Journal of Colloid and Interface Science最新文献_第8页

Dual-upregulation of p53 for self-sensitized cuproptosis via microwave dynamic and NO gas therapy

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-23 DOI: 10.1016/j.jcis.2025.137421

Yuxin Wang , Qiong Wu , Wenna Guo , Zengzhen Chen , Longfei Tan , Changhui Fu , Xiangling Ren , Jiqing Zhang , Xianwei Meng , Bin Gu

{"title":"Dual-upregulation of p53 for self-sensitized cuproptosis via microwave dynamic and NO gas therapy","authors":"Yuxin Wang , Qiong Wu , Wenna Guo , Zengzhen Chen , Longfei Tan , Changhui Fu , Xiangling Ren , Jiqing Zhang , Xianwei Meng , Bin Gu","doi":"10.1016/j.jcis.2025.137421","DOIUrl":"10.1016/j.jcis.2025.137421","url":null,"abstract":"<div><div>Cuproptosis—a novel cell death mechanism—is an innovative strategy for tumor therapy. However, the insufficient efficacy of cuproptosis, primarily owing to the low sensitivity of tumor cells to Cu ions, remains a major challenge. In this study, we design TiCuMOF@PEG@<span>l</span>-Arg@TPP (TCPAT) nanoparticles to facilitate self-sensitized cuproptosis for anti-tumor therapy through the dual upregulation of p53. TiMOF serves as a microwave sensitizer by generating reactive oxygen species (ROS). Notably, the uniformly distributed Cu ions within the MOF serve as co-catalysts to provide reactive sites that enhance ROS generation. Additionally, the ROS generated are utilized to oxidize <span>l</span>-arginine, thus resulting in the release of nitric oxide (NO), which has a long half-life and diffusion distance, thereby enabling it to penetrate deep into the tumor regions that are typically inaccessible to ROS. Furthermore, TCPAT not only induces cuproptosis but also leverages the efficiently generated ROS and cascade-released NO for the dual upregulation of p53. This upregulation subsequently inhibits glycolysis, increases cellular sensitivity to Cu ions, and facilitates self-sensitized cuproptosis. Consequently, the self-sensitized cuproptosis strategy, dependent on the efficient generation of ROS, presents a promising avenue for tumor therapy based on cuproptosis mechanisms.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137421"},"PeriodicalIF":9.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A Nd-doped NiCo spinel dual functional catalyst for both oxygen reduction reactions and oxygen evolution reactions: Enhanced activity through surface reconstruction

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137411

Tao Li , Lili Bo , Xiaolin Guan , Kun Jiang , Yun-Quan Liu , Jinhui Tong

{"title":"A Nd-doped NiCo spinel dual functional catalyst for both oxygen reduction reactions and oxygen evolution reactions: Enhanced activity through surface reconstruction","authors":"Tao Li , Lili Bo , Xiaolin Guan , Kun Jiang , Yun-Quan Liu , Jinhui Tong","doi":"10.1016/j.jcis.2025.137411","DOIUrl":"10.1016/j.jcis.2025.137411","url":null,"abstract":"<div><div>The design of efficient, low-cost, highly active and thermally stable electrocatalysts is critical for both oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). While some spinel metal oxides exhibit good activities for either ORR or OER, a bifunctional spinel metal oxide that can provide decent activities for both ORR and OER would be most desirable. To date, rare earth metal-modified spinel oxides have not been well-studied, but they are thought to be able to boost both ORR and OER simultaneously. Hence, a Nd-doped NiCo<sub>2</sub>O<sub>4</sub> catalyst was synthesized in this work to evaluate its potential for improving both ORR and OER reactions. We hypothesized that this catalyst would be a viable option, as the highly oxidized Co<sup>4+</sup> (hydroxycobalt oxide) generated from surface reconstruction could be an active site for OER while Ni<sup>2+</sup> is intrinsically an active site for ORR. Amazingly, our study revealed that the addition of Nd in spinel metal oxides was able to inhibit the formation of Co<sup>4+</sup> at low potentials while the Ni species promoted the formation of Co<sup>4+</sup> from Co<sup>2+</sup>, thus achieving a balance between Co<sup>2+</sup> and Co<sup>4+</sup> which resulted in a multi-step oxidation process of Co<sup>2+</sup> → Co<sup>3+</sup> → Co<sup>4+</sup>. In addition, by tuning the amount of Nd doped, an optimum electrocatalyst Nd<sub>0.1</sub>Ni<sub>0.9</sub>Co<sub>2</sub>O<sub>4</sub> with excellent activities for both ORR (i.e. the half-wave potential E<sub>1/2</sub> = 0.735 V) and OER (i.e. the overpotential at 10 mA cm<sup>−2</sup> E<sub>10 mA·cm</sub><sup>−2</sup> = 302 mV) in alkaline conditions was developed. In summary, this work may have opened a new pathway for applying spinel metal oxides as bifunctional catalysts in future commercial ORR and OER processes.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137411"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Remineralization constructs stable surfaces to enhance the cycling stability of Li-rich Mn-based cathode

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137420

Jing-Zhe Wan , Chao Ma , Liang Gao , Kai-Xue Wang , Jie-Sheng Chen

{"title":"Remineralization constructs stable surfaces to enhance the cycling stability of Li-rich Mn-based cathode","authors":"Jing-Zhe Wan , Chao Ma , Liang Gao , Kai-Xue Wang , Jie-Sheng Chen","doi":"10.1016/j.jcis.2025.137420","DOIUrl":"10.1016/j.jcis.2025.137420","url":null,"abstract":"<div><div>Li-rich layered oxides (LRMs) cathode materials offer excellent initial energy density due to the contribution of cation/anion redox chemistry. However, during the cycling process, the irreversible phase transitions occurred in the materials lead to rapid degradation of voltage and capacity. To address this issue, we adopted a modification method by treating the surface of LRMs with carbon–fluorine surfactants, combined with high-temperature calcination to enhance the stability of the surface structure. The results indicate that the modified material exhibits improved cycle stability. After 300 cycles at 1C (1C = 250 mA g<sup>−1</sup>), the capacity retention rate reaches 91.7 %, and the voltage decay is effectively suppressed. The improved electrochemical performance is attributed to the formation of strong transition metal-fluorine (TM-F) bonds, which inhibit the TM migration and maintain the intact layered structure during cycling. This strategy provides a new path for efficient surface structure modification of high-energy–density cathodes.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137420"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ultrathin lithium chalcogenide-based nanohybrid SEI layer for suppressing lithium dendrite growth and polysulfide shuttle in Li-S batteries

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137419

Minhyuck Park , Jimin Park , Son Ha , Yeong Hoon Heo , Jisoo Kim , Jong Chan Hyun , Jin Hwan Kwak , Jeonghun Lee , Se Youn Cho , Hyoung-Joon Jin , Young Soo Yun

{"title":"Ultrathin lithium chalcogenide-based nanohybrid SEI layer for suppressing lithium dendrite growth and polysulfide shuttle in Li-S batteries","authors":"Minhyuck Park , Jimin Park , Son Ha , Yeong Hoon Heo , Jisoo Kim , Jong Chan Hyun , Jin Hwan Kwak , Jeonghun Lee , Se Youn Cho , Hyoung-Joon Jin , Young Soo Yun","doi":"10.1016/j.jcis.2025.137419","DOIUrl":"10.1016/j.jcis.2025.137419","url":null,"abstract":"<div><div>To advance high-energy–density Li–S batteries, it is crucial to develop strategies that enhance the energy efficiency, power capability, and cycle stability of both lithium metal anodes (LMAs) and sulfur cathodes (SCs). This study introduces an ultra-thin (∼60 nm) lithium telluride (<em>t</em>-Li<sub>2</sub>Te) layer on a conventional polypropylene (PP) separator, designed to improve the Coulombic efficiency (CE) and cycling stability of LMAs and SCs. The <em>t</em>-Li<sub>2</sub>Te layer features a nanoporous structure of aggregated Li<sub>2</sub>Te nanoparticles, with nanopores filled by solid-electrolyte interface (SEI) materials during initial lithium deposition. This <em>t</em>-Li<sub>2</sub>Te-SEI nanohybrid layer significantly enhanced CE for LMA, reaching maximum capacity within four cycles with only 25 % total capacity loss, contrasting with a 210 % capacity loss over ten cycles in the bare PP-based anode without <em>t</em>-Li<sub>2</sub>Te. In high cut-off capacity tests (4 mA h cm<sup>−2</sup>), the <em>t</em>-Li<sub>2</sub>Te-based system achieved stable cycling over 350 cycles, extending cycle life tenfold compared to the bare PP-based anode. For SC applications, the <em>t</em>-Li<sub>2</sub>Te-SEI nanohybrid layer attained an initial CE of 98.3 %, notably higher than that (93.1 %) of the reference system. After 100 cycles, the <em>t</em>-Li<sub>2</sub>Te-based SC system retained 85 % capacity, showing a 20 % improvement over systems without the nanohybrid layer.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137419"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Low-voltage flexible organic transistors utilizing passivated polyelectrolyte dielectrics for tactile sensing and braille recognition

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137417

Xiaoyan Wang , Zhigang Yin , Changdong Liu , Yuting Liu , Yunlong Ma , Qingdong Zheng

{"title":"Low-voltage flexible organic transistors utilizing passivated polyelectrolyte dielectrics for tactile sensing and braille recognition","authors":"Xiaoyan Wang , Zhigang Yin , Changdong Liu , Yuting Liu , Yunlong Ma , Qingdong Zheng","doi":"10.1016/j.jcis.2025.137417","DOIUrl":"10.1016/j.jcis.2025.137417","url":null,"abstract":"<div><div>Organic field-effect transistors (OFETs) utilizing polyelectrolyte dielectrics offer low-power operation and good signal amplification, making them well suited to pressure sensor applications. However, pristine polyelectrolyte dielectrics suffer from high leakage currents and instability under device operation. Here, we develop novel passivated polyelectrolyte dielectrics to enhance electrical performance of low-voltage flexible OFETs, achieving the reduced hysteresis and the significantly improved mobility from 0.04 to 1.17 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>. The optimized OFETs with passivated polyelectrolyte dielectrics are integrated as flexible pressure sensors, affording high sensitivity (297.2 kPa<sup>−1</sup>) at −2 V, wide response range (0–70.1 kPa), and fast response in milliseconds. Inspired by human skin, the OFET pressure sensor successfully simulates biological synaptic behaviors, including excitatory postsynaptic currents, paired-pulse facilitation, and the transition from short-term memory to long-term memory, which are crucial for processing complex signals. Furthermore, intelligent touch recognition of braille characters with an accuracy of ∼98% is achieved by designing the low-voltage OFET pressure sensor array and combining it with algorithms. These results provide new insights into advanced dielectrics and low-power OFET sensors for potential applications in skin-like artificial synapses, and human–machine interaction systems.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137417"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Nanoarchitecture tailoring of biomass-derived bowl-shaped carbon superstructures-based LiOH-LiCl composite for low-grade solar heat harvesting

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137415

Xiangyu Yang , Shijie Li , Baopeng Ding , Jianguo Zhao , Yisong Yu

{"title":"Nanoarchitecture tailoring of biomass-derived bowl-shaped carbon superstructures-based LiOH-LiCl composite for low-grade solar heat harvesting","authors":"Xiangyu Yang , Shijie Li , Baopeng Ding , Jianguo Zhao , Yisong Yu","doi":"10.1016/j.jcis.2025.137415","DOIUrl":"10.1016/j.jcis.2025.137415","url":null,"abstract":"<div><div>The fussy and toxic building process of 3D carbon superstructures with expensive precursors has critically encumbered their topological versatility and application territory broadening. Herein, an innovative bowl-shaped carbon superstructure was fabricated via a straightforward and eco-friendly double-template methodology in the aqueous environments using naturally available and cost-effective biomass. And its carbonaceous derivative (BBAC) served as the skeleton matrix for thermochemical adsorption heat storage (TAHS) material for the first time. At low ambient humidity, LiOC3/BBAC2 composites present prospective hydratability and heat storage capacity (HSC) up to 1379.6 kJ kg<sup>−1</sup> empowered by the collaborative effort between BBAC2 features exquisite 3D bowl-shaped architecture, delicately engineered hierarchical porosity stretching cross-scale pores, exceptionally approachable surface area and hygroscopic salt hybrids of LiOH-LiCl. Meanwhile, the LiOC3/BBAC2-60 could hold 96.1 % of the initial HSC after 20 thermal storage cycles while showing impressive solar-heat conversion properties arising from the fine thermal conductivity of BBAC2, manifesting its superb cycling consistency. And the numerical simulation findings endorse its great heat transfer properties. This work not only delivers concise and green inspirational approaches to the exploration of anisotropic 3D carbon superstructures with well-orchestrated morphologies and desirable functionalities but may also provide a favorable option for the productive transformation and storage of low-grade energy.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137415"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Spatially synthesized fluorine-modified graphene improves double times higher capacitance than theoretical capacitance of graphene in alkaline medium

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137418

Limin Wang , Zhenxiang Chen , Yongchun Liu , Rajkumar Devasenathipathy , Dan Li , Dujuan Huang , Qiulan Huang , Liujie Lu , Ziyi Huang , Du-Hong Chen , Youjun Fan , Wei Chen

{"title":"Spatially synthesized fluorine-modified graphene improves double times higher capacitance than theoretical capacitance of graphene in alkaline medium","authors":"Limin Wang , Zhenxiang Chen , Yongchun Liu , Rajkumar Devasenathipathy , Dan Li , Dujuan Huang , Qiulan Huang , Liujie Lu , Ziyi Huang , Du-Hong Chen , Youjun Fan , Wei Chen","doi":"10.1016/j.jcis.2025.137418","DOIUrl":"10.1016/j.jcis.2025.137418","url":null,"abstract":"<div><div>The practically low energy density limits the large-scale application of graphene in supercapacitors. Here, we propose a space-confined method for the preparation of fluorine-modified graphene (FG) by using fluorine-containing groups (PF<sub>6</sub><sup>–</sup> or BF<sub>4</sub><sup>–</sup>) as co-intercalated ions and reactants. The semi-ionic C–F bonds in FG contribute a brilliant capacitive performance in both acidic and alkaline electrolytes. Particularly, in alkaline medium, the FG electrode exhibited an ultrahigh specific capacitance (1210 F g<sup>−1</sup>), surpassing 2 orders of the theoretical capacitance value of graphene. Meanwhile, the FG-assembled symmetrical supercapacitor device (FG-SSD) possesses ultrahigh energy density (418.7 Wh kg<sup>−1</sup>) and power density (2 kW kg<sup>−1</sup>) in acidic medium, highlighting the practical application of supercapacitors. Theoretical calculations revealed an increased electrochemical double layer capacitance and amplified the electrochemical window of FG-SSD. This work demonstrates a spatially confined method for the preparation of functional graphene and its spectacular potential for supercapacitor-related electronics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137418"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Red-emitting carbon dots for fabrication of high-quality white LEDs with a color rendering index of 97

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-22 DOI: 10.1016/j.jcis.2025.137416

Fanghao Wang, Kexin Wang, Ruifang Guan, Hao Zhang

{"title":"Red-emitting carbon dots for fabrication of high-quality white LEDs with a color rendering index of 97","authors":"Fanghao Wang, Kexin Wang, Ruifang Guan, Hao Zhang","doi":"10.1016/j.jcis.2025.137416","DOIUrl":"10.1016/j.jcis.2025.137416","url":null,"abstract":"<div><div>Red-emitting carbon dots (R-CDs), a novel class of environmentally benign, non-toxic, and pollution-free nanomaterials, have garnered considerable attention in the field of solid-state white light-emitting diodes (WLEDs) owing to their exceptional optical properties. Herein, we synthesized R-CDs-1 with a 671 nm emission using a simple solvent thermal method employing pyromellitic acid and 1,8-diaminonaphthalene as precursors. Structural characterization and density functional theory (DFT) simulations were employed to demonstrate that the reduction in the bandgap due to structural changes leads to a redshift in the emission spectrum of R-CDs-1. By blending R-CDs-1 with commercial phosphors, high-quality WLEDs were successfully fabricated, achieving a high color rendering index (CRI) of 97, approaching the highest reported values to date. Compared to other works, the prepared WLED exhibited a color temperature closer to natural light, offering superior performance for practical illumination. This work significantly contributes to elucidating the red emission mechanism of carbon dots and advances the application of R-CDs in the development of environmentally friendly, non-toxic, high-quality white light illumination devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137416"},"PeriodicalIF":9.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Boosting photocatalytic oxygen reduction to hydrogen peroxide via chemisorbed oxygen activation on polydopamine-coated zinc oxide

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-21 DOI: 10.1016/j.jcis.2025.137370

Shuai Dou , Yuming Dong , Yaning Zhang , Yunhang Shao , Hongyan Liu , Yongfa Zhu , Chengsi Pan

{"title":"Boosting photocatalytic oxygen reduction to hydrogen peroxide via chemisorbed oxygen activation on polydopamine-coated zinc oxide","authors":"Shuai Dou , Yuming Dong , Yaning Zhang , Yunhang Shao , Hongyan Liu , Yongfa Zhu , Chengsi Pan","doi":"10.1016/j.jcis.2025.137370","DOIUrl":"10.1016/j.jcis.2025.137370","url":null,"abstract":"<div><div>Harnessing solar energy to produce hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) from water (H<sub>2</sub>O) and dioxygen (O<sub>2</sub>) via artificial photosynthesis is an attractive route. However, the production of H<sub>2</sub>O<sub>2</sub> is significantly hindered by slow mass transfer, primarily due to the low solubility and diffusion coefficient of O<sub>2</sub> in water, particularly when the oxygen reduction reaction (ORR) predominates. To tackle this challenge, we propose that the polydopamine-coated zinc oxide nanoparticle with oxygen vacancies (PDA@ZnO<sub>1−x</sub>) core–shell photocatalyst exhibits excellent oxygen adsorption capability and promotes the two-electron reduction of O<sub>2</sub>. In-situ Electron paramagnetic resonance (EPR) and O<sub>2</sub>-Temperature-programmed desorption (TPD) confirmed that the semiquinone radicals (SQ•) within the PDA shell effectively chemisorb oxygen. Notably, PDA@ZnO<sub>1−x</sub> exhibited a high H<sub>2</sub>O<sub>2</sub> production rate of 3.40 mM/h under visible light and an apparent quantum efficiency of 44.1 % at 400 nm. This work presents a significant strategy for improving oxygen utilization to achieve efficient photocatalytic production of H<sub>2</sub>O<sub>2</sub>.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137370"},"PeriodicalIF":9.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Phase-engineered metal boride nanobeads for highly efficient oxygen evolution

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-03-21 DOI: 10.1016/j.jcis.2025.137409

Meijia Liu , Lin Wu , Yafeng Li , Shuai Chen , Yuhang Lei , Zhuang Huo , Lin Tao , Lixiang Li , Chengguo Sun , Han Zhang , Baigang An

{"title":"Phase-engineered metal boride nanobeads for highly efficient oxygen evolution","authors":"Meijia Liu , Lin Wu , Yafeng Li , Shuai Chen , Yuhang Lei , Zhuang Huo , Lin Tao , Lixiang Li , Chengguo Sun , Han Zhang , Baigang An","doi":"10.1016/j.jcis.2025.137409","DOIUrl":"10.1016/j.jcis.2025.137409","url":null,"abstract":"<div><div>Non-precious metals with tailored phase structures show promise as oxygen evolution reaction (OER) catalysts due to their high inherent catalytic activity and extensive exposed active surface area. However, the mechanisms by which phase structures enhance catalytic performance remain unclear. Herein, we synthesized an amorphous cobalt boride (CoB) catalyst via a magnetic field-assisted method, yielding uniform nanoparticles that self-assemble into a nanobead structure. This material undergoes heat treatment to transition from an amorphous phase to a crystalline phase. The catalyst demonstrated exceptional OER activity and long-term stability in an alkaline electrolyte, requiring only 350 mV overpotential at 10 mA cm<sup>−2</sup>. The amorphous CoB demonstrates remarkable durability by maintaining stable operation for 100 h under harsh conditions characterized by high alkalinity and elevated temperature without any observable performance degradation. We demonstrate that electrochemical activation of an amorphous catalyst can unveil active sites within the bulk material, leveraging the short-range order characteristic of amorphous structures. This process significantly amplifies the active site density, consequently enhancing the electrocatalytic performance of the amorphous catalyst in the oxygen evolution reaction within water oxidation. Furthermore, in situ Raman spectroscopy reveals that amorphous CoB rapid self-reconstruction upon electrochemical activation, leading to the formation of a metal (oxy)hydroxide active layer. This study offers valuable insights into the design of high-efficiency OER catalysts by elucidating the mechanisms underlying amorphous and crystalline materials.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137409"},"PeriodicalIF":9.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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