{'fraction_non_alphanumeric': 0.025362318840579712, 'fraction_numerical': 0.0036231884057971015, 'mean_word_length': 5.662650602409639, '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}}
Nitrogen-doped hollow carbon spheres with large mesoporous shells engineered from diblock copolymer micelles.

Nitrogen-doped hollow carbon spheres with engineered large tunable mesoporous (∼20 nm) shells were successfully synthesized for the first time by using the colloidal silica and the diblock copolymer PS-b-PEO as the dual-template and dopamine as the precursor. The unique structural properties enable them to be promising materials as adsorbents, catalyst supports, electrode materials, drug delivery carriers and hosts for active substances.