资源类型

期刊论文 507

会议视频 19

年份

2024 1

2023 65

2022 66

2021 66

2020 35

2019 32

2018 34

2017 21

2016 24

2015 31

2014 14

2013 17

2012 16

2011 11

2010 15

2009 15

2008 17

2007 14

2006 6

2005 3

展开 ︾

关键词

新一代智能制造 10

人工智能 6

2022全球十大工程成就 4

氢能 4

制氢 3

基本范式 3

新一代人工智能 3

2021全球十大工程成就 2

2035 2

信息技术 2

先进反应堆 2

力常数 2

压水堆 2

发电 2

可再生能源 2

无氢渗碳 2

氢燃料电池 2

燃料电池 2

燃煤发电 2

展开 ︾

检索范围：

排序： 展示方式：

Novel strategies to tailor the photocatalytic activity of metal–organic frameworks for hydrogen generation

Luis A. ALFONSO-HERRERA, Leticia M. TORRES-MARTINEZ, J. Manuel MORA-HERNANDEZ

《能源前沿（英文）》 2022年 第16卷 第5期   页码 734-746 doi: 10.1007/s11708-022-0840-x

摘要： This review provides a recompilation of the most important and recent strategies employed to increase the efficiency of metal–organic framework (MOF)-based systems toward the photocatalytic hydrogen evolution (PHE) reaction through specific strategies: tailoring the photocatalytic activity of bare MOFs and guest@MOF composites, formation of heterojunctions based on MOFs and various photocatalysts, and inorganic photocatalysts derived from MOFs. According to the data reported in this mini-review, the most effective strategy to improve the PHE of MOFs relies on modifying the linkers with new secondary building units (SBUs). Although several reviews have investigated the photocatalytic activity of MOFs from a general point of view, many of these studies relate this activity to the physicochemical and catalytic properties of MOFs. However, they did not consider the interactions between the components of the photocatalytic material. This study highlights the effects of strength of the supramolecular interactions on the photocatalytic performance of bare and MOF-based materials during PHE. A thorough review and comparison of the results established that metal–nanoparticle@MOF composites have weak van der Waals forces between components, whereas heterostructures only interact with MOFs at the surface of bare materials. Regarding material derivatives from MOFs, we found that pyrolysis destroyed some beneficial properties of MOFs for PHE. Thus, we conclude that adding SBUs to organic linkers is the most efficient strategy to perform the PHE because the SBUs added to the MOFs promote synergy between the two materials through strong coordination bonds.

关键词： metal–organic frameworks (MOFs)     photocatalytic hydrogen evolution     MOF heterojunctions     materials derived from MOFs     bandgap     recombination    

HTML PDF 收藏

Enhanced hydrogen production from aqueous methanol solution using TiO

Paramasivan GOMATHISANKAR,Tomoko NODA,Hideyuki KATSUMATA,Tohru SUZUKI,Satoshi KANECO

《化学科学与工程前沿（英文）》 2014年 第8卷 第2期   页码 197-202 doi: 10.1007/s11705-014-1417-y

摘要： The photocatalytic hydrogen production from aqueous methanol solution using titanium dioxide (TiO ) was investigated in the addition of metal particles including copper, lead, tin, and zinc. The results show that only the addition of copper particles enhances the hydrogen production. The copper usage and reaction temperature were further optimized for TiO /Cu photocatalyts. Under the optimal conditions, the hydrogen production using TiO /Cu as photocatalysts is approximately 68 times higher than that obtained with only TiO .

关键词： photocatalytic hydrogen generation     methanol     copper particles     TiO2     metal-semiconductor interface    

HTML PDF 收藏

Design and synthesis of ZnCoO/CdS for substantially improved photocatalytic hydrogen production

《化学科学与工程前沿（英文）》 2023年 第17卷 第5期   页码 606-616 doi: 10.1007/s11705-022-2233-4

摘要： In this study, the hydrogen evolution performance of CdS nanorods is improved using ZnCo2O4. ZnCo2O4 nanospheres are synthesized using the hydrothermal and calcination methods, and CdS nanorods are synthesized using the solvothermal method. From the perspective of morphology, numerous CdS nanorods are anchored on the ZnCo2O4 microspheres. According to the experimental results of photocatalytic hydrogen evolution, the final hydrogen evolution capacity of 7417.5 μmol∙g–1∙h–1 is slightly more than two times that of the single CdS, which proves the feasibility of our study. Through various characterization methods, it is proved that the composite sample has suitable optoelectronic properties. In addition, ZnCo2O4 itself exhibits good conductivity and low impedance, which shortens the charge-transfer path. Overall, the introduction of ZnCo2O4 expands the adsorption range of light and improves the performance of photocatalytic hydrogen evolution. This design can provide reference for developing high-efficiency photocatalysts.

关键词： ZnCo2O4 nanosphere     CdS nanorods     photocatalytic hydrogen evolution    

HTML PDF 收藏

Function-reversible facets enabling SrTiO nanocrystals for improved photocatalytic hydrogen evolution

《能源前沿（英文）》 doi: 10.1007/s11708-023-0894-4

摘要： It has been widely reported that, for faceted nanocrystals, the two adjacent facets with different band levels contribute to promoted charge separation, and provide active sites for photocatalytic reduction and oxidation reaction, respectively. In such cases, only one family of facets can be used for photocatalytic hydrogen evolution. Herein, by using SrTiO3 nanocrystals enclosed by {023} and {001} facets as a model photocatalyst, this paper proposed a strategy to achieve the full-facets-utilization of the nanocrystals for photocatalytic hydrogen via chemically depositing Pt nanoparticles on all facets. The photo-deposition experiment of CdS provided direct evidence to demonstrate that the {023} facets which were responsible for photooxidation reaction can be function-reversed for photocatalytic hydrogen evolution after depositing Pt nanoparticles, together with the {001} facets. Thus, the full-facets-utilization led to a much-improved activity for photocatalytic hydrogen, in contrast to those SrTiO3 nanocrystals with only {001} facets deposited by Pt nanoparticles via a photo-deposition method.

关键词： SrTiO3 nanocrystals     crystal facets     photocatalysis     hydrogen evolution    

HTML PDF 收藏

Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water

《能源前沿（英文）》 2022年 第16卷 第1期   页码 49-63 doi: 10.1007/s11708-022-0817-9

摘要： Solar energy-driven photocatalytic water splitting has been investigated for decades to produce clean and renewable green hydrogen. In this paper, the cutting-edge research within the overall water splitting system is summarized from the one-step photocatalytic overall water splitting (POWS) system to the two-step system and the cocatalysts research in this field. In addition, the photocatalytic reaction engineering study is also reviewed which is crucial for future scale-up. This mini-review provides a picture of survey of recent progress of relevant overall water splitting system, with particular attention paid to material system and mechanistic breakthroughs, and highlights the challenge and opportunity of the current system.

关键词： photocatalysis     overall water splitting     hydrogen    

HTML PDF 收藏

Research progress of defect-engineered UiO-66(Zr) MOFs for photocatalytic hydrogen production

《能源前沿（英文）》 2021年 第15卷 第3期   页码 656-666 doi: 10.1007/s11708-021-0765-9

摘要： In recent years, defect-engineered Zr-based UiO-66 metal-organic frameworks (UiO-66(Zr) metal-organic frameworks (MOFs)) have shown huge advantages in catalytic, functional materials, adsorption, and other fields due to their large surface areas, well-ordered porous structures, and flexible tailorability. It is extremely challenging to introduce defect sites in the synthesis of MOFs to regulate the physicochemical properties of materials such as (energy band structure, pore structure, etc.) to obtain an excellent performance. This paper reviews the recent research results of synthesis methods, characterization technologies, and application fields of defect-engineered UiO-66(Zr) MOFs materials in order to provide new insights to synthesize high-performance UiO-66(Zr) MOFs materials and promote the development of UiO-66(Zr) in various fields.

关键词： defect engineering     metal-organic frameworks     UiO-66     photocatalysis    

HTML PDF 收藏

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

《能源前沿（英文）》 2021年 第15卷 第3期   页码 687-699 doi: 10.1007/s11708-021-0773-9

摘要： In this paper, based on the mixture flow model, an optimized six-flux model is first established and applied to the tubular solar photocatalytic reactor. Parameters influencing photocatalyst distribution and radiation distribution at the reactor outlet, viz. catalyst concentration and circulation speed, are also analyzed. It is found that, at the outlet of the reactor, the optimized six-flux model has better performances (the energy increase by 1900% and 284%, respectively) with a higher catalyst concentration (triple) and a lower speed (one third).

关键词： photocatalytic hydrogen photoreactor     nume- rical simulation     solar energy     flow model     radiation model    

HTML PDF 收藏

In-MOF-derived In2S3/Bi2S3 heterojunction for enhanced photocatalytichydrogen production

《能源前沿（英文）》 2023年 第17卷 第5期   页码 654-663 doi: 10.1007/s11708-023-0885-5

摘要： Transition metal sulfides are commonly studied as photocatalysts for water splitting in solar-to-fuel conversion. However, the effectiveness of these photocatalysts is limited by the recombination and restricted light absorption capacity of carriers. In this paper, a broad spectrum responsive In2S3/Bi2S3 heterojunction is constructed by in-situ integrating Bi2S3 with the In2S3, derived from an In-MOF precursor, via the high-temperature sulfidation and solvothermal methods. Benefiting from the synergistic effect of wide-spectrum response, effective charge separation and transfer, and strong heterogeneous interfacial contacts, the In2S3/Bi2S3 heterojunction demonstrates a rate of 0.71 mmol/(g∙h), which is 2.2 and 1.7 times as much as those of In2S3 (0.32 mmol/(g∙h) and Bi2S3 (0.41 mmol/(g∙h)), respectively. This paper provides a novel idea for rationally designing innovative heterojunction photocatalysts of transition metal sulfides for photocatalytic hydrogen production.

关键词： photocatalytic hydrogen production     wide-spectrum response     metal sulfides     MOFs derivative     heterogeneous interfacial contact    

HTML PDF 收藏

A mini-review of ferrites-based photocatalyst on application of hydrogen production

《能源前沿（英文）》 2021年 第15卷 第3期   页码 621-630 doi: 10.1007/s11708-021-0761-0

摘要： Photocatalytic water splitting for hydrogen production is a promising strategy to produce renewable energy and decrease production cost. Spinel-ferrites are potential photocatalysts in photocatalytic reaction system due to their room temperature magnetization, the high thermal and chemical stability, narrow bandgap with broader visible light absorption, and proper conduction band energy level with strong oxidation activity for water or organic compounds. However, the fast recombination of the photoexcited electrons and holes is a critical drawback of ferrites. Therefore, the features of crystallinity, particle size, specific surface area, morphology, and band energy structure have been summarized and investigated to solve this issue. Moreover, composites construction with ferrites and the popular support of TiO2 or g-C3N4 are also summarized to illustrate the advanced improvement in photocatalytic hydrogen production. It has been shown that ferrites could induce the formation of metal ions impurity energy levels in TiO2, and the strong oxidation activity of ferrites could accelerate the oxidation reaction kinetics in both TiO2/ferrites and g-C3N4/ferrites systems. Furthermore, two representative reports of CaFe2O4/MgFe2O4 composite and ZnFe2O4/CdS composite are used to show the efficient heterojunction in a ferrite/ferrite composite and the ability of resistance to photo-corrosion, respectively.

关键词： photocatalyst     spinel-ferrite     composite     photocatalytic hydrogen production    

HTML PDF 收藏

Metal-based direct hydrogen generation as unconventional high density energy

Shuo XU, Jing LIU

《能源前沿（英文）》 2019年 第13卷 第1期   页码 27-53 doi: 10.1007/s11708-018-0603-x

摘要： Metals are unconventional hydrogen production materials which are of high energy densities. This paper comprehensively reviewed and digested the latest researches of the metal-based direct hydrogen generation and the unconventional energy utilization ways thus enabled. According to the metal activities, the reaction conditions of metals were generalized into three categories. The first ones refer to those which would violently react with water at ambient temperature. The second ones start to react with water after certain pretreatments. The third ones can only react with steam under somewhat harsh conditions. To interpret the metal-water reaction mechanisms at the molecular scale, the molecule dynamics simulation and computational quantum chemistry were introduced as representative theoretical analytical tools. Besides, the state-of-the-art of the metal-water reaction was presented with several ordinary metals as illustration examples, including the material treatment technologies and the evaluations of hydrogen evolution performances. Moreover, the energy capacities of various metals were summarized, and the application potentials of the metal-based direct hydrogen production approach were explored. Furthermore, the challenges lying behind this unconventional hydrogen generation method and energy strategy were raised, which outlined promising directions worth of further endeavors. Overall, active metals like Na and K are appropriate for rapid hydrogen production occasions. Of these metals discussed, Al, Mg and their alloys offer the most promising hydrogen generation route for clean and efficient propulsion and real-time power source. In the long run, there exists plenty of space for developing future energy technology along this direction.

关键词： metal     hydrogen generation     hydrolysis     metal water reaction     clean energy    

HTML PDF 收藏

Photocatalytic water splitting of ternary graphene-like photocatalyst for the photocatalytic hydrogen

Yan Zhang, Yuyan Zhang, Xue Li, Xiaohan Zhao, Cosmos Anning, John Crittenden, Xianjun Lyu

《环境科学与工程前沿（英文）》 2020年 第14卷 第4期 doi: 10.1007/s11783-020-1248-7

摘要： Abstract •The MoS2/SiC/GO composite has a strong photocatalytic activity than SiC. •The optimal catalyst yielded the highest quantum of 21.69%. •GO acts as a bridge for electron passage in photocatalytic reaction. In recent times, therehas been an increasing demand for energy which has resulted in an increased consumption of fossil fuels thereby posing a number of challenges to the environment. In the course finding possible solutions to this environmental canker, solar photocatalytic water splitting to produce hydrogengas has been identified as one of the most promising methods for generating renewable energy. To retard the recombination of photogenerated carriers and improve the efficiencyof photocatalysis, the present paper reports a facile method called the hydrothermal method, which was used to prepare ternary graphene-like photocatalyst. A “Design Expert” was used to investigate the influence of the loading weight of Mo and GO as well as the temperature of hydrothermal reaction and their interactions on the evolution of hydrogen (H2) in 4 h. The experimental results showed that the ternary graphene-like photocatalyst has a strong photocatalytic hydrogen production activity compared to that of pure SiC. In particular, the catalyst added 2.5 wt% of GO weight yielded the highest quantum of 21.69 % at 400–700 nm of wavelength. The optimal evolution H2 in 4 h conditions wasobtained as follows: The loading weight of Mo was 8.19 wt%, the loading weight of GO was 2.02 wt%, the temperature of the hydrothermal reaction was 200.93°C. Under the optimum conditions, the evolution of H2 in 4 h could reach 4.2030 mL.

关键词： Water splitting     Visible light     Graphene-like photocatalyst     Response surface methodology    

HTML PDF 收藏

Sulfur and carbon co-doped g-CN microtubes with enhanced photocatalytic H production activity

《能源前沿（英文）》 doi: 10.1007/s11708-023-0899-z

摘要： Metal-free graphitic carbon nitride (g-C3N4) has captured significant attention as a low-cost and efficient hydrogen production photocatalyst through. Effectively regulating the microstructure and accelerating the separation of photogenerated carriers remain crucial strategies for promoting the photocatalytic performance of this material. Herein, a novel sulfur–carbon co-doped g-C3N4 (SCCN) hierarchical microtubules filled with abundant nanosheets inside by thermal polymerization is reported. Numerous nanosheets create abundant pores and cavities inside the SCCN microtubes, thereby increasing the specific surface area of g-C3N4 and providing sufficient reactant attachment sites. Besides, the hierarchical structure of SCCN microtubules strengthens the reflection and scattering of light, and the utilization of visible light is favorably affected. More importantly, co-doping S and C has greatly improved the photocatalytic performance of graphitic carbon nitride, optimized the band gap structure and enhanced the photogenerated carrier splitting. Consequently, the SCCN exhibits a remarkable photocatalytic H2 evolution rate of 4868 μmol/(g·h). This work demonstrates the potential of multi-nonmetal doped g-C3N4 as the ideal photocatalyst for H2 evolution.

关键词： carbon nitride     photocatalysis     hydrogen production    

HTML PDF 收藏

Alkali-thermal gasification and hydrogen generation potential of biomass

Alexander B. Koven, Shitang S. Tong, Ramin R. Farnood, Charles Q. Jia

《化学科学与工程前沿（英文）》 2017年 第11卷 第3期   页码 369-378 doi: 10.1007/s11705-017-1662-y

摘要： Generating hydrogen gas from biomass is one approach to lowering dependencies on fossil fuels for energy and chemical feedstock, as well as reducing greenhouse gas emissions. Using both equilibrium simulations and batch experiments with NaOH as a model alkaline, this study established the technical feasibility of converting various biomasses (e.g., glucose, cellulose, xylan and lignin) into H -rich gas via catalyst-free, alkali-thermal gasification at moderate temperatures (as low as 300 °C). This process could produce more H with less carbon-containing gases in the product than other comparable methods. It was shown that alkali-thermal gasification follows , with carbonate being the solid product which is different from the one suggested in the literature. Moreover, the concept of hydrogen generation potential (H -GP)—the maximum amount of H that a biomass can yield, was introduced. For a given biomass C H O , the H -GP would be moles of H . It was demonstrated experimentally that the H -GP was achievable by adjusting the amounts of H O and NaOH, temperature and pressure.

关键词： hydrogen generation potential     biomass     lignocellulose     alkali-thermal gasification     sodium hydroxide    

HTML PDF 收藏

风氢互补发电系统构建初探

徐晔,陈晓宁

《中国工程科学》 2010年 第12卷 第11期   页码 83-88

摘要：

为了解决风力发电输出功率的不平稳性和电压的波动性，以解决并网的瓶颈问题，提出风氢互补发电系统，将风力发电输出“波谷”对应的可控出力作为风电场能保证恒定输出的功率，“波峰”至“波谷”之间对应的不可控的出力，采用“波峰”制氢进行“削峰”、“波谷”氢气发电进行“填谷”的方式进行平衡。并以如东风电场为例进行了实例分析与计算，结果证明采用该风氢互补系统基本能保证发电输出平衡，是解决风电并网有效可行的途径。

关键词： 风力发电     氢能发电     制氢储氢    

HTML PDF 收藏

Highly effective visible-photocatalytic hydrogen evolution and simultaneous organic pollutant degradation

《环境科学与工程前沿（英文）》 2022年 第16卷 第10期 doi: 10.1007/s11783-022-1566-z

摘要：

● An urchin-like OMS/ZIS composite was fabricated by a facile solvothermal method.

关键词： Dual-functional photocatalysts     Oxygen-doped MoS2/ZnIn2S4     H2 evolution     Organic pollutant    

HTML PDF 收藏

标题 作者 时间 类型 操作

Novel strategies to tailor the photocatalytic activity of metal–organic frameworks for hydrogen generation

Luis A. ALFONSO-HERRERA, Leticia M. TORRES-MARTINEZ, J. Manuel MORA-HERNANDEZ

期刊论文

Enhanced hydrogen production from aqueous methanol solution using TiO

Paramasivan GOMATHISANKAR,Tomoko NODA,Hideyuki KATSUMATA,Tohru SUZUKI,Satoshi KANECO

期刊论文

Design and synthesis of ZnCoO/CdS for substantially improved photocatalytic hydrogen production

期刊论文

Function-reversible facets enabling SrTiO nanocrystals for improved photocatalytic hydrogen evolution

期刊论文

Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water

期刊论文

Research progress of defect-engineered UiO-66(Zr) MOFs for photocatalytic hydrogen production

期刊论文

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

期刊论文

In-MOF-derived In2S3/Bi2S3 heterojunction for enhanced photocatalytichydrogen production

期刊论文

A mini-review of ferrites-based photocatalyst on application of hydrogen production

期刊论文

Metal-based direct hydrogen generation as unconventional high density energy

Shuo XU, Jing LIU

期刊论文

Photocatalytic water splitting of ternary graphene-like photocatalyst for the photocatalytic hydrogen

Yan Zhang, Yuyan Zhang, Xue Li, Xiaohan Zhao, Cosmos Anning, John Crittenden, Xianjun Lyu

期刊论文

Sulfur and carbon co-doped g-CN microtubes with enhanced photocatalytic H production activity

期刊论文

Alkali-thermal gasification and hydrogen generation potential of biomass

Alexander B. Koven, Shitang S. Tong, Ramin R. Farnood, Charles Q. Jia

期刊论文

风氢互补发电系统构建初探

徐晔,陈晓宁

期刊论文

Highly effective visible-photocatalytic hydrogen evolution and simultaneous organic pollutant degradation

期刊论文