Corresponding Author
* Jiayi Liu, E-mail:
827487598@qq.com and *Wenhui
Liu, E-mail: wenhuiliuzb@163.com
Funding: None
Conflict of interest statement: The authors declared that they
have no conflicts of interest to this work. We declare that we do not
have any commercial or associative interest that represents a conflict
of interest in connection with the work submitted.
Permission to reproduce materials from other sources: None
Data Availability statement: The data used to support the
findings of this study are available from the corresponding author upon
request.
Abstract: In this study, a
ZnCo2O4/Ag3PO4composite catalyst was prepared by the precipitation method, and its
photocatalytic degradation activity for methyl orange (MO) was studied.
The catalysts were characterized by TEM, XRD, EDX, HRTEM, SAED, SEM,
XPS, and UV-Vis-DRS. The results indicate that 0.1
ZnCo2O4/Ag3PO4The composite system has a good photocatalytic degradation effect on
methyl orange. Under 30-minute simulated sunlight conditions, the
degradation rate can reach 94%. The results show that the maximum
reaction rate constant of 0.1
ZnCo2O4/Ag3PO4is 0.05301 min-1, which is three times the size of
pure Ag3PO4 and 52 times the size of
pure ZnCo2O4. After three cycles, 0.1
ZnCo2O4/Ag3PO4still degraded methyl orange (MO) at a rate of 84.4%. The trapping
experiment showed that hole (h+) and
O2- played the most important roles in
the photocatalytic degradation field of methyl orange (MO) by 0.1
ZnCo2O4/Ag3PO4,
and hydroxyl radical (OH·) played a partial role. The energy level
structure of
ZnCo2O4/Ag3PO4is conducive to the effective separation of photogenerated electrons and
holes, improving the lifespan of photogenerated charges. Among them, the
photocatalytic performance of 0.1
ZnCo2O4/Ag3PO4is the most excellent.
Keywords: methyl orange; photocatalytic activity;
photogenerated carriers