A Gunasakaran and J Jafa and Sariah Saalah and Coswald Stephen Sipaut @ Mohd Nasri and N Yusof and F Aziz and A F Ismail and M R Bilad and N Y Yahya and Noor Maizura Ismail (2021) Activated carbon and halloysite nanotubes membrane for CO2 and CH4 separation.