1. Energy & Environment Technology Center (EETC), Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering Nanjing University of Information Science and Technology 216 Ningliu Road Nanjing 210044 People's Republic of China
2. Department of Physics Hazara University Mansehra Khyber Pakhtunkhwa 21300 Pakistan