石墨烯负载单原子Co催化剂

本数据集包括X射线衍射谱，用来确定催化剂样品的物相。具体，将样品均匀分散于乙醇溶液后滴加于硅板上。自然挥发干燥后。样品在Philips X射线衍射仪进行测试。操作电压为40 kV， 电流100 mA，扫速35°/min。测试样品电镜表征来确定催化剂样品形貌。具体，将样品均匀分散于乙醇溶液后滴加于300目C支持膜铜网上。自然挥发干燥后120℃烘干~30分钟。样品在透射电镜JEOL 2010-TEM进行测试。操作电压为200 k。图像采集保留时间为10 ms每像素。采集分辨率为78 pm。TiO2纳米片各元素的光电子能谱信息。通过对不同样品先处理后转移测试中心，进行Ti和O元素的键能信息测试，价态信息测试（由理化测试中心XPS负责老师测试。数据分析经由本实验室老师同学与合作课题组资深专家确认。）测试样品拉曼表征来确定催化剂样品物相。具体，将样品粉末压在玻璃片上，放在RenishawRM3000拉曼系统中测试。激光为532 nm，图像采集保留时间为30 s，输入功率为1.7 mW。测试样品粉末填充至测量窗口，利用532 nm激光为激发源，在荧光发射衰减谱仪-DeltaFlex-NL (HORIBA Scientific) 下测试记录荧光衰减时间，以此来推测光生载流子的寿命。测试样品原子力显微镜表征来确定催化剂纳米片的厚度。具体，将样品将样品均匀分散于乙醇溶液后滴加于云母片上，在eeco DI Nano-scope MultiMode V系统下进行AFM测试，扫速为1.00 Hz。样品在相同条件下二氧化碳等温吸附曲线，用于评估催化剂对反应物二氧化碳的吸附性能。将干燥完备的三种催化剂各取50 mg左右加入专用测试管，设置程序，先脱气处理，然后再进行吸附测试操作，等待仪器自动采集分析完数据。

This dataset includes X-ray diffraction (XRD) spectra for identifying the crystal phases of catalyst samples. Specifically, the sample was uniformly dispersed in an ethanol solution, then dropped onto a silicon wafer. After natural volatilization and drying, the sample was tested on a Philips X-ray diffractometer, with operating parameters of 40 kV acceleration voltage, 100 mA current, and a scanning speed of 35°/min.
Electron microscopy characterization was performed to determine the morphology of the catalyst samples. Specifically, the sample was uniformly dispersed in an ethanol solution, then dropped onto a 300-mesh copper grid with a carbon support film. After natural volatilization and drying, the sample was baked at 120℃ for approximately 30 minutes. The sample was tested on a JEOL 2010-TEM transmission electron microscope at an operating voltage of 200 kV, with an image acquisition time of 10 ms per pixel and an acquisition resolution of 78 pm.
X-ray photoelectron spectroscopy (XPS) data for each element in TiO₂ nanosheets were collected. The binding energy and valence state of Ti and O elements were tested after preprocessing different samples and transferring them to the test center, which was carried out by the senior technician of the Physical and Chemical Testing Center. The data analysis was confirmed by teachers and students from this laboratory and senior experts from cooperating research groups.
Raman characterization was conducted to identify the crystal phases of the catalyst samples. Specifically, the sample powder was pressed onto a glass slide and tested on a RenishawRM3000 Raman system, using a 532 nm laser, with an image acquisition time of 30 s and an input power of 1.7 mW.
The fluorescence decay time of the test samples was measured and recorded using a 532 nm laser as the excitation source on a fluorescence emission decay spectrometer - DeltaFlex-NL (HORIBA Scientific), with the sample powder filled into the measurement window, to infer the lifetime of photogenerated carriers.
Atomic force microscopy (AFM) characterization was performed to determine the thickness of the catalyst nanosheets. Specifically, the sample was uniformly dispersed in an ethanol solution, then dropped onto a mica sheet, and tested on an eeco DI Nano-scope MultiMode V system at a scanning speed of 1.00 Hz.
The carbon dioxide isothermal adsorption curves of the samples were measured under the same conditions to evaluate the adsorption performance of the catalysts towards the reactant CO₂. Approximately 50 mg of each of the three dried catalysts was added to a dedicated test tube, with the testing program set as follows: first perform degassing treatment, then conduct adsorption testing, and wait for the instrument to automatically collect and analyze the data.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于石墨烯负载单原子钴催化剂，提供了包括X射线衍射、透射电镜、光电子能谱、拉曼光谱、荧光衰减时间、原子力显微镜和二氧化碳吸附等在内的多种表征测试数据。这些数据用于分析催化剂的物相结构、形貌特征、元素价态、光生载流子寿命、纳米片厚度以及对二氧化碳的吸附性能，支持相关催化化学研究。