2 research outputs found
Double-Layer 3D Macro–Mesoporous Metal Oxide Modified Boron-Doped Diamond with Enhanced Photoelectrochemical Performance
In this work, a TiO<sub>2</sub>/Sb-doped
SnO<sub>2</sub> electrode
was prepared on the boron-doped diamond (BDD) substrate with double-layer
three-dimensional macro–mesoporous (DL3DOM-m) structure, using
the polystyrene sphere (PS) vertical deposition method. The as-prepared
DL3DOM-m TiO<sub>2</sub>/SnO<sub>2</sub>/BDD was employed for organic
contaminant removal, showing excellent photoelectrocatalytic performance.
SEM, XRD and XPS indicated that DL3DOM-m electrode possessed a 3D
macroporous layered framework with uniform pore size (about 400 nm),
nanosized particles (4.5–5.8 nm), and high electroactive surface
area (3-fold more than that of BDD). SA-XRD indicated the backbone
of DL3DOM-m electrode had mesoporous structure. It was found that
the as-prepared electrode exhibited remarkable electrocatalytic activity,
high photocurrent and outstanding absorption capability (91.0 μg
cm<sup>–2</sup>). Furthermore, bisphenol A (BPA) was completely
decomposed after 3 h of reaction applying DL3DOM-m electrode as photoanode,
and that on BDD was only 58.9%. It indicated that the modified electrode
had great potential to be used in practical water treatment with high
photoelectrochemical performance
Unveiling the Catalytic Role of Zeolite P1 in Carbonylation Reaction
Zeolite P1, a significant conversion
product of fly ash,
is predominantly
utilized for the removal of metal ions, adsorption of carbon dioxide,
and capture of aromatic compounds. Despite its diverse applications,
its role as a catalyst remains underexplored in the scientific community.
Traditionally, mordenite (MOR) zeolites are considered typical dimethyl
ether (DME) carbonylation catalysts, whose Brønsted acid sites
located on the 8-membered rings (8-MR) are the key active sites for
this reaction. This conventional approach underscores the importance
of specific zeolite structures in facilitating catalytic processes.
H–P1 zeolite was synthesized through a template-free approach
in this paper. When applied to DME carbonylation, this zeolite exhibited
an impressive selectivity of up to 93% for methyl acetate (MA), suggesting
its potential as a highly effective catalyst. This promising outcome
hints at a new frontier for the application of the P1 zeolite, potentially
revolutionizing its role in catalysis and expanding its utility beyond
traditional adsorption processes. The findings suggest that the P1
zeolite could be a versatile material in the realm of catalytic chemistry,
offering new pathways and methodologies for various chemical reactions