Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or ...Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or diseased coronary arteries.[1,2]The condition is typically triggered by various allergens including medications(particularly contrast media),environmental factors,or food exposures,with symptom onset usually occurring within one hour of exposure.展开更多
Direct seawater electrolysis technology shows great potential,but chloride ions corrode the electrodes and cause competitive reactions,which limits its application.In recent years,metal phosphides with excellent intri...Direct seawater electrolysis technology shows great potential,but chloride ions corrode the electrodes and cause competitive reactions,which limits its application.In recent years,metal phosphides with excellent intrinsic catalytic activity have attracted much attention as electrocatalysts for the seawater splitting process,especially as efficient oxygen evolution reaction(OER)catalysts.This paper reviews the preparation methods for phosphide-based catalysts,the mechanism involved and related parameters for the OER.Innovative strategies for designing effective anode electrocatalysts to address the challenges are summarized.Furthermore,we outline a general strategy for enhancing the activity,selectivity,and stability of metal phosphides for the OER in seawater.Finally,future prospects for the development of metal phosphide catalysts are proposed and discussed.展开更多
Noble-metal-based catalysts are the most used nanomaterials to carry out electrochemical reactions,which are commonly applied in fuel cells.This kind of catalyst is expensive and it is worth mentioning that noble meta...Noble-metal-based catalysts are the most used nanomaterials to carry out electrochemical reactions,which are commonly applied in fuel cells.This kind of catalyst is expensive and it is worth mentioning that noble metals are scarce.So,nanocatalysts based on cheaper metals,such as Ag and Cu,are highly desired.Here,we report the natural arrangement of different Ag_(x)Cu_(y)nanostructures through oleylamine reduction.Firstly,an experimental study was carried out in order to study the crystallographic structure,size,and shape of each synthesized nanostructure.The samples were fully characterized via powder X-ray diffraction,while scanning-transmission electron microscopy with a high-angle annular dark-field(HAADF)was applied to investigate the morphological features.Interestingly,the HAADF images of the AgCu NPs mostly show a Janus-type configuration,instead of a core-shell architecture,which is the most stable atomic arrangement.Given this,we subsequently performed classical molecular dynamics simulations under the NVT canonical ensemble to further deepen our study.The theoretical results pointed out that the nanostructure with a core-shell morphology is the one with the lowest energy.However,it also indicates an energy decrease in the Janus configuration,as long as the NP size increases.Therefore,for nanostructures with a large number of atoms,this could lead to a strong competition between Janus and core-shell arrangement.Finally,considering the AgCu NP size,it is worth noting that the theoretical data supports the experimental results,making these systems interesting not only because of their properties but also due to the relatively easy synthesis procedure.展开更多
基金supported by the National Key Research and Development Program of China(No.2022YFB380-7300)the National Natural Science Foundation of China(No.12471455)+2 种基金the Clinical Cohort Construction Program of Peking University Third Hospital(BYSYDL2022005)the Key Clinical Projects of Peking University Third Hospital(BYSYZD2023006)the Innovation&Transfer Fund of Peking University Third Hospital(BYSYZHKC2023-109).
文摘Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or diseased coronary arteries.[1,2]The condition is typically triggered by various allergens including medications(particularly contrast media),environmental factors,or food exposures,with symptom onset usually occurring within one hour of exposure.
基金financially supported by the National Natural Science Foundation of China(52072197,52174283,and 22301156)the Qingdao Natural Science Foundation(24-4-4-zrjj-16-jch)+4 种基金the Natural Science Foundation of Shandong Province(ZR2021QE165)the Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(2019KJC004)the Major Scientific and Technological Innovation Project(2019JZZY020405)the Shandong Province“Double-Hundred Talent Plan”(WST2020003)the Taishan Scholar Young Talent Program(tsqn201909114).
文摘Direct seawater electrolysis technology shows great potential,but chloride ions corrode the electrodes and cause competitive reactions,which limits its application.In recent years,metal phosphides with excellent intrinsic catalytic activity have attracted much attention as electrocatalysts for the seawater splitting process,especially as efficient oxygen evolution reaction(OER)catalysts.This paper reviews the preparation methods for phosphide-based catalysts,the mechanism involved and related parameters for the OER.Innovative strategies for designing effective anode electrocatalysts to address the challenges are summarized.Furthermore,we outline a general strategy for enhancing the activity,selectivity,and stability of metal phosphides for the OER in seawater.Finally,future prospects for the development of metal phosphide catalysts are proposed and discussed.
基金FONDECYT(grants 3170240 and 1200782)Basal Program for Centers of Excellence,Grant AFB180001 CEDENNA,CONICYT+1 种基金DICYT project 041931BRUSA1799 Vridei 041931SB_GO。
文摘Noble-metal-based catalysts are the most used nanomaterials to carry out electrochemical reactions,which are commonly applied in fuel cells.This kind of catalyst is expensive and it is worth mentioning that noble metals are scarce.So,nanocatalysts based on cheaper metals,such as Ag and Cu,are highly desired.Here,we report the natural arrangement of different Ag_(x)Cu_(y)nanostructures through oleylamine reduction.Firstly,an experimental study was carried out in order to study the crystallographic structure,size,and shape of each synthesized nanostructure.The samples were fully characterized via powder X-ray diffraction,while scanning-transmission electron microscopy with a high-angle annular dark-field(HAADF)was applied to investigate the morphological features.Interestingly,the HAADF images of the AgCu NPs mostly show a Janus-type configuration,instead of a core-shell architecture,which is the most stable atomic arrangement.Given this,we subsequently performed classical molecular dynamics simulations under the NVT canonical ensemble to further deepen our study.The theoretical results pointed out that the nanostructure with a core-shell morphology is the one with the lowest energy.However,it also indicates an energy decrease in the Janus configuration,as long as the NP size increases.Therefore,for nanostructures with a large number of atoms,this could lead to a strong competition between Janus and core-shell arrangement.Finally,considering the AgCu NP size,it is worth noting that the theoretical data supports the experimental results,making these systems interesting not only because of their properties but also due to the relatively easy synthesis procedure.
