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Advancements on metal oxide semiconductor photocatalysts in photo-electrochemical conversion of carbon dioxide into fuels and other useful products

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Frontiers in Energy 2024年第2期18卷 187-205页

作者： Jai PRAKASH Zhangsen CHEN Shakshi SAINI Gaixia ZHANG Shuhui SUN Department of Chemistry National Institute of Technology HamirpurHamirpur 177005India Institut National de la Recherche Scientifique(inrs) Centre Énergie Matériaux TélécommunicationsVarennes J3X 1P7Canada Department of Chemistry Indian Institute of Technology MandiHimachal PradeshIndia Department of Electrical Engineering École de Technologie SupérieureMontréal H3C 1K3Canada

Due to its fascinating and tunable optoelectronic properties,semiconductor nanomaterials are the best choices for multidisciplinary ***,the use of semiconductor photocatalysts is one of the promising ways to harness solar energy for useful applications in the field of energy and *** recent years,metal oxide-based tailored semiconductor photocatalysts have extensively been used for photocatalytic conversion of carbon dioxide(CO_(2))into fuels and other useful products utilizing solar *** is very significant not only from renewable energy consumption but also from reducing global warming point of *** current research activities are promising for a better future of *** present mini-review is focused on recent developments(2–3 years)in metal oxide semiconductor hybrid photocatalysts-based photo-electrochemical conversion of CO_(2)into fuels and other useful ***,general mechanism of photo-electrochemical conversion of CO_(2)into fuels or other useful products has been ***,various metal oxide-based emerging hybrid photocatalysts including tailoring of their morphological,compositional,and optoelectronic properties have been discussed with emphasis on their role in enhancing photoelectrochemical ***,mechanism of their photo-electrochemical reactions and applications in CO_(2)conversion into fuels/other useful products have been ***,challenges and future prospects have been discussed followed by a summary.

关键词： metal-oxide semiconductors nanohybrid photocatalysts photo-electrochemical CO_(2)conversion tailoring morphology fuels challenges and future prospects

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Two-dimensional modeling of fine sediment transport with mixed sediment and consolidation: Application to the Gironde Estuary,France

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International Journal of Sediment Research 2021年第6期36卷 736-746页

作者： Sylvain Orseau Nicolas Huybrechts Pablo Tassi Damien Pham Van Bang Fabrice Klein Cerema Direction Technique Eau Mer et Fleuves Sorbonne Universités Université de Technologie de Compiégne CNRSFRE2012 RobervalCentre de Recherche Royallieu Electricité de France R&D Department Laboratoire d'Hydraulique Saint Venant (ENPC-EDF/R&D-CEREMA) 5. Centre Eau Terre et Environnement INRS-ETE 6. Grand Port Maritime de Bordeaux

In order to optimize ship navigation in the macrotidal Gironde Estuary, a recent project funded by the port of Bordeaux aims at better understand and forecast hydrodynamic and fine sediment transport within the estuary. In the framework of this project, a two-dimensional hydro-sedimentary model is built. The model includes hydrodynamic forcings, mixed-sediment transport, and consolidation processes. The harmonic analysis of the astronomical tides reveals a strong distortion of the tidal wave inducing the growth of overtide constituents and the non-significant effect of tide-surge interactions in annual-scale prediction. Depending on hydrological conditions, river discharge can considerably alter the model accuracy due to the migration of the turbidity maximum zone modifying the bottom *** with measurements shows the ability of the model to reproduce suspended-sediment concentrations in the central Estuary. Sensitivity of the model to sediment features has also been discussed in regard of suspended-sediment concentrations and fluid mud deposits. The model will be further coupled with ship squat predictions and a morphodynamic model.

关键词： Sediment transport Numerical modeling Mixed sediment Gironde Estuary Opentelemac

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二氧化硅基质包埋硅纳米晶的微观结构和发光性能

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材料研究学报 2009年第4期23卷 352-356页

作者：王乙潜梁文双 G.G.ROSS 青岛大学国家重点实验室培育基地青岛市宁夏路308号青岛266071 inrs-EMT 1650boulevardLionel-BouletVarennesCanadaJ3X1S2

利用离子注入和后续高温退火的方法制备了包埋在二氧化硅(SiO_2)基质中的硅纳米晶,研究了不同离子注入浓度试样的微观结构和发光性能,以及硅纳米晶的生长机理和发光机制,结果表明:较小的硅纳米晶(10 nm)则是由多个小纳米晶粒通过孪晶组... 详细信息

利用离子注入和后续高温退火的方法制备了包埋在二氧化硅(SiO_2)基质中的硅纳米晶,研究了不同离子注入浓度试样的微观结构和发光性能,以及硅纳米晶的生长机理和发光机制,结果表明:较小的硅纳米晶(10 nm)则是由多个小纳米晶粒通过孪晶组合或融合而成的;离子注入浓度为8×10^(16)cm^(-2)的样品其发光强度是离子注入浓度为3×10^(17)cm^(-2)样品发光强度的5倍;硅纳米晶内部的微观结构缺陷(如孪晶和层错)对其荧光强度有很大的影响.

关键词：无机非金属材料硅纳米晶电子显微学生长机理荧光光谱

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Toward carbon neutrality by artificial photosynthesis

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Frontiers in Energy 2024年第1期18卷 54-55页

作者： Baowen ZHOU Minhua SHAO Sharif Md.SADAF Shuhui SUN Key Laboratory for Power Machinery and Engineering of the Ministry of Education Research Center of Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Chemical and Biological Engineering Energy InstituteThe Hong Kong University of Science and TechnologyHong KongChina Institut National de la Recherche Scientifique(inrs)-CenterÉnergie Matériaux Télécommunications VarennesQuebec J3X 1P7Canada

CO_(2)is not only the primary cause of climate change but also an abundant and recyclable carbon *** breakthrough in emerging disruptive technologies such as carbon capture and storage(CCS),power-to-X,and direct air capture(DAC)is fundamental to achieving carbon *** these technologies,artificial photosynthesis offers an attractive method for recycling carbon dioxide and water into fuels and chemicals using solar energy(CO_(2)+H_(2)O+sunlight→fuels+chemicals).It holds great promise for addressing the critical challenges associated with elevated CO_(2)concentrations and securing a sustainable supply of fuels and chemicals for economic sectors.

关键词： neutral holds breakthrough

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Deep-learning-empowered synthetic dimension dynamics:morphing of light into topological modes

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Advanced Photonics 2024年第2期6卷 61-68页

作者： Shiqi Xia Sihong Lei Daohong Song Luigi Di Lauro Imtiaz Alamgir Liqin Tang Jingjun Xu Roberto Morandotti Hrvoje Buljan Zhigang Chen Nankai University TEDA Institute of Applied PhysicsSchool of PhysicsThe MOE Key Laboratory of Weak-Light Nonlinear PhotonicsTianjinChina Shanxi University Collaborative Innovation Center of Extreme OpticsTaiyuanChina inrs-EMT VarennesQuebecCanada University of Zagreb Department of PhysicsFaculty of ScienceZagrebCroatia

Synthetic dimensions(SDs)opened the door for exploring previously inaccessible phenomena in high-dimensional ***,construction of synthetic lattices with desired coupling properties is a challenging and unintuitive ***,we use deep learning artificial neural networks(ANNs)to construct lattices in real space with a predesigned spectrum of mode eigenvalues,and thus to validly design the dynamics in synthetic mode *** employing judiciously chosen perturbations(wiggling of waveguides at desired frequencies),we show resonant mode coupling and tailored dynamics in *** distinct examples are illustrated:one features uniform synthetic mode coupling,and the other showcases the edge defects that allow for tailored light transport and ***,we demonstrate morphing of light into a topologically protected edge mode with modified Su-Schrieffer-Heeger photonic *** an ANN-assisted construction of SDs may advance toward“utopian networks,”opening new avenues for fundamental research beyond geometric limitations as well as for applications in mode lasing,optical switching,and communication technologies.

关键词： synthetic dimensions deep learning mode manipulation topological mode morphing photonic lattices

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Effect of cleanup of spiked sludge on corn growth biosorption and metal leaching

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Emerging Contaminants 2021年第1期7卷 77-87页

作者： Driss Barraoui Jean-François Blais Michel Labrecque Institut National de La Recherche Scientifique(inrs-ETE) Universite Du Quebec490Rue de La CouronneQuebecQuebecG1K 9A9Canada Institut de Recherche en Biologie Vegetale(IRBV) 4101Rue Sherbrooke EstMontrealQuebecH1X 2B2Canada

A chemical leaching process was used for the cleanup of two municipal biosolids(MOS and BES)spiked with Cd,Cu,Zn or their mixture prior to agricultural ***-cleaned,cleaned and washed biosolids were compared as soil amendments for corn cultivation in *** growth,biosorption and metal leaching were *** showed that biosolid amendments tend to produce more aerial *** and washing of BES biosolid significantly increased total biomass of roots and stalks,*** biosorption of metals,Cd accumulated in roots(0.06e1.13 mg kg^(-1))and leaves(0.06-0.63 mg kg^(-1)),but not in seeds nor in *** amounts of Cu were detected in roots(10.7-18.2 mg kg^(-1)),stalks(1.29-3.78 mg kg^(-1))and leaves(6.77-20.2 mg kg^(-1)).However,Zn was more accumulated in roots(17.9-74.9 mg kg^(-1)),stalks(6.15-17.1 mg kg^(-1))and leaves(47.9-90.1 mg kg^(-1)).Whereas Cd and Cu decreased in the order roots>leaves>stalks,Zn decreased from leaves>roots>*** and washing of MOS and BES biosolids significantly lowered biosorption of Cd(up to 84%),Cu(up to 38%),Zn(up to 63%),and other *** in leachate draining into outlet water varied over time,but on average were moderately *** amounts of metal leached from MOS *** effects of cleanup and washing of both biosolids on biosorption and leaching depended on the initial metallic charge and the biosolid type.

关键词： Sludge Biosolid Cleanup Metal Leaching Corn

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Parameter Estimation of a Distributed Hydrological Model Using a Genetic Algorithm

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Open Journal of Modern Hydrology 2016年第3期6卷 151-167页

作者： Jasmin Boisvert Nassir El-Jabi André St-Hilaire Salah-Eddine El Adlouni Faculty of Engineering Department of Civil Engineering Université de Moncton Moncton Canada inrs Centre Eau-Terre-Environnement Québec City Canada Department of Mathematics and Statistics Faculty of Sciences Université de Moncton Moncton Canada

Water is a vital resource, and can also sometimes be a destructive force. As such, it is important to manage this resource. The prediction of stream flows is an important component of this management. Hydrological models are very useful in accomplishing this task. The objective of this study is to develop and apply an optimization method useful for calibrating a deterministic model of the daily flows of the Miramichi River watershed (New Brunswick). The model used is the CEQUEAU model. The model is calibrated by applying a genetic algorithm. The Nash-Sutcliffe efficiency criterion, modified to penalize physically unrealistic results, was used as the objective function. The model was calibrated using flow data (1975-2000) from a gauging station on the Southwest Miramichi River (catchment area of 5050 km2), obtaining a Nash-Sutcliffe criterion of 0.83. Model validation was performed using flow data (2001-2009) from the same station (Nash-Sutcliffe criterion value of 0.80). This suggests that the model calibration is sufficiently robust to be used for future predictions. A second model validation was performed using data from three other measuring stations on the same watershed. The model performed well in all three additional locations (Nash-Sutcliffe criterion values of 0.77, 0.76 and 0.74), but was performing less well when applied to smaller sub-basins. Nonetheless, the relatively strong performance of the model suggests that it could be used to predict flows anywhere in the watershed, but caution is suggested for applications in small sub-basins. The performance of the CEQUEAU model was also compared to a simple benchmark model (average of each calendar day). A sensitivity analysis was also performed.

关键词： Hydrological Modeling Genetic Algorithm CEQUEAU Model Beta Function Miramichi River

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Electrochemical Activation-Induced Structural Transformation in Ni(OH)_(2)/Ti_(3)C_(2)T_(x)/NF Systems with Enhanced Electrochemical Performance for Hybrid Supercapacitors

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Energy & Environmental Materials 2024年第4期7卷 277-284页

作者： Chuming Xu Lu Dai Yiming Zhao Shuang Li Yapan Wu Xueqian Wu Gaixia Zhang Shuhui Sun Dongsheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Hubei Three Gorges Laboratory Yichang 443007China Department of Electrical Engineering École de Technologie Supérieure(ÉTS)MontréalQuébec H3C 1K3Canada Institut National de la Recherche Scientifique(inrs) CentreÉnergie Matériaux TélécommunicationsVarennesQuébec J3X 1P7Canada

Exploring a novel strategy for large-scale production of battery-type Ni(OH)_(2)-based composites,with excellent capacitive performance,is still greatly ***,we developed a facile and cost-effective strategy to in situ grow a layer of Ni(OH)_(2)/Ti_(3)C_(2)T_(x)composite on the nickel foam(NF)collector,where Ti_(3)C_(2)T_(x)is not only a conductive component,but also a catalyst that accelerates the oxidation of NF to Ni(OH)_(2).Detailed analysis reveals that the crystallinity,morphology,and electronic structure of the integrated electrode can be tuned via the electrochemical activation,which is beneficial for improving electrical conductivity and redox *** expected,the integrated electrode shows a specific capacity of 1.09 C cm^(-2)at 1 mA cm^(-2)after three custom activation cycles and maintains 92.4%of the initial capacity after 1500 ***,a hybrid supercapacitor composed of Ni(OH)_(2)/Ti_(3)C_(2)T_(x)/NF cathode and activated carbon anode provides an energy density of 0.1 mWh cm^(-2)at a power density of 0.97 mW cm^(-2),and excellent cycling stability with about 110%capacity retention rate after 5000 *** work would afford an economical and convenient method to steer commercial Ni foam into advanced Ni(OH)_(2)-based composite materials as binder-free electrodes for hybrid supercapacitors.

关键词： electrochemical activation hybrid supercapacitors Ni(OH)_(2) Ti_(3)C_(2)T_(x)

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Single‐pixel terahertz imaging:a review

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Opto-Electronic Advances 2020年第9期3卷 15-29页

作者： Luca Zanotto Riccardo Piccoli Junliang Dong Roberto Morandotti Luca Razzari Institut National de la Recherche Scientifique(inrs) CentreÉnergieMatériaux et Télécommunications(EMT)VarennesQC J3X 1S2Canada Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

This paper is devoted to reviewing the results achieved so far in the application of the single-pixel imaging technique to terahertz(THz)*** use of THz radiation for imaging purposes has been largely explored in the last twenty years,due to the unique capabilities of this kind of radiation in interrogating material ***,THz imaging systems are still limited by the long acquisition time required to reconstruct the object image and significant efforts have been recently directed to overcome this *** of the most promising approaches in this sense is the so-called“single-pixel”imaging,which in general enables image reconstruction by patterning the beam probing the object and measuring the total transmission(or reflection)with a single-pixel detector(i.e.,with no spatial resolution).The main advantages of such technique are that i)no bulky moving parts are required to raster-scan the object and ii)compressed sensing(CS)algorithms,which allow an appropriate reconstruction of the image with an incomplete set of measurements,can be successfully ***,this can result in a reduction of the acquisition *** this review,we cover the experimental solutions proposed to implement such imaging technique at THz frequencies,as well as some practical uses for typical THz applications.

关键词： terahertz imaging single-pixel imaging compressed sensing

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Design of a Plasmonic Platform to Improve the SERS Sensitivity for Molecular Detection

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Photonic Sensors 2020年第3期10卷 204-214页

作者： Chahinez DAB Reji THOMAS Andreas RUEDIGER Chemistry Department Universitéde MontréalMontreal H3C 3J7Canada Division of Research and development Lovely Professional UniversityPunjab 144411India Nanophotonics-Nanoeletronicss Institut National de la Recherche Scientifique INRS-EMTVarennes J3X 1S2Canada

We suggested a plasmonic platform based on a cubic pattern of gold spheres for surface enhanced Raman spectroscopy(SERS).In the case of linear polarization along the symmetry axes,the SERS enhancement per area is identical to hexagonally patterned *** validity of this model was tested using the simulation package of COMSOL Multiphysics®Modeling *** found an improved sensitivity in the near infrared and visible region of the electromagnetic *** method considered tolerance towards stacking faults and suggested a plasmonic platform for ultra-sensing *** design can be extended towards the molecular detection if the proposed plasmonic platform is used with SERS.

关键词： Plasmonic platform SERS enhancement sensitivity finite element method

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