TY - JOUR
T1 - Reduced graphene oxide/ZnO nanohybrids
T2 - Metallic Zn powder induced one-step synthesis for enhanced photocurrent and photocatalytic response
AU - Song, Na
AU - Fan, Huiqing
AU - Tian, Hailin
N1 - Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/10/30
Y1 - 2015/10/30
N2 - Reduced graphene oxide hybridized hierarchical ZnO nanorods (RGO/ZnO) were fabricated through thermal treatment of aqueous solution containing metallic Zn powder, Zn(NO 3 ) 2 ·6H 2 O, graphene oxide (GO), and NaOH at 110 °C. This one-spot, additives-free method successfully made metallic Zn powder a reducing agent of GO, a precursor of ZnO, and also a morphology controller of RGO/ZnO. RGO/ZnO nanohybrids with 4 wt-% of RGO displayed optimal photocurrent and photocatalytic response under UV irradiation with 10 times and 2.2 times that of pure ZnO nanoflowers, respectively. Strong coupling and electronic interaction between GO and ZnO were verified by using XPS measurement and photoelectrochemical technique. The combination of supreme absorption (of UV light and dye), suppressed photogenerated carriers recombination, and decreased solid interlayer resistance of nanohybrids contributed to their superior photochemical properties.
AB - Reduced graphene oxide hybridized hierarchical ZnO nanorods (RGO/ZnO) were fabricated through thermal treatment of aqueous solution containing metallic Zn powder, Zn(NO 3 ) 2 ·6H 2 O, graphene oxide (GO), and NaOH at 110 °C. This one-spot, additives-free method successfully made metallic Zn powder a reducing agent of GO, a precursor of ZnO, and also a morphology controller of RGO/ZnO. RGO/ZnO nanohybrids with 4 wt-% of RGO displayed optimal photocurrent and photocatalytic response under UV irradiation with 10 times and 2.2 times that of pure ZnO nanoflowers, respectively. Strong coupling and electronic interaction between GO and ZnO were verified by using XPS measurement and photoelectrochemical technique. The combination of supreme absorption (of UV light and dye), suppressed photogenerated carriers recombination, and decreased solid interlayer resistance of nanohybrids contributed to their superior photochemical properties.
KW - Electronic interaction
KW - Hierarchical ZnO nanorods
KW - Photocatalytic
KW - Reduced graphene oxide
UR - http://www.scopus.com/inward/record.url?scp=84941964385&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2015.06.062
DO - 10.1016/j.apsusc.2015.06.062
M3 - 文章
AN - SCOPUS:84941964385
SN - 0169-4332
VL - 353
SP - 580
EP - 587
JO - Applied Surface Science
JF - Applied Surface Science
ER -