Diffuse reflectance UV-vis spectra of pressed powder samples diluted with KBr were recorded on a Shimadzu (UV-3600 spectrophotometer with a Harrick Praying Mantis accessory) and recalculated following the Kubelka–Munk function. Excitation and emission spectra in the solid state, as well as lifetime measurements, were recorded with an Edinburgh FLS 1000 fluorescence spectrometer. Quantum yields were measured in the solid state using a Hamamatsu Quantaurus-QY C11347-11 integrating sphere with different excitation wavelengths.
Mantis
Manufactured by Harrick
The Mantis is a high-resolution optical microscope designed for detailed sample observation. It features a compact, ergonomic design and advanced imaging capabilities to provide clear, high-quality images of your samples.
Automatically generated - may contain errors
3 protocols using mantis
1
Spectroscopic Characterization of Pressed Powders
2
In-situ FTIR Characterization of Powder Samples
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Fourier-transform infrared spectra
of powder samples were obtained with a Bruker Tensor 27 machine and
a room temperature DLaTGS detector. The spectra inFigure 3 were measured in attenuated
total reflection mode with a Pike Technologies GladiATR accessory.
Spectra were recorded with a resolution of 2 cm–1 and 78 scans per measurement. The spectra inFigure 4 were measured in diffuse reflectance mode
with a Harrick Praying Mantis accessory and a high temperature reaction
chamber with ZnSe windows. The reaction chamber was flushed continuously
with humidified N2 during the experiments and the gas outlet
was located directly underneath the sample with KBr background, ensuring
proper gas flow through the powder. The N2 was humidified
to a constant level by bubbling through demineralized water at room
temperature. The KBr background was stabilized at 30 °C for at
least 45 min before recording the background spectrum, after which
a small amount of sample powder was put on top, and the atmosphere
was stabilized again for at least 45 min. The sample was then heated
to 300 °C, kept there for 3 h, cooled to 50 °C, kept there
for 3 h, and heated again to 300 °C. Heating and cooling rates
were 1 °C min–1. Spectra were recorded in situ
every 10 min with a resolution of 2 cm–1 and 78
scans per measurement.
of powder samples were obtained with a Bruker Tensor 27 machine and
a room temperature DLaTGS detector. The spectra in
total reflection mode with a Pike Technologies GladiATR accessory.
Spectra were recorded with a resolution of 2 cm–1 and 78 scans per measurement. The spectra in
with a Harrick Praying Mantis accessory and a high temperature reaction
chamber with ZnSe windows. The reaction chamber was flushed continuously
with humidified N2 during the experiments and the gas outlet
was located directly underneath the sample with KBr background, ensuring
proper gas flow through the powder. The N2 was humidified
to a constant level by bubbling through demineralized water at room
temperature. The KBr background was stabilized at 30 °C for at
least 45 min before recording the background spectrum, after which
a small amount of sample powder was put on top, and the atmosphere
was stabilized again for at least 45 min. The sample was then heated
to 300 °C, kept there for 3 h, cooled to 50 °C, kept there
for 3 h, and heated again to 300 °C. Heating and cooling rates
were 1 °C min–1. Spectra were recorded in situ
every 10 min with a resolution of 2 cm–1 and 78
scans per measurement.
3
In Situ DRIFTS Analysis of CO2 Hydrogenation
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
In situ DRIFTS experiments were conducted on a Thermo Scientific™ Nicolet™ iS50 FT-IR Spectrometer with a HgCdTe detector. A Harrick Praying Mantis™ diffuse reflection accessory and a Harrick high-temperature reaction chamber (HTC) with ZnSe windows were employed, with an additional Harrick ATC-024-3 controller used to provide temperature control. The samples were sealed into the sample cup and then heated to 350 °C under He flow (20 sccm) for 2 h. The samples were then cooled down to room temperature, during which time a series of background spectra were collected at different temperatures. Next, a mixture of CO2, H2 and He gases was purged into the chamber using flow rates of 5, 1 and 14 sccm, respectively. Finally, spectra were collected by taking 128 scans at each different temperature stage with a resolution of 4 cm−1.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!