In:
Friction, Springer Science and Business Media LLC, Vol. 10, No. 7 ( 2022-07), p. 1127-1133
Abstract:
The friction between nanomaterials and Teflon magnetic stirring rods has recently drawn much attention for its role in dye degradation by magnetic stirring in dark. Presently the friction between TiO 2 nanoparticles and magnetic stirring rods in water has been deliberately enhanced and explored. As much as 1.00 g TiO 2 nanoparticles were dispersed in 50 mL water in 100 mL quartz glass reactor, which got gas-closed with about 50 mL air and a Teflon magnetic stirring rod in it. The suspension in the reactor was magnetically stirred in dark. Flammable gases of 22.00 ppm CO, 2.45 ppm CH 4 , and 0.75 ppm H 2 were surprisingly observed after 50 h of magnetic stirring. For reference, only 1.78 ppm CO, 2.17 ppm CH 4 , and 0.33 ppm H 2 were obtained after the same time of magnetic stirring without TiO 2 nanoparticles. Four magnetic stirring rods were simultaneously employed to further enhance the stirring, and as much as 30.04 ppm CO, 2.61 ppm CH 4 , and 8.98 ppm H 2 were produced after 50 h of magnetic stirring. A mechanism for the catalytic role of TiO 2 nanoparticles in producing the flammable gases is established, in which mechanical energy is absorbed through friction by TiO 2 nanoparticles and converted into chemical energy for the reduction of CO 2 and H 2 O. This finding clearly demonstrates a great potential for nanostructured semiconductors to utilize mechanical energy through friction for the production of flammable gases.
Type of Medium:
Online Resource
ISSN:
2223-7690
,
2223-7704
DOI:
10.1007/s40544-021-0505-5
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2787589-1
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