation rates and k values for RhB (phenol) degradation by as-prepared samples and o   提示:宽带有限、当前游客访问压缩模式
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《缺陷辅助表面修饰提高g-C_3N_4@C-TiO_2直接Z型异质结的可见光光催化性能(英文)》


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The photocatalytic activities of the pure Ti O2,g-C3N4g-C3N4@Ti O2,g-C3N4@5C-Ti O2,g-C3N4@10C-Ti O2,and g-C3N4@20C-Ti O2 samples were examined for their Rh B and phenol photodegradation ability under visible-light irradiation(Fig.6).The g-C3N4@C-Ti O2 sample exhibited higher photocatalytic degradation efficiency than those of the pure Ti O2g-C3N4,and g-C3N4@Ti O2 samples(without carbon).With increasing carbon content,the photocatalytic degradation efficiency of g-C3N4@C-Ti O2 initially increased and subsequently decreased.Calculation of the Langmuir-Hinshelwood mechanism(shown in Fig.6 (b)and(d)) showed that g-C3N4@10C-Ti O2 exhibited the largest apparent constant(k)of0.036 and 0.039 min-1 for RhB and phenol photodegradation respectively,which was 150/139,6.4/6.8,2.3/3.0,and 1.7/2.1times higher than those of pure Ti O2,10C-Ti O2,g-C3N4,and g-C3N4@Ti O2,respectively.For comparison,the degradation rates and k values for Rh B and phenol degradation by the as-prepared samples and other reported photocatalysts are listed in Table 1[35–38].