金属氯化物-石墨插层化合物具有导电性优异,石墨层间距大等特点,可用作钠离子电池负极材料。然而,在传统金属氯化物插层石墨过程中,不可避免地用到氯气,既增加了实验操作的风险,也对实验设备提出更高要求。基于上述原因,本文创新性地使...金属氯化物-石墨插层化合物具有导电性优异,石墨层间距大等特点,可用作钠离子电池负极材料。然而,在传统金属氯化物插层石墨过程中,不可避免地用到氯气,既增加了实验操作的风险,也对实验设备提出更高要求。基于上述原因,本文创新性地使用SO_(2)Cl_(2)作为氯源来促进BiCl_(3)插层石墨。该方法不仅有效提高了BiCl_(3)插层效率,也避免了直接使用氯气带来的安全性风险。采用该方法所合成的三氯化铋-石墨插层化合物(BiCl_(3)-GICs)的层间距为1.26 nm,BiCl_(3)插层含量高达42%。以其为负极材料,组装的钠离子电池具有高的比容量(213 mAh g^(-1)at 1 A g^(-1))和优异的倍率性能(170 mAh g^(-1)at 5 A g^(-1))。此外,原位拉曼光谱测试结果表明,首圈放电后石墨与插层的BiCl_(3)相互作用减弱,该过程有效促进了钠离子在石墨层内的存储。采用该方法可成功制备多种类型金属氯化物-石墨插层化合物,为开发高性能储能材料提供了可行思路。展开更多
为了研究注射外源性神经介素B(NMB)对小鼠睾丸中NMB及其受体和睾酮合成关键酶(St AR、CYP11A1和3β-HSD)表达及血清中睾酮浓度的影响,试验将40只雄性ICR小鼠随机分成12 h对照组(12 h Control组)、12 h试验组(12 h NMB组)、24 h对照组(24...为了研究注射外源性神经介素B(NMB)对小鼠睾丸中NMB及其受体和睾酮合成关键酶(St AR、CYP11A1和3β-HSD)表达及血清中睾酮浓度的影响,试验将40只雄性ICR小鼠随机分成12 h对照组(12 h Control组)、12 h试验组(12 h NMB组)、24 h对照组(24 h Control组)和24 h试验组(24 h NMB组),每组10只,2个对照组和2个试验组分别按体重10μL/g腹腔注射生理盐水和10 nmol/L NMB溶液;称量注射前后小鼠体重,计算饲料用量,并观察小鼠行为特征;各组小鼠分别于注射后12小时、24小时摘眼球采血并处死取睾丸,通过ELISA法检测小鼠血清中睾酮的浓度;通过实时荧光定量PCR(q PCR)和蛋白印迹法(Western-blot)检测小鼠睾丸中NMB、NMBR、St AR、CYP11A1和3β-HSD m RNA和蛋白表达量。结果表明:与12 h Control组相比,12 h NMB组小鼠行为无明显异常,体重增量、总摄食量略有减少,料重比略有增高,但差异不显著(P>0.05);NMB、NMBR、St AR、CYP11A1和3β-HSD m RNA及蛋白表达量均差异不显著(P>0.05);血清中睾酮浓度差异不显著(P>0.05)。与24 h Control组相比,24 h NMB组小鼠被毛粗乱、脾气暴躁,体重增量显著减少(P<0.05);总摄食量减少,料重比略有增高,但均差异不显著(P>0.05);NMB m RNA和蛋白表达量极显著降低(P<0.01),NMBR、St AR、CYP11A1和3β-HSD m RNA及蛋白表达量均差异不显著(P>0.05);血清中睾酮浓度差异不显著(P>0.05)。与12 h NMB组相比,24 h NMB组NMBR m RNA表达量极显著降低(P<0.01),24 h NMB组NMBR蛋白表达量显著增加(P<0.05)。说明小鼠腹腔注射NMB能够抑制小鼠摄食,但对小鼠睾丸中睾酮的合成和分泌影响不大。展开更多
The possibility of using activated carbon to remove sulfur-containing species in oil was explored.The desulfurization performance of activated carbons pretreated under different conditions was evaluated by measuring t...The possibility of using activated carbon to remove sulfur-containing species in oil was explored.The desulfurization performance of activated carbons pretreated under different conditions was evaluated by measuring the adsorption isotherms and using a model oil in a batch-type adsorption device.The sulfur content in the model oil is 440×10-6.The results show that the adsorption capability of thiophene on the activated carbon pretreated by oxidizing in HNO3 at 120 ℃ is superior to that of other activated carbons treated by other methods.The optimum adsorption performance can be achieved at the temperature of 20 ℃,the adsorption time of 3 h,and the adsorbent/ oil ratio of 0.09 g/g.The adsorption isotherms of thiophene on the activated carbons fit the Freundlich model and equation satisfactorily.The thiophene adsorption on the activated carbon is a spontaneous.展开更多
基金supported by the National Key Research and Development Program of China (2022YFB4101600)the Fundamental Research Funds for the Central Universities (DUT22ZD207, DUT22LAB612)the Shandong Provincial Natural Science Foundation (ZR2023QB095)。
文摘金属氯化物-石墨插层化合物具有导电性优异,石墨层间距大等特点,可用作钠离子电池负极材料。然而,在传统金属氯化物插层石墨过程中,不可避免地用到氯气,既增加了实验操作的风险,也对实验设备提出更高要求。基于上述原因,本文创新性地使用SO_(2)Cl_(2)作为氯源来促进BiCl_(3)插层石墨。该方法不仅有效提高了BiCl_(3)插层效率,也避免了直接使用氯气带来的安全性风险。采用该方法所合成的三氯化铋-石墨插层化合物(BiCl_(3)-GICs)的层间距为1.26 nm,BiCl_(3)插层含量高达42%。以其为负极材料,组装的钠离子电池具有高的比容量(213 mAh g^(-1)at 1 A g^(-1))和优异的倍率性能(170 mAh g^(-1)at 5 A g^(-1))。此外,原位拉曼光谱测试结果表明,首圈放电后石墨与插层的BiCl_(3)相互作用减弱,该过程有效促进了钠离子在石墨层内的存储。采用该方法可成功制备多种类型金属氯化物-石墨插层化合物,为开发高性能储能材料提供了可行思路。
文摘为了研究注射外源性神经介素B(NMB)对小鼠睾丸中NMB及其受体和睾酮合成关键酶(St AR、CYP11A1和3β-HSD)表达及血清中睾酮浓度的影响,试验将40只雄性ICR小鼠随机分成12 h对照组(12 h Control组)、12 h试验组(12 h NMB组)、24 h对照组(24 h Control组)和24 h试验组(24 h NMB组),每组10只,2个对照组和2个试验组分别按体重10μL/g腹腔注射生理盐水和10 nmol/L NMB溶液;称量注射前后小鼠体重,计算饲料用量,并观察小鼠行为特征;各组小鼠分别于注射后12小时、24小时摘眼球采血并处死取睾丸,通过ELISA法检测小鼠血清中睾酮的浓度;通过实时荧光定量PCR(q PCR)和蛋白印迹法(Western-blot)检测小鼠睾丸中NMB、NMBR、St AR、CYP11A1和3β-HSD m RNA和蛋白表达量。结果表明:与12 h Control组相比,12 h NMB组小鼠行为无明显异常,体重增量、总摄食量略有减少,料重比略有增高,但差异不显著(P>0.05);NMB、NMBR、St AR、CYP11A1和3β-HSD m RNA及蛋白表达量均差异不显著(P>0.05);血清中睾酮浓度差异不显著(P>0.05)。与24 h Control组相比,24 h NMB组小鼠被毛粗乱、脾气暴躁,体重增量显著减少(P<0.05);总摄食量减少,料重比略有增高,但均差异不显著(P>0.05);NMB m RNA和蛋白表达量极显著降低(P<0.01),NMBR、St AR、CYP11A1和3β-HSD m RNA及蛋白表达量均差异不显著(P>0.05);血清中睾酮浓度差异不显著(P>0.05)。与12 h NMB组相比,24 h NMB组NMBR m RNA表达量极显著降低(P<0.01),24 h NMB组NMBR蛋白表达量显著增加(P<0.05)。说明小鼠腹腔注射NMB能够抑制小鼠摄食,但对小鼠睾丸中睾酮的合成和分泌影响不大。
文摘The possibility of using activated carbon to remove sulfur-containing species in oil was explored.The desulfurization performance of activated carbons pretreated under different conditions was evaluated by measuring the adsorption isotherms and using a model oil in a batch-type adsorption device.The sulfur content in the model oil is 440×10-6.The results show that the adsorption capability of thiophene on the activated carbon pretreated by oxidizing in HNO3 at 120 ℃ is superior to that of other activated carbons treated by other methods.The optimum adsorption performance can be achieved at the temperature of 20 ℃,the adsorption time of 3 h,and the adsorbent/ oil ratio of 0.09 g/g.The adsorption isotherms of thiophene on the activated carbons fit the Freundlich model and equation satisfactorily.The thiophene adsorption on the activated carbon is a spontaneous.
