Patent ID: 11896957
Assignee: CHUNG YUAN CHRISTIAN UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A method for degrading NOx in a sample, comprising,
(i) mixing the sample with a photocatalyst produced by a method comprising,
(a) mixing a transitional metal or an oxide thereof with a solvent at a ratio of 1:10 (w/v) to produce a first mixture;
(b) mixing a bone powder or a shell powder with the first mixture of step (a) to produce a second mixture, in which the bone powder or the shell powder and the transitional metal or the oxide thereof are present in the second mixture at a weight ratio of 0.1:1 to 10:1 (w/w);
(c) heating the second mixture of step (b) to produce a dehydrated product; and
(d) calcinating the dehydrated product of step (c) to produce the photocatalyst; and
(ii) irradiating the mixture of step (i) with solar light or visible light for at least 5 minutes;
wherein the step (ii) is carried out at a humidity of 40%.