Search

The vacuum tube method has been used for the construction of nondestructive and physically stable graphitic carbon nitride/graphene nanoplatelet composites and their photocatalytic behavior studied by measuring different photoactivities, such as photocurrent, photoluminescence, and the photodegradation of tetracycline hydrochloride under visible‐light irradiation. The formation of a heterojunction was confirmed by XRD, TEM, SEM, FTIR, XPS, and Raman spectroscopy. The results of this research indicate that the vacuum tube method is a facile, economic, and environmentally friendly approach to the preparation of composites. An ion‐trapping experiment indicated that, under visible light, the most effective photocatalyst generated the superoxide radical (O2·–) and holes (h+) to achieve the complete degradation of tetracycline hydrochloride. [ABSTRACT FROM AUTHOR]

Abstract: This study investigated parental psychological control of adolescents when construed as disrespect of individuality. First, 120 adolescents from 5 cultures were interviewed and asked to identify specific parental behaviors that communicated to them that they were disrespected as individuals. The interview data were coded and 8 new survey items were constructed to reflect key content. These items were then administered to 2100 adolescents in the same cultures along with a traditional measure of psychological control (PCS). Confirmatory factor analyses indicated that model fit was better when the two scales were kept separate, across culture and sex of parent. In structural equation models, the new scale – labeled Psychological Control – Disrespect – accounted for all and more of the variance in youth depression and antisocial behavior than the PCS did. The discussion centers on the validation the study makes of the construct and offers several suggestions for future research. [Copyright &y& Elsevier]

Co2+‐ZIF‐67 metal‐organic framework nanoparticles (NMOFs), act as nanozymes catalyzing diverse processes, including peroxidase, oxidase, and catalase activities. Peroxidase activities are reflected by the nanozyme‐catalyzed H2O2 oxidation of dopamine to aminochrome, the H2O2 oxidation of NADH to NAD+, the H2O2‐catalyzed generation of chemiluminescence through oxidation of luminol, and the H2O2‐mediated oxidation of aniline to polyaniline. Oxidase activities of the nanozyme are demonstrated by the Co2+‐ZIF‐67 NMOFs catalyzed aerobic oxidation of dopamine to aminochrome and of NADH to NAD+, and catalase activities of the nanozyme are reflected by the catalytic decomposition of H2O2. Moreover, the Co2+‐ZIF‐67 catalyzed oxidation of aniline to polyaniline (PAN) by H2O2 is accompanied by the coating of NMOFs with PAN to yield a Co2+‐ZIF‐67/PAN hybrid material. Coating the particles in the presence of guest substrates leads to molecular imprinted PAN matrices revealing enhanced ZIF‐67 catalyzed transformations as compared to non‐imprinted PAN matrices. This is demonstrated by imprinting of 2,2′‐azinobis(3‐ethylbenzothiazoline‐6‐sulfonic acid), ABTS2−, in the PAN coating and the 3.3‐fold enhanced catalyzed oxidation of ABTS2− by H2O2, as compared to the non‐imprinted PAN hybrid composite. Moreover, imprinting of L‐/D‐DOPA in the PAN coating of Co2+‐ZIF‐67 NMOFs leads to chiro‐selective H2O2‐guided oxidation of L‐/D‐DOPA to dopachrome by the NMOFs/PAN composite. [ABSTRACT FROM AUTHOR]