Details

Autor(en) / Beteiligte

• Mei, Shunkang
• Gao, Jianping
• Zhang, Ye
• Yang, Jiangbing
• Wu, Yongli
• Wang, Xiaoxue
• Zhao, Ruiru
• Zhai, Xiangang
• Hao, Chaoyue
• Li, Ruixia
• Yan, Jing

Titel

Enhanced visible light photocatalytic hydrogen evolution over porphyrin hybridized graphitic carbon nitride

Ist Teil von

• Journal of colloid and interface science, 2017-11, Vol.506, p.58-65

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] Tetra (4-carboxyphenyl) porphyrin (TCPP) was loaded on the surface of Pt/g-C3N4 via a simple adsorption process, and the microstructure and chemical structure of the composites were characterized by high resolution transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV–visible diffused reflectance spectroscopy and photoluminescence spectroscopy. Loading TCPP onto Pt/g-C3N4 enhanced the visible-light-driven photocatalytic evolution of H2 from water. The TCPP/Pt/g-C3N4 composite with a TCPP loading of 1wt% had the highest photoactivity, which was 2.1 times higher than that of Pt/g-C3N4. This improvement is attributed to enhanced visible light utilization by the TCPP/Pt/g-C3N4 resulting from the strong visible light response of TCPP. In addition, the formed organic heterostructure between TCPP and g-C3N4 with overlapping bad gaps accelerates the electron transfer and inhibits the recombination of the photogenerated electrons and holes on g-C3N4.