Carboxymethyl chitosan-assisted uniformly anchored Pd nanoparticles on carbon nanotubes for methanol electrooxidation in alkaline media

Micro & nano letters

article

Wanli Tang¹  Lang Gan¹  Bohua Wu²  Liqiu Mao¹  Dulin Yin¹ 

[1] Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province and Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University;College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology

关键词: palladium;    nanoparticles;    carbon nanotubes;    nanocomposites;    nanofabrication;    oxidation;    electrochemistry;    catalysis;    catalysts;    carboxymethyl chitosan-assisted method;    carbon nanotubes;    methanol electrooxidation;    alkaline media;    nanohybrid;    palladium nanoparticles;    catalytic activity;    electrochemical oxidation;    fuel cell technology;    catalyst;    Pd-C;   

DOI  :  10.1049/mnl.2014.0589

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Aim: The aim was to compare the effects of dexmedetomidine and remifentanyl in total intraveous anesthesia (TIVA) in laparoscopic cholecystectomy operations. Methodology: Forty, 18-60 years old, elective laparoscopic cholecystectomy patients were included in the study. In Group D, TIVA was performed by 150 μg/kg/min propofol and 0.5 µg/kg/h dexmedetomidine infusions. In Group R patients, TIVA was performed with 150 μg/kg/min propofol and 0.5 µg/kg/min remifentanil infusions. Systolic blood pressure, heart rate, SpO2, end tidal CO2 were recorded. All infusions were terminated at the end of surgery. Adequate spontaneous respiration, extubation, and response to verbal commands; and Aldrete score ≥ 9 times, postoperative pain scores and vital parameters in the postoperative period were recorded. Patient-controlled analgesia pump was used in all postoperative patients. Total analgesic consumption, patients’ first analgesic needs were recorded. Results: Intraoperative Systolic blood pressure, diastolic blood pressure and heart rate values remained significantly lower in remifentanyl group compared to those in dexmedetomidine group (p < 0.05). First postoperative analgesia time was shorter and hemodynamic parameters were significantly higher in this group (p < 0.05). Postoperative recovery of dexmedetomidine group remained more stable in terms of VAS values (p < 0.05). Conclusions: Remifentanil provides a potent intraoperative anesthesia compared with dexmedetomidine; however, dexmedetomidine may be considered in TIVA as an option for a stable postoperative recovery.

【 授权许可】

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