Science China Materials最新文献

{"title":"Constructing MXene quantum dots decorated covalent organic frameworks as oil-based lubricant additive","authors":"Yichen Wang \u0000 (,&nbsp;),&nbsp;Fei Zhao \u0000 (,&nbsp;),&nbsp;Haoyuan Yang \u0000 (,&nbsp;),&nbsp;Ke Yang \u0000 (,&nbsp;),&nbsp;Tianyi Zhang \u0000 (,&nbsp;),&nbsp;Qian Ye \u0000 (,&nbsp;),&nbsp;Yibo He \u0000 (,&nbsp;),&nbsp;Xuqing Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3250-x","DOIUrl":"10.1007/s40843-024-3250-x","url":null,"abstract":"<div><p>Nanoadditives offer a promising way to reduce friction and wear. In this study, an organic–inorganic hybrid material composed of MXene quantum dots (MQDs) and cetyl trimethylammonium bromide decorated covalent organic frameworks (CNUS-2) is successfully constructed via an electrostatic self-assembly strategy. The combination of MQDs and CNUS-2 not only increases the interlayer spacing of NUS-2 but also mitigates the self-aggregation of MQDs, maximizing the advantages of their intrinsic characteristics. Owing to the synergistic lubrication effect of zero-dimensional MQDs and two-dimensional NUS-2, improved lubricity and interfacial bonding ability are realized. In addition, the relative slip between the CNUS-2@MQDs sheets can reduce friction and anti-wear. As expected, different levels of CNUS-2@MQDs effectively boost the tribological properties. The friction coefficient (0.097) and wear volume (1.48×10⁵ µm³) of PAO-10 oil are reduced by 46.7% and 92.6% respectively, after the introduction of the 3.0 wt% CNUS-2@MQDs nanocomposite. Furthermore, the abundant oxygen-containing functional groups in CNUS-2 can accelerate the formation of adsorption and tribochemical reaction films, whereas the MQDs can repair worn surfaces, resulting in superior lubrication performance under variable load, temperature, and frequency conditions. This work not only effectively improves lubrication performance by developing a unique CNUS-2@MQDs nanocomposite, but also provides a reference for the design of novel lubricant additives.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1220 - 1229"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716779","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}

{"title":"A novel broadband near-infrared phosphor NaBaScSi2O7: Fe3+ and its application in pc-LED and night vision","authors":"Changshuai Gong \u0000 (,&nbsp;),&nbsp;Ziying Wang \u0000 (,&nbsp;),&nbsp;Jiantong Wang \u0000 (,&nbsp;),&nbsp;Xuyan Xue \u0000 (,&nbsp;),&nbsp;Xuejiao Wang \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3234-0","DOIUrl":"10.1007/s40843-024-3234-0","url":null,"abstract":"<div><p>In recent years, Fe³⁺-doped near-infrared (NIR) phosphors have garnered significant attention, primarily due to their non-toxic nature, long emission wavelength, and excellent thermal stability. In this work, a series of NaBaScSi₂O₇: <i>x</i>Fe³⁺ (<i>x</i> = 0.01–0.07) phosphors were synthesized by the conventional solid-state reaction method. The impact of Fe³⁺ doping on the bandgap of NaBaScSi₂O₇ was analyzed by diffuse reflectance spectroscopy (DRS) and first-principles calculations. Under excitation at 301 nm, the series of phosphors emitted broadband NIR luminescence at 815 nm with full width at half maximum (FWHM) of 116 nm. Varying-temperature testing of the NaBaScSi₂O₇: 0.03Fe³⁺ phosphor indicated that it can retain 46% of its room temperature luminescence intensity at 423 K. This excellent thermal stability is attributed to the small Huang-Rhys factor (<i>S</i>), which results in weak electron-phonon coupling. In addition, the NIR phosphor-converted light-emitting diode (NIR pc-LED) integrated from the NaBaScSi₂O₇: 0.03Fe³⁺ optimal phosphor and a 310 nm ultraviolet (UV) chip showed a superior night vision capability.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1074 - 1081"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716834","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}

{"title":"Photomechanical macroscopic movements driven by photoinduced topochemical [2 + 2] cycloaddition reaction in tridentate cyanostilbene","authors":"Hui Yu \u0000 (,&nbsp;),&nbsp;Shuyu Li \u0000 (,&nbsp;),&nbsp;Wenbo Wu \u0000 (,&nbsp;),&nbsp;Yutong Yao \u0000 (,&nbsp;),&nbsp;Jiaxuan Zhu \u0000 (,&nbsp;),&nbsp;Haoqiang Qi \u0000 (,&nbsp;),&nbsp;Ting Wang \u0000 (,&nbsp;),&nbsp;Xin Huang \u0000 (,&nbsp;),&nbsp;Na Wang \u0000 (,&nbsp;),&nbsp;Hongxun Hao \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3249-x","DOIUrl":"10.1007/s40843-024-3249-x","url":null,"abstract":"<div><p>Photomechanical crystals are capable of converting light energy into mechanical energy, making them as potential candidates for a wide range of applications in areas such as actuators, artificial muscles, and optical switches. In this work, we successfully synthesized a tridentate cyano styrene derivative molecule, (2<i>Z</i>,2′<i>Z</i>,2′<i>Z</i>)-3,3′,3′-(benzene-1,3,5-triyl)tris-(2-(4-(trifluoromethoxyl)ph-enyl)acrylonitrile) (C3-CF₃), along with its three different polymorphs. Both blocky Form I and sheet-like Form II, exhibit photosalient effects (ballistic splitting, moving, and jumping) under both ultraviolet and visible lasers. More importantly, they could even respond to sunlight and light-emitting diode white light with a subdued photomechanical response. ¹H nuclear magnetic resonance indicates that Form I and Form II undergo photo-induced [2 + 2] cycloaddition reactions under various light sources. The kinetic analysis of the photoreactions reveals that both polymorphs demonstrate rapid reaction kinetics and high photodimerization conversion when exposed to 420 nm visible laser, with conversions reaching 97.6% and 95.26% after 300 s of irradiation, respectively. Additionally, although the needle-shaped Form III of C3-CF₃ lacks photomechanical activity, it possesses notable mechanical flexibility. Finally, films composed of powders from Form I or Form II with poly(vinyl alcohol) were created, which were capable of controllable photo-induced bending.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1038 - 1046"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716781","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}

{"title":"Liposome of a synergistic combination of HDP-mimicking polymer and rifampicin for treating bacterial infections in aquaculture via oral administration","authors":"Haowen Yu \u0000 (,&nbsp;),&nbsp;Luhang Chen \u0000 (,&nbsp;),&nbsp;Yueming Wu \u0000 (,&nbsp;),&nbsp;Wenhui Dai \u0000 (,&nbsp;),&nbsp;Minzhang Chen \u0000 (,&nbsp;),&nbsp;Yuan Chen \u0000 (,&nbsp;),&nbsp;Longqiang Liu \u0000 (,&nbsp;),&nbsp;Jiangzhou Wang \u0000 (,&nbsp;),&nbsp;Xinqi Huang \u0000 (,&nbsp;),&nbsp;Kang Chen \u0000 (,&nbsp;),&nbsp;Runhui Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3254-y","DOIUrl":"10.1007/s40843-024-3254-y","url":null,"abstract":"<div><p>The extensive use of antibiotics in high-density aquaculture has accelerated the emergence of antibiotic-resistant bacteria. The presence of antibiotics in water and soil, and their transmission through the food chain exacerbate the pressures associated with antibiotic resistance, posing a significant threat to human health. Despite this challenge and serious issue, effective alternatives to antibiotics remain lacking. In this study, we report a potent synergistic effect between an HDP-mimicking polymer, ^DLLys₉₀-BLG₁₀, and rifampicin against <i>Vibrio</i> species. This synergistic combination substantially reduces the required dosage of rifampicin, thereby mitigating the risk of antibiotic resistance development and the release of rifampicin into water and soil. Furthermore, we developed a cell-penetrating peptide-modified liposome system that can co-encapsulate ^DLLys₉₀-BLG₁₀ and rifampicin, which exerts potent antibacterial activity against <i>Vibrio</i> both <i>in vitro</i> and <i>in vivo</i>, while maintaining bio-compatibility. Additionally, oral administration of CPP-Lip@Syn showed effective control of <i>Vibrio</i> infections. This strategy opens new avenues in exploring antibiotic alternatives in aquaculture and implies potential applications in aquaculture.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1259 - 1270"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716835","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}

{"title":"K3[HCO3]2F: a new deep-UV birefringent crystal exhibiting strong optical anisotropy","authors":"Wenbin Zhang \u0000 (,&nbsp;),&nbsp;Yabo Wu \u0000 (,&nbsp;),&nbsp;Zhihua Yang \u0000 (,&nbsp;),&nbsp;Shujuan Han \u0000 (,&nbsp;),&nbsp;Shilie Pan \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3256-2","DOIUrl":"10.1007/s40843-024-3256-2","url":null,"abstract":"<div><p>A fundamental challenge in investigating novel deep-ultraviolet (DUV) birefringent crystals with superior performance is to establish an optimal balance between the bandgap (&gt;6.2 eV) and birefringence (&gt;0.1@1064 nm) properties. In the case of carbonates, the relatively narrow bandgap makes a significant restriction on their potential applications in the DUV region. Herein, the highly electronegative F element and hydrogen bonding synergistically construct a novel carbonate fluoride, K₃[HCO₃]₂F. The coplanar arrangement of π-conjugated [HCO₃] triangles allows the compound to exhibit a large birefringence (0.165@532 nm). The UV cutoff edge of K₃[HCO₃]₂F is shorter than 188 nm, further indicating that K₃[HCO₃]₂F has a potential application in DUV region as the birefringent crystal. Theoretical calculations reveal that the isolated [HCO₃·F·HCO₃] block is the main cause of the birefringence.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 and Applications","pages":"1658 - 1664"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902769","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}

{"title":"Bioinspired supramolecular stress buffer between carbon fiber and epoxy resin for high interfacial performances and toughness of composites","authors":"Wei Sun \u0000 (,&nbsp;),&nbsp;Mingshuo Chen \u0000 (,&nbsp;),&nbsp;Hongtao Liu \u0000 (,&nbsp;),&nbsp;Yining Wang \u0000 (,&nbsp;),&nbsp;Yongping Hou \u0000 (,&nbsp;),&nbsp;Mingjie Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3243-0","DOIUrl":"10.1007/s40843-024-3243-0","url":null,"abstract":"<div><p>Carbon fiber reinforced polymer composites (CFRPs) possess contrastingly high strength but low toughness, which limits their application under special circumstances, such as high stress, cryogenic temperatures, or vibration. The chemical inertness and smooth surface of carbon fiber (CF) are the main reasons behind the low toughness of CFRPs, characterized by poor interfacial performances, including low strength and low toughness. Biological organisms possess structures or chemical compositions that contribute to exhibiting strong interfacial adhesions. Herein, we construct a mussels-inspired supramolecular stress buffer (i.e., Fe(III)-tannic acid buffer, Fe-TA buffer) on CF to distribute stress and improve the interfacial performances and toughness of CFRPs. The Fe-TA buffer can improve interfacial performances by rough biomimetic interfacial structure, introducing multiple supramolecular interfacial interactions and improving interfacial wettability, ultimately resolving the common issue of low toughness in the CFRPs. In the presence of Fe-TA buffer, the interfacial shear strength (IFSS) value and mode II critical strain energy release rate (<i>G</i>_IIC) value are enhanced by 17.0% and 41.8%, respectively. This research provides a design for a stress buffer between resin matrix and inorganic enhancer which results in high interfacial strength and toughness.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1230 - 1239"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716780","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}

{"title":"Coexisting ferro-antiferroelectricity in van der Waals NiI2","authors":"Je-Geun Park","doi":"10.1007/s40843-025-3263-2","DOIUrl":"10.1007/s40843-025-3263-2","url":null,"abstract":"","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 and Applications","pages":"1684 - 1685"},"PeriodicalIF":6.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902786","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}

{"title":"An editable yarn-based flexible supercapacitor and integrated self-powered sensor","authors":"Qiancheng Ma \u0000 (,&nbsp;),&nbsp;Zhaofa Zhang \u0000 (,&nbsp;),&nbsp;Lin Li \u0000 (,&nbsp;),&nbsp;Dongyang Zhang \u0000 (,&nbsp;),&nbsp;Wei Tian \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3261-2","DOIUrl":"10.1007/s40843-024-3261-2","url":null,"abstract":"<div><p>The rapid development of supercapacitors and wearable devices has allowed the construction of integrated self-powered wearable devices. However, most current research focuses on increasing supercapacitor capacity and the sensitivity of sensors, overlooking the self-powered and integration of one single device. In this study, the editable, flexible yarn-based supercapacitor (FYSC) and an integrated self-powered wearable sensor (SPWS) were constructed based on one yarn. The FYSC demonstrated adjustable capacitive behaviors by controlling the electrode reduction degree, electrode spaces, and integration. The supercapacitors exhibit a high specific capacitance of 1.82 F cm⁻³, 92.57% capacity retention after 5000 cycles, and stable performance under static and dynamic strain conditions. Additionally, the integrated SPWSs demonstrated the accuracy and sensitivity in discriminating bending magnitudes. The SPWSs further present the accuracy and stability in recognizing human physiological activities (joint motions of finger, wrist, knee, and elbow, respiration, and handwriting). The proposed strategy offers a practical approach to developing energy storage systems with customizable functionality. More importantly, the self-powered devices realized the integration of supercapacitors and sensors would facilitate the seamless integration of 1D functional yarns into wearable electronics.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1117 - 1128"},"PeriodicalIF":6.8,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716721","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}

{"title":"An energy-saving photo-rechargeable lithium-ion battery based on lead-free hybrid perovskite","authors":"Xiaojing Yin \u0000 (,&nbsp;),&nbsp;Guangran Di \u0000 (,&nbsp;),&nbsp;Ye Liu \u0000 (,&nbsp;),&nbsp;Guoqiang Wang \u0000 (,&nbsp;),&nbsp;Changhua Mi \u0000 (,&nbsp;),&nbsp;Yubo Kuang \u0000 (,&nbsp;),&nbsp;Xiaoqian Xiang \u0000 (,&nbsp;),&nbsp;Xin Sun \u0000 (,&nbsp;),&nbsp;Eran Edri,&nbsp;Xiaojun Lv \u0000 (,&nbsp;),&nbsp;Meicheng Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3225-3","DOIUrl":"10.1007/s40843-024-3225-3","url":null,"abstract":"<div><p>The development and utilization of clean energy have emerged as indispensable technologies within contemporary societal structures, and the development of photo-rechargeable lithium-ion batteries (PR-LIB) holds new promise for simultaneously eliminating solar energy volatility limitations and realizing battery self-charging. In this study, we present photoactive electrodes consisting of lead-free bismuth-based hybrid perovskite that combine the dual functions of photovoltaic conversion and energy storage. It was found that the PR-LIB based on this electrode increased the discharge capacity of the battery from 236.0 mA h g⁻¹ in the dark to 282.4 mA h g⁻¹ (a current density of 50 mA g⁻¹) with a growth rate of 19.7% under light conditions. The photogenerated carriers generated by the methylammonium bismuth iodide (MBI) effectively accelerated the charge transfer and lithium-ion diffusion, which contributed to the increase of the capacity and the decrease of the charge-transfer resistance. Furthermore, the charging potential decreased by 0.1 V (6% reduction in input power) while the discharging potential increased by 0.1 V (11.8% increase in output power) under light. This work demonstrates the potential of PR-LIB as an efficient, energy-saving battery in portable electronic devices.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1091 - 1099"},"PeriodicalIF":6.8,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716804","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}

{"title":"Single active-site catalysts constructed with nonpolar-bond linked covalent organic frameworks for oxygen reduction reaction","authors":"Fancheng Meng \u0000 (,&nbsp;),&nbsp;Xuewen Li \u0000 (,&nbsp;),&nbsp;Qizheng An \u0000 (,&nbsp;),&nbsp;Shuai Yang \u0000 (,&nbsp;),&nbsp;Zixing Zhang \u0000 (,&nbsp;),&nbsp;Qing Xu \u0000 (,&nbsp;),&nbsp;Bai Xue \u0000 (,&nbsp;),&nbsp;Xin Jin \u0000 (,&nbsp;),&nbsp;Fan Zhang \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3255-y","DOIUrl":"10.1007/s40843-024-3255-y","url":null,"abstract":"<div><p>Covalent organic frameworks (COFs) with polar linkages have been employed as metal-free catalysts for the oxygen reduction reaction (ORR). However, it is still a big challenge to precisely design or locate the catalytic sites for such kinds of COFs because their polar linkages always make some catalytic activity. In addition, the polar linkages are facile to bind with O₂ and oxygen-contained intermediates in the catalytic process, severely weakening the long-term stability of these COFs. In this work, we demonstrated the single metalfree catalytic sites based on the pyridine-cored COFs with nonpolar linkages (C=C bonds) to catalyze the ORR. The nonpolar linkages excluded their potential roles as catalytic sites and also circumvented the possible decomposition in the process of catalysis. By modulating the pyridine N with positive charges, the catalytic performance can be previously improved, because of the enhanced Lewis acidity of the carbon atoms next to the pyridine N, and thus favorable for the electrons transfer to the catalytic sites. The newly-synthesized charged COF showed high activity of a half-wave potential of 0.74 V with a mass activity of 4.34 A g⁻¹, which was 50 mV more positive and 1.63 times higher than those of the neutral COF. And the nonpolar linkages made the COFs display better long-term stability than other metal-free COFs. The theoretical calculation revealed that the ionization of pyridine promoted the formation of the intermediate OOH*, and thus improved the catalytic activity. This work gives us a new insight into designing single sites based on COFs.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1138 - 1144"},"PeriodicalIF":6.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716954","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}