资源类型

期刊论文 165

会议视频 2

年份

2023 10

2022 15

2021 27

2020 9

2019 11

2018 11

2017 7

2016 8

2015 4

2014 6

2013 4

2012 5

2011 7

2010 7

2009 3

2008 6

2007 3

2006 4

2005 5

2004 1

展开 ︾

关键词

分解水 2

3D打印 1

Cuk矩阵变换器 1

HeNe激光器 1

Mie散射 1

N∶P比值 1

n-Si 1

三维细观模拟 1

事件定位 1

二维正交方阵码（2D-OOSC） 1

互感器 1

五模材料 1

仿真 1

传动比 1

传热强化 1

位移测量 1

信号叠加 1

信号增强 1

信噪比 1

展开 ︾

检索范围：

排序： 展示方式：

Design and analysis of dual fuel methanol-power poly-generation

Minghua WANG , Zheng LI , Weidou NI ,

《能源前沿（英文）》 2009年 第3卷 第3期   页码 341-347 doi: 10.1007/s11708-009-0023-z

摘要： A dual fuel head poly-generation flowsheet was designed based on coal gas and coke oven gas. To help clearly understand the system performance, a 1.2×10−3.2×10kg methanol and 274―496MW power poly-generation system was simulated by using the commercially available software ASPEN Plus and GT Pro. The technology scheme, the operating parameters, and the efficiency of the system were also analyzed and evaluated, which will be used for building industrial devices.

关键词： dual fuel     methanol-power poly-generation     CO2 and CH4 reforming     splitting ratio    

HTML PDF 收藏

Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

《能源前沿（英文）》 2021年 第15卷 第3期   页码 710-720 doi: 10.1007/s11708-021-0764-x

摘要： InP shows a very high efficiency for solar light to electricity conversion in solar cell and may present an expectation property in photocatalytic hydrogen evolution. However, it suffers serious corrosion in water dispersion. In this paper, it is demonstrated that the stability and activity of the InP-based catalyst are effectively enhanced by applying an anti-corrosion SnO layer and In(OH)3 transition layer, which reduces the crystal mismatch between SnO and InP and increases charge transfer. The obtained Pt/SnO/In(OH)3/InP exhibits a hydrogen production rate of 144.42 µmol/g in 3 h under visible light illumination in multi-cycle tests without remarkable decay, 123 times higher than that of naked In(OH)3/InP without any electron donor under visible irradiation.

关键词： SnO/In(OH)3/InP photocatalyst     enhanced activity and stability for water splitting     corrosion inhibition     enhancing charge transfer and decreasing crystal mismatch    

HTML PDF 收藏

Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

《能源前沿（英文）》 doi: 10.1007/s11708-023-0870-z

摘要： Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

关键词： threshold solar water     splitting hydrogen III    

HTML PDF 收藏

An overview and recent advances in electrocatalysts for direct seawater splitting

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1408-1426 doi: 10.1007/s11705-021-2102-6

摘要： In comparison to pure water, seawater is widely accepted as an unlimited resource. The direct seawater splitting is economical and eco-friendly, but the key challenges in seawater, especially the chlorine-related competing reactions at the anode, seriously hamper its practical application. The development of earth-abundant electrocatalysts toward direct seawater splitting has emerged as a promising strategy. Highly efficient electrocatalysts with improved selectivity and stability are of significance in preventing the interference of side reactions and resisting various impurities. This review first discusses the macroscopic understanding of direct seawater electrolysis and then focuses on the strategies for rational design of electrocatalysts toward direct seawater splitting. The perspectives of improved electrocatalysts to solve emerging challenges and further development of direct seawater splitting are also provided.

关键词： seawater splitting     electrocatalysts     oxygen evolution reaction     hydrogen evolution reaction     chlorine chemistry    

HTML PDF 收藏

Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

《结构与土木工程前沿（英文）》   页码 1341-1356 doi: 10.1007/s11709-023-0988-4

摘要： This study empirically investigated the influence of freeze–thaw cycling on the dynamic splitting tensile properties of steel fiber reinforced concrete (SFRC). Brazilian disc splitting tests were conducted using four loading rates (0.002, 0.02, 0.2, and 2 mm/s) on specimens with four steel fiber contents (0%, 0.6%, 1.2%, and 1.8%) subjected to 0 and 50 freeze–thaw cycles. The dynamic splitting tensile damage characteristics were evaluated using acoustic emission (AE) parameter analysis and Fourier transform spectral analysis. The results quantified using the freeze–thaw damage factor defined in this paper indicate that the degree of damage to SFRC caused by freeze–thaw cycling was aggravated with increasing loading rate but mitigated by increasing fiber content. The percentage of low-frequency AE signals produced by the SFRC specimens during loading decreased with increasing loading rate, whereas that of high-frequency AE signals increased. Freeze–thaw action had little effect on the crack types observed during the early and middle stages of the loading process; however, the primary crack type observed during the later stage of loading changed from shear to tensile after the SFRC specimens were subjected to freeze–thaw cycling. Notably, the results of this study indicate that the freeze–thaw damage to SFRC reduces AE signal activity at low frequencies.

关键词： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emission technique     dynamic splitting tensile acoustic emission properties    

HTML PDF 收藏

Enhanced photocatalytic water splitting with surface defective SrTiO

Junying LIU, Zhidong WEI, Wenfeng SHANGGUAN

《能源前沿（英文）》 2021年 第15卷 第1期   页码 700-709 doi: 10.1007/s11708-021-0735-2

摘要： Surface reconstructed SrTiO nanocrystals were synthesized by a thermal treatment process in presence of NaBH and SrTiO nanocrystals. The surface reconstruction of SrTiO nanocrystals is attributed to the introduction of surface oxygen vacancies or Ti sites (such as Ti and Ti ) during the hydrogenation treatment process. The light absorption and the charge transfer ability of SrTiO nanocrystals are simultaneously enhanced due to surface oxygen vacancies or Ti sites (such as Ti and Ti ), which are beneficial to photocatalytic water splitting. Meanwhile, these defects also change the redox potential of the photocatalysts. Since there existed a synergistic effect between the three, the ratio of hydrogen to oxygen production was also regulated.

关键词： SrTiO3     surface reconstruction     oxygen vacancies     photocatalytic water splitting    

HTML PDF 收藏

polarization enhanced bismuth ferrate photoelectrode: fabrication and boosted photoelectrochemical water splitting

《能源前沿（英文）》 2021年 第15卷 第3期   页码 781-790 doi: 10.1007/s11708-021-0782-8

摘要： In this paper, the fabrication of a highly orientated Bi2Fe4O9 (BFO) photoelectrode in the presence of two-dimensional (2D) graphene oxide (GO) was reported. It was found that the GO can be used as a template for controlling the growth of BFO, and the nanoplate composites of BFO/reduced graphene oxide (RGO) with a high orientation can be fabricated. The thickness of the nanoplates became thinner as the ratio of GO increased. As a result, the ferroelectric spontaneous polarization unit arranges itself in the space in a periodic manner, leading to the formation of a polarization field along a special direction. Therefore, the created built-in electric field of the nanoplate composites of BFO/RGO is improved upon the increase of the amount of RGO. As expected, carrier separation is enhanced by the built-in electric field, therefore substantially enhancing the photoelectrochemical (PEC) activity of water splitting compared to pure BFO under the irradiation of visible-light.

关键词： bismuth ferrate     ferroelectric polarisation     photoelectrochemical (PEC) water splitting     graphene oxide (GO)     high orientation    

HTML PDF 收藏

Ga(X)N/Si nanoarchitecture: An emerging semiconductor platform for sunlight-powered water splitting toward

《能源前沿（英文）》 doi: 10.1007/s11708-023-0881-9

摘要： Sunlight-powered water splitting presents a promising strategy for converting intermittent and virtually unlimited solar energy into energy-dense and storable green hydrogen. Since the pioneering discovery by Honda and Fujishima, considerable efforts have been made in this research area. Among various materials developed, Ga(X)N/Si (X = In, Ge, Mg, etc.) nanoarchitecture has emerged as a disruptive semiconductor platform to split water toward hydrogen by sunlight. This paper introduces the characteristics, properties, and growth/synthesis/fabrication methods of Ga(X)N/Si nanoarchitecture, primarily focusing on explaining the suitability as an ideal platform for sunlight-powered water splitting toward green hydrogen fuel. In addition, it exclusively summarizes the recent progress and development of Ga(X)N/Si nanoarchitecture for photocatalytic and photoelectrochemical water splitting. Moreover, it describes the challenges and prospects of artificial photosynthesis integrated device and system using Ga(X)N/Si nanoarchitectures for solar water splitting toward hydrogen.

关键词： Ga(X)N/Si nanoarchitecture     artificial photosynthesis     water splitting     solar toward hydrogen    

HTML PDF 收藏

Enhanced photoelectrochemical water splitting with a donor-acceptor polyimide

《能源前沿（英文）》 doi: 10.1007/s11708-023-0910-8

摘要： Polyimide (PI) has emerged as a promising organic photocatalyst owing to its distinct advantages of high visible-light response, facile synthesis, molecularly tunable donor-acceptor structure, and excellent physicochemical stability. However, the synthesis of high-quality PI photoelectrode remains a challenge, and photoelectrochemical (PEC) water splitting for PI has been less studied. Herein, the synthesis of uniform PI photoelectrode films via a simple spin-coating method was reported, and their PEC properties were investigated using melamine as donor and various anhydrides as acceptors. The influence of the conjugate size of aromatic unit (phenyl, biphenyl, naphthalene, perylene) of electron acceptor on PEC performance were studied, where naphthalene-based PI photoelectrode exhibited the highest photocurrent response. This is resulted from the unification of wide-range light absorption, efficient charge separation and transport, and strong photooxidation capacity. This paper expands the material library of polymer films for PEC applications and contributes to the rational design of efficient polymer photoelectrodes.

关键词： polyimide (PI) film     photoelectrochemistry     band structure engineering     aromatic unit    

HTML PDF 收藏

油压极值比与极值比效率

齐茂林

《中国工程科学》 2001年 第3卷 第4期   页码 73-75

摘要：

文章应用基础公式，推导液压系统油压极值比与极值比效率之间的关系式。该式说明，油压极值比越大，极值比效率就越低。提出了油压极值比是可以设计和选择的。

关键词： 油压极值比     极值比效率     液压系统    

HTML PDF 收藏

design on photoelectrodes and devices to boost photoelectrochemical performance of solar-driven water splitting

《化学科学与工程前沿（英文）》 2022年 第16卷 第6期   页码 777-798 doi: 10.1007/s11705-022-2148-0

摘要： As an eco-friendly, efficient, and low-cost technique, photoelectrochemical water splitting has attracted growing interest in the production of clean and sustainable hydrogen by the conversion of abundant solar energy. In the photoelectrochemical system, the photoelectrode plays a vital role in absorbing the energy of sunlight to trigger the water splitting process and the overall efficiency depends largely on the integration and design of photoelectrochemical devices. In recent years, the optimization of photoelectrodes and photoelectrochemical devices to achieve highly efficient hydrogen production has been extensively investigated. In this paper, a concise review of recent advances in the modification of nanostructured photoelectrodes and the design of photoelectrochemical devices is presented. Meanwhile, the general principles of structural and morphological factors in altering the photoelectrochemical performance of photoelectrodes are discussed. Furthermore, the performance indicators and first principles to describe the behaviors of charge carriers are analyzed, which will be of profound guiding significance to increasing the overall efficiency of the photoelectrochemical water splitting system. Finally, current challenges and prospects for an in-depth understanding of reaction mechanisms using advanced characterization technologies and potential strategies for developing novel photoelectrodes and advanced photoelectrochemical water splitting devices are demonstrated.

关键词： photoelectrochemical water splitting     photoelectrodes     hydrogen production     charge separation     catalytic mechanism    

HTML PDF 收藏

State-of-the-art progress in overall water splitting of carbon nitride based photocatalysts

Bing LUO, Yuxin ZHAO, Dengwei JING

《能源前沿（英文）》 2021年 第15卷 第1期   页码 600-620 doi: 10.1007/s11708-021-0737-0

摘要： Converting solar energy into hydrogen (H ) by photocatalytic water splitting is a promising approach to simultaneously address the increasing energy demand and environmental issues. Half decade has passed since the discovery of photo-induced water splitting phenomenon on TiO photoanode, while the solar to H efficiency is still around 1%, far below the least industrial requirement. Therefore, developing efficient photocatalyst with a high energy conversion efficiency is still one of the main tasks to be overcome. Graphitic carbon nitride (g-C N ) is just such an emerging and potential semiconductor. Therefore, in this review, the state-of-the-art advances in g-C N based photocatalysts for overall water splitting were summarized in three sections according to the strategies used, and future challenges and new directions were discussed.

关键词： photocatalysis     overall water splitting     carbon nitride     hydrogen    

HTML PDF 收藏

Enhanced performance of NiF/BiVO photoanode for photoelectrochemical water splitting

《能源前沿（英文）》 2021年 第15卷 第3期   页码 760-771 doi: 10.1007/s11708-021-0781-9

摘要： The serious surface charge recombination and fatigued photogenerated carriers transfer of the BiVO4 photoanode restrict its photoelectrochemical (PEC) water splitting performance. In this work, nickel fluoride (NiF2) is applied to revamp pure BiVO4 photoanode by using a facile electrodeposition method. As a result, the as-prepared NiF2/BiVO4 photoanode increases the dramatic photocurrent density by approximately 180% compared with the pristine BiVO4 photoanode. Furthermore, the correlative photon-to-current conversion efficiency, the charge injection, and the separation efficiency, as well as the hydrogen generation of the composite photoanode have been memorably enhanced due to the synergy of NiF2 and BiVO4. This study may furnish a dependable guidance in fabricating the fluoride-based compound/semiconductor composite photoanode system.

关键词： BiVO4     NiF2     heterojunction     photoelectrochemical water splitting    

HTML PDF 收藏

Controlling interstory drift ratio profiles via topology optimization strategies

《结构与土木工程前沿（英文）》 2023年 第17卷 第2期   页码 165-178 doi: 10.1007/s11709-022-0892-3

摘要： An approach to control the profiles of interstory drift ratios along the height of building structures via topology optimization is proposed herein. The theoretical foundation of the proposed approach involves solving a min–max optimization problem to suppress the maximum interstory drift ratio among all stories. Two formulations are suggested: one inherits the bound formulation and the other utilizes a p-norm function to aggregate all individual interstory drift ratios. The proposed methodology can shape the interstory drift ratio profiles into inverted triangular or quadratic patterns because it realizes profile control using a group of shape weight coefficients. The proposed formulations are validated via a series of numerical examples. The disparity between the two formulations is clear. The optimization results show the optimal structural features for controlling the interstory drift ratios under different requirements.

关键词： interstory drift ratio     aggregation function     bound formulation     min–max problem     topology optimization    

HTML PDF 收藏

Hydrogen production from water splitting on CdS-based photocatalysts using solar light

Xiaoping CHEN, Wenfeng SHANGGUAN

《能源前沿（英文）》 2013年 第7卷 第1期   页码 111-118 doi: 10.1007/s11708-012-0228-4

摘要： Hydrogen energy has been regarded as the most promising energy resource in the near future due to that it is a clean and sustainable energy. And the heterogeneous photocatalytic hydrogen production is increasingly becoming a research hotspot around the world today. As visible light response photocatalysts for hydrogen production, cadmium sulfide (CdS) is the most representative material, the research of which is of continuing popularity. In the past several years, there has been significant progress in water splitting on CdS-based photocatalysts using solar light, especially in the development of co-catalysts. In this paper, recent researches into photocatalytic water splitting on CdS-based photocatalysts are reviewed, including controllable synthesis of CdS, modifications with different kinds of cocatalysts, solid solution, intercalated with layered nanocomposites and metal oxides, and hybrids with graphenes etc. Finally, the problems and future challenges in photocatalytic water splitting on CdS-based photocatalysts are described.

关键词： hydrogen     photocatalysis     solar conversion     cadmium sulfide (CdS) complex    

HTML PDF 收藏

标题 作者 时间 类型 操作

Design and analysis of dual fuel methanol-power poly-generation

Minghua WANG , Zheng LI , Weidou NI ,

期刊论文

Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

期刊论文

Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

期刊论文

An overview and recent advances in electrocatalysts for direct seawater splitting

期刊论文

Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

期刊论文

Enhanced photocatalytic water splitting with surface defective SrTiO

Junying LIU, Zhidong WEI, Wenfeng SHANGGUAN

期刊论文

polarization enhanced bismuth ferrate photoelectrode: fabrication and boosted photoelectrochemical water splitting

期刊论文

Ga(X)N/Si nanoarchitecture: An emerging semiconductor platform for sunlight-powered water splitting toward

期刊论文

Enhanced photoelectrochemical water splitting with a donor-acceptor polyimide

期刊论文

油压极值比与极值比效率

齐茂林

期刊论文

design on photoelectrodes and devices to boost photoelectrochemical performance of solar-driven water splitting

期刊论文

State-of-the-art progress in overall water splitting of carbon nitride based photocatalysts

Bing LUO, Yuxin ZHAO, Dengwei JING

期刊论文

Enhanced performance of NiF/BiVO photoanode for photoelectrochemical water splitting

期刊论文

Controlling interstory drift ratio profiles via topology optimization strategies

期刊论文

Hydrogen production from water splitting on CdS-based photocatalysts using solar light

Xiaoping CHEN, Wenfeng SHANGGUAN

期刊论文