Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S

Shin, Woo‐Ri; Hérnandez-Granados, Araceli; Huang, Wen Hsi; Hu, Hailin; Tao, Meng

doi:10.1016/j.matchemphys.2018.10.008

Cited by 11 publications

(4 citation statements)

References 41 publications

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“…Considering the highly reactive nature of H 2 S, it is evident that at in situ conditions, the catalysts' degradation caused by surface passivation with a metal sulfide layer or even a complete transformation into a sulfide is bound to happen (Equation ( 12)). [60] Hence, applying previously reported nonsulfide-based materials for the in situ H 2 S photoconversion is impractical, while metal-sulfide-based semiconductors seem more appropriate.…”

Section: Nonsulfide-based Semiconductorsmentioning

confidence: 99%

Solar Fuel Production from Hydrogen Sulfide: An Upstream Energy Perspective

Ferree

Koščo

Laquai

et al. 2023

Adv Energy and Sustain Res

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Hydrogen sulfide is readily available in vast quantities in the subsurface as a byproduct of industrial processes. Hydrogen evolution from H2S can transform this highly toxic gas into a source of green fuel. Compared to water splitting, H2S dissociation is thermodynamically more favorable. However, feasible industrial‐scale catalytic technologies are not developed yet. The recovery of valuable chemicals using carbon‐neutral photocatalytic processes can capitalize on abundant solar irradiation and advanced semiconductors. The challenge is developing photocatalysts that can efficiently operate over the long term in the harsh environment of subsurface and industry, while utilizing as much of the light source spectrum as possible and providing optimum adsorption/desorption abilities of hydrogen and sulfur‐containing intermediates. Meeting these requirements demands improved kinematic models of photocatalytic H2S decomposition to assess the effect of high temperatures, pressures, mixtures of hydrocarbons, produced water, and other contaminants. Metal sulfides‐based catalysts may be the key to H2S decomposition in the subsurface (e.g., oil and gas reservoirs) and wellbores, but first they need to be upscaled as bulk, robust, and recyclable materials. This review presents a guide for the development of the upstream energy production technology via photocatalytic H2S conversion.

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Section: Nonsulfide-based Semiconductorsmentioning

confidence: 99%

Solar Fuel Production from Hydrogen Sulfide: An Upstream Energy Perspective

Ferree

Koščo

Laquai

et al. 2023

Adv Energy and Sustain Res

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show abstract

“…The initial spray pyrolysis technique was carried out using iron(III) chloride solution, and the temperature was maintained at 500 °C while the atomization pressure was around 60 Pa. Later hydrogen sulfide gas was used as a sulfur source during sulfurization, which was carried out at 450 °C for 3 h, transforming the hematite into pyrite completely, which was confirmed through the XRD pattern shown in Figure . It was observed that the transformation of hematite to pyrite led to a decrease in the resistivity, and the pyrite showed p-type conductivity …”

Section: Synthesis Of Pyritementioning

confidence: 99%

“…XRD patterns of α-Fe 2 O 2 after sulfurization at 450 °C for 30 min (left) and for 3 h (right). Reproduced with permission from ref . Copyright [2018] Elsevier B.V.…”

Section: Synthesis Of Pyritementioning

confidence: 99%

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Iron Pyrite in Photovoltaics: A Review on Recent Trends and Challenges

Zaka

Alhassan

Nayfeh

2022

ACS Appl. Electron. Mater.

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With an increase in energy demand and the depletion of conventional fuels, solar cells are emerging as an excellent alternative, providing a sustainable and clean source. Solar cells consisting of different materials have been introduced in recent years, and the overall performance defined by these materials has a lot of potential to increase. Transition metal dichalcogenides have gained significant importance due to their advantageous properties and promising potential. Iron disulfide or pyrite is one such material that has risen as a favorable material for photovoltaics cells owing to its suitable band gap, high absorption coefficient, and low cost. Not only this, the “earth abundance” and nontoxicity have also increased its prospects as a photovoltaic material. This study aims to review recent progress on the synthesis of pyrite and its utilization in photovoltaics. Different methods used for the synthesis of pyrite are reviewed followed by the properties of pyrite, the challenges that hinder its efficiency, and the possibilities of further research in this area.

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Chalcogenide Materials and Derivatives for Photovoltaic Applications

2019

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Chalcogenide AB(S,Se)3 materials have recently attracted increased attention as they could simultaneously solve both the stability and toxicity issues faced by conventional perovskite solar cells. Computer‐aided design of metal chalcogenide semiconductors has experienced important progress over the past few years, leading to the discovery of very promising AB(S,Se)3 compounds and derivatives for application as absorbers in thin‐film photovoltaic devices. Experimental evidence demonstrates that the synthesis of such compounds is possible, confirming the theoretical predictions, although more research work needs to be done to further investigate the optoelectrical properties of the corresponding thin films. With the aim to provide an exhaustive starting point to further develop chalcogenide absorbers and related devices, this Review presents both an overview of the predicted chalcogenide materials and interesting derivatives for thin‐film solar cells applications, as well as a summary of the synthesis techniques developed so far to prepare such materials. The possible challenges that can be encountered during the development of chalcogenide‐based solar cells are also discussed.

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Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S

Cited by 11 publications

References 41 publications

Solar Fuel Production from Hydrogen Sulfide: An Upstream Energy Perspective

Solar Fuel Production from Hydrogen Sulfide: An Upstream Energy Perspective

Iron Pyrite in Photovoltaics: A Review on Recent Trends and Challenges

Chalcogenide Materials and Derivatives for Photovoltaic Applications

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