TY - JOUR
T1 - Ag modified ZnO microsphere synthesis for efficient sonophotocatalytic degradation of organic pollutants and CO2 conversion
AU - Khan, Muhammad Farooq
AU - Bakhtiar, Syed ul Hasnain
AU - Zada, Amir
AU - Raziq, Fazal
AU - Saleemi, Hassan Anwar
AU - Khan, Muhammad Shahzeb
AU - Muhammad Ismail, Pir
AU - Alguno, Arnold C.
AU - Capangpangan, Rey Y.
AU - Ali, Asad
AU - Hayat, Salman
AU - Ali, Sharafat
AU - Ismail, Ahmed
AU - Zahid, Muhammad
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2022/12/1
Y1 - 2022/12/1
N2 - The synthesis and design of non-precious and efficient sonophotocatalyts by an environment friendly technique are requisites for solar energy conversion and environmental remediation. This work reports the preparation of Ag/ZnO microspheres with different Ag contents through deposition–precipitation method for pollutant degradation and CO2 conversion. Detail structural investigation reveals that ZnO microspheres and Ag-ZnO microspheres depicting spherical morphologies with smooth and rough surface respectively. The sonophotoactivties measured at 40 kHz frequency demonstrated that 3Ag/ZnO microsphere exhibited respectively 55 and 28-times improved sonophotoactivities for acid red 17 (AR-17) degradation and CO2 conversion compared with virgin ZnO microsphere. The obtained sonophoto-efficiencies for AR-17 degradation and CO2 conversion were found to be much higher compared to photo-efficiencies under visible-light due to the spatial synergistic effect of sono/photo waves. These unprecedented sonophotoactivities are credited to ultrasonic waves, rapid charge separation and promoted O2 activation. The factors such as the catalyst dosage, dye concentration, time, and temperature influencing the sono-efficiency of dye were also investigated. This continuous advancement has shown that ZnO microsphere-based nanocomposites are critical in the environmental remediation and solar energy generation.
AB - The synthesis and design of non-precious and efficient sonophotocatalyts by an environment friendly technique are requisites for solar energy conversion and environmental remediation. This work reports the preparation of Ag/ZnO microspheres with different Ag contents through deposition–precipitation method for pollutant degradation and CO2 conversion. Detail structural investigation reveals that ZnO microspheres and Ag-ZnO microspheres depicting spherical morphologies with smooth and rough surface respectively. The sonophotoactivties measured at 40 kHz frequency demonstrated that 3Ag/ZnO microsphere exhibited respectively 55 and 28-times improved sonophotoactivities for acid red 17 (AR-17) degradation and CO2 conversion compared with virgin ZnO microsphere. The obtained sonophoto-efficiencies for AR-17 degradation and CO2 conversion were found to be much higher compared to photo-efficiencies under visible-light due to the spatial synergistic effect of sono/photo waves. These unprecedented sonophotoactivities are credited to ultrasonic waves, rapid charge separation and promoted O2 activation. The factors such as the catalyst dosage, dye concentration, time, and temperature influencing the sono-efficiency of dye were also investigated. This continuous advancement has shown that ZnO microsphere-based nanocomposites are critical in the environmental remediation and solar energy generation.
UR - https://linkinghub.elsevier.com/retrieve/pii/S221515322200071X
UR - http://www.scopus.com/inward/record.url?scp=85131966577&partnerID=8YFLogxK
U2 - 10.1016/j.enmm.2022.100711
DO - 10.1016/j.enmm.2022.100711
M3 - Article
SN - 2215-1532
VL - 18
JO - Environmental Nanotechnology, Monitoring and Management
JF - Environmental Nanotechnology, Monitoring and Management
ER -