Materials Chemistry Frontiers最新文献

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Regulated dual defects of ligand defects and lattice defects in UIO-66 for ultra-trace simultaneous detection and removal of heavy metal ions† UIO-66中配体缺陷和晶格缺陷的调控双缺陷,用于超痕量同时检测和去除重金属离子†
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-12-06 DOI: 10.1039/D4QM00920G
Dahui An, Shan Jin, Junhua Zheng, Mubai Liao and Long Chen
{"title":"Regulated dual defects of ligand defects and lattice defects in UIO-66 for ultra-trace simultaneous detection and removal of heavy metal ions†","authors":"Dahui An, Shan Jin, Junhua Zheng, Mubai Liao and Long Chen","doi":"10.1039/D4QM00920G","DOIUrl":"https://doi.org/10.1039/D4QM00920G","url":null,"abstract":"<p >Exploring multifunctional absorbents for the concurrent detection and elimination of heavy metal ions (HMIs) presents a significant challenge. In this study, dual defective bimetallic metal–organic framework materials (D-D-UIO-66) are synthesized by the solvothermal method. The incorporation of an acid and Ce<small><sup>3+</sup></small> simultaneously introduces ligand defects and lattice defects, which provides a massive defective synergistic effect to enhance the intrinsic properties of D-D-UIO-66. D-D-UIO-66 can simultaneously detect Pb(<small>II</small>), Cd(<small>II</small>), Hg(<small>II</small>), and Cu(<small>II</small>), exhibiting high sensitivities of 15.209, 10.092, 2.829, and 1.347 μA μM<small><sup>−1</sup></small>, respectively. D-D-UIO-66 also demonstrate excellent stability and anti-interference capabilities, and it has been effectively applied in real water environments. On the other hand, D-D-UIO-66 can remove Pb(<small>II</small>) from the water environment and achieve a maximum adsorption of 667.04 mg g<small><sup>−1</sup></small>. The mechanisms behind the electrochemical detection and adsorption activities of D-D-UIO-66 are explored, which reveal that the synergistic interplay between distinct defects enhances the electronic microstructure, consequently boosting both electrochemical detection and adsorption capabilities. This study presents a strategy for multifunctional adsorbents, advancing the understanding of defect engineering and its influence on the fundamental mechanisms of material behavior.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 308-317"},"PeriodicalIF":6.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Piezoelectric catalysis for antibacterial applications 抗菌应用的压电催化
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-12-04 DOI: 10.1039/D4QM00848K
Fanqing Meng, Chenxi Guo, Tianchen Cui, Mingyang Xu, Xiaxia Chen, Hongwei Xu, Chao Liu and Shaowei Chen
{"title":"Piezoelectric catalysis for antibacterial applications","authors":"Fanqing Meng, Chenxi Guo, Tianchen Cui, Mingyang Xu, Xiaxia Chen, Hongwei Xu, Chao Liu and Shaowei Chen","doi":"10.1039/D4QM00848K","DOIUrl":"https://doi.org/10.1039/D4QM00848K","url":null,"abstract":"<p >Efficient conversion of mechanical energy to electrical energy through piezoelectric catalysis has found diverse applications, such as sterilization, water treatment, organic synthesis, and biomass conversion. Among these, antibacterial agents based on piezoelectrically active materials have emerged as promising alternatives to conventional antibiotics for the treatment of bacterial diseases and remediation of water pollution caused by bacterial pathogens, with no bacterial resistance and side effects because of their fast and effective bactericidal actions. Herein, the general mechanisms of piezoelectric catalysis are reviewed, and commonly used piezoelectric antibacterial agents are highlighted, including semiconductors (metal oxides, metal sulfides, and ceramics), heterojunction composites (<em>e.g.</em>, metal–semiconductor heterojunctions and semiconductor–semiconductor heterojunctions), and organic piezoelectric materials. Leading strategies for further enhancement of the materials’ piezoelectric properties are also discussed, such as doping, compositing, and structural coupling. We conclude the review with a summary of the remaining challenges and a perspective for future research.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 171-188"},"PeriodicalIF":6.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanogenerators with l-arginine loading: new choices as cascade and synergistic nitric oxide/photodynamic antitumor agents 负载l-精氨酸的纳米发生器:作为级联和协同的一氧化氮/光动力抗肿瘤剂的新选择
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-27 DOI: 10.1039/D4QM00851K
Yue Huang, Ziwei Wu, Hanyang Wang, Hao An, Jiabao Zhang and Zhihong Bao
{"title":"Nanogenerators with l-arginine loading: new choices as cascade and synergistic nitric oxide/photodynamic antitumor agents","authors":"Yue Huang, Ziwei Wu, Hanyang Wang, Hao An, Jiabao Zhang and Zhihong Bao","doi":"10.1039/D4QM00851K","DOIUrl":"https://doi.org/10.1039/D4QM00851K","url":null,"abstract":"<p >Photodynamic therapy (PDT) is widely used in tumor treatment because it has few side effects and good therapeutic specificity. However, its therapeutic effect is severely limited by the insufficient oxygen supply and high glutathione (GSH) concentration in the tumor environment. Recently, nitric oxide (NO) has been widely used as a physiological regulatory factor and tumor inhibitor in various pathological processes. NO can kill tumor cells by reacting with O<small><sub>2</sub></small>˙<small><sup>−</sup></small> to produce highly lethal ONOO<small><sup>−</sup></small>. Importantly, NO can promote vasodilation to improve hypoxia in the tumor environment and interfere with the antioxidant defense of GSH, improve the sensitivity of the tumor to ROS, and enhance the effect of PDT. However, since NO has a very short half-life and is gaseous, it cannot be used directly in the clinic. As a rule, the use of NO donors is required. <small>L</small>-Arginine (<small>L</small>-Arg) is a natural NO donor that can produce NO under the action of ROS, so that effective synergy of NO/PDT can be achieved by combining <small>L</small>-Arg and a photosensitizer. On this basis, cascade and synergistic NO/PDT antitumor therapy with <small>L</small>-Arg has been reported in recent years. However, a relevant review on cascade and synergistic NO/PDT based on the combination of <small>L</small>-Arg and photosensitizers has not been published. Therefore, in this review, we summarize the recent advances in synergistic NO/PDT for antitumor therapy based on the interaction of <small>L</small>-Arg and various photosensitizers in the last five years. The design idea, synergistic mechanism and application prospects of the two treatment methods are explained in detail. The remaining challenges and future opportunities in this field are also highlighted. We believe that this review will provide a better understanding of cascade and synergistic NO/PDT through multifunctional nanomaterials and advance nanoscience and nanotechnology step by step towards clinical applications.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 204-222"},"PeriodicalIF":6.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hydrophilic-Zn2+ conductive lanthanum phosphate interlayer toward ultra-long-life Zn anodes and zinc ion capacitors† 一种用于超长寿命锌阳极和锌离子电容器的亲水- zn2 +导电磷酸镧中间层
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-27 DOI: 10.1039/D4QM00868E
Yuequn Li, Yanjie Wang, Zhe Fang, Shaopei Jia, Xukai Wu, Zhiheng Wang, Kunyang Geng, Kongyao Chen, Yunchao Mu, Lin Zhang and Liwei Mi
{"title":"A hydrophilic-Zn2+ conductive lanthanum phosphate interlayer toward ultra-long-life Zn anodes and zinc ion capacitors†","authors":"Yuequn Li, Yanjie Wang, Zhe Fang, Shaopei Jia, Xukai Wu, Zhiheng Wang, Kunyang Geng, Kongyao Chen, Yunchao Mu, Lin Zhang and Liwei Mi","doi":"10.1039/D4QM00868E","DOIUrl":"https://doi.org/10.1039/D4QM00868E","url":null,"abstract":"<p >The detrimental interfacial side reactions and irregular Zn dendrites may reduce the cycling life of Zn anodes and Zn-based energy storage devices. Regulating the interfacial microenvironment to eliminate harmful side reactions and achieve uniform Zn deposition is vital to develop high-performance Zn anodes. Here, a “hydrophilic-Zn<small><sup>2+</sup></small> conductive” lanthanum phosphate (LaPO<small><sub>4</sub></small>) interlayer is applied to realize an ultra-long-life Zn anode (LAP-Zn) and Zn<small><sup>2+</sup></small> capacitors. The hydrophilic LaPO<small><sub>4</sub></small> can act as a microscopic “H<small><sub>2</sub></small>O-reservoir” by preferentially adsorbing H<small><sub>2</sub></small>O molecules (the adsorption energy of LaPO<small><sub>4</sub></small>–H<small><sub>2</sub></small>O is −1.17 eV, larger than that of Zn–H<small><sub>2</sub></small>O). Consequently, a microscopic H<small><sub>2</sub></small>O-poor environment on the Zn anode is formed, thus eliminating harmful side reactions including H<small><sub>2</sub></small> evolution and Zn corrosion. Simultaneously, Zn<small><sup>2+</sup></small> de-solvation is promoted, facilitating accelerated interfacial migration and uniform flux of Zn<small><sup>2+</sup></small>. The Zn<small><sup>2+</sup></small> migration number of LAP-Zn is 0.84 which is higher than that of pure Zn, demonstrating excellent Zn<small><sup>2+</sup></small> conductivity. The LAP-Zn//LAP-Zn symmetrical cell operates efficiently for over 700 h at 5 mA cm<small><sup>−2</sup></small> and 2 mA cm<small><sup>−2</sup></small>. The LAP-Zn//activated carbon capacitor exhibits an ultra-long life of 30 000 cycles at 1 A g<small><sup>−1</sup></small>, with continuous operation for over 3600 h while maintaining a capacity retention ratio of 95%. Therefore, this “hydrophilic-Zn<small><sup>2+</sup></small> conductive” LaPO<small><sub>4</sub></small> interlayer enables uniform Zn deposition and a highly reversible Zn plating/stripping process. This modification strategy using a “hydrophilic-Zn<small><sup>2+</sup></small> conductive” rare earth-based interfacial layer is simple, long-term effective, and microcosmic, thus boosting the commercial application of Zn-based energy storage devices.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 299-307"},"PeriodicalIF":6.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural modulation of NH4V4O10 cathode materials for low-temperature zinc-ion energy-storage devices 低温锌离子储能装置正极材料NH4V4O10的结构调制
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-26 DOI: 10.1039/D4QM00890A
Yaotong Li, Chunru Zhao, Wei Wang, Xiang Wu and Yudai Huang
{"title":"Structural modulation of NH4V4O10 cathode materials for low-temperature zinc-ion energy-storage devices","authors":"Yaotong Li, Chunru Zhao, Wei Wang, Xiang Wu and Yudai Huang","doi":"10.1039/D4QM00890A","DOIUrl":"https://doi.org/10.1039/D4QM00890A","url":null,"abstract":"<p >With the characteristics of nontoxicity and environmental benignity, aqueous zinc ion batteries (AZIBs) are rapidly emerging as potential competitors for high-performance energy-storage systems. Nevertheless, several issues hinder their further development, such as the sluggish electrochemical activity and inevitable dissolution of cathode materials. In this work, we introduced oxygen defects (O<small><sub>d</sub></small>) into the NH<small><sub>4</sub></small>V<small><sub>4</sub></small>O<small><sub>10</sub></small> lattice, which facilitated the transport velocity of Zn<small><sup>2+</sup></small> ions and enhanced their electrical conductivity. Zn//NHVO-O<small><sub>d</sub></small>-1 batteries showed a reversible capacity of 475.3 mA h g<small><sup>−1</sup></small> at 0.2 A g<small><sup>−1</sup></small>. At low temperature (0 °C), the cells also demonstrated a capacity retention of 100% after 1000 cycles at 1.0 A g<small><sup>−1</sup></small>. Assembled soft-package devices presented favorable mechanical resilience at different bending conditions.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 243-252"},"PeriodicalIF":6.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exogenous/endogenous stimuli-responsive nanocatalysts trigger in situ chemical reactions for tumor catalytic therapy: an up-to-date mini-review 外源性/内源性刺激反应纳米催化剂触发肿瘤催化治疗的原位化学反应:最新的迷你综述
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-26 DOI: 10.1039/D4QM00833B
Kaiyue Song, Cong Jiang, Shaorong Huang and Xianglong Li
{"title":"Exogenous/endogenous stimuli-responsive nanocatalysts trigger in situ chemical reactions for tumor catalytic therapy: an up-to-date mini-review","authors":"Kaiyue Song, Cong Jiang, Shaorong Huang and Xianglong Li","doi":"10.1039/D4QM00833B","DOIUrl":"https://doi.org/10.1039/D4QM00833B","url":null,"abstract":"<p >The principle of the nanocatalytic medicine strategy is introducing nanocatalysts into tumor tissues and triggering specific chemical reactions through endogenous/exogenous stimuli to convert low/non-toxic exogenously delivered or endogenous substances into therapeutic products with high cytotoxicity. In recent years, the nanocatalytic medicine strategy has been proven to be effective in achieving tumor catalytic therapy, which is expected to reduce side effects and decrease the occurrence of drug resistance. This mini-review briefly outlines typical applications and recent advances in nanocatalyst-triggered <em>in situ</em> chemical reactions in tumor catalytic therapy. Special attention is paid to the design of nanocatalysts related to endogenous and exogenous stimuli (<em>e.g.</em>, light, heat, ultrasound, <em>etc.</em>). Finally, challenges and future opportunities for advancing nanocatalysts are highlighted to facilitate the realization of early clinical applications of nanocatalytic medicine strategies.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 189-203"},"PeriodicalIF":6.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pyrene-based, red-emitting, aggregation-induced emission luminogens: from structural construction to anti-counterfeiting applications† 比利牛斯基,红色发光,聚集诱导发光:从结构建设到防伪应用†
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-25 DOI: 10.1039/D4QM00927D
Hua-Long Li, Zeng-Min Xue, Guang Yang, Fei Meng, Hong-Tao Lin, Wen-Xuan Zhao, Shu-Hai Chen and Chuan-Zeng Wang
{"title":"Pyrene-based, red-emitting, aggregation-induced emission luminogens: from structural construction to anti-counterfeiting applications†","authors":"Hua-Long Li, Zeng-Min Xue, Guang Yang, Fei Meng, Hong-Tao Lin, Wen-Xuan Zhao, Shu-Hai Chen and Chuan-Zeng Wang","doi":"10.1039/D4QM00927D","DOIUrl":"https://doi.org/10.1039/D4QM00927D","url":null,"abstract":"<p >Herein, we demonstrated a novel approach to construct pyrene-based, high-efficiency, red-emitting molecules. Both of the as-synthesized luminogens exhibited aggregation-induced enhanced emission (AIEE) properties and distinct mechanochromic behavior with a blue-shift for <strong>DCI-Py-1</strong> (13 nm) and red-shift for <strong>DCI-Py-2</strong> (29 nm). The typical, yet rare, pyrene-based, red-emitting molecules with <em>λ</em><small><sub>em</sub></small> = 686 nm open up new avenues to design near-infrared emitting pyrene-based photoelectric materials. Further studies revealed that both of these materials can be utilized for anti-counterfeiting stamps and fingerprint extraction.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 318-324"},"PeriodicalIF":6.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Near-infrared II photochromic behavior triggered by green light in an in situ protonated dithienylethene functionalized by quinoxalinone moieties† 由绿光触发的近红外II型光致变色行为在一个原位质子化二乙烯被喹啉酮基团功能化†
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-21 DOI: 10.1039/D4QM00719K
Ziyong Li, Jinzhao Song, Qilian Wang, Yongliang Feng, Qingxin Song, Sixin Wang, Qianqian Nie, Fan He, Haining Zhang and Hui Guo
{"title":"Near-infrared II photochromic behavior triggered by green light in an in situ protonated dithienylethene functionalized by quinoxalinone moieties†","authors":"Ziyong Li, Jinzhao Song, Qilian Wang, Yongliang Feng, Qingxin Song, Sixin Wang, Qianqian Nie, Fan He, Haining Zhang and Hui Guo","doi":"10.1039/D4QM00719K","DOIUrl":"https://doi.org/10.1039/D4QM00719K","url":null,"abstract":"<p >Exploiting the near-infrared (NIR) photochromic dithienylethenes (DTEs) triggered by visible light is urgently needed for various biological scenarios. However, all the NIR photochromic DTEs reported so far are located in the first NIR window (NIR-I, 700–900 nm), which usually shows shallower penetration in biological tissues due to autofluorescence and photon scattering compared to NIR light in the second window (NIR-II, 1000–1700 nm). Herein, we present a novel quinoxalinone-functionalized DTE derivative (<strong>QDTE</strong>) with acceptor (A)–DTE (D)–acceptor (A) structural features, in which electron-withdrawing quinoxalinone groups ensure visible light-driven NIR I photochromism. Besides, the facile protonation of the quinoxalinone moieties favors the formation of the more electron-deficient A′–D–A′-type DTE (<strong>QDTE-2H</strong>, where A′ is a stronger electron-withdrawing unit) for a unique NIR II photochromism by reducing the HOMO–LUMO energy gap of a closed isomer after protonation. As expected, the resulting <strong>QDTE</strong> displays a blue light-controlled NIR I photochromic performance in various solvents. Furthermore, an unprecedented green light-triggered NIR II photochromism for the <em>in situ</em> protonated <strong>QDTE-2H</strong> is successfully implemented in CHCl<small><sub>3</sub></small> and toluene in the presence of trifluoroacetic acid (TFA), representing the first case of NIR II photochromic DTE. By virtue of these properties, <strong>QDTE</strong> has been successfully applied in dual information encryption, demonstrating its versatility in functional materials.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 234-242"},"PeriodicalIF":6.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic enhancement of the electrocatalytic reduction of CO2 to hydrocarbons at a large-sized Cu@Ag electrode† 在大尺寸Cu@Ag电极†上对CO2电催化还原为碳氢化合物的协同增强作用
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-21 DOI: 10.1039/D4QM00819G
Ke-Ke Chang, Wan-Feng Xiong, Yu-Ting Wen, Bin-Bin Feng, Hong-Fang Li, Teng Zhang, Yuan-Biao Huang, Duan-Hui Si and Rong Cao
{"title":"Synergistic enhancement of the electrocatalytic reduction of CO2 to hydrocarbons at a large-sized Cu@Ag electrode†","authors":"Ke-Ke Chang, Wan-Feng Xiong, Yu-Ting Wen, Bin-Bin Feng, Hong-Fang Li, Teng Zhang, Yuan-Biao Huang, Duan-Hui Si and Rong Cao","doi":"10.1039/D4QM00819G","DOIUrl":"https://doi.org/10.1039/D4QM00819G","url":null,"abstract":"<p >The electrochemical CO<small><sub>2</sub></small> reduction reaction (CO<small><sub>2</sub></small>RR) underlies a strategic approach to energy and environmental challenges. Large-sized materials offer industrial scalability due to their simplicity and cost-effectiveness. However, traditional large-sized Cu catalysts preferentially catalyze the hydrogen evolution reaction (HER) over the CO<small><sub>2</sub></small>RR. Hence, the development of large-sized catalysts with enhanced reducibility is imperative for an efficient CO<small><sub>2</sub></small>RR. In this study, a large-sized Cu@Ag catalyst was designed using electrodeposition, which enhanced the CO<small><sub>2</sub></small>RR and suppressed the HER. The faradaic efficiency (FE) for hydrocarbons of the Cu@Ag catalyst was 59.8%, surpassing that of bare Cu nanoparticles by 21.4%. FE<small><sub>H<small><sub>2</sub></small></sub></small> was notably reduced to 31.6%, compared to 63.0% for Ag foil and 55.2% for bare Cu nanoparticles. Theoretical calculations indicated a reconfiguration of Cu 3d orbitals in the Cu@Ag catalyst. The d<small><sub><em>x</em><small><sup>2</sup></small>−<em>y</em><small><sup>2</sup></small></sub></small> orbital, being the highest occupied, modulated the affinity of CO<small><sub>2</sub></small> molecules and favored hydrocarbon formation. Additionally, the charge density at the Cu@Ag boundaries increased, facilitating C–C coupling. In particular, the C<small><sub>2</sub></small>H<small><sub>4</sub></small>/CH<small><sub>4</sub></small> ratio was enhanced by approximately 30-fold compared to using bare Cu nanoparticles. This study demonstrated that the synergistic mechanism of the Cu@Ag catalyst is key to enhancing the CO<small><sub>2</sub></small>RR and inhibiting the competing HER, thus elucidating the molecular mechanisms for the conversion of CO<small><sub>2</sub></small> into valuable chemicals using large-sized Cu-based catalysts.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 2","pages":" 271-279"},"PeriodicalIF":6.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New heater@luminescent thermometer nano-objects: Prussian blue core@silica shell loaded with a β-diketonate Tb3+/Eu3+ complex† 新型加热器@发光温度计纳米物体:负载有β-二酮酸 Tb3+/Eu3+ 复合物的普鲁士蓝芯@二氧化硅壳†。
IF 6 2区 材料科学
Materials Chemistry Frontiers Pub Date : 2024-11-20 DOI: 10.1039/D4QM00668B
Aurore Larquey, Houda Bellahsene, Gautier Félix, Mickaël Beaudhuin, Tristan Pelluau, Basile Bouvet, Yannick Guari, Saad Sene and Joulia Larionova
{"title":"New heater@luminescent thermometer nano-objects: Prussian blue core@silica shell loaded with a β-diketonate Tb3+/Eu3+ complex†","authors":"Aurore Larquey, Houda Bellahsene, Gautier Félix, Mickaël Beaudhuin, Tristan Pelluau, Basile Bouvet, Yannick Guari, Saad Sene and Joulia Larionova","doi":"10.1039/D4QM00668B","DOIUrl":"https://doi.org/10.1039/D4QM00668B","url":null,"abstract":"<p >We report on the synthesis and investigation of new multifunctional Prussian blue (PB) nanoparticles coated by a mesoporous silica shell and loaded with a luminescent [(Tb/Eu)<small><sub>9</sub></small>(acac)<small><sub>16</sub></small>(μ<small><sub>3</sub></small>-OH)<small><sub>8</sub></small>(μ<small><sub>4</sub></small>-O)(μ<small><sub>4</sub></small>-OH)]·H<small><sub>2</sub></small>O complex. These multifunctional nano-objects work as efficient photothermal nano-heaters able to provide macroscopic temperature rises remotely triggered by light irradiation at 808 nm (Δ<em>T</em> = 20.4 °C under irradiation for 3 min with a laser power of 1.83 W cm<small><sup>−2</sup></small>). Their specific heat capacity, the primary parameter influencing the heating properties of nanoparticles, was determined by using the photothermal properties and the measured heat capacity of PB nanoparticles, yielding a value of 1.13 ± 0.03 J g<small><sup>−1</sup></small> K<small><sup>−1</sup></small>. This moderate value indicates that once heated, the nanoparticles can retain heat effectively, making them suitable for applications requiring sustained and controlled thermal effects. On the other hand, these multifunctional nanoparticles exhibit the characteristic temperature-dependent luminescence of Tb<small><sup>3+</sup></small> and Eu<small><sup>3+</sup></small> with improved Tb<small><sup>3+</sup></small>-to-Eu<small><sup>3+</sup></small> energy transfer, making them efficient as luminescent ratiometric thermometers. These nanothermometers operate in the 20–80 °C range exhibiting a maximal relative thermal sensitivity of 0.75% °C<small><sup>−1</sup></small> at 20 °C.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 1","pages":" 131-146"},"PeriodicalIF":6.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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