TY - JOUR
T1 - A stable and highly efficient visible-light-driven hydrogen evolution porous CdS/WO3/TiO2 photocatalysts
AU - Qian, Yongteng
AU - Yang, Mengke
AU - Zhang, Fangfang
AU - Du, Jimin
AU - Li, Kaidi
AU - Lin, Xialing
AU - Zhu, Xinrui
AU - Lu, Yayun
AU - Wang, Weimin
AU - Kang, Dae Joon
N1 - Publisher Copyright:
© 2018 Elsevier Inc.
PY - 2018/8
Y1 - 2018/8
N2 - It is well known that both catalytic efficiency and stability are the two important parameters of photocatalysts for visible-light-driven hydrogen production reactions. However, light-driven hydrogen evolution based applications still suffer from sluggish reaction kinetics due to the lack of high-performance photocatalysts. In this paper, we successfully synthesized a ternary porous CdS/WO3/TiO2 photocatalyst with high efficiency and stability via two-stage approach. The as-prepared samples are characterized by XRD, FESEM, EDS, TEM, XPS, and UV–Vis, respectively, which illustrated that the CdS and WO3 moieties are in-situ formed inside the porous TiO2. Particularly, the photocatalytic hydrogen (H2) evolution rate of such ternary 8% CdS/WO3/TiO2 (molar ration of CdS:WO3:TiO2 = 8:8:100) photocatalyst ranges up to 2106 μmol h−1 g−1 under visible-light irradiation, which is higher than that of pure TiO2 and other binary (CdS/TiO2 and WO3/TiO2) porous photocatalysts. The superior H2 evolution efficiency can be attributed to the coexistence of CdS and WO3 in porous TiO2 which can promote the interfacial charge transfer and separation as well as extend the light absorption up to the visible range.
AB - It is well known that both catalytic efficiency and stability are the two important parameters of photocatalysts for visible-light-driven hydrogen production reactions. However, light-driven hydrogen evolution based applications still suffer from sluggish reaction kinetics due to the lack of high-performance photocatalysts. In this paper, we successfully synthesized a ternary porous CdS/WO3/TiO2 photocatalyst with high efficiency and stability via two-stage approach. The as-prepared samples are characterized by XRD, FESEM, EDS, TEM, XPS, and UV–Vis, respectively, which illustrated that the CdS and WO3 moieties are in-situ formed inside the porous TiO2. Particularly, the photocatalytic hydrogen (H2) evolution rate of such ternary 8% CdS/WO3/TiO2 (molar ration of CdS:WO3:TiO2 = 8:8:100) photocatalyst ranges up to 2106 μmol h−1 g−1 under visible-light irradiation, which is higher than that of pure TiO2 and other binary (CdS/TiO2 and WO3/TiO2) porous photocatalysts. The superior H2 evolution efficiency can be attributed to the coexistence of CdS and WO3 in porous TiO2 which can promote the interfacial charge transfer and separation as well as extend the light absorption up to the visible range.
KW - CdS
KW - H evolution
KW - Porous photocatalyst
KW - TiO
KW - WO
UR - https://www.scopus.com/pages/publications/85047318932
U2 - 10.1016/j.matchar.2018.05.025
DO - 10.1016/j.matchar.2018.05.025
M3 - Article
AN - SCOPUS:85047318932
SN - 1044-5803
VL - 142
SP - 43
EP - 49
JO - Materials Characterization
JF - Materials Characterization
ER -
