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Highly luminescent Tb3+-doped CePO4 with 1D nanostructures were prepared by a simple hydrothermal method. The obtained CePO4:Tb has a hexagonal or monoclinic structure under different synthetical process. Uniform 1D nanorods with diameters between 40 and 500 nm, and the length ranging from several hundred nanometres to several micrometres were obtained. It is easy to increase the sizes of the samples by adding some CTAB. Results of the XPS show that there is no Ce4+ in the samples because of the absence of the signal around 917 eV, which is characteristic of Ce4+. The study of the photoluminescence of Tb3+-doped CePO4 indicates that the luminescent properties of these nanophosphors are strongly dependent on their structures and morphologies. [ABSTRACT FROM AUTHOR]

Native carbonic anhydrase (CA) has been widely used in several different applications due to its catalytic function in the interconversion of carbon dioxide (CO 2 ) and carbonic acid. However, subject to its stability and recyclability, native CA often deactivates when in harsh environments, which restricts its applications in the commercial market. Maintaining the stability and high catalytic activity of CA is challenging. Immobilization provides an effective route that can improve enzymatic stability. Through the interaction of covalent bonds and van der Waals forces, water-soluble CA can be combined with various insoluble supports to form water-insoluble immobilized CA so that CA stability and utilization can be greatly improved. However, if the immobilization method or immobilization condition is not suitable, it often leads to a decrease in CA activity, reducing the application effects on CO 2 conversion. In this review, we discuss existing immobilization methods and applications of immobilized CA in the environmental field, such as the mineralization of carbon dioxide and multienzyme cascade catalysis based on CA. Additionally, prospects in current development are outlined. Because of the many outstanding and superior properties after immobilization, CA is likely to be used in a wide variety of scientific and technical areas in the future., (Copyright © 2021 Elsevier B.V. All rights reserved.)

In the title mol-ecule, C(16)H(16)N(2)O, the pyridine ring and non-H atoms of the =CH-C(=O)- unit are coplaner, the largest deviation being 0.045 (2) Å for the O atom. The dihedral angle between this plane and the benzene ring is 2.79 (2)°. The mol-ecular structure is stabilized by inter-molecular C-H⋯π and inter-actions.