Study of Photoluminescence and Photocatalytic Properties of Hkust-1 Synthesized by Microwave Method
In this studyHKUST-1 was synthesized via microwave method. The as synthesised HKUST-1was were
characterized by various characterization techniques including FTIR, Scanning electron microscopy (SEM), transmission
electron microscopy (TEM), X-ray diffraction (XRD), Uv-Vis diffuse reflectance spectroscopy (Uv-vis DRS) and
photoluminescence (PL) technique. The XRD and FTIR results indicate that diffraction patterns are in accordance with the
previous reports confirming the successful synthesis of HKUST-1. THE results of SEM and TEM analysis clearly suggest
the uniform cube morphology of as synthesized samples with average diameter of about 20 μm. Moreover, the XRD
diffraction pattern and SAED (selected area electron diffraction pattern) results clearly suggest that the synthesized samples
are crystalline in nature. The absorption edge of HKUST-1 was found around 400 nm suggesting that the synthesized sample
absorb towards shorter wavelengths. HKUST-1 was characterized with photoluminescence studies to understand the charge
transfer properties of sample. It was found that the intensity of PL peak is very weak which confirms the efficient electronhole
separation in HKUST-1. The synthesized sample of HKUST-1 was implied for photocatalytic degradation of
Rhodamine B(RhB)aqueous solution under Uv-vis light from mercury-xenon arc lamp. It was found that HKUST-1
degraded 80% of dye in 100 min. The superior photocatalytic ability was attributed to the efficient electron-hole separation
as confirmed by PL analysis also.
Keywords - HKUST-1, microwave method, photocatalytic, photoluminescence, Rhodamine B UV-vis light.