Abstract A novel chemical reduction method was reported to prepare tunable spherical or belted morphologies of nano-selenium (Se) based on cellulose nanocrystal (CNC). The homogeneous Se nanospheres with size of about 36 nm can be found for Se-Sphere-12H by adding ascorbic acid (VC) as assisted reducing agent. The Se nanobelt with a length of about 800 nm can be observed for Se-Belt-12H through one-pot reaction of CNC with sodium selenite (Na2SeO3) under hydrothermal conditions. Moreover, Se-Belt-12H exhibited the higher crystallinity of 96.10% and maximum thermal degradation temperature (Tmax) of 479.4 °C, the highest capacitance and the smallest internal resistance.

中文翻译：

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基于纤维素纳米晶制备可调硒纳米球和纳米带的新型化学还原方法

摘要 报道了一种新的化学还原方法，以制备基于纤维素纳米晶体 (CNC) 的纳米硒 (Se) 的可调球形或带状形态。通过添加抗坏血酸 (VC) 作为辅助还原剂，可以为 Se-Sphere-12H 找到尺寸约为 36 nm 的均匀硒纳米球。在水热条件下，通过 CNC 与亚硒酸钠 (Na2SeO3) 的一锅反应，可以观察到 Se-Belt-12H 的长度约为 800 nm 的 Se 纳米带。此外，Se-Belt-12H 具有 96.10% 的较高结晶度和 479.4 °C 的最大热降解温度（Tmax）、最高的电容和最小的内阻。