Patent ID: 9073037
Filing Date: 2015-07-07
Classification: B01J,C01B,Y02P

Abstract:
1. A method for preparing a semiconductor photocatalyst for photocatalytically reforming biomass derivatives to generate hydrogen, wherein the semiconductor photocatalyst has a formula of Y-M˜N-A x : wherein, Y is one selected from the group consisting of TiO wherein, M˜N is Group II element˜VI element, or M˜N is Group III˜V element; wherein, A is one or two or more elements selected from the group consisting of Co, Ni, Fe, Cu, Cr, Pd, Pt, Ru, Rh, Ir, Au and Ag; and 0.02%≦x≦1.0%; wherein, the Group II element is selected from Zn or Cd; the Group VI element is selected from S, Se, or Te; the Group III element is In, and the Group V element is selected from P or As; wherein, in case that the semiconductor photocatalyst has the formula of M˜N-A 1) introducing quantum dots consisting of Group II˜VI elements or Group III˜V elements into a reactor; 2) introducing into the precipitates one or two or more selected from the group consisting of a cobalt salt, a cobalt complex, a nickel salt, a nickel complex, an iron salt, an iron complex, a copper salt and a chromium salt, or a solution of a salt of Pd, Pt, Ru, Rh, Ir, Au or Ag, to obtain a mixed solution A; 3) introducing an aqueous solution of a biomass derivative into the mixed solution A to obtain a mixed solution B; 4) adjusting the pH value of the mixed solution B to 3˜10 to provide a mixed solution C, wherein the pH is adjusted by dropwise addition of 1 mol/L NaOH or 1 mol/L HCl; 5) degassing the solution C of step 4) with an inert gas or vacuumizing the reactor; and irradiating the reactor with UV light, visible light or a mixed beam of UV and visible light to prepare in situ the semiconductor photcatalyst of formula M˜N-A wherein, in case that the semiconductor photocatalyst has a formula of Y-M˜N-A 1) introducing quantum dots consisting of Group II˜VI elements or Group III˜V elements into a reactor, then adding TiO 2) introducing into the precipitates one or two or more selected from the group consisting of a cobalt salt, a cobalt complex, a nickel salt, a nickel complex, an iron salt, an iron complex, a copper salt and a chromium salt, or a solution of a salt of Pd, Pt, Ru, Rh, Ir, Au or Ag; 3) introducing an aqueous solution of a biomass derivative into the precipitates; 4) irradiating the reactor with UV light and/or visible light to prepare the semiconductor photocatalyst of the formula of TiO