The electro-catalytic nitrogen reduction reaction(NRR)at room temperature and atmospheric pressure has great potential in NH_(3)production,but the low product yield because of the low density of active sites and slow ...The electro-catalytic nitrogen reduction reaction(NRR)at room temperature and atmospheric pressure has great potential in NH_(3)production,but the low product yield because of the low density of active sites and slow reaction kinetics greatly limits its further development.To overcome these shortcomings,a series of nano Pd_(x)Cu_(y)bimetal catalysts with adjustable Pd/Cu atomic ratios were prepared and used as electrocatalysts in the NRR.展开更多
Ever since 2005, the US' shale oil and gas production growth and effective adjustment of domestic energy consumption mix have made it possible for the country to be less dependent upon imported energy and gain ene...Ever since 2005, the US' shale oil and gas production growth and effective adjustment of domestic energy consumption mix have made it possible for the country to be less dependent upon imported energy and gain energy independence. What should we learn from it to guarantee energy supply security? This paper tried to answer the question.展开更多
Water loss rate is crucial in evaluating the efficiency of atmospheric water harvesting(AWH)materials.However,most moisture-absorbing salts and gels have fixed heat transfer rates,limiting the development of high-perf...Water loss rate is crucial in evaluating the efficiency of atmospheric water harvesting(AWH)materials.However,most moisture-absorbing salts and gels have fixed heat transfer rates,limiting the development of high-performance AWH materials.Herein,an anisotropic PEG/CS/MF nanocomposite(APCM)with adjustable thermal transfer efficiency is presented.APCM was synthesized using polyethylene glycol(PEG),melamine foam(MF),and chitosan(CS)solution through a freeze orientation method.The resulting material exhibits a stable oriented laminated structure formed by hydrogen bonding between PEG,CS,and MF.This unique structure imparts excellent mechanical properties.APCM’s large lamellar gaps and pore diameters enable rapid absorption of atmospheric water molecules at low temperatures without leakage(61.79 kg m^(−3)).The compressible nature of APCM allows for efficient heat transfer at high temperatures,and the release of 80%of absorbed water within 15 min.In a proof-of-concept demonstration using a custom-built AWH device,each cubic meter of APCM achieved three AWH cycles within 24 h,producing over 185 kg of water.Therefore,this innovative design offers a promising solution for enhancing the efficiency of AWH,potentially addressing water scarcity issues in various regions.展开更多
文摘The electro-catalytic nitrogen reduction reaction(NRR)at room temperature and atmospheric pressure has great potential in NH_(3)production,but the low product yield because of the low density of active sites and slow reaction kinetics greatly limits its further development.To overcome these shortcomings,a series of nano Pd_(x)Cu_(y)bimetal catalysts with adjustable Pd/Cu atomic ratios were prepared and used as electrocatalysts in the NRR.
文摘Ever since 2005, the US' shale oil and gas production growth and effective adjustment of domestic energy consumption mix have made it possible for the country to be less dependent upon imported energy and gain energy independence. What should we learn from it to guarantee energy supply security? This paper tried to answer the question.
基金Colleges and Universities Science Foundation of Anhui Province (2022AH050908)Anhui Agricultural University Introduction of High-level Talent Funds(RC362202)+1 种基金University Synergy Innovation Program of Anhui Province(GXXT-2023-037)Anhui Province Rural Revitalization Collaborative Technology Service Center Construction Project。
文摘Water loss rate is crucial in evaluating the efficiency of atmospheric water harvesting(AWH)materials.However,most moisture-absorbing salts and gels have fixed heat transfer rates,limiting the development of high-performance AWH materials.Herein,an anisotropic PEG/CS/MF nanocomposite(APCM)with adjustable thermal transfer efficiency is presented.APCM was synthesized using polyethylene glycol(PEG),melamine foam(MF),and chitosan(CS)solution through a freeze orientation method.The resulting material exhibits a stable oriented laminated structure formed by hydrogen bonding between PEG,CS,and MF.This unique structure imparts excellent mechanical properties.APCM’s large lamellar gaps and pore diameters enable rapid absorption of atmospheric water molecules at low temperatures without leakage(61.79 kg m^(−3)).The compressible nature of APCM allows for efficient heat transfer at high temperatures,and the release of 80%of absorbed water within 15 min.In a proof-of-concept demonstration using a custom-built AWH device,each cubic meter of APCM achieved three AWH cycles within 24 h,producing over 185 kg of water.Therefore,this innovative design offers a promising solution for enhancing the efficiency of AWH,potentially addressing water scarcity issues in various regions.
