Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Black phosphorus nanosheets and ZnAl-LDH nanocomposite as environmental-friendly photocatalysts for the degradation of Methylene blue under visible light irradiation
Abstract Environmental-friendly photocatalysts and high utilization of solar energy have attracted much attention; hence, it is important to develop highly efficient and non-toxic photocatalysts. As a novel two-dimensional semiconductor, black phosphorus nanosheets (BPNs) have gotten extensive solicitude due to their tunable bandgap and high carrier mobility. Here, we report a new kind of environmental-friendly nanocomposite consisting of ZnAl-layered double hydroxides (LDH) and BPNs, and is obtained by electrostatic self-assembly method. The acquired photocatalysts were studied by XRD, TEM, EDX, UV–Vis diffuse reflectance spectra, mott-schottky, EIS and ESR techniques so as to gain the information on morphology, structure and properties. Compared to pristine ZnAl-LDH and BPNs, the composite photocatalyst shows the best photocatalytic activity for methylene blue (MB) degradation under visible light irradiation, and the 99% of MB was degraded in 80 min. The improvement of photocatalytic performance is mainly because BPNs provide an additional transfer channel of electrons and holes. The nanocomposites have opened up a new idea to construct black phosphorus (BP) based photocatalysts for environmental remediation.
Highlights BP/LDH show excellent activity for MB degradation under visible light irradiation. An environmental-friendly photocatalyst is obtained by electrostatic self-assembly. The mechanism of BPNs enhanced photocatalytic activity is proposed.
Black phosphorus nanosheets and ZnAl-LDH nanocomposite as environmental-friendly photocatalysts for the degradation of Methylene blue under visible light irradiation
Abstract Environmental-friendly photocatalysts and high utilization of solar energy have attracted much attention; hence, it is important to develop highly efficient and non-toxic photocatalysts. As a novel two-dimensional semiconductor, black phosphorus nanosheets (BPNs) have gotten extensive solicitude due to their tunable bandgap and high carrier mobility. Here, we report a new kind of environmental-friendly nanocomposite consisting of ZnAl-layered double hydroxides (LDH) and BPNs, and is obtained by electrostatic self-assembly method. The acquired photocatalysts were studied by XRD, TEM, EDX, UV–Vis diffuse reflectance spectra, mott-schottky, EIS and ESR techniques so as to gain the information on morphology, structure and properties. Compared to pristine ZnAl-LDH and BPNs, the composite photocatalyst shows the best photocatalytic activity for methylene blue (MB) degradation under visible light irradiation, and the 99% of MB was degraded in 80 min. The improvement of photocatalytic performance is mainly because BPNs provide an additional transfer channel of electrons and holes. The nanocomposites have opened up a new idea to construct black phosphorus (BP) based photocatalysts for environmental remediation.
Highlights BP/LDH show excellent activity for MB degradation under visible light irradiation. An environmental-friendly photocatalyst is obtained by electrostatic self-assembly. The mechanism of BPNs enhanced photocatalytic activity is proposed.
Black phosphorus nanosheets and ZnAl-LDH nanocomposite as environmental-friendly photocatalysts for the degradation of Methylene blue under visible light irradiation
Yang, Junshan (Autor:in) / Jing, Ruisen (Autor:in) / Wang, Pengfei (Autor:in) / Liang, DeRui (Autor:in) / Huang, Hanhan (Autor:in) / Xia, Caifeng (Autor:in) / Zhang, Qian (Autor:in) / Liu, Aiju (Autor:in) / Meng, Zilin (Autor:in) / Liu, Yunyan (Autor:in)
Applied Clay Science ; 200
19.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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