英语翻译The highest yields of HCOOH,COand CH4 were obtained usin

英语翻译
The highest yields of HCOOH,CO
and CH4 were obtained using ZnPc–TiO2 prepared by the in situ method.
Depositing ZnPc on commercial titania resulted in lower yields of HCOOH,CO
and CH4 compared to those materials in which TiO2 was obtained by the sol–gel
synthesis.Zhao and co-workers have prepared CoPc–TiO2 nanocomposites by in situ
annulation of 1,2-dicyanobenzene on the surface of TiO2 with Co2+（钴离子的意思） as a template.Comparison of the yields
of HCOOH,CH3OH and HCHO between CoPc–TiO2 prepared by the in situ method and a
physical mixture of CoPc with TiO2 shows that the former catalyst exhibited
higher yield.In contrast,TiO2 is significantly less active.Replacing Co with
Zn or Ni did not improve the photoreduction of CO2 under the studied
experimental conditions.
After optimization of conditions to achieve the highest
photocatalytic activity using CoCl2 as the precursor for the preparation of
CoPc,the same authors have extended the photocatalytic reduction of CO2 using
titania prepared by a sol– gel method as a support of CoPc.The main objective
of this work was to determine the effect of CoPc photosensitization on TiO2 and
to compare the activity of CoPc–TiO2 with pure TiO2 (sol–gel) and commercial
TiO2.All these catalysts have resulted in the formation of CO,CH4,CH3OH,
HCHO and HCOOH.Compared to the commercial TiO2,pure TiO2 exhibits higher photocatalytic
activity towards CO2 reduction.CoPc loading on TiO2 was tested and it was
found that the highest photocatalytic activity was achieved for 0.5 wt%
CoPc–TiO2 (Fig.10).This higher efficiency could be explained considering that
0.5 wt% of CoPc–TiO2 had smaller crystallite sizes with larger specific surfacearea (90.74m2g_1).