Transmission electron microscopic (TEM) imaging was carried out on a JEOL 2010 transmission electron microscope operated at an accelerating voltage of 200 kV. Powder X-ray diffraction (PXRD) was performed on a Rigaku Diffractometer (RU200B) using the Kα line of a Cu rotating anode source (40 kV, 150 mA). PL and UV–vis spectra were obtained with a Cary Eclipse (Varian, Inc.) fluorescence spectrometer and a Cary 50 (Varian Inc.). Aerogels were sonicated in toluene to form a dispersion for optical studies. Thermogravimetric analysis (TGA) measurements were performed on a Perkin Elmer, Pyris 1 TGA under nitrogen flow. The surface area of samples was determined by obtaining nitrogen physisorption isotherms on samples at 77 K by using a Micromeritics TriStar II 3020 surface area analyzer and fitting the data using the Brunauer-Emmett-Teller (BET) model. Samples were prepared for physisorption by treating under a He flow at 150 C for several hours. Infrared Spectroscopy (IR) measurements were carried out using a Bruker Tensor 27 FTIR spectrometer to detect the surface organic groups on the aerogels before and after catalysis. A powder of CdS aerogel catalyst or methylene blue was ground with dry KBr to yield a uniform mixture, and this mixture was pressed into a transparent pellet by applying 2000 psi of pressure using a Carver Hydraulic pellet press.
Tristar 2 3020 surface area analyzer
Manufactured by Micromeritics
Sourced in United States
The TriStar II 3020 is a surface area analyzer that measures the specific surface area and pore size distribution of solid materials using the nitrogen adsorption technique. It provides precise and reliable data on the physical properties of a wide range of materials, including catalysts, adsorbents, powders, and nanomaterials.
Automatically generated - may contain errors
Lab products found in correlation
Cary eclipse, by Agilent Technologies (1 mentions)
Pyris 1 tga, by PerkinElmer (1 mentions)
Cary 50, by Agilent Technologies (1 mentions)
Tensor 27 ftir spectrometer, by Bruker (1 mentions)
Vertex 70, by Bruker (1 mentions)
Escalab 250xi xps, by Thermo Fisher Scientific (1 mentions)
Sem regulus 8230, by Hitachi (1 mentions)
Fei tecnai g2 f20 twin tem, by Thermo Fisher Scientific (1 mentions)
Zetasizer nano zs90 zeta potential analyzer, by Malvern Panalytical (1 mentions)
Miniflex 600 diffractometer, by Rigaku (1 mentions)
D8 venture, by Bruker (1 mentions)
Sta 409 pc, by Netzsch (1 mentions)
5 protocols using tristar 2 3020 surface area analyzer
1
Characterization of CdS Aerogel Catalysts
2
Characterizing Mesoporous Silica Nanoparticles
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Morphology of MSNs and AEP-MSNs was visualized by transmission electron microscopy (TEM) using a JEOL 1010 instrument (JEOL Ltd., Peabody, MA) with an accelerating voltage of 70 kV. To prepare the samples, several droplets of nanoparticle suspension (1 mg/ml) were put on a copper grid, dried overnight and coated with carbon.
Nitrogen adsorption-desorption isotherms of samples were obtained with a TriStar II 3020 surface area analyzer (Micromeritics, Norcross, GA). Before each measurement, MSNs were outgassed in the vacuum (below 0.15 mbar) at 300°C for 16 h, while AEP-MSNs were outgassed at room temperature. The specific surface areas were calculated from the adsorption data in the low pressure range using the Brunauer-Emmett-Teller (BET) model (27 (link)). The pore size distribution was determined following the Barrett-Joyner-Halenda (BJH) model. Thermogravimetric analysis (TGA) with a Perkin Elmer TGA7 (Waltham, MA) was used to measure the amount of amine-containing groups on the surface of AEP-MSNs. All the samples were tested under an air atmosphere from 25°C to 800°C at a heating rate of 10°C/min.
Nitrogen adsorption-desorption isotherms of samples were obtained with a TriStar II 3020 surface area analyzer (Micromeritics, Norcross, GA). Before each measurement, MSNs were outgassed in the vacuum (below 0.15 mbar) at 300°C for 16 h, while AEP-MSNs were outgassed at room temperature. The specific surface areas were calculated from the adsorption data in the low pressure range using the Brunauer-Emmett-Teller (BET) model (27 (link)). The pore size distribution was determined following the Barrett-Joyner-Halenda (BJH) model. Thermogravimetric analysis (TGA) with a Perkin Elmer TGA7 (Waltham, MA) was used to measure the amount of amine-containing groups on the surface of AEP-MSNs. All the samples were tested under an air atmosphere from 25°C to 800°C at a heating rate of 10°C/min.
3
Structural and Thermal Characterization of Samples
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The crystal structure of the samples was investigated using Bruker D8 Advance X-ray diffractometer with Cu-Kα radiation (λ = 1.54 Å) at generator voltage of 40 kV and a generator current of 40 mA with a step size of 0.017° from 10° to 80°. Field emission scanning electron microscopy (FESEM) analysis was performed on TESCAN MAIA3 XMU scanning electron microscope, after coating the sample surfaces with a fine gold layer. Fourier transform infrared spectroscopy (FTIR) analysis was carried out to determine the chemical bonding state of the samples with Bruker Vertex 70 in the range of 4000–400 cm−1. Thermogravimetric analysis (TGA) was employed with METTLER STAR SW thermal analyzer at a heating rate of 10°/min from 25 °C to 800 °C. The bulk density of the samples was calculated with the ratio of individual mass of the samples to their volumes. The surface area and pore structure of the samples were investigated with N2 adsorption-desorption isotherms using Micromeritics Tristar II 3020 surface area analyzer. The adsorption-desorption isotherms were obtained at 77 K, after the samples were degassed at 473 K for 8 h. The surface area of the samples was determined as per Brunauer–Emmett–Teller (BET) method. The average pore diameter and pore volume of the samples were also specified using Barrett–Joyner–Halende (BJH) method.
4
Comprehensive Characterization of Biochar
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The FT-IR spectra of the as-fabricated biochar were collected on a Spectrum Two L1600300 spectrometer (PerkinElmer Inc., Waltham, MA, USA). The Raman spectra of the biochar were recorded on a DXR Raman Microscope Laser Raman spectrometer (Thermo Fisher Scientific Inc., Waltham, MA, USA). The XRD patterns of all samples were performed on a MiniFlex600 diffractometer (Rigaku Corporation, Tokyo, Japan) in a range of 10° to 80°. The surface chemical compositions of the as-fabricated biochar were determined by an Escalab 250Xi XPS (Thermo Fisher Scientific Inc., Waltham, MA, USA) characterization. The STA-449F3 thermal balance analyzer (NETZSCH Inc., Selb, Bavaria, Germany) was used to obtain the TG curves of the as-fabricated biochar. The surface morphology of biochars were recorded by SEM images on a REGULUS 8230 SEM (Hitachi Co., Tokyo, Japan) and TEM images on a FEI Tecnai G2 F20-TWIN TEM (FEI Co., Hillsboro, OR, USA). The micromeritics TRISTAR II3020 surface area analyzer (Micromeritics Instrument, Norcross, GA, USA) was used to determine the BET surface area of biochars. Zeta potentials of different pH solutions were recorded on a Zetasizer Nano ZS90 zeta potential analyzer (Malvern Panalytical, Malvern, UK). The total amount of heavy metal ions was determined by an ICP-OES (ICAP7400, BRE0002948, Thermo-Fisher Scientific Inc., Waltham, MA, USA).
5
Comprehensive Characterization of Synthesized Materials
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Tristar II 3020 Surface Area Analyzer (Micromeritics Instrument Ltd. USA) was applied to obtain surface area and pore size distribution of the synthesized materials. The organo-functional group of the synthesized materials was characterized with Fourier transform infrared spectrometer (FTIR, BRUKER TENSOR 27, Germany). High resolution transmission electron microscopy (HRTEM, USA FEI TECNAI G2 F20) was used for the morphology characterization of the synthesized materials. X-ray diffraction analyses (XRD, Germany Bruker D8 venture) and small angle X-ray scattering (SAXS, Germany Bruker SAXS Nanostart) were used to characterize constitute and structure of the synthesized materials. The vibrating sample magnetometer (VSM) was used for magnetic sample characterization (PPMS-9(VSM), Quantum Design, USA). Thermogravimetric analysis (TGA) was measured with TGA IR thermogravimetric analyzer (NETZSCH STA 409 PC, Germany).
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