Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 38, Pages 16390-16399Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nj02270e
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Funding
- National Natural Science Foundation of China [21776117, 21908080]
- Six Talent Peaks project in Jiangsu Province [XCL-014]
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ZnO/g-C(3)N(4)was prepared by carrying out a simple one-step calcination process. The ZnO/g-C(3)N(4)composite was characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflectance spectroscopy (DRS), electrochemical impedance spectroscopy (EIS), transient photocurrent responses and photo-luminescence (PL) spectroscopy. Compared with pure g-C3N4, the composite showed increased photocurrent under UV irradiation, and overall significantly improved photocatalytic performance. Photocatalytic experiments showed specifically the composite made of a ZnO-to-g-C(3)N(4)mass ratio of 3 : 1 displaying the best catalytic performance. The yields of CO and CH(4)under UV irradiation were, respectively, 13.4 times and 49.7 times that of g-C3N4. In addition, a direct Z-scheme electron transfer mechanism was proposed to possibly play a large role in reducing charge recombination and to effectively improve photocatalytic CO(2)reduction.
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