Cary 100 scan uv vis system

X-ray diffraction
(XRD) patterns for all SrRuO₃/g-C₃N₄ samples were obtained with a Bruker AXS D4 Endeavour X diffractometer.
Transmission electron microscopy (TEM) images of pure SrRuO₃, g-C₃N_4, and mesoporous 1.5% SrRuO₃/g-C₃N₄ heterostructure acquired using a JEOL
JEM-2100F electron microscope (Japan) operated at 200 kV. Fourier
transform infrared (FT-IR) spectra in the range of 400–4000
cm^–1 for all SrRuO₃/g-C₃N₄ samples were recorded using a PerkinElmer after adding KBr.
The N₂ adsorption/desorption isotherms were measured after
outgassing at 200 °C overnight by employing the Quantachrome
Autosorb equipment at 77 K. X-ray photoelectron spectroscopy (XPS)
measurement for the mesoporous 1.5% SrRuO₃/g-C₃N₄ heterostructure was conducted with a Thermo Scientific
K-ALPHA spectrometer. The diffuse reflectance spectra for pure SrRuO₃, g-C₃N₄, and all mesoporous SrRuO₃/g-C₃N₄ samples were measured using
a Varian Cary 100 scan UV–vis system in the wavelength range
of ∼200–800 nm. Photoluminescence (PL) spectra for pure
SrRuO₃, g-C₃N₄, and all mesoporous
SrRuO₃/g-C₃N₄ samples were measured
employing a 150 W xenon lamp as an excitation source at λ ∼
365 nm via a spectrofluorophotometer, (RF-5301 PC). A Zahner Zennium
electrochemical workstation was used to estimate the transient photocurrent
measurements.

XRD
patterns were determined using the Bruker AXS D4 Endeavour X diffractometer.
TEM images were examined by a JEOL JEM-2100F electron microscope.
N₂ adsorption–desorption isotherms were measured
using the Quantachrome Autosorb equipment at 77 K after outgassing
at 200 °C for 12 h. A spectrofluorophotometer (RF-5301 PC, 400
W, 50/60 Hz) was used to measure the photoluminescence (PL) by employing
a xenon lamp (150 W) as the excitation source at λ ∼
365 nm. Spectra obtained by X-ray photoelectron spectroscopy (XPS)
were analyzed using a Thermo Scientific K-Alpha spectrometer. The
Zahner Zennium electrochemical workstation was employed to determine
the transient photocurrent measurements. The system comprised a standard
three-electrode Pt wire as the counter electrode and a calomel electrode
as the reference electrode; the synthesized samples were used as working
electrodes immersed in 0.1 M Na₂SO₄ as the electrolyte.
A 500 W xenon lamp was applied as the UV–vis light source.
Spectra were recorded using a Perkin Elmer Fourier transform infrared
spectrometer (FT-IR) at 400–4000 cm^–1. Diffuse
reflectance spectra were determined at λ ∼ 200–800
nm by applying a Varian Cary 100 Scan UV–vis system.