摘要："理解科学需要艺术,而理解艺术也需要科学"--(美)乔治·萨顿科学美不美?面对这个问题,从事自然科学的人都会异口同声地说出同一个答案--“科学很美”。但如果再接着问:科学为什么美?科学哪里美?也许,很多人就要摸一摸脑袋想一想该怎么说了。

摘要：The development of effective and low-cost catalysts for overall water splitting is essential for clean production of hydrogen from *** this paper,we report the synthesis of cobalt-vanadium（Co-V）bimetal-based catalysts for the effective water *** Co_2V_2O_7·xH_2O nanoplates containing both Co and V elements were selected as the *** the calcination under NH_3atmosphere,the Co_2VO_4and Co/VN could be obtained just by tuning the calcination *** tests indicated that the Co-V bimetal-based materials could be used as active hydrogen evolution reaction（HER）and oxygen evolution reaction（OER）catalyst by regulating their *** Co/VN showed good performance for HER with the onset potential of68 mV and can achieve a current density of 10 mA cm^（-2）at an overpotential of 92 m ***,the Co_2VO_4exhibited the obvious OER performance with overpotential of 300 mV to achieve a current density of 10 mA cm^（-2）.When the Co_2VO_4and Co/VN were used as the anode and cathode in a twoelectrode system,respectively,the cell needed a voltage of1.65 V to achieve 10 mA cm^（-2）together with good *** work would be indicative to constructing Co-V bimetalbased catalysts for the catalytic application.