研究目的
Investigating the effect of water-controlled release process (WCRP) on the synthesis, morphology, specific surface area (SSA), and photocatalytic activity of TiO2 nanoparticles.
研究成果
The nanosize TiO2 with controlled morphology and properties were successfully synthesized by the water molecules generated from the esterification or etherification reaction of WCRP. The photocatalytic activity of TiO2 increased with higher reaction temperatures and longer reaction times, which decreased the SSA of TiO2 particles. The addition of organic solvents that form azeotropes with water helped to increase the SSA but had limited effect on photocatalytic activity. The TiO2 obtained in the ethanol/acetic acid system showed the highest photocatalytic activity.
研究不足
The study was limited to the effects of WCRP on TiO2 properties under specific conditions. The photocatalytic activity was not improved by adding organic solvents that form azeotropes with water, and the yield of TiO2 particles was significantly reduced.
1：Experimental Design and Method Selection:
The study utilized the water-controlled release process (WCRP) for the synthesis of TiO2 photocatalyst, focusing on the esterification reaction between alcohols and acids to generate water in situ for the hydrolysis of titanium alkoxides.
2：Sample Selection and Data Sources:
Different alcohols and acids were used to study their effects on the properties of TiO
3：The samples were characterized using XRD, BET SSA analyzer, TEM, and NMR spectroscopy. List of Experimental Equipment and Materials:
Polytetrafluoroethylene lined autoclave, RDV-TM rotary reaction device, XRD (Bruker D2 Phaser), BET SSA analyzer (Quanta Chrome Instruments, Nova 4200e), TEM (FEI Tecnai G2 F20), NMR spectrometer (Bruker AV-III 400 MHz).
4：Experimental Procedures and Operational Workflow:
The reaction mixture was stirred, heated, and then cooled. The product was centrifuged, washed, dried, and ground. Photocatalytic activity was evaluated using a flow type reactor under irradiation.
5：Data Analysis Methods:
The phase composition, SSA, morphology, and photocatalytic activity of TiO2 were analyzed. NMR spectroscopy was used to study the reaction mechanism.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
NMR spectrometer
AV-III 400 MHz
Bruker
Used to study the reaction mechanism of the esterified WCRP system.
暂无现货
预约到货通知
-
X-ray diffraction analyzer
D2 Phaser
Bruker
Used to determine the phase composition of the samples.
暂无现货
预约到货通知
-
Transmission Electron Microscopy
Tecnai G2 F20
FEI
Used to observe the morphologies of the nanoparticles.
立即获取同款设备 -
Polytetrafluoroethylene lined autoclave
Used for the synthesis of TiO2 nanoparticles under controlled conditions.
暂无现货
预约到货通知
-
RDV-TM rotary reaction device
RDV-TM
SAN-AI Kagaku Co. Ltd
Used for heating and stirring the reaction mixture.
暂无现货
预约到货通知
-
BET SSA analyzer
Nova 4200e
Quanta Chrome Instruments
Used to measure the specific surface area of the samples.
暂无现货
预约到货通知
-
登录查看剩余4件设备及参数对照表
查看全部
