Activity and selectivity of CO2 photoreduction on catalytic materials

2020 ◽  
Vol 49 (37) ◽  
pp. 12918-12928
Author(s):  
Wen-Jin Yin ◽  
Bo Wen ◽  
Qingxia Ge ◽  
Xi-Bo Li ◽  
Gilberto Teobaldi ◽  
...  
Keyword(s):  
Environmental Problems ◽  
Added Value ◽  
Solar Light ◽  
Co2 Photoreduction ◽  
Catalytic Materials

Photoreduction of molecular CO2 by solar light into added-value fuels or chemical feedstocks is an appealing strategy to simultaneously overcome environmental problems and energy challenges.

scholarly journals High Photothermally Active Fe2O3 Film for CO2 Photoreduction with H2O Driven by Solar Light

2019 ◽  
Vol 2 (12) ◽  
pp. 8376-8380 ◽  
Author(s):  
Zekai Zhang ◽  
Zhihong Gao ◽  
Huayan Liu ◽  
Stéphane Abanades ◽  
Hanfeng Lu
Keyword(s):  
Solar Light ◽  
Co2 Photoreduction ◽  
Fe2o3 Film

Boosting CO2 photoreduction activity by large Fresnel lens concentrated solar light

2019 ◽  
Vol 125 ◽  
pp. 48-51 ◽  
Author(s):  
Xiaoxiang Fang ◽  
Zhihong Gao ◽  
Hanfeng Lu ◽  
Zekai Zhang
Keyword(s):  
Fresnel Lens ◽  
Solar Light ◽  
Co2 Photoreduction

scholarly journals Improvement of CO2 Photoreduction Efficiency by Process Intensification

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 912
Author(s):  
Zekai Zhang ◽  
Ying Wang ◽  
Guokai Cui ◽  
Huayan Liu ◽  
Stéphane Abanades ◽  
...  
Keyword(s):  
Light Intensity ◽  
Reaction Temperature ◽  
Incident Light ◽  
Process Intensification ◽  
Reaction Rates ◽  
Reactor System ◽  
Solar Light ◽  
Co2 Photoreduction ◽  
Temperature And Pressure ◽  
Set Up

This paper addresses an innovative approach to improve CO2 photoreduction via process intensification. The principle of CO2 photoreduction using process intensification is presented and reviewed. Process intensification via concentrating solar light technology is developed and demonstrated. The concept consists in rising the incident light intensity as well as the reaction temperature and pressure during CO2 photoreduction using concentrating solar light. A solar reactor system using concentrated sunlight was accordingly designed and set up. The distribution of light intensity and temperature in the reactor was modeled and simulated. CO2 photoreduction performance in the reactor system was assessed, and the reaction temperature and pressure evolution were recorded. The results showed that the light intensity, temperature, and pressure could be effectively increased and irradiation on the catalyst surface followed a Gaussian distribution. The CO2 photoreduction reaction rates were enhanced to hundreds of times.

scholarly journals Graphene nanocrystals in CO2 photoreduction with H2O for fuel production

2020 ◽  
Vol 2 (3) ◽  
pp. 991-1006 ◽  
Author(s):  
Williams Kweku Darkwah ◽  
Godfred Kwesi Teye ◽  
Yanhui Ao
Keyword(s):  
Chemical Stability ◽  
Low Cost ◽  
Solar Light ◽  
Photocatalytic Process ◽  
Fuel Production ◽  
Co2 Photoreduction

Graphene nanocrystals can utilize solar light and are valuable in cases where electricity is lacking due to their chemical stability during the photocatalytic process, low cost and non-toxicity.

scholarly journals Remarkable CO2 photoreduction activity using TiO2 nanotube arrays under favorable photothermal conditions driven by concentrated solar light

2021 ◽  
Vol 119 (12) ◽  
pp. 123906
Author(s):  
Zekai Zhang ◽  
Ying Wang ◽  
Guokai Cui ◽  
Hanfeng Lu ◽  
Stéphane Abanades
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Solar Light ◽  
Nanotube Arrays ◽  
Co2 Photoreduction

The Added Value of Graphical Input and Display for Electron Lens Design

1990 ◽  
Vol 48 (1) ◽  
pp. 190-191
Author(s):  
B. Lencova ◽  
G. Wisselink
Keyword(s):  
Flux Density ◽  
Numerical Data ◽  
Added Value ◽  
Lens Design ◽  
Step Size ◽  
Magnetic Lens ◽  
Flux Lines ◽  
Fine Mesh ◽  
Electron Lens ◽  
User Friendly

Recent progress in computer technology enables the calculation of lens fields and focal properties on commonly available computers such as IBM ATs. If we add to this the use of graphics, we greatly increase the applicability of design programs for electron lenses. Most programs for field computation are based on the finite element method (FEM). They are written in Fortran 77, so that they are easily transferred from PCs to larger machines.The design process has recently been made significantly more user friendly by adding input programs written in Turbo Pascal, which allows a flexible implementation of computer graphics. The input programs have not only menu driven input and modification of numerical data, but also graphics editing of the data. The input programs create files which are subsequently read by the Fortran programs. From the main menu of our magnetic lens design program, further options are chosen by using function keys or numbers. Some options (lens initialization and setting, fine mesh, current densities, etc.) open other menus where computation parameters can be set or numerical data can be entered with the help of a simple line editor. The "draw lens" option enables graphical editing of the mesh - see fig. I. The geometry of the electron lens is specified in terms of coordinates and indices of a coarse quadrilateral mesh. In this mesh, the fine mesh with smoothly changing step size is calculated by an automeshing procedure. The options shown in fig. 1 allow modification of the number of coarse mesh lines, change of coordinates of mesh points or lines, and specification of lens parts. Interactive and graphical modification of the fine mesh can be called from the fine mesh menu. Finally, the lens computation can be called. Our FEM program allows up to 8000 mesh points on an AT computer. Another menu allows the display of computed results stored in output files and graphical display of axial flux density, flux density in magnetic parts, and the flux lines in magnetic lenses - see fig. 2. A series of several lens excitations with user specified or default magnetization curves can be calculated and displayed in one session.

Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

Nanoscale ◽  
2020 ◽  
Vol 12 (33) ◽  
pp. 17265-17271
Author(s):  
Seong Kyung Nam ◽  
Kiwon Kim ◽  
Ji-Hwan Kang ◽  
Jun Hyuk Moon
Keyword(s):  
Solar Light ◽  
Photovoltaic Systems ◽  
Solar Concentrator ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators ◽  
Luminescent Solar Concentrator ◽  
Triple Band

Luminescent solar concentrator-photovoltaic systems (LSC-PV) harvest solar light by using transparent photoluminescent plates, which is expected to be particularly useful for building-integrated PV applications.

Preliminary Findings on the Use of Session Questionnaires to Improve Clinician-Client Alliance With Special Consideration to Clinical Education

2015 ◽  
Vol 25 (1) ◽  
pp. 50-60
Author(s):  
Anu Subramanian
Keyword(s):  
Graduate Students ◽  
Clinical Education ◽  
Clinical Decision Making ◽  
Rating Scale ◽  
Treatment Effectiveness ◽  
Clinical Decision ◽  
Added Value ◽  
Therapeutic Outcomes ◽  
Specific Feedback ◽  
Stakeholder Perspective

ASHA's focus on evidence-based practice (EBP) includes the family/stakeholder perspective as an important tenet in clinical decision making. The common factors model for treatment effectiveness postulates that clinician-client alliance positively impacts therapeutic outcomes and may be the most important factor for success. One strategy to improve alliance between a client and clinician is the use of outcome questionnaires. In the current study, eight parents of toddlers who attended therapy sessions at a university clinic responded to a session outcome questionnaire that included both rating scale and descriptive questions. Six graduate students completed a survey that included a question about the utility of the questionnaire. Results indicated that the descriptive questions added value and information compared to using only the rating scale. The students were varied in their responses regarding the effectiveness of the questionnaire to increase their comfort with parents. Information gathered from the questionnaire allowed for specific feedback to graduate students to change behaviors and created opportunities for general discussions regarding effective therapy techniques. In addition, the responses generated conversations between the client and clinician focused on clients' concerns. Involving the stakeholder in identifying both effective and ineffective aspects of therapy has advantages for clinical practice and education.

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