共 47 条
Surface and bulk measurements of metals deposited on activated carbon
被引:74
作者:
Park, SH
McClain, S
Tian, ZR
Suib, SL
Karwacki, C
机构:
[1] UNIV CONNECTICUT,INST MAT SCI,DEPT CHEM,STORRS,CT 06269
[2] UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06269
[3] USA,RTE,SCERD,ERDEC,ABERDEEN PROVING GROUND,MD 21010
关键词:
D O I:
10.1021/cm9602712
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Diffuse reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning Auger microscopy, elemental analyses, BET surface area, and thermogravimetric analyses have been used to study metals and adsorbed organics on the surface of metal-loaded activated carbon materials. Metals such as copper, zinc, and molybdenum have been deposited on activated carbon via incipient wetness methods. Studies of ground and unground samples show that the organic functional groups such as OH, CH2, CH3, C=O, C-O, C-O-C, and CH are exclusively found on the exterior of the metal loaded samples and not in the bulk. Surface studies show that Cu and Zn deposits are on the surface whereas Mo is deposited throughout the bulk of the Mo-loaded activated carbon systems. Surface data for the Cu system suggest the presence of CuCO3 and Cu(OH)P. The Zn species appears to be Zn2+ on the basis of XPS and SAM data. Mo appears to be oxidized, but a specific oxidation state and the oxidic species are not yet able to be determined.
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页码:176 / 183
页数:8
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