This work investigated the feasibility of selective converting the toxic formaldehyde (HCHO) pollutant into solar fuels (CO and CH 4) via green photocatalysis. The yield and selectivity of CH 4 reached 50.3 μmol g –1 and 76.0%, respectively, and the conversion rate of HCHO achieved 35.9%.
This work investigated the feasibility of selective converting the toxic formaldehyde (HCHO) pollutant into solar fuels (CO and CH 4) via green photocatalysis. The yield and selectivity of CH 4 reached 50.3 μmol g –1 and 76.0%, respectively, and the conversion rate of HCHO achieved 35.9%. Reaction pathways were revealed.
3.4. Analysis of the kinetics of the oxidation The thermo-electrochemical oxidation of formaldehyde can occur directly in water to produce hydrogen and carbon dioxide in the absence of competing redox couples.
Considering the need for clean fuel and chemical production from abundant waste streams and considering solar energy being the most abundant and cheapest energy form available, solar reforming is an obvious and well-positioned emerging technology to support the transition from today’s linear to a future’s circular chemical industry.
With appropriate light harvesting, catalyst design, device configurations and waste pre-treatment strategies, a range of sustainable fuels and value-added chemicals can already be selectively produced from diverse waste feedstocks, including biomass and plastics, demonstrating the potential of solar-powered upcycling plants.
Due to the much lower onset voltage of WAS oxidation, and thus suppression of OER, the developed electrochemical system could be powered directly by PV panels, which avoids the grid integration of PV electricity and thus is very beneficial for safe solar-to-hydrogen conversion.
Solar reforming is both a sunlight-driven and catalytic process; therefore, its system performance is tied to the photophysical properties of the semiconductor light absorber and the electronic and chemical properties of the catalysts 94.
This work investigated the feasibility of selective converting the toxic formaldehyde (HCHO) pollutant into solar fuels (CO and CH 4) via green photocatalysis. The yield and selectivity of CH 4 reached 50.3 μmol g –1 and 76.0%, respectively, and the conversion rate of HCHO achieved 35.9%.
Indoor pollution of air by formaldehyde poses a serious threat to human health because formaldehyde causes illnesses and discomfort even at low levels, thus calling for abatement techniques. Techniques include absorption, physisorption, chemisorption, biological and botanical filtration, photocatalytic decomposition, membrane separation, plasma and catalytic oxidation. …
This paper presents a novel approach for treatment of formaldehyde wastewater driven by solar energy, called the STEP-formaldehyde oxidation process. Indoor and outdoor experiments plus investigations of the mechanism and kinetics of …
updated estimates of electricity generation GHG emissions factors as part of several recent studies. This fact sheet updates an earlier version (NREL 2013). Systematic Review NREL considered approximately 3,000 published life cycle assessment studies on utility-scale electricity generation from wind, solar photovoltaics, concentrating solar power,
Solar-driven photocatalytic CO2 reduction into CH4 with H2O is considered to be a promising way to alleviate the energy crisis and greenhouse effect. However, current …
This Review gives an overview of the technological pathways for direct and indirect production of H 2 from solar power within the frame of the Innovation Pool project " Solar H 2: Highly Pure and Compressed ".Technologies such as water electrolysis, photoelectrochemical and thermochemical water splitting, liquid metal and plasma reactors are described in terms of …
This article introduces a solar building envelope that integrates salt hydrate-based sorption thermochemical energy storage and photocatalysis to provide a dual functionality of space heating and formaldehyde degradation. The system''s heat output and air purification …
By coupling the thermodynamically favourable oxidation of waste-derived organic carbon streams with fuel-forming reduction reactions suitable for producing clean hydrogen or converting CO 2 to...
By coupling the thermodynamically favourable oxidation of waste-derived organic carbon streams with fuel-forming reduction reactions suitable for producing clean hydrogen or converting CO 2 to...
Abstract Formaldehyde is a ubiquitous carcinogenic indoor pollutant. The treatment of formaldehyde has attracted increasing social attention. Over the past few decades, an increasing number of publications have reported approaches for removing indoor formaldehyde. These potential strategies include physical adsorption, chemical catalysis, and …
Formaldehyde is a highly toxic indoor pollutant that can adversely impact human health. Various technologies have been intensively evaluated to remove formaldehyde from an indoor atmospheres. Activated carbon (AC) has been used to adsorb formaldehyde from the indoor atmosphere, which has been commercially viable owing to its low operational costs. AC …
Thermal catalytic oxidation technology by solar light is a potential way to purify formaldehyde in cars. MnO x -CeO 2 was prepared by the modified co-precipitation method as the main catalyst, and the basic characteristic (SEM, N 2 adsorption, H 2 -TPR, UV-visible absorbance) were also analyzed in detail.
This article introduces a solar building envelope that integrates salt hydrate-based sorption thermochemical energy storage and photocatalysis to provide a dual functionality of space heating and formaldehyde degradation. The system''s heat output and air purification effectiveness under dynamic exterior conditions are numerically ...
This work investigated the feasibility of selective converting the toxic formaldehyde (HCHO) pollutant into solar fuels (CO and CH 4) via green photocatalysis. The …
Outdoor pilot tests demonstrated that the STEP-formaldehyde oxidation system can work smartly and efficiently without input of energy other than sunlight and without human …
Use of Congo red dye-formaldehyde as a new sensitizer-reductant couple for enhanced simultaneous solar energy conversion and storage by photogalvanic cells at the low and artificial sun intensity
The photogalvanic cells (PG) are the promising and renewable electrochemical energy devices capable of doing the simultaneous solar power generation and storage. To realize the aim of the practical application of the PG cells in daily life, the electrical output of these cells has to be further enhanced to a level at least comparable to that of the photovoltaic cells. The …
Under no additional energy consumption, the MFC was used in situ to drive the photocatalytic system by its own power generation to realize the simultaneous removal of …
Outdoor pilot tests demonstrated that the STEP-formaldehyde oxidation system can work smartly and efficiently without input of energy other than sunlight and without human intervention. The...
Formaldehyde removal percentage significantly increases in the presence of LED UV-A lamp. With 16 min of radiation, a pH of 11, and an LED UV-A lamp intensity …
Energy Reports, 2021. The aim of this study is to harness and store solar energy through Indigo Carmine dye-Formic acid photogalvanic cells. The photogalvanic cells based on photo-sensitizer Indigo Carmine dye-surfactant Sodium Lauryl Sulphate-reductant Formic acid-NaOH alkaline medium has shown encouraging and very impressive improvement in solar energy conversion …
Methane (CH 4) is the second largest contributor to global warming among all greenhouses gases.A solar chimney power plant integrated with a photocatalytic reactor (SCPP-PCR) is a promising large-scale method for removing CH 4 from the atmosphere. This study used computational fluid dynamics (CFD) to investigate the performance and factors influencing …
Formaldehyde removal percentage significantly increases in the presence of LED UV-A lamp. With 16 min of radiation, a pH of 11, and an LED UV-A lamp intensity increased from 480 to 720 mW/cm 2, the removal percentage of formaldehyde (330 mg/l) rises from 83 to 100 % in EPC reactor and from 50 to 61 % in PEC reactor.
Thermal catalytic oxidation technology by solar light is a potential way to purify formaldehyde in cars. MnO x -CeO 2 was prepared by the modified co-precipitation method as …
Solar-driven photocatalytic CO2 reduction into CH4 with H2O is considered to be a promising way to alleviate the energy crisis and greenhouse effect. However, current CO2 photoreduction ...
The integrated process of mechanochemical fractionation-assisted and solar-driven electrochemical reforming, followed by biological funnelling, enables the efficient …
Under no additional energy consumption, the MFC was used in situ to drive the photocatalytic system by its own power generation to realize the simultaneous removal of formaldehyde at the anode and 4-CP at the cathode, and the differences in power generation and pollutant removal between the different systems were compared under a ...
Effective formaldehyde removal methods include air purification techniques, strategic ventilation strategies, and the use of indoor plants. A multi-faceted approach that combines these solutions can help create healthier and more eco-friendly living and working spaces. Homeowners and building professionals can play a vital role in implementing these …
This paper presents a novel approach for treatment of formaldehyde wastewater driven by solar energy, called the STEP-formaldehyde oxidation process. Indoor and outdoor …
The integrated process of mechanochemical fractionation-assisted and solar-driven electrochemical reforming, followed by biological funnelling, enables the efficient upcycling of sewage sludge ...
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