Several kinds of UiO-66-NH with different aggregation morphologies were prepared to verify that the morphology of the photocatalyst could influence charge transfer. That showing poor aggregation exhibits superior CO photoreduction performance, attributed to the small particle size related to the poor aggregation and to the resulting high efficiency of separation of photogenerated electrons and holes.
View Article and Find Full Text PDFIt is a promising strategy to prepare composite photocatalysts based on MOFs and semiconductors for enhancing photocatalytic reduction of carbon dioxide (CO). A family of binary composite photocatalysts () with different CdS contents have been designed and synthesized, which have been explored for photocatalytic reduction of CO. can efficiently convert CO into CO under visible light irradiation the solid-gas mode in the absence of sacrificial agents and photosensitizers.
View Article and Find Full Text PDFPhotoreduction of carbon dioxide (CO) provides an effective perspective for solving the energy crisis and environmental problems. Herein, two types of composite photocatalysts (TiO/ZIF-8) based on ZIF-8 and TiO have been designed and synthesized with the help of the grinding method and the solid-synthesis method. Both composite photocatalysts are employed for the photocatalytic reduction of CO.
View Article and Find Full Text PDFA series of polyoxometalate (POM)-based metallogels have been synthesized, which combine both the advantages of POMs and metallogels. Notably, POM-based metallogels are employed as anode materials for the first time, and the optimized sample exhibits high reversible capacity (658 mA h g-1), high rate capability, and good cycling stability.
View Article and Find Full Text PDFAim: To gain a better understanding of possible factors that may influence the decision of diabetes persons to participate in annual eye screening in an urban community setting of China.
Methods: A structured interview including questions on attendance of eye screening, knowledge and awareness of diabetic retinopathy was conducted. The presence and degree of retinopathy were assessed using two field non-mydriatic retinal photography.
Objective: To understand the perception for the use of cataract surgical services in a population of acceptors and non-acceptors of cataract surgery in urban Beijing.
Methods: From a community-based screening program a total of 158 patients with presenting visual acuity of less than 6/18 on either eye due to age-related cataract were informed about the possibility of surgical treatment. These patients were interviewed and re-examined 36 to 46 months after initial screening.
Objective: To assess the agreement between gonioscopy and ultrasound biomicroscopy (UBM) in detecting angle closure in Chinese patients with shallow anterior chamber.
Methods: An observational comparative study of the two different examination methods was conducted. Patients with normal intraocular pressure and temporal peripheral anterior chamber depth less than a quarter of corneal thickness based on slit lamp examination were included in this study from December 2007 to May 2009 in the outpatient clinic of First Hospital of Tsinghua University.
Zhongguo Dang Dai Er Ke Za Zhi
November 2010
Objective: The pathogenesis of minimal change nephrotic syndrome (MCNS) remains unclear. This study aimed to investigate the expression of interleukin-6 (IL-6) in rats with doxorubicin-induced nephropathy and its possible roles in the pathogenesis of MCNS.
Methods: Eighty-three male Wistar rats were randomly assigned into a control group (n=32) and a nephropathy group (n=51).
Zhonghua Liu Xing Bing Xue Za Zhi
December 2009
Objective: To investigate the status of visual disability and the demands for visual rehabilitation services in Beijing.
Methods: Five hundred and fifty-five persons with visual disability in Beijing from the Second National Survey on Disability of China were involved in this study. Their visual disability and demands for rehabilitation were evaluated.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao
August 2004
Objective: To investigate the progression of visual field loss and to explore the prognosis of glaucomatous optic neuropathy in patients with chronic angle-closure glaucoma (CACG) after their intraocular pressures were well controlled under 21 mmHg.
Methods: Forty-seven eyes of 29 patients in the Department of Ophthalmology in PUMC Hospital were included. All the patients had at least two separate tests of visual fields using the 24-2 program of the Humphery Visual Field Analyzer after their intraocular pressure were well controlled under 21 mmHg after sugery.