{'fraction_non_alphanumeric': 0.02789400278940028, 'fraction_numerical': 0.009762900976290097, 'mean_word_length': 5.189655172413793, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Adsorption of Methane on Pristine and Al-Doped Graphene: A Comparative Study via First-Principles Calculation

The adsorption of methane (CH4) molecule on the pristine and Al-doped (4, 8) graphene was investigated via the first-principles calculations. The results demonstrated that, in comparison to the adsorption of a CH4 molecule on the pristine graphene sheet, a relatively stronger adsorption was observed between the CH4 molecule and Al-doped graphene with a shorter adsorption distance, larger binding energy and more charge-transfer from the graphene surface to the CH4 molecule. Therefore, the Al-doped graphene can be expected to be a novel sensor for the detection of CH4 molecules in future applications.