Platinum black INDEX

The index bar is pressed firmly down upon the metal encased in the black-lead, and securely fixed there by the wedge and band of platinum the bar Is... 

The Fluorination of Platinum in the Presence of Powdered Glass.—Fluorine, diluted with nitrogen, was passed in a slow stream over a heated mixture of powdered glass and platinum at 400° and a mixture of pale brown and black particles was left. J -Ray powder photographs showed these particles were two phases. A simple pattern, characteristic of the black material, was indexed on the basis of a rhombohedral unit-cell, a = 5-39 i 0 02 A, a = 54-7 i 0-2°, / = 97 A. Observed and calculated Ijd" values are in Table 3. The complex pattern of the light brown phase was identical with that of platinum oxide trifluoride. 

Zhou ZY, Huang Z-Z, Chen D-J, Wang Q, Tian N, Sun S-G (2010) High-index faceted platinum nanocrystals supported on carbon black as highly ellicicmt catalysts for ethanol electrooxidation. Angew Chem Int Ed 49(2) 411-414... 

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