Bulletin of the Chemical Society of Japan最新文献_第2页

Catalytic Combustion of Toluene over Co3O4 loaded on ZrSn1−xFexO4−δ ZrSn1-xFexO4-δ 上负载的 Co3O4 催化燃烧甲苯

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-27 DOI: 10.1093/bulcsj/uoae084

Naoyoshi Nunotani, Takumi Tanaka, Nobuhito Imanaka

{"title":"Catalytic Combustion of Toluene over Co3O4 loaded on ZrSn1−xFexO4−δ","authors":"Naoyoshi Nunotani, Takumi Tanaka, Nobuhito Imanaka","doi":"10.1093/bulcsj/uoae084","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae084","url":null,"abstract":"Toluene is one of the volatile organic compounds which are harmful to the environment and human health. One promising approach to eliminate toluene is catalytic combustion. Although precious metal based catalysts are known to show high activity for toluene combustion, the high price of the precious metals has restricted their widespread applications. In this study, precious-metal-free catalysts of Co3O4/ZrSn1−xFexO4−δ were synthesized for toluene combustion. Here, scrutinyite-type ZrSnO4 was focused as a promoter which can supply active oxygen species from inside the lattice toward the Co3O4 activator. In addition, Fe2+/3+ ions were introduced into the ZrSnO4 lattice to enhance the oxygen supply ability owing to the improvement of redox properties and the formation of oxygen vacancies for smooth oxide ion migration. The oxygen supply from the ZrSn1−xFexO4−δ lattice facilitated toluene oxidation on Co3O4, and the highest catalytic activity was obtained for the 19 wt% Co3O4/ZrSn0.93Fe0.07O4−δ (Co3O4/ZSF0.07) catalyst, where the complete combustion was realized at the temperature as low as 250 °C. The toluene combustion reaction over Co3O4/ZSF0.07 is considered to proceed along a typical route of the rapid transformation of toluene into the intermediates (benzyl alcohol, benzaldehyde, benzoate, and maleic anhydride) and finally the formation of carbon dioxide and water.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141773358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The activity of thermostable NiO/CeO2 heterointerface structure toward low-temperature catalytic CO–NO reaction 可恒温的 NiO/CeO2 异质界面结构在低温催化 CO-NO 反应中的活性

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-23 DOI: 10.1093/bulcsj/uoae081

Zannatul Mumtarin Moushumy, Hiroshi Yoshida, Kaori Tokusada, Ai Kuraoka, Sota Sakamoto, Masayuki Tsushida, Masato Machida

{"title":"The activity of thermostable NiO/CeO2 heterointerface structure toward low-temperature catalytic CO–NO reaction","authors":"Zannatul Mumtarin Moushumy, Hiroshi Yoshida, Kaori Tokusada, Ai Kuraoka, Sota Sakamoto, Masayuki Tsushida, Masato Machida","doi":"10.1093/bulcsj/uoae081","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae081","url":null,"abstract":"The surface grafting of NiO onto CeO2 nanocrystallites generates heterointerface structures, providing efficient active sites for CO–NO reactions toward forming N2 and CO2. In this study, we investigated the effects of high-temperature thermal aging on the activity and nanostructure of the NiO/CeO2 catalyst. After thermal aging at 900 °C, the catalyst retained a high catalytic activity, whereas the reference catalysts lost theirs owing to considerable solid-state reactions and sintering. The as-prepared fresh NiO/CeO2 catalyst (calcined at 600 °C) contained high dispersions of NiO species in CeO2 crystallites. Conversely, the thermally aged catalyst comprised grown NiO and CeO2 crystallites were allowed to contact intimately to form thermostable interfaces, where the perimeter in the vicinity provided the Ni2+-incorporated CeO2 surface for removing and filling the oxygen species in the catalytic cycle toward facilitating CO–NO reactions. Based on in situ Fourier transform infrared and parallel isotopic reaction analyses, we confirmed the following as possible pathways: (i) the removal of the surface oxygen by the adsorbed CO to form an oxygen vacancy (VO), (ii) the interaction between the adsorbed NO with VO, and (iii) the N–O bond cleavage and the reaction with CO to form isocyanate, followed by the reaction with NO to produce N2.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141773355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Black Phosphorus Quantum Dots Functionalized with Photochromic Poly(vinylspiropyran)-Grafted Polydopamine for Transient Digital-Type Memristors 用于瞬态数字式 Memristors 的光致变色聚（乙烯基硅吡喃）接枝多多巴胺功能化黑磷量子点

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-19 DOI: 10.1093/bulcsj/uoae083

Zemiao Zhao, Qiang Che, Qian Chen, Kexin Wang, Kejia Zhao, Chenjian Zhang, Haidong He, Xinzhu Wang, Yu Chen

{"title":"Black Phosphorus Quantum Dots Functionalized with Photochromic Poly(vinylspiropyran)-Grafted Polydopamine for Transient Digital-Type Memristors","authors":"Zemiao Zhao, Qiang Che, Qian Chen, Kexin Wang, Kejia Zhao, Chenjian Zhang, Haidong He, Xinzhu Wang, Yu Chen","doi":"10.1093/bulcsj/uoae083","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae083","url":null,"abstract":"The covalent functionalization of black phosphorus quantum dots (BPQDs) with organic species or polymers will inevitably change or damage their electronic structure and intrinsic structure. To address this problem and explore application of BPQDs in transient digital-type memristors, a polydopamine (PDA) thin film is first synthesized in situ on the surface of BPQDs to produce a donor–acceptor type BPQDs@PDA composite which is directly used to react with 2-bromoisobutyryl bromide to give BPQDs@PDA-Br. By using BPQDs@PDA-Br as atom transfer radical polymerization agent, a large number of polyvinylspiropyran chains (PSP) are in situ grown from the PDA surface to yield BPQDs@PDA-PSP. Upon UV/visible light illumination, the spiropyran’s two isomers (ring-closed spiropyran form and ring-opened merocyanine) in the PSP moieties will interconvert into each other rapidly. As expected, the as-fabricated ITO/BPQDs@PDA-PSP/ITO device exhibits typical nonvolatile digital-type memristive performance under visible irradiation, with a small turn-on voltage of -1.52 V, a turn-off voltage of +1.16 V, and an ON/OFF ratio of with an ON/OFF current ratio of 1.02 ×104. Upon UV illumination, the information stored in the device is quickly and completely erased within six seconds. By utilizing a simple memristor-based convolutional neural network, one can easily realize handwritten digit recognition. After 10 epochs of training, numeral recognition accuracy can reach up to 96.21%.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141744752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sulfonate-Functionalized Covalent Organic Frameworks for Capacitive Deionization 用于电容式去离子的磺酸盐官能化共价有机框架

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-19 DOI: 10.1093/bulcsj/uoae074

Dong Jiang, Xingtao Xu, Yoshio Bando, Saad M Alshehri, Miharu Eguchi, Toru Asahi, Yusuke Yamauchi

引用次数: 0

Deoxygenative Functionalizations of Aromatic Dicarbonyls and Aldehydes 芳香族二羰基和醛的脱氧功能化

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-19 DOI: 10.1093/bulcsj/uoae078

Moriaki Sakihara, Shuhei Shimoyama, Miki B Kurosawa, Junichiro Yamaguchi

引用次数: 0

Step-growth irreversible deactivation radical polymerization: synergistic developments with chain-growth reversible deactivation radical polymerization 阶跃生长不可逆失活自由基聚合：与链式生长可逆失活自由基聚合的协同发展

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-17 DOI: 10.1093/bulcsj/uoae069

Masami Kamigaito

{"title":"Step-growth irreversible deactivation radical polymerization: synergistic developments with chain-growth reversible deactivation radical polymerization","authors":"Masami Kamigaito","doi":"10.1093/bulcsj/uoae069","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae069","url":null,"abstract":"Recent advances in chain-growth reversible deactivation radical polymerization (CG-RDRP), i.e. the so-called “living radical polymerization”, have synergistically developed step-growth radical polymerizations via controlled formation of radical species from covalent bonds followed by irreversible deactivation of the resulting radical species. The monomers for radical polyaddition are thus designed to possess carbon–halogen or thioester bonds, which can generate radical species in the presence of transition metal catalysts and radical initiators, as well as carbon‒carbon double bonds, which will irreversibly form carbon–halogen or thioester bonds. Radical polycondensations are achievable via radical coupling reactions of carbon-centered radicals generated from carbon–halogen bonds or radical quenching reactions with nitroxides. Furthermore, radical addition-condensation polymerizations are achieved by a sequence of reactions, i.e. the formation of radical species from carbon–halogen bonds, radical addition to nitroso or thiocarbonylthio compounds, and coupling or quenching reactions with the resulting stable radical. These step-growth irreversible deactivation radical polymerizations (SG-IDRP) enable the synthesis of a variety of polymers, such as polyethers, polyesters, polyamides, and polyimides, which have aliphatic, aromatic, polar, and degradable groups in their main chains. Sequence-regulated vinyl polymer structures can also be constructed by designing monomers. Combinations with CG-RDRPs further lead to unique hybrid block, multiblock, graft, hyperbranched, and network polymers.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141744753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Speed Imaging and Quantitative Analysis of Non-Equilibrium Stochastic Processes Using Atomic-Resolution Electron Microscopy 利用原子分辨率电子显微镜对非平衡态随机过程进行高速成像和定量分析

IF 3.3 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-16 DOI: 10.1093/bulcsj/uoae082

Takayuki Nakamuro

引用次数: 0

A Layered Titanate Nanowire Helps Pt/TiO2 Photocatalyst for Solar Hydrogen Evolution from Water with High Quantum Efficiency 层状钛酸盐纳米线帮助 Pt/TiO2 光催化剂实现高量子效率的太阳能水氢转化

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-16 DOI: 10.1093/bulcsj/uoae079

Rafat Tahawy, Mohamed Esmat, Hamza El-Hosainy, Fatma E Farghaly, El-Sayed A Abdel-Aal, F I El-Hosiny, Yusuke Ide

{"title":"A Layered Titanate Nanowire Helps Pt/TiO2 Photocatalyst for Solar Hydrogen Evolution from Water with High Quantum Efficiency","authors":"Rafat Tahawy, Mohamed Esmat, Hamza El-Hosainy, Fatma E Farghaly, El-Sayed A Abdel-Aal, F I El-Hosiny, Yusuke Ide","doi":"10.1093/bulcsj/uoae079","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae079","url":null,"abstract":"Research into TiO2 photocatalysts for solar H2 evolution from water is still growing for environmentally benign and economically valid H2 production. Herein, in contrast to many researches on the modification of TiO2 toward higher photocatalytic activities, we develop a photocatalytically inactive TiO2-based nanostructure and use it, like graphene, as a booster of a benchmark TiO2. A layered potassium titanate with two-dimensional plate-like particle morphology was converted to the corresponding one-dimensional nanowire form via a hydrothermal reaction, after which the layered potassium titanate nanowire was acid-treated to obtain a layered titanate nanowire. This nanowire was completely inactive toward H2 evolution from water containing methanol under solar simulator irradiation. However, when Pt nanoparticle-loaded P25 TiO2 (Pt/P25) was mixed with a considerably smaller amount of the layered titanate nanowire in water, a durable composite was obtained and the composite showed a good photocatalytic activity three times higher than Pt/P25. The apparent quantum efficiency of the reaction at wavelength of 350 nm was 56%, which was higher than or comparable to those of the state-of-the-art TiO2-based photocatalysts. The possible reason for the enhanced photocatalytic activity of the Pt/P25 and layered titanate nanowire composite involved the transfer of photogenerated holes from Pt/P25 to the nanowire to suppress charge recombination and/or disaggregation (improved dispersion) of Pt/P25 particles on the nanowire.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141721366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulation of the Intermolecular Interactions of Cucurbit[7]uril with Phenylalanine Derivatives by the Functional Groups 功能团对葫芦[7]脲与苯丙氨酸衍生物分子间相互作用的调节

IF 3.3 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-15 DOI: 10.1093/bulcsj/uoae077

Kaori Ueno-Noto, Seina Toyama, Yuki Kono, Keiko Takano

{"title":"Modulation of the Intermolecular Interactions of Cucurbit[7]uril with Phenylalanine Derivatives by the Functional Groups","authors":"Kaori Ueno-Noto, Seina Toyama, Yuki Kono, Keiko Takano","doi":"10.1093/bulcsj/uoae077","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae077","url":null,"abstract":"\u0000 Intermolecular interactions in 1:1 inclusion complexes of cucurbit[7]uril (CB[7]) with phenylalanine derivatives were investigated by density functional theory (B97-D) calculations. For each complex, two optimized geometries were found: conformer C in which a guest molecule resided in the center of CB[7], and conformer E where a guest molecule was present at the edge of CB[7]. The order of energy differences between these conformers agreed well with previously reported differences in the affinity of guest molecules for CB[7]. Molecular dynamics simulations of the complexes showed that the guest molecules in CB[7] had different stabilities, and the calculated binding free energies between them also qualitatively agreed with the experimental results.\u0000 Pair-interaction energy decomposition analyses of the complexes at FMO-MP2/6-31G(d) and aug-cc-pVDZ level of theory were performed using snapshot structures at 500 ns of simulations. The dispersion interaction characterized the interaction, and the order of total interaction energies between the guest molecules and CB[7] was also associated with the experimental results. A significant difference in electrostatic interaction energies was observed in conformer E, which was correlated with the stability of the guest molecules at the edge of CB[7]. The balance between the stabilities of these conformers was correlated with the affinity of guest molecules for CB[7].","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assembly/Disassembly Control of Gold Nanorods with Uniform Orientation on Anionic Polymer Brush Substrates 在阴离子聚合物刷基底上组装/拆卸方向一致的金纳米棒的控制方法

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-12 DOI: 10.1093/bulcsj/uoae073

Jingyan Yang, Yu Sekizawa, Xu Shi, Kuniharu Ijiro, Hideyuki Mitomo

{"title":"Assembly/Disassembly Control of Gold Nanorods with Uniform Orientation on Anionic Polymer Brush Substrates","authors":"Jingyan Yang, Yu Sekizawa, Xu Shi, Kuniharu Ijiro, Hideyuki Mitomo","doi":"10.1093/bulcsj/uoae073","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae073","url":null,"abstract":"Sophisticated control of the spatial arrangement of gold nanorods provides significant advantages in the design of plasmonic systems. However, dynamic modulation of the gold nanorod spatial arrangements remains challenging. Here, we present a novel strategy for dynamic control of thermo-responsive gold nanorods with uniform alignment on a solid substrate using polymer brushes. In this system, cationic-thermo-responsive gold nanorods were immobilized into anionic polymer brushes via moderate electrostatic interactions, providing vertically aligned gold nanorod arrays. Upon heating, the gold nanorods were assembled while maintaining their vertical orientation within the polymer brushes. They returned to the original state upon cooling, indicating reversible assembly/disassembly. It is noticeable that this system exhibits rapid changes in nanostructure arrangement even when immobilized in the polymer brush substrate on a solid substrate rather than those dispersed in solution. Importantly, the gold nanorods showed good adhesion stability in polymer brushes without any significant detachment during washing and thermal cycling processes, but performed assembly formation even at largely separated conditions, indicating the traveling of considerable distances similar to the lateral diffusion of membrane proteins in cell membranes. In addition to providing unprecedented control over gold nanorod spatial configurations, our approach introduces a versatile platform for developing advanced plasmonic devices.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0