599
Views
18
Downloads
53
Crossref
N/A
WoS
56
Scopus
0
CSCD
High aspect ratio Na0.44MnO2 nanowires with a complex one-dimensional (1-D) tunnel structure have been synthesized. We found that the reaction went through layered birnessite nanosheet intermediates, and that their conversion to the final product involved splitting of the nanosheets into nanowires. Based on our observations, a stress-induced splitting mechanism for conversion of birnessite nanosheets to Na0.44MnO2 nanowires is proposed. The final and intermediate phases show topotaxy with 〈001〉f//〈020〉b or 〈110〉b where f represents the final Na0.44MnO2 phase and b the intermediate birnessite phase. As a result of their high surface areas, the nanowires are efficient catalysts for the oxidation of pinacyanol chloride dye.
High aspect ratio Na0.44MnO2 nanowires with a complex one-dimensional (1-D) tunnel structure have been synthesized. We found that the reaction went through layered birnessite nanosheet intermediates, and that their conversion to the final product involved splitting of the nanosheets into nanowires. Based on our observations, a stress-induced splitting mechanism for conversion of birnessite nanosheets to Na0.44MnO2 nanowires is proposed. The final and intermediate phases show topotaxy with 〈001〉f//〈020〉b or 〈110〉b where f represents the final Na0.44MnO2 phase and b the intermediate birnessite phase. As a result of their high surface areas, the nanowires are efficient catalysts for the oxidation of pinacyanol chloride dye.
Feng, Q.; Kanoh, H.; Ooi, K. Manganese oxide porous crystals. J. Mater. Chem. 1999, 9, 319–333.
Suib, S. L. Microporous manganese oxides. Curr. Opin. Solid State Mater. Sci. 1998, 3, 63–70.
Suib, S. L. Porous manganese oxide octahedral molecular sieves and octahedral layered materials. Acc. Chem. Res. 2008, 41, 479–487.
Doeff, M. M.; Anapolsky, A.; Edman, L.; Richardson, T. J.; De Jonghe, L. C. A high-rate manganese oxide for rechargeable lithium battery applications. J. Electrochem. Soc. 2001, 148, A230–A236.
Hosono, E.; Matsuda, H.; Honma, I.; Fujihara, S.; Ichihara, M.; Zhou, H. Synthesis of single crystalline electro-conductive Na0.44MnO2 nanowires with high aspect ratio for the fast charge-discharge Li ion battery. J. Power Sources 2008, 182, 349–352.
Shen, X.; Ding, Y.; Liu, J.; Laubernds, K.; Zerger, R. P.; Polverejan, M.; Son, Y. -C.; Aindow, M.; Suib, S. L. Synthesis, characterization, and catalytic applications of manganese oxide octahedral molecular sieve (OMS) nanowires with a 2 × 3 tunnel structure. Chem. Mater. 2004, 16, 5327–5335.
Shen, Y. F.; Zerger, R. P.; DeGuzman, R. N.; Suib, S. L.; McCurdy, L.; Potter, D. I.; O'Young, C. L. Manganese oxide octahedral molecular sieves: Preparation, characterization, and applications. Science 1993, 260, 511–515.
Thackeray, M. M. Manganese oxides for lithium batteries. Prog. Solid State Chem. 1997, 25, 1–71.
Yuan, J.; Liu, X.; Akbulut, O.; Hu, J.; Suib, S. L.; Kong, J.; Stellacci, F. Superwetting nanowire membranes for selective absorption. Nat. Nanotechnol. 2008, 3, 332–336.
Wang, X.; Li, Y. Selected-control hydrothermal synthesis of α- and β-MnO2 single crystal nanowires. J. Am. Chem. Soc. 2002, 124, 2880–2881.
Wang, X.; Li, Y. Synthesis and formation mechanism of manganese dioxide nanowires/nanorods. Chem. -Eur. J. 2003, 9, 300–306.
Portehault, D.; Cassaignon, S.; Baudrin, E.; Jolivet, J. -P. Morphology control of cryptomelane type MnO2 nanowires by soft chemistry. Growth mechanisms in aqueous medium. Chem. Mater. 2007, 19, 5410–5417.
Shen, X. -F.; Ding, Y. -S.; Liu, J.; Cai, J.; Laubernds, K.; Zerger, R. P.; Vasiliev, A.; Aindow, M.; Suib, S. L. Control of nanometer-scale tunnel sizes of porous manganese oxide octahedral molecular sieve nanomaterials. Adv. Mater. 2005, 17, 805–809.
Liu, Z. -H.; Ooi, K. Preparation and alkali-metal ion extraction/insertion reactions with nanofibrous manganese oxide having 2 × 4 tunnel structure. Chem. Mater. 2003, 15, 3696–3703.
Xia, G. -G.; Tong, W.; Tolentino, E. N.; Duan, N. -G.; Brock, S. L.; Wang, J. -Y.; Suib, S. L.; Ressler, T. Synthesis and characterization of nanofibrous sodium manganese oxide with a 2 × 4 tunnel structure. Chem. Mater. 2001, 13, 1585–1592.
Liu, L.; Feng, Q.; Yanagisawa, K.; Wang, Y. Characterization of birnessite-type sodium manganese oxides prepared by hydrothermal reaction process. J. Mater. Sci. Lett. 2000, 19, 2047–2050.
Lanson, B.; Drits, V. A.; Feng, Q.; Manceau, A. Structure of synthetic Na-birnessite: Evidence for a triclinic onelayer unit cell. Am. Mineral. 2002, 87, 1662–1671.
Lanson, B.; Drits, V. A.; Silvester, E.; Manceau, A. Structure of H-exchanged hexagonal birnessite and its mechanism of formation from Na-rich monoclinic buserite at low pH. Am. Mineral. 2000, 85, 826–838.
Silvester, E.; Manceau, A.; Drits, V. A. Structure of synthetic monoclinic Na-rich birnessite and hexagonal birnessite: Ⅱ. Results from chemical studies and EXAFS spectroscopy. Am. Mineral. 1997, 82, 962–978.
Segal, S. R.; Suib, S. L.; Foland, L. Decomposition of pinacyanol chloride dye using several manganese oxide catalysts. Chem. Mater. 1997, 9, 2526–2532.
Sabate, R.; Estelrich, J. Determination of the dimerization constant of pinacyanol: Role of the thermochromic effect. Spectrochim. Acta A 2008, 70, 471–476.
Thompson, K. M.; Griffith, W. P.; Spiro, M. Mechanism of bleaching by peroxides. Part 3. Kinetics of the bleaching of phenolphthalein by transition-metal salts in high pH peroxide solutions. J. Chem. Soc., Faraday Trans. 1994, 90, 1105–1114.
Thompson, K. M.; Spiro, M.; Griffith, W. P. Mechanism of bleaching by peroxides. Part 4. Kinetics of bleaching of malvin chloride by hydrogen peroxide at low pH and its catalysis by transition-metal salts. J. Chem. Soc., Faraday Trans. 1996, 92, 2535–2540.
Yiying Wu acknowledges support from the U.S. Department of Energy under Award No. DE-FG02-07ER46427 and a Research Corporation Cottrell Scholar Award.