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| 1 | Atomically dispersed Au_1 catalyst towards efficient electrochemical synthesis of ammonia显示文摘Tremendous efforts have been devoted to explore energy-efficient strategies of ammonia synthesis to replace Haber–Bosch process which accounts for 1.4% of the annual energy consumption. In this study,atomically dispersed Au_1 catalyst is synthesized and applied in electrochemical synthesis of ammonia under ambient conditions. A high NH_4^+ Faradaic efficiency of 11.1% achieved by our Au_1 catalyst surpasses most of reported catalysts under comparable conditions. Benefiting from efficient atom utilization, an NH_4^+ yield rate of 1,305 lg h^(-1) mg_(Au)^(-1) has been reached, which is roughly 22.5 times as high as that by supported Au nanoparticles. We also demonstrate that by employing our Au_1 catalyst, NH4+can be electrochemically produced directly from N_2 and H_2 with an energy utilization rate of 4.02 mmol kJ^(-1). Our study provides a possibility of replacing the Haber–Bosch process with environmentally benign and energy-efficient electrochemical strategies. | Xiaoqian Wang Wenyu Wang Man Qiao Geng Wu Wenxing Chen Tongwei Yuan Qian Xu Min Chen Yan Zhang Xin Wang Jing Wang Jingjie Ge Xun Hong Yafei Li Yuen Wu Yadong Li | 2018 | Science Bulletin2018，63，19： | 22 |
| 2 | Highly sensitive ethanol gas sensor based on ultrathin nanosheets assembled Bi_2WO_6 with composite phase显示文摘Bismuth tungstate(Bi2 WO6) has many intriguing properties and has been the focus of studies in a variety of fields, especially photocatalysis. However, its application in gas-sensing has been seldom reported.Here, we successfully synthesized assembled hierarchical Bi2 WO6 which consists of ultrathin nanosheets with crystalline-amorphous composite phase by a one-step hydrothermal method. X-ray diffraction(XRD), X-ray photoemission spectroscopy(XPS), field-emission scanning electron microscopy(FESEM),and high-resolution transmission electron microscopy(HRTEM) techniques were employed to characterize its composition, morphology, and microstructure. By taking advantage of its unique microstructure,phase composition, and large surface area, we show that the resulting Bi2 WO6 is capable of detecting ethanol gas with quick response(7 s) and recovery dynamic(14 s), extremely high sensitivity(Ra/Rg= 60.8@50 ppm ethanol) and selectivity. Additionally, it has excellent reproducibility and long-term stability(more than 50 d). The Bi2 WO6 outperform the existing Bi2 WO6-based and most of the other state-of-the-art sensing platforms. We not only provided one new member to the field of gas sensor,but also offered several strategies to reconstruct nanomaterials. | Tongwei Yuan Zhijun Li Wenshuang Zhang Zhenggang Xue Xiaoqian Wang Zhiheng Ma Yu Fan Jiaqiang Xu Yuen Wu | 2019 | Science Bulletin2019，64，9： | 5 |
| 3 | Distribution of biomarkers in lacustrine sediments of the Linxia Basin, NE Tibetan Plateau, NW China: Significance for climate change显示文摘 | Yongli Wang Xiaomin Fang Tongwei Zhang Yuanmao Li Yingqin Wu Daxiang He Yuan Gao Pei Meng Youxiao Wang | 2011 | Sedimentary Geology2011，，： | 1 |
| 4 | Reconstruction Paleoclimate Dased on Sporopollen Record of Re'nacuo Lake,Tibet显示文摘The sedimentary sequences since 33 ka B.P.to 10 ka B.P.have been established in the Re'nacuo-Lake,Gaize area of north Tibet,through a study of a lacustrine section.The climate since 33 ka B.P.to 10 ka B.P.may be divided into two cycle include 5 dry phases and 5 moist phases from reconstructing the paleoclimate through a study of sporopollen analysis.It mainly reflects the general regularity of global climatic change through contrasting with the pale environment in northern hemisphere.Our pollen record reveals a regional climate history similar to those from the neighboring sites,including the GISP2,the Guliya ice core and core RM in Zoige,and thus supports the notion that the Qinghai-Tibetan Plateau acts as an important link between climatic events in the North Atlantic realm and the Asian monsoon domain.The response of the Qinghai-Tibet Plateau to the global climatic change is relatively sensitive. | LI Hanshi WANG Genhou YUAN Guoli FANG Bin LUO Tongwei YANG Yongqiang | 2014 | Acta Geologica Sinica(English Edition)2014，88，4： | 0 |
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