Recent trends in photocatalytic materials for reduction of carbon dioxide to methanol

Adekoya, David; Tahir, Muhammad Nawaz; Amin, Nor Aishah Saidina

doi:10.1016/j.rser.2019.109389

Cited by 89 publications

(49 citation statements)

References 213 publications

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“…MOFs synthesized by suitable strategy with desired properties led to different biomedical applications, as mentioned earlier. Also MOFs with tunable characteristics could be applied in separation [65,66,67], catalysis [68,69,70], sensing [71,72,73,74,75,76,77], and storage [78,79,80,81].…”

Section: Biodegradabilitymentioning

confidence: 99%

An investigation of affecting factors on MOF characteristics for biomedical applications: A systematic review

Ahmadi

Ayyoubzadeh

Ghorbani‐Bidkorbeh

et al. 2021

Heliyon

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Metal-organic frameworks (MOFs) are a fascinating class of crystalline porous materials composed of metal ions and organic ligands. Due to their attractive properties, MOFs can potentially offer biomedical field applications, such as drug delivery and imaging. This study aimed to systematically identify the affecting factors on the MOF characteristics and their effects on structural and biological characteristics. An electronic search was performed in four databases containing PubMed, Scopus, Web of Science, and Embase, using the relevant keywords. After analyzing the studies, 20 eligible studies were included in this review. As a result, various factors such as additives and organic ligand can influence the size and structure of MOFs. Additives are materials that can compete with ligand and may affect the nucleation and growth processes and, consequently, particle size. The nature and structure of ligand are influential in determining the size and structure of MOF. Moreover, synthesis parameters like the reaction time and initial reagents ratio are critical factors that should be optimized to regulate the size and structure. Of note is that the nature of the ligand and using a suitable additive can control the porosity of MOF. The more extended ligands aid in forming large pores. The choice of metallic nodes and organic ligand, and the MOF concentration are important factors since they can determine toxicity and biocompatibility of the final structure. The physicochemical properties of MOFs, such as hydrophobicity, affect the toxicity of nanoparticles. An increase in hydrophobicity causes increased toxicity of MOF. The biodegradability of MOF, as another property, depends on the organic ligand and metal ion and environmental conditions like pH. Photocleavable ligands can be served for controlled degradation of MOFs. Generally, by optimizing these affecting factors, MOFs with desirable properties will be obtained for biomedical applications.

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Section: Biodegradabilitymentioning

confidence: 99%

An investigation of affecting factors on MOF characteristics for biomedical applications: A systematic review

Ahmadi

Ayyoubzadeh

Ghorbani‐Bidkorbeh

et al. 2021

Heliyon

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“…Methanol is a very important raw material for the chemical industry—a large amount of the methanol produced is used as a solvent or substrate for synthesis reactions for chemicals, such as formaldehyde, methyl tert-butyl ether and dimethyl ether [ 2 ]. Additionally, technologies for the catalytic hydrogenation of carbon dioxide extracted from industrial exhaust gases to methanol are known, but even though substantial progress has been made in recent years, these technologies are still not used commercially [ 1 , 66 , 67 , 68 , 69 ]. Due to its high energy density (see Table 1 ), the energy industry uses methanol directly as a fuel, as a fuel additive or as a substrate in biodiesel production [ 1 , 70 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Wala

Simka

2021

Molecules

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The growing climate crisis inspires one of the greatest challenges of the 21st century—developing novel power sources. One of the concepts that offer clean, non-fossil electricity production is fuel cells, especially when the role of fuel is played by simple organic molecules, such as low molecular weight alcohols. The greatest drawback of this technology is the lack of electrocatalytic materials that would enhance reaction kinetics and good stability under process conditions. Currently, electrodes for direct alcohol fuel cells (DAFCs) are mainly based on platinum, which not only provides a poor reaction rate but also readily deactivates because of poisoning by reaction products. Because of these disadvantages, many researchers have focused on developing novel electrode materials with electrocatalytic properties towards the oxidation of simple alcohols, such as methanol, ethanol, ethylene glycol or propanol. This paper presents the development of electrode materials and addresses future challenges that still need to be overcome before direct alcohol fuel cells can be commercialized.

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“…Because of its attractive properties, TiO 2 is a widely used photocatalyst among all metal oxide semiconductors. Such properties include availability and affordability, strong charge transfer efficiency, protection and corrosion resistance, powerful oxidation properties, and easy tuning (Adekoya et. 2019).…”

Section: Introductionmentioning

confidence: 99%

“…While TiO 2 has several unique properties, its practical application is limited due to its high recombination charge rate, low quantum yield, and high bandgap energy (3.20 eV for anatase) (Edelmannová et al 2018); so TiO 2 has only UV light activity (wavelength of less than 380 nm). It means that in this region of the spectrum, TiO 2 is mostly inactive under visible light, which is the largest part of the solar spectrum (Adekoya et al 2019). Doping with small amounts of transition metals is the best way to improve the photocatalytic performance among the various modifications of TiO 2 usually applied.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Copper, Iron, and Nickel Doped Titanium Dioxide Photocatalysts for Decolorization of Methylene Blue

Qaderi¹,

Mamat²,

Jalil³

2021

JSM

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The visible-light response is a necessary condition for titanium dioxide (TiO2) photocatalyst to function as a visible light active photocatalyst. This condition can be solved by investigation of the bandgaps and the optimization of doping levels of multivalency metal-doped TiO2. In this study, pure and Cu, Fe, and Ni-doped TiO2 photocatalysts were prepared by the sol‐gel method. The photocatalysts were characterized using XRD, FTIR, FESEM, EDX, N2 physisorption, and UV‐Vis spectrophotometry techniques. The XRD patterns of all pure TiO2 and Cu/TiO2, Fe/TiO2, and Ni/TiO2samples showed the dominant structure of the anatase TiO2 phase. The presence of functional groups at the interface of TiO2 particles was showed by FTIR. The FESEM analysis showed that the particle size of the prepared samples was uniform with spherical morphology. EDX results showed that TiO2 has successfully incorporated Cu, Fe, and Ni metals onto its surface. The BET analysis showed that the specific surface area of the doped samples increased with the amount of doping. The optical properties of all samples were carried out using UV-DRS measurements and their obtained bandgap energies were in the range of 3.22 - 3.42 eV. The pure TiO2 displayed more than 98% and 97% decolorization rates for MB solution at the end of irradiation time of 5 h under UV and visible light, respectively. Among the doped samples, 3 mol% Ni/TiO2 and Cu/TiO2 demonstrated the highest photocatalytic activity (97.65%) under UV light and 6 mol% Ni/TiO2 under visible light for MB (96.86%) decolorization.

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Recent trends in photocatalytic materials for reduction of carbon dioxide to methanol

Cited by 89 publications

References 213 publications

An investigation of affecting factors on MOF characteristics for biomedical applications: A systematic review

An investigation of affecting factors on MOF characteristics for biomedical applications: A systematic review

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Preparation and Characterization of Copper, Iron, and Nickel Doped Titanium Dioxide Photocatalysts for Decolorization of Methylene Blue

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