检索结果-南通市图书馆

Efficient solar-driven CO_(2)-to-fuel conversion via Ni/MgAlO_(x)@SiO_(2)nanocomposites at low temperature

Fundamental Research 2024年第1期4卷 131-139页

作者： Xianglei Liu Yueyue Ling Chen Sun Hang Shi Hangbin Zheng Chao Song Ke Gao Chunzhuo Dang Nan Sun Yimin Xuan Yulong Ding School of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Birmingham Centre for Energy Storage School of Chemical EngineeringUniversity of BirminghamBirmingham B152TTUnited Kingdom

solar-driven CO_(2)-to-fuel conversion assisted by another major greenhouse gas CH_(4)is promising to concurrently tackle energy shortage and global warming problems.However,current techniques still suffer from drawbacks of low efficiency,poor stability,and low selectivity.Here,a novel nanocomposite composed of interconnected Ni/MgAlOx nanoflakes grown on SiO_(2)particles with excellent spatial confinement of active sites is proposed for direct solar-driven CO_(2)-to-fuel conversion.An ultrahigh light-to-fuel efficiency up to 35.7%,high production rates of H_(2)(136.6 mmol min^(-1)g^(-1))and CO(148.2 mmol min^(-1)g^(-1)),excellent selectivity(H_(2)/CO ratio of 0.92),and good stability are reported simultaneously.These outstanding performances are attributed to strong metal-support interactions,improved CO_(2)absorption and activation,and decreased apparent activation energy under direct light illumination.MgAlO_(x)@SiO_(2)support helps to lower the activation energy of CH^(*) oxidation to CHO^(*) and improve the dissociation of CH_(4)to CH_(3)^(*) as confirmed by DFT calculations.Moreover,the lattice oxygen of MgAlO_(x) participates in the reaction and contributes to the removal of carbon deposition.This work provides promising routes for the conversion of greenhouse gasses into industrially valuable syngas with high efficiency,high selectivity,and benign sustainability.

关键词： solar fuel CO_(2)reduction Dry reforming of methane Photothermocatalysis Stability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances of photothermal chemistry in photocatalysis,thermocatalysis,and synergetic photothermocatalysis for solar-to-fuel generation

引用

Nano Research 2022年第12期15卷 9985-10005页

作者： Minmin Gao Tianxi Zhang Ghim Wei Ho Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore117583Singapore Department of Chemical and Biomolecular Engineering National University of Singapore4 Engineering Drive 4Singapore117585Singapore Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)3 Research LinkSingapore117602Singapore

The urgency of reducing pollutants and greenhouse gas emissions while maintaining fuel supply for the development of society remains one of the greatest challenges.solar energy,a clean and sustainable energy resource,can be converted into fuels through solar-driven catalysis,and this provides an attractive solution for future energy demand.The current development of photothermal catalysis(PTC)based on the integration of solar thermal and photochemical contributions is becoming increasingly popular for full spectrum utilization.The combination of the thermochemical and photochemical processes synergistically drives the catalytic reactions efficiently under relatively mild conditions.In this review,the mechanisms of PTC are classified based on driving forces and the benefits of photothermal effects in different PTC reactions are discussed.Subsequently,the techniques for differentiating and quantifying the various effects of PTC,including experimental designs,thermometry characterization techniques,and computational studies,are summarized.Then,the major determinant properties and architectural designs for efficient photothermal catalysts are offered.Moreover,applications for fuel generation through water splitting and carbon dioxide reduction are reviewed.Finally,the current challenges and future directions of PTC are presented.This article aims to provide a comprehensive review of the current advances in PTC along with a guide for understanding the mechanisms and rational material designs to pursue solar fuel that would diversify and increase the sustainability of our energy supply.

关键词： photothermal chemistry photocatalysis thermocatalysis water splitting CO_(2)conversion solar fuel

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Air to fuel:Direct capture of CO_(2)from air and in-situ solar-driven conversion into syngas via Ni_(x)/NaA nanomaterials

引用

Nano Research 2023年第8期16卷 10899-10912页

作者： Cheng Tian Xianglei Liu Chenxi Liu Shaoyang Li Qiyan Li Nan Sun Ke Gao Zhixing Jiang Kun Chang Yimin Xuan School of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Thermal Management and Energy Utilization of Aviation Vehicles Ministry of Industry and Information TechnologyNanjing 210016China School of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Ever-increasing CO_(2)emissions and atmospheric concentration mainly due to the burning of traditional fossil fuels have caused severe global warming and climate change problems.Inspired by nature’s carbon cycle,we propose a novel dual functional catalyst-sorbent to tackle energy and environmental problems simultaneously via direct capture of CO_(2)from air and in-situ solar-driven conversion into clean fuels.Economically and operationally advantageous,the planned coupling reaction can be carried out in a single reactor without the requirement for an extra trapping device.The great CO_(2)capture and conversion performance in an integrated step is shown by the CO_(2)capacity of up to 0.38 mmol·g^(−1)for adsorption from 500 ppm CO_(2)at 25℃and the CO_(2)conversion rate of up to 95%.Importantly,the catalyst-sorbent is constituted of a nonprecious metal Ni catalyst and an inexpensive commercially available CO_(2)sorbent,viz,zeolite NaA.Furthermore,this designed dual functional material also exhibits outstanding stability performance.This work offers a novel pathway of capturing CO_(2)in the air at room temperature and converting it by CH4 into fuel,contributing to the new era of carbon neutrality.

关键词： direct CO_(2)capture solar fuel photothermocatalytic dry reforming

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

一种新型太阳能热电化学耦合甲烷重整制氢脱碳与太阳能储能方法

引用

Science Bulletin 2024年第8期69卷 1109-1121页

作者：郭轲刘明恺王彬娄佳慧郝勇裴刚金红光 Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230026China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Wu Zhonghua College North China Electric Power UniversityBeijing 102206China

Hydrogen is widely regarded as a sustainable energy carrier with tremendous potential for low-carbon energy transition.solar photovoltaic-driven water electrolysis(PV-E)is a clean and sustainable approach of hydrogen production,but with major barriers of high hydrogen production costs and limited capacity.Steam methane reforming(SMR),the state-of-the-art means of hydrogen production,has yet to overcome key obstacles of high reaction temperature and CO_(2)emission for sustainability.This work proposes a solar thermo-electrochemical SMR approach,in which solar-driven mid/low-temperature SMR is combined with electrochemical H_(2)separation and in-situ CO_(2)capture.The feasibility of this method is verified experimentally,achieving an average methane conversion of 96.8%at a dramatically reduced reforming temperature of 400-500℃.The underlying mechanisms of this method are revealed by an experimentally calibrated model,which is further employed to predict its performance for thermoelectrochemical hydrogen production.Simulation results show that a net solar-to-H_(2)efficiency of26.25%could be obtained at 500℃,which is over 11 percentage points higher than that of PV-E;the first-law thermodynamic efficiency reaches up to 63.27%correspondingly.The enhanced efficiency also leads to decreased fuel consumption and lower CO_(2)emission of the proposed solar-driven SMR system.Such complementary conversion of solar PV electricity,solar thermal energy,and low-carbon fuel provides a synergistic and efficient means of sustainable H_(2)production with potentially long-term solar energy storage on a vast scale.

关键词： Hydrogen solar fuel Thermo-electrochemical conversion Decarbonization solar energy storage

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Energy,Exergy,and Exergoeconomic Analysis of solar-Driven Solid Oxide Electrolyzer System Integrated with Waste Heat Recovery for Syngas Production

引用

Journal of Thermal Science 2023年第1期32卷 135-152页

作者： WANG Jiangjiang YAO Wenqi CUI Zhiheng GAO Yuefen Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology North China Electric Power UniversityBaoding 071003China

Syngas fuel generated by solar energy integrating with fuel cell technology is one of the promising methods for future green energy solutions to carbon neutrality.This paper designs a novel solar-driven solid oxide electrolyzer system integrated with waste heat for syngas production.solar photovoltaic and parabolic trough collecter together drive the solid oxide electrolysis cell to improve system efficiency.The thermodynamic models of components are established,and the energy,exergy,and exergoeconomic analysis are conducted to evaluate the system’s performance.Under the design work conditions,the solar photovoltaic accounts for 88.46%of total exergy destruction caused by its less conversion efficiency.The exergoeconomic analysis indicates that the fuel cell component has a high exergoeconomic factor of 89.56%due to the large capital investment cost.The impacts of key parameters such as current density,operating temperature,pressure and mole fraction on system performances are discussed.The results demonstrate that the optimal energy and exergy efficiencies are achieved at 19.04%and 19.90%when the temperature,pressure,and molar fraction of H_(2)O are 1223.15 K,0.1 MPa,and 50%,respectively.

关键词： solid oxide electrolysis cell(SOEC) solar fuel thermodynamic analysis exergoeconomic analysis waste heat recovery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of Bi-dopant and co-catalysts upon hole surface trapping on La_(2)Ti_(2)O_(7) nanosheet photocatalysts in overall solar water splitting

引用

Nano Research 2022年第1期15卷 438-445页

作者： Xiaoyan Cai Liang Mao Mamoru Fujitsuka Tetsuro Majima Sujan Kasani Nianqiang Wu Junying Zhang School of Materials Science and Physics Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and EquipmentChina University of Mining and TechnologyXuzhou 221116China School of Physics Beihang UniversityBeijing 100191China The Institute of Scientific and Industrial Research(SANKEN) Osaka UniversityMihogaoka 8-1IbarakiOsaka 567-0047Japan Department of Mechanical and Aerospace Engineering West Virginia UniversityMorgantownWV 26506-6106USA Department of Chemical Engineering University of Massachusetts AmherstAmherstMA 01003-9303USA

Pristine and Bi-doped lanthanum titanium oxide(La_(2)Ti_(2)O_(7))nanosheets have been synthesized as photocatalysts for overall solar water splitting.The surface hole trap is a critical factor that limits the photocatalytic activity of pristine La_(2)Ti_(2)O_(7)-Deposition of cobalt phosphate(Co-Pi)and platinum(Pt)nanoparticles on La_(2)Ti_(2)O_(7) cannot remove the surface traps although they are essential for enabling the oxygen and hydrogen evolution reactions.It is interesting that doping bismuth(Bi)into La_(2)Ti_(2)O_(7) nanosheets has eliminated the surface traps due to surface enrichment of Bi.The Co-Pi/Bi-La_(2)Ti_(2)O_(7)/Pt nanosheets exhibit increasing photocatalytic activity toward overall water splitting with increasing the Bi-dopant level up to 5 at.%.Further increasing the Bi-dopant level leads to the formation of localized states above the valence band,leading to the lifetime reduction of photogenerated charge-carriers,and jeopardizing the photocatalytic activity.This work proposes an effective strategy to address the surface trapping and surface catalysis issues in the nanostructured metal oxide photocatalysts.

关键词： photocatalyst water splitting surface trap co-catalyst solar fuel

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Perovskite-type lanthanum ferrite based photocatalysts:Preparation,properties,and applications

引用

Journal of Energy Chemistry 2022年第3期31卷 314-338,I0009页

作者： Muhammad Humayun Habib Ullah Muhammad Usman Aziz Habibi-Yangjeh Asif Ali Tahir Chundong Wang Wei Luo School of Optical and Electronic Information Wuhan National Laboratory for OptoelectronicsEngineering Research Center for Functional Ceramics of the Ministry of EducationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Environment and Sustainability Institute University of ExeterPenryn TR109FECornwallUnited Kingdom Center of Research Excellence in Nanotechnology King Fahd University of Petroleum and Minerals(KFUPM)Dhahran 31261Saudi Arabia Department of Chemistry Faculty of ScienceUniversity of Mohaghegh ArdabiliArdabili P.O.Box 179ArdabilIran

Clean energy and a sustainable environment are grand challenges that the world is facing which can be addressed by converting solar energy into transportable and storable fuels(chemical fuel).The main scientific and technological challenges for efficient solar energy conversion,energy storage,and environmental applications are the stability,durability,and performance of low-cost functional materials.Among different nanomaterials,perovskite type LaFeO_(3)has been extensively investigated as a photocatalyst due to its abundance,high stability,compositional and structural fexibility,high electrocatalytic activity,efficient sunlight absorption,and tunable band gap and band edges.Hence,it is urgent to write a comprehensive review to highlight the trend,challenges,and prospects of LaFeO_(3)in the field of photocatalytic solar energy conversion and environment purification.This critical review summarizes the history and basic principles of photocatalysis.Further,it reviews in detail the LaFeO_(3),applications,shortcomings,and activity enhancement strategies including the design of nanostructures,elemental doping,and heterojunctions construction such as Type-I,Type-II,Z-Type,and uncommon heterojunctions.Besides,the optical and electronic properties,charge carriers separation,electron transport phenomenon and alignment of the band gaps in LaFeO_(3)-based heterostructures are comprehensively discussed.

关键词： Perovskite-type LaFeO_(3) solar fuel Photocatalysis Doping Heterostructures

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Progress and Prospect of Photothermal Catalysis

引用

Chemical Research in Chinese Universities 2022年第3期38卷 723-734页

作者： DU Shihao BIAN Xuanang ZHAO Yunxuan SHI Run ZHANG Tierui Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100090P.R.China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100149P.R.China

Recently,solar-driven synthesis due to its energy-saving and environmentally friendly advantages has attracted more and more attention,whereas the low solar-to-chemical conversion efficiency significantly hindered its development.New effective options that fully utilize full-band sunlight are urgently needed.Novel photothermal catalysis combined with the advantages of photocatalysis and thermalcatalysis can improve the utilization efficiency of solar energy and lower the reaction temperature,thus becoming a promising technology.This review divides photothermal catalysis into photo-assisted thermalcatalysis,thermal-assisted photocatalysis,and photothermal synergistic catalysis.Furthermore,the catalytic mechanical understanding of how photothermal affects the catalytic property of different applications(e.g.,water splitting,CO_(2)/N_(2) reduction,and environmental treatment)was also summed up and discussed in detail.The discussion ends with unsolved challenges in photothermal catalysis,particularly emphasizing the effect of temperature or sunlight on catalytic performance.

关键词： Photothermal catalysis Photocatalysis solar fuel Environment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

MATERIALS FOR PHOTOCATALYTIC solar fuel

MATERIALS FOR PHOTOCATALYTIC SOLAR FUEL

引用

中国化学会第29届学术年会

作者： Zhigang Zou Ecomaterials and Renewable Energy Research Center （ERERC） Nanjing University

The concept of using solar energy to solve the global energy and environmental problems are has been intensified from the standpoints to a technological assessment, since the energy and environmental issues in a global level are important themes tackled in the 21st century. The mass consumption of fossil fuels after 20th century has produced negative properties in future such as the exhaustion of petroleum resources and the contamination of environment. In order to continue the global human life, it is very important to exploit new clean energy resources instead of fossil fuels without heavy burden to energy and environment. Exactly the solar energy conversion satisfies above conditions. In this talk, we will introduce advance and development of the solar energy conversion research in our group and the relative research project.

关键词： Photocatalys solar fuel solar energy conversion

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effects of electrochemical synthetic conditions on surface property and photocatalytic performance of copper and iron-mixed p-type oxide electrodes

引用

Journal of Materials Science & Technology 2018年第9期34卷 1503-1510页

作者： Sun Hee Yoon Dong Suk Han Unseock Kang Seung Yo Choi Wubulikasimu Yiming Ahmed Abdel-Wahab Hyunwoong Park Chemical Engineering Program Texas A&M University at Qatar School of Energy Engineering Kyungpook National University Department of Mechanical Engineering Texas A&M University at Qatar

Earth-abundant copper and iron-mixed oxide（CuO/CuFeO_2; CFO） film electrodes are synthesized using an electrochemical deposition（ED） technique at two different ED potentials（-0.36 and-0.66 V vs saturated calomel electrode（SCE）; denoted as ED-1 and ED-2, respectively）. Then, their surface morphologies are compared, and the photo（electro）catalytic activities for the reduction of Cr（VI） are examined in aqueous solutions at pH 7 under simulated sunlight（AM 1.5 G; 100 mW cm（-2））. The degree of the electrical potential applied to the ED process significantly affects the thickness of the synthesized electrode film and the intensity ratio of the diffraction peaks of CuO（111） and CuFeO_2（012）. A 200 μm thick ED-2 sample with a distinct stacking of CuO on CuFeO_2 exhibits a larger broadband absorption spectrum than the 50-μm thick ED-1 with less separate stacking. Furthermore, the ED-2 sample has a higher intensity ratio of the diffraction peaks of CuO（111） and CuFe02（012） than ED-1. As-synthesized ED-2 samples produce larger photocurrents, leading to faster Cr（VI） reduction on the surface under given potential bias（-0.5 V vs SCE）or bias-free conditions. The energy levels（i.e., flatband potential） for the two samples are almost the same（only 10 mV difference）, presumably supposing that the enhanced photoactivity of the ED-2 sample for Cr（VI） reduction is due to the facilitated charge transfer. The time-resolved photoluminescence emission spectra analysis reveal that the lifetime（r） of the charge carriers in the ED-1 sample is 0.103 ns, which decreases to 0.0876 ns in the ED-2. The ED-2 sample synthesized at a high negative potential is expected to contribute greatly to the application of other solar-to-fuel energy conversion fields as a highly efficient electrode material.

关键词： Artificial photosynthesis solar fuel Delafossites Morphology Charge transfer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：