A tunable optoelectronic nanofibrillated cellulose/CdS quantum dot film with improved transmittance and strength
A tunable optoelectronic nanofibrillated cellulose/CdS quantum dot film with improved transmittance and strength
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具有改进的透光率和强度的可调谐光电纳米原纤化纤维素/CdS量子点薄膜
DOI：
10.1007/s10570-018-1727-1
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发表时间：
2018-03
期刊：
影响因子：
5.7
通讯作者：
Shi Hai-zhen
中科院分区：
文献类型：
--
作者：
Yan Chang-yuan;Fang Zhi-qiang;Tang Ai-min;Liu Wang-yu;Liu Yuan;Shi Hai-zhen
纳米纤维(NFC)是各种新兴应用的新型生物基纳米材料的理想构建块。本研究采用原位静电吸附的方法制备了一种修饰了TEMPO修饰的硫化镉量子点的生物质基光电子材料NFC。然后对NFC/CDS量子点悬浮液进行真空过滤，制得NFC/CDS量子点复合膜。分别用透射电子显微镜和X射线衍射仪研究了NFC/CDS量子点复合材料的形貌和结晶度，并对薄膜的力学和光电性能进行了研究。结果表明，NFC/CDS量子点复合薄膜具有优异的透光率和较高的弹性模量，同时保持了NFC薄膜突出的柔韧性和优异的光学和物理性能。在550 nm处的透光率可高达95%，弹性模数高达8.1 Gpa。通过改变不同的羧基含量(CoO、−和Cd~(2+)的摩尔比为2：1)，得到了不同尺寸的均匀分散的CdS量子点，从而得到了具有定制光电效应的NiC/CDS量子点复合膜。光电流可在0.71~1.98μA范围内调节。这些结果显示了其在下一代绿色柔性电子、光催化材料和纳米光传感器等领域的巨大应用潜力。
Nanofibrillated cellulose (NFC) is an ideal building block in novel bio-based nanomaterials fabrication for various emerging applications. In this study, a biomass-based optoelectronic material of cadmium sulfide (CdS) quantum dots (QDs)-decorated TEMPO oxidized NFC was prepared by an in situ electrostatic adsorption method. The NFC/CdS QDs suspensions were then vacuum-filtrated to produce NFC/CdS QDs composite films. The morphology of the NFC/CdS QDs composites and their crystalline degree were studied by TEM and XRD measurement, respectively, and the mechanical and optoelectronic properties of the films were also investigated. The results indicated NFC/CdS QDs composite films exhibited excellent light transmittance and high elastic modulus while retaining prominent flexibility, superior optical and physical properties of pure NFC film. The light transmittance can be as high as 95% at 550 nm, and the elastic modulus reached up to 8.1 GPa. Homogeneous dispersion of CdS QDs with different size were obtained by varying carboxyl contents (molar ratio of COO−:Cd2+is 2:1), resulting in the tailored photoelectric effect of NFC/CdS QDs composite films. The photocurrent can be tuned from 0.71 to 1.98 μA. These results show great potential to extend the application of NFC in next-generation green flexible electronics, photocatalytic materials, and nanoscale photosensor.
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影响因子：
64.8
作者：
K. Lonsdale
通讯作者：
K. Lonsdale
DOI：
10.1016/j.saa.2015.07.052
发表时间：
2016-01
期刊：
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
影响因子：
--
作者：
A. Samadi‐Maybodi;M. Sadeghi-Maleki
通讯作者：
A. Samadi‐Maybodi;M. Sadeghi-Maleki
影响因子：
3.9
作者：
Dong Ruan;Qilin Huang;Lina Zhang
通讯作者：
Dong Ruan;Qilin Huang;Lina Zhang
影响因子：
8
作者：
通讯作者：
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影响因子：
13.6
作者：
Jiazhi Yang;Junwei Yu;Jun Fan;Dongping Sun;Weihua Tang;Xuejie Yang
通讯作者：
Jiazhi Yang;Junwei Yu;Jun Fan;Dongping Sun;Weihua Tang;Xuejie Yang