Anhui Jianzhu University

About: Anhui Jianzhu University is a education organization based out in Hefei, China. It is known for research contribution in the topics: Photocatalysis & Adsorption. The organization has 1843 authors who have published 1520 publications receiving 12945 citations. The organization is also known as: Anhui University of Architecture.

Rapid Construction of ZnO@ZIF-8 Heterostructures with Size-Selective Photocatalysis Properties

Abstract: To selectively remove heavy metal from dye solution, inspired by the unique pore structure of ZIF-8, we developed a synthetic strategy for rapid construction of ZnO@ZIF-8 heterostructure photocatalyst for selective reduction of Cr(VI) between Cr(VI) and methylene blue (MB). In particular, ZnO@ZIF-8 core-shell heterostructures were prepared by in situ ZIF-8 crystal growth using ZnO colloidal spheres as template and zinc source within 8-60 min. The shell of the resulting ZnO@ZIF-8 core-shell heterostructure with a uniform thickness of around 30 nm is composed of ZIF-8 crystal polyhedrons. The concentration of organic ligand 2-methylimidazole (Hmim) was found to be crucial for the formation of ZnO@ZIF-8 core-shell heterostructures. Different structures, ZnO@ZIF-8 core-shell spheres and separate ZIF-8 polyhedrons could be formed by altering Hmim concentration, which significantly influences the balance between rate of Zn(2+) release from ZnO and coordinate rate. Importantly, such ZnO@ZIF-8 core-shell heterostructures exhibit size-selective photocatalysis properties due to selective adsorption and permeation effect of ZIF-8 shell. The as-synthesized ZnO@ZIF-8 heterostructures exhibited enhanced selective reduction of Cr(VI) between Cr(VI) and MB, which may find application in the dye industry. This work not only provides a general route for rapid fabrication of such core-shell heterostructures but also illustrates a strategy for selectively enhanced photocatalysis performance by utilizing adsorption and size selectivity of ZIF-8 shell.

One-step synthesis of self-doped carbon dots with highly photoluminescence as multifunctional biosensors for detection of iron ions and pH

Abstract: The nitrogen doped carbon dots (C-dots) with highly photoluminescence (PL) are synthesized using m-aminobenzoic acid (MAC) as the only precursor by a simple, one-step hydrothermal method. The NH2 groups of MAC have been used as nitrogen source to dope C-dots. The synthesized nitrogen doped (N-doped) C-dots present an unexpectedly large quantum yield of 30.7% and possess an essentially crystalline nature and desirable functional groups. More important, the C-dots can serve as multifunctional fluorescence nanosensors to detect pH and Fe3+. The fluorescent intensity of the C-dots increases dramatically as pH increases from 2 to 10. The fluorescent paper with C-dots coated for visual detection of pH by naked eyes has been successfully prepared. Moreover, the C-dots are employed for assaying Fe3+ based on direct interactions between Fe3+ and COOH and NH2 groups of C-dots. Under the optimal condition, a linear relationship between the decreased fluorescence intensity of C-dots and the concentration of Fe3+ is established in the range from 0 to 1.6 μM. The detection limit is as low as 0.05 μM, suggesting a promising assay for Fe3+. The results reported here provide a new approach for the design of N-doped multifunctional florescent sensor.

The Effect of Work Stress on Job Burnout Among Teachers: The Mediating Role of Self-efficacy

Abstract: The psychological pressure of high strength, often cause teachers teaching dissatisfaction, absenteeism and employee turnover. The current study examined the impact of work stress on job burnout, mainly focused on confirmation of the mediator role of self-efficacy. A total of 387 middle school teachers were as participants involving in this research. Data were collected by using the Perceived Stress Scale, General Self-Efficacy Scale and Maslach Burnout Inventory-General Survey. The results revealed that both work stress and self-efficacy were significantly correlated with job burnout. Structural equation modeling indicated that self efficacy partially mediated work stress to job burnout. The final model also revealed significant both paths from work stress to job burnout through self efficacy. The findings extended prior researches and provided valuable evidence on how to promote mental health of teachers at the workplaces.

Prevalence and Psychosocial Correlates of Mental Health Outcomes Among Chinese College Students During the Coronavirus Disease (COVID-19) Pandemic

Abstract: OBJECTIVES: To investigate the prevalence and risk factors for poor mental health of Chinese university students during the Corona Virus Disease 2019 (COVID-19) pandemic METHOD: Chinese nation-wide on-line cross-sectional survey on university students, collected between February 12(th) and 17(th), 2020 Primary outcome was prevalence of clinically-relevant posttraumatic stress disorder symptoms Secondary outcomes on poor mental health included prevalence of clinically-relevant anxiety and depressive symptoms, while posttraumatic growth was considered as indicator of effective coping reaction RESULTS: Of 2,500 invited Chinese university students, 2,038 completed the survey Prevalence of clinically-relevant PTSD, anxiety, and depressive symptoms, and post traumatic growth (PTG) was 30 8, 15 5, 23 3, and 66 9% respectively Older age, knowing people who had been isolated, more ACEs, higher level of anxious attachment, and lower level of resilience all predicted primary outcome (all p < 0 01) CONCLUSIONS: A significant proportion of young adults exhibit clinically relevant posttraumatic stress disorder (PTSD), anxious or depressive symptoms, but a larger portion of individuals showed to effectively cope with COVID-19 pandemic Interventions promoting resilience should be provided, even remotely, to those subjects with specific risk factors to develop poor mental health during COVID-19 or other pandemics with social isolation