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您的检索式：作者名="Xiankai Wan"
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| 1 | Photodegradation of Orange Ⅱ using waste paper sludge-derived heterogeneous catalyst in the presence of oxalate under ultraviolet light emitting diode irradiation显示文摘A waste paper sludge-derived heterogeneous catalyst(WPS-Fe-350) was synthesized via a facile method and successfully applied for the degradation of Orange Ⅱ in the presence of oxalic acid under the illumination of ultraviolet light emitting diode(UV-LED) Powder X-ray diffraction,Fourier-transform infrared spectroscopy,scanning electronic microscopy and N2 sorption isotherm analysis indicated the formation of α-Fe2O3 in the mesoporous nanocomposite.The degradation test showed that WPS-Fe-350 exhibited rapid Orange Ⅱ(OⅡ) degradation and mineralization in the presence of oxalic acid under the illumination of UV-LED.The effects of p H,oxalic acid concentration and dosage of the catalyst on the degradation of OⅡ were evaluated,respectively.Under the optimal conditions(1 g/L catalyst dosage,2 mmol/L oxalic acid and p H 3.0),the degradation percentage for a solution containing 30 mg/L OⅡ reached 83.4% under illumination by UV-LED for 80 min.Moreover,five cyclic tests for OⅡ degradation suggested that WPS-Fe-350 exhibited excellent stability of catalytic activity.Hence,this study provides an alternative environmentally friendly way to reuse waste paper sludge and an effective and economically viable method for degradation of azo dyes and other refractory organic pollutants in water. | Guoqiang Zhou Jinyi Guo Guowang Zhou Xiankai Wan Huixiang Shi | 2016 | Journal of Environmental Sciences2016，28，9： | 1 |
| 2 | Realization of quantum ground state in an optomechanical crystal cavity显示文摘Ground-state cooling of the mechanical degree of freedom is a fundamental requirement for quantum state transfer between relevant optical and mechanical systems.Here,we fabricate optomechanical crystal cavities with co-localized mechanical and optical modes on a monolithic chip.The typical linewidth of the optical modes at telecom wavelength is as low as 0.95 GHz,and the mechanical resonant frequency is around 5 GHz,which means the optomechanical system can be operated in the resolved sideband regime.With the statistics of the asymmetry in the scattering rates of red and blue detuning driving processes,we initialize and characterize the mechanical system in its quantum ground-state of motion,with a mean thermal phonon occupancy nth=0.018±0.0034,corresponding to a mode temperature of 57.3 m K.It is a general platform for quantum state transfer between relevant optical and mechanical systems,as well as the quantum entanglement between these systems. | Yu Wang Zhi-Peng Shi Hong-Yi Kuang Xiang Xi Shuai Wan Zhen Shen Pi-Yu Wang Guan-Ting Xu Xiankai Sun Chang-Ling Zou Guang-Can Guo Chun-Hua Dong | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，12： | 0 |
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