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| 1 | Effects of calcination temperature on physicochemical property and activity of CuSO4/TiO2 ammonia-selective catalytic reduction catalysts显示文摘CuSO4/TiO2 catalysts with high catalytic activity and excellent resistant to SO2 and H2 O,were thought to be promising catalysts used in Selective catalytic reduction of nitrogen oxides by NH3.The performance of catalysts is largely affected by calcination temperature.Here,effects of calcination temperature on physicochemical property and catalytic activity of CuSO4/TiO2 catalysts were investigated in depth.Catalyst samples calcined at different temperatures were prepared first and then physicochemical properties of the catalyst were characterized by N2 adsorption-desorption,X-ray diffraction,thermogravimetric analysis,Raman spectra,Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,temperature-pro grammed desorption of NH3,temperature-programmed reduction of H2 and in situ diffuse reflectance infrared Fourier transform spectroscopy.Results revealed that high calcination temperature had three main effects on the catalyst.First,sintering and anatase transform into rutile with increase of calcination temperature,causing a decrement of specific surface area.Second,decomposition of CuSO4 under higher calcination temperature,resulting in disappears of Br(?)nsted acid sites(S-OH),which had an adverse effect on surface acidity.Third,CuO from the decomposition of CuSO4 changed surface reducibility of the catalyst and favored the process of NH3 oxidation to nitrogen oxides(NOx).Thus,catalytic activity of the catalyst calcined under high temperatures(≥600℃)decreased largely. | Yanke Yu Jiali Zhang Changwei Chen Chi He Jifa Miao Huirong Li Jinsheng Chen | 2020 | Journal of Environmental Sciences2020，32，5： | 6 |
| 2 | Highly efficient solution-processed organic photovoltaics enabled by improving packing behavior of organic semiconductors显示文摘Solution processability is a unique property of organic semiconductors. The compact and regular π-π stacking between molecules is paramount in the performance of organic optoelectronic devices. However, it is still a challenge to improve their stacking quality without sacrificing the solution-processability from the aspect of materials design. Here, delicately engineered additives are presented to promote the formation of ordered aggregation of conjugated molecules by regulating their nucleation and growth dynamics. Intriguingly, the long-chain BTP-eC9-4F molecules can realize ordered aggregation comparable to short-chain ones without sacrificing processability. The domain size of BTP-eC9-4F aggregation is enlarged from 24.2 to 32.2 nm in blend films.Thereby exciton diffusion and charge transport become faster, contributing to the suppression of recombination losses. As a result, a power conversion efficiency of 19.2% is achieved in D18:BTP-eC9-4F based organic photovoltaics. Our findings demonstrate a facile strategy to improve the packing quality of solution-processed organic semiconductors for high-efficiency photovoltaics and beyond photovoltaics. | Xinyue Cui Hongxiang Li Hao Lu Yuqiang Liu Guangliu Ran Rui Liu Huarui Zhang Xueqing Ma Dawei Li Yi Lin Jifa Yu Wenkai Zhang Lei Cai Yahui Liu Pei Cheng Andong Zhang Zaifei Ma Guanghao Lu Zhishan Bo | 2024 | Science China Chemistry2024，67，3： | 0 |
| 3 | Association of sensorineural hearing loss and pseudoexfoliation syndrome:a meta-analysis显示文摘Background:Previous studies that assessed the association of sensorineural hearing loss(SNHL)and pseudoexfoliation syndrome(PEX)produced contradictory results.We conducted a meta-analysis to further evaluate this relationship.Methods:Eligible studies that evaluated the association between SNHL and PEX were identified.Summary odds ratios(ORs)and 95%confidence intervals(CIs)were calculated employing random-effects models.Subgroup analysis and meta-regression were performed to assess heterogeneity by several covariates.Publication bias was tested by Begg’s funnel plot and Egger’s regression test.Results:A total of 14 eligible studies,involving 1,142 PEX patients and 9,914 controls,were included in this meta-analysis.Overall analysis showed that patients with PEX,when compared with the control group,experienced a significantly increased risk for hearing loss[OR:3.74(95%CI:2.56 to 5.47);P<0.001].Substantial heterogeneity was observed.Subgroup analysis revealed a decrease in this heterogeneity in ageand sex-matched studies and in studies that used the same definition of hearing loss.Meta-regression analysis showed that definition of hearing loss contributed to substantial heterogeneity(P=0.044).No evidence of publication bias was observed.Discussion:We found that PEX is associated with an increased risk of SNHL.The effect of PEX on the prevalence of hearing loss indicates that PEX is clearly a systemic disease with potential otological complications. | Wenbin Huang Jifa Kuang Feilan Chen Yu Fu | 2022 | Annals of Eye Science2022，，3： | 0 |
| 4 | Rational Design of Electrocatalyst with Abundant Co/MoN Heterogeneous Domains for Accelerating Hydrogen Evolution Reaction显示文摘Developing efficient and durable electrocatalysts for water splitting, which has long been regarded as one of the most promising patterns to produce green hydrogen, is of great significance but still challenging. Herein,ample Co/MoN heterogeneous domains/nitrogen-doped carbon(Co/MoN/NC) nanosheet arrays as high-performance hydrogen evolution reaction(HER) electrocatalyst via a typical nitriding-carbonization strategy are successfully prepared on nickel foam(NF), which exhibits a low overpotential of 29 m V at 10 m A cm, together with excellent durability at 20 m A cmfor 90 h in alkaline solution. Such excellent catalytic property for HER can be attributed to the generation of abundant Co/Mo N heterogeneous structures. Additionally, the high conductivity of Co/Mo N and NC also increases the charge transfer rate, further helping accelerate the reaction rate of HER. This work presents an efficient method for improving the catalytic hydrogen evolution activity in basic solution. | Yu Qiu Jinzheng Liu Mengxiao Sun Jifa Yang Junzhe Liu Xiaoyan Zhang Xuejun Liu Lixue Zhang | 2022 | Chinese Journal of Structural Chemistry2022，41，7： | 0 |
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