Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.08
Min-Cheol Shin, I. Seo, H. Kang, Ji-Hun Seo, S. Han
In this review, research and development trends of monolithic all-solid inorganic electrochromic smart windows were introduced. Due to global warming, an electrochromic smart window which is effective for energy saving has been gaining a lot of attention. However, high production cost and durability issues are limiting its widespread use. Various studies have been conducted on counter electrode and electrolyte materials to improve electrochromic performance and durability as well as productivity. In addition, research on optimizing the device structure through the passivation layer and on film-type electrochromic devices using flexible substrates have also been conducted. These recent research results are expected to enable the global distribution of smart windows.
{"title":"A Review on Monolithic All-Solid-State Inorganic Electrochromic Smart Window","authors":"Min-Cheol Shin, I. Seo, H. Kang, Ji-Hun Seo, S. Han","doi":"10.31613/ceramist.2022.25.3.08","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.08","url":null,"abstract":"In this review, research and development trends of monolithic all-solid inorganic electrochromic smart windows were introduced. Due to global warming, an electrochromic smart window which is effective for energy saving has been gaining a lot of attention. However, high production cost and durability issues are limiting its widespread use. Various studies have been conducted on counter electrode and electrolyte materials to improve electrochromic performance and durability as well as productivity. In addition, research on optimizing the device structure through the passivation layer and on film-type electrochromic devices using flexible substrates have also been conducted. These recent research results are expected to enable the global distribution of smart windows.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82308343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.03
Se-Rin Lee, Do-young Kim, Jaewook Jung, Hyeon-Woo Kim, Byeong-Hyeon Lee, Min-Ho Park
Metal halide perovskites (MHPs) are promising candidate materials for next-generation optoelectronic device applications such as light-emitting diodes (LEDs), solar cells, and photodetectors. However, the toxicity and poor stability issues of lead-based MHPs (LHPs) are still challenging to fulfill a restriction of hazardous substances directive (RoHS) and industrial standards for the commercialization of LHP devices. Therefore, eco-friendly and lead-free halide perovskites (EHPs), which are superior to LHPs, should be developed. In this review, we will review the promising strategies to substitute a lead cation with non-toxic metal cations such as tin (Sn), bismuth (Bi), antimony (Sb), and copper (Cu), and discuss the synthetic methods, crystal structures, luminescent properties, and their LED applications.
{"title":"Recent Progress of Eco-friendly Lead-free Halide Perovskite Light-Emitting Diodes","authors":"Se-Rin Lee, Do-young Kim, Jaewook Jung, Hyeon-Woo Kim, Byeong-Hyeon Lee, Min-Ho Park","doi":"10.31613/ceramist.2022.25.3.03","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.03","url":null,"abstract":"Metal halide perovskites (MHPs) are promising candidate materials for next-generation optoelectronic device applications such as light-emitting diodes (LEDs), solar cells, and photodetectors. However, the toxicity and poor stability issues of lead-based MHPs (LHPs) are still challenging to fulfill a restriction of hazardous substances directive (RoHS) and industrial standards for the commercialization of LHP devices. Therefore, eco-friendly and lead-free halide perovskites (EHPs), which are superior to LHPs, should be developed. In this review, we will review the promising strategies to substitute a lead cation with non-toxic metal cations such as tin (Sn), bismuth (Bi), antimony (Sb), and copper (Cu), and discuss the synthetic methods, crystal structures, luminescent properties, and their LED applications.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88741869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.06
Ji In Lee, Seongyun Ko, Y. Choi
The recent commercial success of foldable smartphones is indebted in part to integration of ultra-thin glass (UTG) into the flexible display modules. To endow glass with such a foldability, while keeping its merits over polymeric materials, tons of complicated issues need to be resolved in addition to thickness reduction. Since UTG is subjected to repeated deformations during its service as a flexible cover window, extra care is required to minimize microcracks during the whole preparation process. Here, it is noteworthy that chemical strengthening via ion exchange should be performed to UTG for better durability. In this article, after briefly reviewing the current status of UTG in terms of production and process, its chemical strengthening is highlighted as a viable option to further innovate its functionalities. A new ion-exchange technique which is not adopting the molten-salt-bath is proposed, and some experimental demonstrations exemplifying the concept of ‘actively stress-managed glass’ are delineated.
{"title":"Chemical Strengthening of Ultra-Thin Glass for Use as Cover Window of Flexible Displays","authors":"Ji In Lee, Seongyun Ko, Y. Choi","doi":"10.31613/ceramist.2022.25.3.06","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.06","url":null,"abstract":"The recent commercial success of foldable smartphones is indebted in part to integration of ultra-thin glass (UTG) into the flexible display modules. To endow glass with such a foldability, while keeping its merits over polymeric materials, tons of complicated issues need to be resolved in addition to thickness reduction. Since UTG is subjected to repeated deformations during its service as a flexible cover window, extra care is required to minimize microcracks during the whole preparation process. Here, it is noteworthy that chemical strengthening via ion exchange should be performed to UTG for better durability. In this article, after briefly reviewing the current status of UTG in terms of production and process, its chemical strengthening is highlighted as a viable option to further innovate its functionalities. A new ion-exchange technique which is not adopting the molten-salt-bath is proposed, and some experimental demonstrations exemplifying the concept of ‘actively stress-managed glass’ are delineated.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75376461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.01
Kicheol Kim, Kwanhee Seo, Kidong Kim
Common soda lime silicate waste glass generated from the bottle manufacturing, building, and automobile industries contributes to saving of production cost and CO2 emission in glass industry. There is another type of waste glass recently emerged, namely, display waste glass derived from LCD and OLED industry. There are three main sources where the waste glass is generated: 1) LCD/OLED glass manufacturers, 2) LCD/OLED panel manufacturers and 3) end-of-life LCD/OELD devices. Both first and second sources are the onsite manufacturing of LCD/OLED glass or panels in four Asian countries. Whereas, the third one is anywhere LCD/OLED devices are used. Therefore, the disposal of the end LCD/OLED waste glass from the third source is not a local but a global issue. In the present paper, the recycling possibility of such waste glass is reviewed based on literatures and their results are discussed from the viewpoint of valuable recycling.
{"title":"Valuable recycling of LCD/OLED cullet/waste glass","authors":"Kicheol Kim, Kwanhee Seo, Kidong Kim","doi":"10.31613/ceramist.2022.25.3.01","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.01","url":null,"abstract":"Common soda lime silicate waste glass generated from the bottle manufacturing, building, and automobile industries contributes to saving of production cost and CO2 emission in glass industry. There is another type of waste glass recently emerged, namely, display waste glass derived from LCD and OLED industry. There are three main sources where the waste glass is generated: 1) LCD/OLED glass manufacturers, 2) LCD/OLED panel manufacturers and 3) end-of-life LCD/OELD devices. Both first and second sources are the onsite manufacturing of LCD/OLED glass or panels in four Asian countries. Whereas, the third one is anywhere LCD/OLED devices are used. Therefore, the disposal of the end LCD/OLED waste glass from the third source is not a local but a global issue. In the present paper, the recycling possibility of such waste glass is reviewed based on literatures and their results are discussed from the viewpoint of valuable recycling.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82260836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.05
Jung-wook Cho
Development of the advanced mold flux is always mandatory to enhance both the quality and productivity of continuous casting of steels. Especially, the increasing demands for high alloy steels production and high speed casting reveals serious contradiction between two principal functions of mold flux: lubrication and controlling heat transfer. In order to overcome this problematic needs, some innovative research activities are being carried out. MAE (Mixed Alkali Effect) has been examined in alumino-borosilicate-based mold system to stabilize alkali cation and aluminum association, which enables chemically stable glassy mold flux film during casting of high alloy steels. Non-Newtonian mold fluxes could be developed by addition of Si3N4 or SiC due to the increase of stiffness of polymeric structure, which would be beneficial to satisfy the contradictory requirements of viscosity at mold top surface and mold wall. Some innovative ideas for controlling mold heat transfer without deteriorating the lubrication have been examined by dispersion of nano-size metallic particles and by modification of prenucleation motif. All these trials are closely related with glass science and engineering. Therefore, it should be highly beneficial to enhance the collaborative research activities between glass and metallurgy society for further development of advanced functional mold flux systems.
{"title":"Controlling the Thermal and Rheological Properties of Silicate Glasses for Development of Advanced Mold Flux Systems","authors":"Jung-wook Cho","doi":"10.31613/ceramist.2022.25.3.05","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.05","url":null,"abstract":"Development of the advanced mold flux is always mandatory to enhance both the quality and productivity of continuous casting of steels. Especially, the increasing demands for high alloy steels production and high speed casting reveals serious contradiction between two principal functions of mold flux: lubrication and controlling heat transfer. In order to overcome this problematic needs, some innovative research activities are being carried out. MAE (Mixed Alkali Effect) has been examined in alumino-borosilicate-based mold system to stabilize alkali cation and aluminum association, which enables chemically stable glassy mold flux film during casting of high alloy steels. Non-Newtonian mold fluxes could be developed by addition of Si3N4 or SiC due to the increase of stiffness of polymeric structure, which would be beneficial to satisfy the contradictory requirements of viscosity at mold top surface and mold wall. Some innovative ideas for controlling mold heat transfer without deteriorating the lubrication have been examined by dispersion of nano-size metallic particles and by modification of prenucleation motif. All these trials are closely related with glass science and engineering. Therefore, it should be highly beneficial to enhance the collaborative research activities between glass and metallurgy society for further development of advanced functional mold flux systems.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74157550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.02
Jungho Kim, Ji-Weon Kim
Oxide semiconductors have developed rapidly in a short period of time in various industrial fields due to their ability to be easily manufactured at low temperatures and recoverability of electrical properties. Among these oxide semiconductors, nickel oxide (NiO) is one of the most studied transition metal oxides. NiO is a p-type semiconductor with a wide band gap at room temperature, and has advantages of low toxicity, low cost, and excellent stability. Due to these advantages, NiO is widely used in various industrial fields such as gas sensors. In this paper, various synthesis methods of NiO will be briefly reviewed. Such synthesis methods include organic solvent methods, chemical vapor deposition methods, sol-gel methods, and chemical solution deposition methods. Materials required for each synthesis method, experimental methods, post-processing, and experimental results are briefly described.
{"title":"Synthesis of NiO for various optoelectronic applications","authors":"Jungho Kim, Ji-Weon Kim","doi":"10.31613/ceramist.2022.25.3.02","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.02","url":null,"abstract":"Oxide semiconductors have developed rapidly in a short period of time in various industrial fields due to their ability to be easily manufactured at low temperatures and recoverability of electrical properties. Among these oxide semiconductors, nickel oxide (NiO) is one of the most studied transition metal oxides. NiO is a p-type semiconductor with a wide band gap at room temperature, and has advantages of low toxicity, low cost, and excellent stability. Due to these advantages, NiO is widely used in various industrial fields such as gas sensors. In this paper, various synthesis methods of NiO will be briefly reviewed. Such synthesis methods include organic solvent methods, chemical vapor deposition methods, sol-gel methods, and chemical solution deposition methods. Materials required for each synthesis method, experimental methods, post-processing, and experimental results are briefly described.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91394986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.31613/ceramist.2022.25.2.01
J. Kang
The methanol-to-olefins reaction is regarded as an important technology capable of meeting today’s rising demand for light olefins. The regioselective confinement effect of small-pore, cage-type zeolites on hydrocarbon pool intermediates results in strong shape selectivity determining the product olefin distribution. Despite decades of effort, a direct correlation between zeolite cage topologies and olefin selectivity distributions had remained elusive. The cage-defining ring theory is the first general catalytic shape selectivity theory that can predict the selectivity distribution of product light olefins from the given crystallographic information of the small pore zeolite catalysts. This article outlines the development procedure of the cagedefining ring theory. To aid readers’ comprehension, brief introductions to the structures and properties of zeolites and related molecular sieves, which are an important class of ceramic catalysts, are also provided.
{"title":"Development of shape selectivity theory of methanol-to-olefins reaction over small-pore zeolite molecular sieves","authors":"J. Kang","doi":"10.31613/ceramist.2022.25.2.01","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.2.01","url":null,"abstract":"The methanol-to-olefins reaction is regarded as an important technology capable of meeting today’s rising demand for light olefins. The regioselective confinement effect of small-pore, cage-type zeolites on hydrocarbon pool intermediates results in strong shape selectivity determining the product olefin distribution. Despite decades of effort, a direct correlation between zeolite cage topologies and olefin selectivity distributions had remained elusive. The cage-defining ring theory is the first general catalytic shape selectivity theory that can predict the selectivity distribution of product light olefins from the given crystallographic information of the small pore zeolite catalysts. This article outlines the development procedure of the cagedefining ring theory. To aid readers’ comprehension, brief introductions to the structures and properties of zeolites and related molecular sieves, which are an important class of ceramic catalysts, are also provided.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88934435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.31613/ceramist.2022.25.2.06
S. Lim, T. Lim
NiCoS has good conductivity, and the sulfur it contains is known to improve the activity for hydrogen evolution reaction. Thus NiCoS has recently attracted much attention as a catalyst for hydrogen evolution reaction catalyst in neutral-pH water electrolysis. In this study, NiCoS was fabricated using pulse electrodeposition method and the effect of off time on the composition, morphology, and hydrogen evolution reaction activity was investigated. The physical and chemical characteristics of the catalyst were analyzed using field emission scanning electron microscopy, X-ray diffractometry, electrochemical impedance spectroscopy, etc. It was observed that the surface area of NiCoS, the sulfur content, and hydrogen evolution reaction activity of NiCoS increased together as the off time increased at a constant on time. The NiCoS with the highest sulfur content, produced by pulse electrodeposition, showed overpotentials of 262 and 285 mV to deliver current densities of 10, 50 mA/cm2, respectively, in the neutral pH region.
{"title":"Pulse electrodeposition of NiCoS on carbon paper for electrochemical hydrogen evolution reaction","authors":"S. Lim, T. Lim","doi":"10.31613/ceramist.2022.25.2.06","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.2.06","url":null,"abstract":"NiCoS has good conductivity, and the sulfur it contains is known to improve the activity for hydrogen evolution reaction. Thus NiCoS has recently attracted much attention as a catalyst for hydrogen evolution reaction catalyst in neutral-pH water electrolysis. In this study, NiCoS was fabricated using pulse electrodeposition method and the effect of off time on the composition, morphology, and hydrogen evolution reaction activity was investigated. The physical and chemical characteristics of the catalyst were analyzed using field emission scanning electron microscopy, X-ray diffractometry, electrochemical impedance spectroscopy, etc. It was observed that the surface area of NiCoS, the sulfur content, and hydrogen evolution reaction activity of NiCoS increased together as the off time increased at a constant on time. The NiCoS with the highest sulfur content, produced by pulse electrodeposition, showed overpotentials of 262 and 285 mV to deliver current densities of 10, 50 mA/cm2, respectively, in the neutral pH region.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75291394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.31613/ceramist.2022.25.2.07
Seohyeong Jang, Jihyeon Kang, Soomin Park, Inho Nam
Porous metal or metal oxide frameworks have been comprehensively applicated to numerous fields such as catalyst, energy storage system, and bio-filtration. Here, we introduce a de-alloying method prior to a facile polymer gel-templating to synthesize a self-supporting porous metal/metal oxide frameworks (e.g. Au, Ag, Ag/CuO, Au/MnO2, etc.). The template methods based on polymer gel suggest easy preparation of porous metal/metal oxide frameworks, prepared by heating a metal precursor impregnated in polymer gel. Compared to de-alloying Ag65A35 method, polymer gel based soft template serves numerous advantages as follows; 1) facile fabrication of porous transition metal structure, 2) atom economy, 3) high-loading of precious metals, 4) harmless to human and environment, 5) natural abundance, 6) easy to scale-up and control the pore size by differentiate the polymer content ratio, 7) mild reaction conditions, and 8) structural controllability, 9) cost-effectiveness, etc. We report the methodologies to synthesis bicontinuous metal/ metal oxide architectures, derived from porous gel soft templates, and they are applicated to the energy storage system such as, supercapacitor, pseudocapacitor, and battery.
{"title":"Synthesis of Porous Metallic Structure and Its Application for Energy Storage Materials","authors":"Seohyeong Jang, Jihyeon Kang, Soomin Park, Inho Nam","doi":"10.31613/ceramist.2022.25.2.07","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.2.07","url":null,"abstract":"Porous metal or metal oxide frameworks have been comprehensively applicated to numerous fields such as catalyst, energy storage system, and bio-filtration. Here, we introduce a de-alloying method prior to a facile polymer gel-templating to synthesize a self-supporting porous metal/metal oxide frameworks (e.g. Au, Ag, Ag/CuO, Au/MnO2, etc.). The template methods based on polymer gel suggest easy preparation of porous metal/metal oxide frameworks, prepared by heating a metal precursor impregnated in polymer gel. Compared to de-alloying Ag65A35 method, polymer gel based soft template serves numerous advantages as follows; 1) facile fabrication of porous transition metal structure, 2) atom economy, 3) high-loading of precious metals, 4) harmless to human and environment, 5) natural abundance, 6) easy to scale-up and control the pore size by differentiate the polymer content ratio, 7) mild reaction conditions, and 8) structural controllability, 9) cost-effectiveness, etc. We report the methodologies to synthesis bicontinuous metal/ metal oxide architectures, derived from porous gel soft templates, and they are applicated to the energy storage system such as, supercapacitor, pseudocapacitor, and battery.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91060751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.31613/ceramist.2022.25.2.05
G. Moon
Hydrogen peroxide (H2O2) has been widely utilized as an oxidant in diverse industries such as pulp and paper bleaching, chemical synthesis, wastewater treatment, fuel, etc., which has been supplied by anthraquinone process. However, this method needs explosive hydrogen and oxygen gases, high temperature/pressure, massive organic solvent, and noble metal catalysts. The photocatalytic production of H2O2 is cost-effective and environmentally-benign process since only oxygen, water, and light are required. In this review, titanium dioxide (TiO2) and graphitic carbon nitride (g-C3N4) as a representative UVand visible-light-active photocatalyst, respectively, are discussed with overviewing various structure and surface modification techniques in order to improve the photocatalytic H2O2 production. Furthermore, recent studies based on the photoelectrochemical(PEC) H2O2 production are briefly mentioned to understand how the separation of redox-reaction is important to obtain a high apparent quantum yield. Finally, the review proposes the outlook and perspective on the photocatalytic H2O2 production to build-up decentralized wastewater treatment system.
{"title":"Design of Photocatalytic Materials for Hydrogen Peroxide Production","authors":"G. Moon","doi":"10.31613/ceramist.2022.25.2.05","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.2.05","url":null,"abstract":"Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) has been widely utilized as an oxidant in diverse industries such as pulp and paper bleaching, chemical synthesis, wastewater treatment, fuel, etc., which has been supplied by anthraquinone process. However, this method needs explosive hydrogen and oxygen gases, high temperature/pressure, massive organic solvent, and noble metal catalysts. The photocatalytic production of H<sub>2</sub>O<sub>2</sub> is cost-effective and environmentally-benign process since only oxygen, water, and light are required. In this review, titanium dioxide (TiO<sub>2</sub>) and graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) as a representative UVand visible-light-active photocatalyst, respectively, are discussed with overviewing various structure and surface modification techniques in order to improve the photocatalytic H<sub>2</sub>O<sub>2</sub> production. Furthermore, recent studies based on the photoelectrochemical(PEC) H<sub>2</sub>O<sub>2</sub> production are briefly mentioned to understand how the separation of redox-reaction is important to obtain a high apparent quantum yield. Finally, the review proposes the outlook and perspective on the photocatalytic H<sub>2</sub>O<sub>2</sub> production to build-up decentralized wastewater treatment system.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90856486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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