Copper oxide nanowires and nanoparticles were fabricated through electrospinning followed by calcinations in different heating conditions.It was found that the solution viscosity and environment humidity had great imp...Copper oxide nanowires and nanoparticles were fabricated through electrospinning followed by calcinations in different heating conditions.It was found that the solution viscosity and environment humidity had great impact on the morphologies of precursor nanowires,and the parameters of heat treatment,including final temperature and heating rate,significantly affected the product morphologies.展开更多
Supercritical CO2appearing as bubbles in hydrothermal vents was identified in the south part of the Okinawa Trough using in situ Raman spectroscopy. Significantly, the N2peak in supercritical CO2is much larger than th...Supercritical CO2appearing as bubbles in hydrothermal vents was identified in the south part of the Okinawa Trough using in situ Raman spectroscopy. Significantly, the N2peak in supercritical CO2is much larger than those in seawater and vent fluids, indicating that supercritical CO2enriches N2from the surrounding environment. Considering that the partial pressures of CO2and N2in the Earth’s protoatmosphere were 10–20 MPa, supercritical CO2with high N2was likely the dominant CO2phase near the water-air interface in the early history of the Earth, which promoted the synthesis, pre-enrichment and preservation of amino acids and other organic matters that are essential to the origin of life.展开更多
基金The National Natural Science Foundation of China(Grant No.51171006)The Key Research Project in Science and Technology of Leshan(Grant No.12GZD066)
文摘Copper oxide nanowires and nanoparticles were fabricated through electrospinning followed by calcinations in different heating conditions.It was found that the solution viscosity and environment humidity had great impact on the morphologies of precursor nanowires,and the parameters of heat treatment,including final temperature and heating rate,significantly affected the product morphologies.
基金This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDA22050100),the National Natural Science Foundation of China(NSFC,41822604,41576104),the National Key Research and Development Program of China(2016YFC0302103)the Key Research Program of Frontier Sciences,of Chinese Academy of Sciences(QYZDB-SSW-DQC004)+2 种基金the NSFC-Shandong Joint Fund for Marine Science Research Centers(U1606401)the Young Taishan Scholars Program(tsqn201909158)the Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology(Qingdao)(MGQNLM-TD201904).Any additional data can be obtained from Xin Zhang.
文摘Supercritical CO2appearing as bubbles in hydrothermal vents was identified in the south part of the Okinawa Trough using in situ Raman spectroscopy. Significantly, the N2peak in supercritical CO2is much larger than those in seawater and vent fluids, indicating that supercritical CO2enriches N2from the surrounding environment. Considering that the partial pressures of CO2and N2in the Earth’s protoatmosphere were 10–20 MPa, supercritical CO2with high N2was likely the dominant CO2phase near the water-air interface in the early history of the Earth, which promoted the synthesis, pre-enrichment and preservation of amino acids and other organic matters that are essential to the origin of life.
