为提高壳聚糖季铵盐(quaternary ammonium salt of chitosan,HTCC)涂膜剂对蓝莓的保鲜作用,在HTCC溶液中分别添加0.5%的丁香和甘草提取液并对蓝莓进行涂膜,研究在4℃下这两种复合涂膜对蓝莓的保鲜效果。结果表明:与单独HTCC涂膜相比,两...为提高壳聚糖季铵盐(quaternary ammonium salt of chitosan,HTCC)涂膜剂对蓝莓的保鲜作用,在HTCC溶液中分别添加0.5%的丁香和甘草提取液并对蓝莓进行涂膜,研究在4℃下这两种复合涂膜对蓝莓的保鲜效果。结果表明:与单独HTCC涂膜相比,两种复合涂膜均可以降低蓝莓的失重率,减少V_C含量和硬度的降低,减缓花青素的变化,具有较好的保鲜效果。且添加丁香提取液的涂膜的保鲜效果要好于添加甘草提取液的涂膜,因此0.5%的丁香提取液可以较好的提高HTCC涂膜的保鲜效果,有利于蓝莓的贮藏。展开更多
Narrow spectral response,low charge separation efficiency and slow water oxidation kinetics of TiO_(2)limit its application in photoelectrochemical and photocatalytic water splitting.Herein,a promising organic/inorgan...Narrow spectral response,low charge separation efficiency and slow water oxidation kinetics of TiO_(2)limit its application in photoelectrochemical and photocatalytic water splitting.Herein,a promising organic/inorganic composite catalyst Ag/PANI/3DOMM‐TiO_(2–x)with a three‐dimensional ordered macro‐and meso‐porous(3DO MM)structure,oxygen vacancy and Ti^(3+)defects,heterojunction formation and noble metal Ag was designed based on the Z‐scheme mechanism and successfully prepared.The Ag/PANI/3DOMM‐TiO_(2–x)ternary catalyst exhibited enhanced hydrogen production activity in both photocatalytic and photoelectrochemical water splitting.The photocatalytic hydrogen production rate is 420.90μmol g^(–1)h^(–1),which are 19.80 times and 2.06 times higher than the commercial P25 and 3DOMM‐TiO_(2),respectively.In the photoelectrochemical tests,the Ag/PANI/3DOMM‐TiO_(2–x)photoelectrode shows enhanced separation and transfer of carriers with a high current density of 1.55 mA cm^(–2)at equilibrium potential of 1.23 V under simulated AM 1.5 G illumination,which is approximately 5 times greater than the 3DOMM‐TiO_(2).The present work has demonstrated the promising potential of organic/inorganic Z‐scheme photocatalyst in driving water splitting for hydrogen production.展开更多
文摘为提高壳聚糖季铵盐(quaternary ammonium salt of chitosan,HTCC)涂膜剂对蓝莓的保鲜作用,在HTCC溶液中分别添加0.5%的丁香和甘草提取液并对蓝莓进行涂膜,研究在4℃下这两种复合涂膜对蓝莓的保鲜效果。结果表明:与单独HTCC涂膜相比,两种复合涂膜均可以降低蓝莓的失重率,减少V_C含量和硬度的降低,减缓花青素的变化,具有较好的保鲜效果。且添加丁香提取液的涂膜的保鲜效果要好于添加甘草提取液的涂膜,因此0.5%的丁香提取液可以较好的提高HTCC涂膜的保鲜效果,有利于蓝莓的贮藏。
文摘Narrow spectral response,low charge separation efficiency and slow water oxidation kinetics of TiO_(2)limit its application in photoelectrochemical and photocatalytic water splitting.Herein,a promising organic/inorganic composite catalyst Ag/PANI/3DOMM‐TiO_(2–x)with a three‐dimensional ordered macro‐and meso‐porous(3DO MM)structure,oxygen vacancy and Ti^(3+)defects,heterojunction formation and noble metal Ag was designed based on the Z‐scheme mechanism and successfully prepared.The Ag/PANI/3DOMM‐TiO_(2–x)ternary catalyst exhibited enhanced hydrogen production activity in both photocatalytic and photoelectrochemical water splitting.The photocatalytic hydrogen production rate is 420.90μmol g^(–1)h^(–1),which are 19.80 times and 2.06 times higher than the commercial P25 and 3DOMM‐TiO_(2),respectively.In the photoelectrochemical tests,the Ag/PANI/3DOMM‐TiO_(2–x)photoelectrode shows enhanced separation and transfer of carriers with a high current density of 1.55 mA cm^(–2)at equilibrium potential of 1.23 V under simulated AM 1.5 G illumination,which is approximately 5 times greater than the 3DOMM‐TiO_(2).The present work has demonstrated the promising potential of organic/inorganic Z‐scheme photocatalyst in driving water splitting for hydrogen production.
