Ceria (CeO₂) synthesized by cerium nitrate hexahydrate in alkaline solution under hydrothermal treatment produces a fiber structure that allows high O-P bond cleavage activity. Brunauer–Emmett–Teller (BET) analysis revealed that fiber-morphological CeO₂ with high surface area (73.9 m²/g) and pore volume (0.42 cm³/g) showed better hydrolytic activity than nanopolyhedral and cubic morphologies. The CeO₂ fiber displayed hydrolytic activity in a tris(hydroxymethyl)aminomethane (Tris) buffer; however, no reaction occurred in a phosphate buffer. From analysis by based on scanning transmission electron microscopy (STEM) and energy-dispersive X-ray spectroscopy (EDX), the phosphate group in the buffer was seen to be immediately adsorbed on the surface of CeO₂ particles; therefore, the CeO₂ catalysts could not attack the phosphoric esters as a substrate. In addition, the CeO₂ fiber showed hydrolytic activity for deoxyribonucleic acid (DNA). Moreover, enzymes loaded on the CeO₂ fiber particles retained activity levels equivalent to free-solution enzymes. It is thought that the findings of the present study regarding the properties of CeO₂ fiber will have a significant impact in the fields of not only antibacterial and antimicrobial reagents, but also biosensors and biocatalysts.

由六水合硝酸铈在碱性溶液中经水热处理合成的二氧化铈（CeO ₂）产生的纤维结构具有很高的OP键裂解活性。Brunauer–Emmett–Teller（BET）分析显示，具有高表面积（73.9 m ² / g）和孔体积（0.42 cm ³ / g）的纤维形态CeO ₂显示出比纳米多面体和立方形态更好的水解活性。首席执行官₂纤维在三（羟甲基）氨基甲烷（Tris）缓冲液中表现出水解活性；然而，在磷酸盐缓冲液中没有反应发生。通过基于扫描透射电子显微镜（STEM）和能量色散X射线光谱法（EDX）的分析，发现缓冲液中的磷酸基团立即吸附在CeO ₂颗粒的表面上。因此，CeO ₂催化剂不能侵蚀磷酸酯作为底物。另外，CeO ₂纤维表现出对脱氧核糖核酸（DNA）的水解活性。此外，负载在CeO ₂纤维颗粒上的酶保留的活性水平与自由酶相当。可以认为，关于CeO的性质的本研究的发现₂纤维不仅会对抗菌和抗菌试剂领域产生重大影响，而且还将对生物传感器和生物催化剂产生重大影响。