Graphene oxide adsorption enhanced by in situ reduction with sodium hydrosulfite to remove acridine orange from aqueous solution.
Graphene oxide (GO) is a highly effective adsorbent, and its absorbing capability is further enhanced through its in situ reduction with sodium hydrosulfite as the reductant. Acridine orange is the selected target to eliminate with GO as the adsorbent. Under identical conditions, GO without the in situ reduction showed a maximum adsorption capacity of 1.4 g g(-1), and GO with the in situ reduction provided a maximum adsorption capacity of 3.3 g g(-1). Sodium hydrosulfite converts carbonyl groups on GO into hydroxyl groups, which function as the key sites for the adsorption enhancement.
Laboratory of Environmental Remediation, Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan.
Ling
L
Sun
Hongwen
H
Yu
Bunshi
B
Fugetsu
D000165:Acridine Orange / Q000302:isolation & purification*; D000327:Adsorption; D006108:Graphite / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D010087:Oxides / Q000737:chemistry; D012996:Solutions; D013440:Sulfides / Q000737:chemistry*; D014867:Water
D010087:Oxides; D012996:Solutions; D013440:Sulfides; D014867:Water; D006108:Graphite; D000165:Acridine Orange; C025451:sodium bisulfide