发布求助
文献互助 智能选刊 最新文献

Precision Chemistry最新文献

筛选
英文 中文
Dual Free Radical Synergism for Enhancing Proton Conductivity in Photochromism iHOFs 双自由基协同作用增强光致变色iof中质子电导率
Precision Chemistry Pub Date : 2025-02-20 DOI: 10.1021/prechem.4c0010210.1021/prechem.4c00102
Cheng Liu, Xu-Yong Chen*, Xiao-Jie Cao, Wenmin Zhang and Li-Hui Cao*, 
{"title":"Dual Free Radical Synergism for Enhancing Proton Conductivity in Photochromism iHOFs","authors":"Cheng Liu,&nbsp;Xu-Yong Chen*,&nbsp;Xiao-Jie Cao,&nbsp;Wenmin Zhang and Li-Hui Cao*,&nbsp;","doi":"10.1021/prechem.4c0010210.1021/prechem.4c00102","DOIUrl":"https://doi.org/10.1021/prechem.4c00102https://doi.org/10.1021/prechem.4c00102","url":null,"abstract":"<p >Stimuli-responsive smart materials, as an emerging material, can fulfill reversible transformation of chemical/physical properties under external stimuli such as mechanical stress, light, and electricity, which has the highlights of rapid response, designable structure, and function. Two ionic hydrogen-bonded organic frameworks (<b>iHOFs 36–37</b>) were synthesized by self-assembly of bis(benzene-<i>o</i>/<i>p</i>-sulfonic acid)-naphthalenediimide (<i>o</i>/<i>p</i>-H<sub>2</sub>BSNDI) and two basic ligands. The naphthalenediimide (NDI) was introduced into the material to equip <b>iHOFs 36–37</b> with radical-driven photochromic behavior. The proton conductivity of <b>iHOF-37</b> demonstrated a maximum of 6.50 × 10<sup>–4</sup> S·cm<sup>–1</sup> at 98% RH and 100 °C, and it increased to 9.10 × 10<sup>–3</sup> S·cm<sup>–1</sup> due to dual free radical synergism following UV irradiation (NDI and viologen), which represents a significant 14-fold enhancement. Furthermore, the incorporation of <b>iHOF-37</b> into the chitosan (CS) matrix forms photochromic composite membranes. The proton conductivity of the <b>5%-iHOF-37/CS</b> composite membrane reached up to 5.70 × 10<sup>–2</sup> S·cm<sup>–1</sup> at 98% RH and 90 °C, and reached 8.08 × 10<sup>–2</sup> S·cm<sup>–1</sup> after UV irradiation. This work reveals the dual radicals generated by NDI and viologen derivatives, whose synergistic action plays a significant role in enhancing the proton conductivity in iHOFs and composite membranes, rendering the rational design of stimuli-responsive smart materials feasible.</p>","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"221–230 221–230"},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ring Polymer Molecular Dynamics Rates for Hydrogen Recombinative Desorption on Pt(111). Pt（111）上氢重组脱附的环状聚合物分子动力学速率。
Precision Chemistry Pub Date : 2025-02-06 eCollection Date: 2025-06-23 DOI: 10.1021/prechem.4c00099
Liang Zhang, Florian Nitz, Dmitriy Borodin, Alec M Wodtke, Hua Guo
{"title":"Ring Polymer Molecular Dynamics Rates for Hydrogen Recombinative Desorption on Pt(111).","authors":"Liang Zhang, Florian Nitz, Dmitriy Borodin, Alec M Wodtke, Hua Guo","doi":"10.1021/prechem.4c00099","DOIUrl":"10.1021/prechem.4c00099","url":null,"abstract":"<p><p>The ring polymer molecular dynamics (RPMD) rate theory, which is capable of handling nuclear quantum effects such as zero-point energy and tunneling, is applied to the recombinative desorption (RD) of adsorbed hydrogen atoms on a Pt(111) surface, a fundamental surface reaction crucial in heterogeneous catalysis. Recent experiments have provided highly accurate measurements of hydrogen RD rates, offering rare benchmarks for theoretical predictions. The RPMD rate coefficients of H<sub>2</sub> RD on an experimentally calibrated first-principles potential energy surface closely match the experimental data within a factor of 2 at several temperatures. Importantly, our results reveal that the dominant nuclear quantum effect in this prototypic system is the reactant zero-point energy, rather than tunneling.</p>","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 6","pages":"319-325"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12188481/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144508684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ring Polymer Molecular Dynamics Rates for Hydrogen Recombinative Desorption on Pt(111) Pt（111）上氢重组脱附的环状聚合物分子动力学速率
Precision Chemistry Pub Date : 2025-02-06 DOI: 10.1021/prechem.4c0009910.1021/prechem.4c00099
Liang Zhang, Florian Nitz, Dmitriy Borodin, Alec M. Wodtke and Hua Guo*, 
{"title":"Ring Polymer Molecular Dynamics Rates for Hydrogen Recombinative Desorption on Pt(111)","authors":"Liang Zhang,&nbsp;Florian Nitz,&nbsp;Dmitriy Borodin,&nbsp;Alec M. Wodtke and Hua Guo*,&nbsp;","doi":"10.1021/prechem.4c0009910.1021/prechem.4c00099","DOIUrl":"https://doi.org/10.1021/prechem.4c00099https://doi.org/10.1021/prechem.4c00099","url":null,"abstract":"<p >The ring polymer molecular dynamics (RPMD) rate theory, which is capable of handling nuclear quantum effects such as zero-point energy and tunneling, is applied to the recombinative desorption (RD) of adsorbed hydrogen atoms on a Pt(111) surface, a fundamental surface reaction crucial in heterogeneous catalysis. Recent experiments have provided highly accurate measurements of hydrogen RD rates, offering rare benchmarks for theoretical predictions. The RPMD rate coefficients of H<sub>2</sub> RD on an experimentally calibrated first-principles potential energy surface closely match the experimental data within a factor of 2 at several temperatures. Importantly, our results reveal that the dominant nuclear quantum effect in this prototypic system is the reactant zero-point energy, rather than tunneling.</p>","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 6","pages":"319–325 319–325"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00099","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HCl Treatment of Mixed-Phase MoVTeNbO x Catalysts for Enhanced Performance in Selective Oxidation of Propane. 混合相MoVTeNbO x催化剂的HCl处理提高丙烷选择性氧化性能。
Precision Chemistry Pub Date : 2025-01-30 eCollection Date: 2025-04-28 DOI: 10.1021/prechem.4c00089
Zeyue Wei, Hanzhi Zhang, Yunxing Bai, Xuanyu Zhang, Weixin Huang
{"title":"HCl Treatment of Mixed-Phase MoVTeNbO <sub><i>x</i></sub> Catalysts for Enhanced Performance in Selective Oxidation of Propane.","authors":"Zeyue Wei, Hanzhi Zhang, Yunxing Bai, Xuanyu Zhang, Weixin Huang","doi":"10.1021/prechem.4c00089","DOIUrl":"https://doi.org/10.1021/prechem.4c00089","url":null,"abstract":"<p><p>Hydrothermally synthesized mixed-phase MoVTeNbO <sub><i>x</i></sub> catalysts are active for catalyzing the selective oxidation of propane to acrylic acid but suffer from the presence of the amorphous phase and low specific surface areas. Herein we report that HCl treatment preferentially dissolves the amorphous phase in hydrothermally synthesized mixed-phase MoVTeNbO <sub><i>x</i></sub> catalysts and increases the catalytic performance. An optimal HCl treatment significantly increases the C<sub>3</sub>H<sub>8</sub> conversion from 38.9% to 58.2% without changing the acrylic acid selectivity in the selective oxidation of propane to acrylic acid at 380 °C. The original and HCl treated catalysts exhibit similar apparent activation energies, while HCl treatment increases the specific surface area, surface acid sites, surface V<sup>5+</sup> density, and C<sub>3</sub>H<sub>8</sub> and C<sub>3</sub>H<sub>6</sub> irreversible adsorption amounts but decreases the C<sub>3</sub>H<sub>8</sub> and C<sub>3</sub>H<sub>6</sub> irreversible adsorption heats. The C<sub>3</sub>H<sub>8</sub> conversion rate is proportional to the surface V<sup>5+</sup> density and C<sub>3</sub>H<sub>8</sub> irreversible adsorption amount, and the TOF is measured as 3.31 ± 0.08 × 10<sup>-5</sup> s<sup>-1</sup> at 340 °C. Thus, HCl treatment enhances the catalytic performance of mixed-phase MoVTeNbO <sub><i>x</i></sub> catalysts mainly by increasing the active site density rather than by increasing the active site activity. Our results provide an effective approach to prepare highly active mixed-phase MoVTeNbO <sub><i>x</i></sub> catalysts for the selective oxidation of propane to acrylic acid.</p>","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"206-213"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12042132/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HCl Treatment of Mixed-Phase MoVTeNbOx Catalysts for Enhanced Performance in Selective Oxidation of Propane 混合相MoVTeNbOx催化剂的HCl处理提高丙烷选择性氧化性能
Precision Chemistry Pub Date : 2025-01-30 DOI: 10.1021/prechem.4c0008910.1021/prechem.4c00089
Zeyue Wei, Hanzhi Zhang, Yunxing Bai, Xuanyu Zhang and Weixin Huang*, 
{"title":"HCl Treatment of Mixed-Phase MoVTeNbOx Catalysts for Enhanced Performance in Selective Oxidation of Propane","authors":"Zeyue Wei,&nbsp;Hanzhi Zhang,&nbsp;Yunxing Bai,&nbsp;Xuanyu Zhang and Weixin Huang*,&nbsp;","doi":"10.1021/prechem.4c0008910.1021/prechem.4c00089","DOIUrl":"https://doi.org/10.1021/prechem.4c00089https://doi.org/10.1021/prechem.4c00089","url":null,"abstract":"<p >Hydrothermally synthesized mixed-phase MoVTeNbO<sub><i>x</i></sub> catalysts are active for catalyzing the selective oxidation of propane to acrylic acid but suffer from the presence of the amorphous phase and low specific surface areas. Herein we report that HCl treatment preferentially dissolves the amorphous phase in hydrothermally synthesized mixed-phase MoVTeNbO<sub><i>x</i></sub> catalysts and increases the catalytic performance. An optimal HCl treatment significantly increases the C<sub>3</sub>H<sub>8</sub> conversion from 38.9% to 58.2% without changing the acrylic acid selectivity in the selective oxidation of propane to acrylic acid at 380 °C. The original and HCl treated catalysts exhibit similar apparent activation energies, while HCl treatment increases the specific surface area, surface acid sites, surface V<sup>5+</sup> density, and C<sub>3</sub>H<sub>8</sub> and C<sub>3</sub>H<sub>6</sub> irreversible adsorption amounts but decreases the C<sub>3</sub>H<sub>8</sub> and C<sub>3</sub>H<sub>6</sub> irreversible adsorption heats. The C<sub>3</sub>H<sub>8</sub> conversion rate is proportional to the surface V<sup>5+</sup> density and C<sub>3</sub>H<sub>8</sub> irreversible adsorption amount, and the TOF is measured as 3.31 ± 0.08 × 10<sup>–5</sup> s<sup>–1</sup> at 340 °C. Thus, HCl treatment enhances the catalytic performance of mixed-phase MoVTeNbO<sub><i>x</i></sub> catalysts mainly by increasing the active site density rather than by increasing the active site activity. Our results provide an effective approach to prepare highly active mixed-phase MoVTeNbO<sub><i>x</i></sub> catalysts for the selective oxidation of propane to acrylic acid.</p>","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"206–213 206–213"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision Chemistry Pub Date : 2025-01-27
Zheng Zhou*, Yong Yang*, Jianwei Liang, Sota Sato, Zhenyi Zhang and Zheng Wei, 
{"title":"","authors":"Zheng Zhou*,&nbsp;Yong Yang*,&nbsp;Jianwei Liang,&nbsp;Sota Sato,&nbsp;Zhenyi Zhang and Zheng Wei,&nbsp;","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 1","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144355809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision Chemistry Pub Date : 2025-01-27
Ryota Tajima, Keisuke Tanaka, Kazuhiro Aida, Eisuke Ota* and Junichiro Yamaguchi*, 
{"title":"","authors":"Ryota Tajima,&nbsp;Keisuke Tanaka,&nbsp;Kazuhiro Aida,&nbsp;Eisuke Ota* and Junichiro Yamaguchi*,&nbsp;","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 1","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144355808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision Chemistry Pub Date : 2025-01-27
Jui-Han Fu*, De-Chian Chen, Yen-Ju Wu and Vincent Tung*, 
{"title":"","authors":"Jui-Han Fu*,&nbsp;De-Chian Chen,&nbsp;Yen-Ju Wu and Vincent Tung*,&nbsp;","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 1","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144411210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision Chemistry Pub Date : 2025-01-27
{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 1","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/pcv003i001_1892592","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144355806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision Chemistry Pub Date : 2025-01-27
Dingfang Hu, Rongrong Huang* and Yu Fang*, 
{"title":"","authors":"Dingfang Hu,&nbsp;Rongrong Huang* and Yu Fang*,&nbsp;","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 1","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144411209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信