title: A new application of high-efficient silver salts-based photocatalyst under natural indoor weak light for wastewater cleaning.
abstract: As a high-quantum-efficiency photocatalyst, the serious photo-corrosion of silver phosphate (Ag3PO4), limits the practical applications in water purification and challenges us. Herein, Ag3PO4 is found to have a high stability under natural indoor weak light irradiation, suggesting that we can employ it by adopting a new application strategy. In our studies, rhodamine B (RhB, cationic dye), methyl orange (MO, anionic dye) and RhB-MO mixture aqueous solutions are used as the probing reaction for the degradation of organic wastewater. It is found that RhB, MO and RhB-MO can be completely degraded after 28 h under natural indoor weak light irradiation, indicating that multi-component organic contaminants can be efficiently degraded by Ag3PO4 under natural indoor weak light irradiation. The density of natural indoor weak light is measured to be 72cd, which is merely one-thousandth of 300 W xenon lamp (68.2 × 10(3)cd). Most importantly, Ag3PO4 shows a high stability under natural indoor weak light irradiation, demonstrated by the formation of fairly rare Ag. Furthermore, we also investigate the influence of inorganic ions on organic dyes degradation. It shows that the Cl(-) and Cr(6+) ions with high concentrations in wastewater have significantly decreased the degradation rate. From the viewpoint of energy saving and stability, this study shows us that we can utilize the Ag-containing photocatalysts under natural indoor weak light, which could be extended to indoor air cleaning process.
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China; Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom; School of Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
authors.forename: Xia
authors.initials: X
authors.lastname: Hua
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China. Electronic address: tfwd@163.com.
authors.forename: Fei
authors.initials: F
authors.lastname: Teng
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Yunxuan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Xu
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Chuangye
authors.initials: C
authors.lastname: Xu
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Qiqi
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom.
authors.forename: Shashi
authors.initials: S
authors.lastname: Paul
authors.affiliation: Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Mindong
authors.initials: M
authors.lastname: Chen
authors.affiliation: School of Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
authors.forename: Xudong
authors.initials: X
authors.lastname: Zhao
mesh_terms: D001391:Azo Compounds / Q000737:chemistry / Q000528:radiation effects; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry / Q000528:radiation effects; D007700:Kinetics; D008027:Light; D010710:Phosphates / Q000737:chemistry / Q000528:radiation effects*; D012235:Rhodamines / Q000737:chemistry / Q000528:radiation effects; D018030:Silver Compounds / Q000737:chemistry / Q000528:radiation effects*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D010710:Phosphates; D012235:Rhodamines; D018030:Silver Compounds; D014874:Water Pollutants, Chemical; C100258:methyl orange; C029773:rhodamine B; C039072:silver phosphate
keywords: Dye wastewater; Natural indoor weak light; Photocatalysis; Silver salts; Stabilities