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Photoheating Effects of CuS@PEI_GQDs Nanoshells under Near-Infrared Laser and Sunlight Irradiation
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2023-01-30 , DOI: 10.1021/acs.cgd.2c01274
Kang Zhang 1 , Junming Zhang 1 , Ailing Yang 1
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2023-01-30 , DOI: 10.1021/acs.cgd.2c01274
Kang Zhang 1 , Junming Zhang 1 , Ailing Yang 1
Affiliation
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CuS nanoparticles (CuS NPs) have excellent photothermal conversion effects due to their strong and wide-band light absorption. The composite of CuS NPs may enhance the light absorption and photoheating effect, and their broad applications have appealed to wide interests. In this paper, ethylene imine polymer (PEI)-linked graphene quantum dots (PEI_GQDs) were easily obtained by an ultrasonic-assisted hydrothermal approach, and CuS nanoshells (NSs) were prepared with Cu2O NSs as a template. The composite of CuS@PEI_GQDs NSs was easily obtained by self-assembly due to the electrostatic attraction between PEI_GQDs and CuS NSs. The morphology, structure, surface chemistry, and optical absorption of the prepared nanomaterials were characterized by multi-microscopic techniques. The results of high-resolution transmission electron microscope (HRTEM), X-ray diffractometer (XRD), Fourier transform infrared (FTIR), X-ray photoelectronic spectroscopy (XPS), and energy-dispersive spectrum (EDS) show that the PEI_GQDs were successfully linked on the surfaces of the CuS NSs; the FTIR analysis reveals that there is an interaction between CuS NSs and PEI_GQDs by chelation between Cu2+ and −NH2 in PEI_GQDs. The pore size distribution indicated that both the CuS NSs and CuS@PEI_GQDs NSs contained mesopores in the wall shells. The CuS@PEI_GQDs NSs displayed enhanced absorption within 190–500 and 630–1100 nm compared to the CuS NSs. The photoheating effects of CuS@PEI_GQDs NSs and CuS NSs were investigated under 808 nm laser and sunlight irradiation, and CuS@PEI_GQDs NSs presented a better photoheating effect and photothermal stability than CuS NSs. Our results provide a facile approach to fabricate other GQD-coated nanomaterials. The excellent photoheating effects of CuS@PEI_GQDs NSs are promising in photothermal conversion.
中文翻译:
CuS@PEI_GQDs纳米壳在近红外激光和太阳光照射下的光热效应
CuS 纳米粒子 (CuS NPs) 具有很强的宽带光吸收,因此具有出色的光热转换效果。CuS NPs的复合可以增强光吸收和光热效应,其广泛的应用引起了广泛的兴趣。在这篇论文中,乙烯亚胺聚合物(PEI)连接的石墨烯量子点(PEI_GQDs)很容易通过超声波辅助水热方法获得,并用Cu 2 制备了CuS纳米壳(NSs )O NS 作为模板。由于 PEI_GQDs 和 CuS NSs 之间的静电引力,CuS@PEI_GQDs NSs 的复合材料很容易通过自组装获得。通过多显微技术对制备的纳米材料的形貌、结构、表面化学和光吸收进行了表征。高分辨率透射电子显微镜(HRTEM)、X射线衍射仪(XRD)、傅里叶变换红外光谱(FTIR)、X射线光电能谱(XPS)和能量色散谱(EDS)的结果表明,PEI_GQDs是成功连接到 CuS NS 的表面;FTIR 分析表明,CuS NSs 和 PEI_GQDs 通过 Cu 2+和 −NH 2之间的螯合作用发生相互作用在 PEI_GQD 中。孔径分布表明,CuS NSs 和 CuS@PEI_GQDs NSs 的壁壳中都含有中孔。与 CuS NSs 相比,CuS@PEI_GQDs NSs 在 190-500 和 630-1100 nm 范围内显示出增强的吸收。研究了 CuS@PEI_GQDs NSs 和 CuS NSs 在 808 nm 激光和太阳光照射下的光热效应,CuS@PEI_GQDs NSs 比 CuS NSs 具有更好的光热效应和光热稳定性。我们的结果提供了一种简便的方法来制造其他 GQD 涂层纳米材料。CuS@PEI_GQDs NSs 优异的光热效应在光热转换中很有前景。
更新日期:2023-01-30
中文翻译:
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CuS@PEI_GQDs纳米壳在近红外激光和太阳光照射下的光热效应
CuS 纳米粒子 (CuS NPs) 具有很强的宽带光吸收,因此具有出色的光热转换效果。CuS NPs的复合可以增强光吸收和光热效应,其广泛的应用引起了广泛的兴趣。在这篇论文中,乙烯亚胺聚合物(PEI)连接的石墨烯量子点(PEI_GQDs)很容易通过超声波辅助水热方法获得,并用Cu 2 制备了CuS纳米壳(NSs )O NS 作为模板。由于 PEI_GQDs 和 CuS NSs 之间的静电引力,CuS@PEI_GQDs NSs 的复合材料很容易通过自组装获得。通过多显微技术对制备的纳米材料的形貌、结构、表面化学和光吸收进行了表征。高分辨率透射电子显微镜(HRTEM)、X射线衍射仪(XRD)、傅里叶变换红外光谱(FTIR)、X射线光电能谱(XPS)和能量色散谱(EDS)的结果表明,PEI_GQDs是成功连接到 CuS NS 的表面;FTIR 分析表明,CuS NSs 和 PEI_GQDs 通过 Cu 2+和 −NH 2之间的螯合作用发生相互作用在 PEI_GQD 中。孔径分布表明,CuS NSs 和 CuS@PEI_GQDs NSs 的壁壳中都含有中孔。与 CuS NSs 相比,CuS@PEI_GQDs NSs 在 190-500 和 630-1100 nm 范围内显示出增强的吸收。研究了 CuS@PEI_GQDs NSs 和 CuS NSs 在 808 nm 激光和太阳光照射下的光热效应,CuS@PEI_GQDs NSs 比 CuS NSs 具有更好的光热效应和光热稳定性。我们的结果提供了一种简便的方法来制造其他 GQD 涂层纳米材料。CuS@PEI_GQDs NSs 优异的光热效应在光热转换中很有前景。