Superior As(iii) removal performance of hydrous MnOOH nanorods from water

Song Guo, Wuzhu Sun, Weiyi Yang, Qi Li, Jian Ku Shang

Research output: Contribution to journalArticlepeer-review


Hydrous manganite (MnOOH) nanorods were synthesized by a simple precipitation process in ethanol at room temperature, which eliminated high temperature calcination or a hydrothermal process in the creation of most manganese oxide-based adsorbents and resulted in low energy consumption and subsequently low production cost. These MnOOH nanorods had a high specific surface area at ∼165.9 m2 g-1 and their total pore volume was ∼0.561 cm3 g-1, which was beneficial to their arsenic removal performance. These MnOOH nanorods demonstrated a superior As(iii) removal performance from an aqueous environment. At near neutral conditions (pH ∼ 7), their arsenic adsorption capacity was over 431.2 mg g-1, which was among the highest reported values in the literature. The superior As(iii) removal performance of these MnOOH nanorods relied on the adsorption and subsequent oxidation of As(iii) to less mobilized/toxic As(v), and its fixation on their surface to form inner-sphere arsenic surface complexes.

Original languageEnglish (US)
Pages (from-to)53280-53288
Number of pages9
JournalRSC Advances
Issue number66
StatePublished - 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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