Non-Stacked γ-Fe<sub>2</sub>O<sub>3</sub>/C@TiO<sub>2</sub> Double-Layer Hollow Nanoparticles for Enhanced Photocatalytic Applications under Visible Light
Xun Sun,
Xiao Yan,
Huijuan Su,
Libo Sun,
Lijun Zhao,
Junjie Shi,
Zifan Wang,
Jianrui Niu,
Hengli Qian,
Erhong Duan
Affiliations
Xun Sun
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Xiao Yan
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Huijuan Su
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Libo Sun
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Lijun Zhao
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Junjie Shi
Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
Zifan Wang
Biomedical Research Center, Northwest Minzu University, Lanzhou 730000, China
Jianrui Niu
School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
Hengli Qian
School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
Erhong Duan
School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
Herein, a non-stacked γ-Fe2O3/C@TiO2 double-layer hollow nano photocatalyst has been developed with ultrathin nanosheets-assembled double shells for photodegradation phenol. High catalytic performance was found that the phenol could be completely degraded in 135 min under visible light, due to the moderate band edge position (VB at 0.59 eV and CB at −0.66 eV) of the non-stacked γ-Fe2O3/C@TiO2, which can expand the excitation wavelength range into the visible light region and produce a high concentration of free radicals (such as ·OH, ·O2−, holes). Furthermore, the interior of the hollow composite γ-Fe2O3 is responsible for charge generation, and the carbon matrix facilitates charge transfer to the external TiO2 shell. This overlap improved the selection/utilization efficiency, while the unique non-stacked double-layered structure inhibited initial charge recombination over the photocatalysts. This work provides new approaches for photocatalytic applications with γ-Fe2O3/C-based materials.
