1. Chemical & Material Sciences Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Mohkampur, Dehradun-248005, India
2. Academy of Scientific and Innovative Research, New Delhi-110001, India
3. Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
4. Director, CSIR-Indian Institute of Petroleum, Haridwar Road, Mohkampur, Dehradun-248005, India