Rongbin He , Weiwei Jiang , Zishan Yang , Xueyou Gao , Hang Zhang , Xiangxu Zeng , Yuhao He , Jiajin Wei , Congbin Zeng , Jin Xiao , Zhihao Yue , Fugen Sun
{"title":"Graphene-like MoS2/C sandwiched-structures for kinetic acceleration of polysulfide conversion in LiS batteries","authors":"Rongbin He , Weiwei Jiang , Zishan Yang , Xueyou Gao , Hang Zhang , Xiangxu Zeng , Yuhao He , Jiajin Wei , Congbin Zeng , Jin Xiao , Zhihao Yue , Fugen Sun","doi":"10.1016/j.jcis.2025.138497","DOIUrl":"10.1016/j.jcis.2025.138497","url":null,"abstract":"<div><div>Graphene-like MoS<sub>2</sub>/C composites with sandwiched-structures have been fabricated through a facile hydrothermal process and subsequent annealing treatment, which are used to modify separators for Li<img>S batteries. The sandwiched carbons could not only generate fast electronic conducting channels between MoS<sub>2</sub> layers to endow MoS<sub>2</sub>/C with high conductivity, but also prevent MoS<sub>2</sub> layers from re-stacking to obtain few- or single-layered MoS<sub>2</sub> with large amounts of active-sites for polysulfide adsorption and electro-catalysis. Therefore, the MoS<sub>2</sub>/C composites could effectively promote the polysulfide conversion and Li<sub>2</sub>S deposition, and the MoS<sub>2</sub>/C modified polypropylene (MoS<sub>2</sub>/C@PP) separators could greatly prohibit the polysulfide shuttling to enhance the electrochemical performances of Li<img>S batteries. The Li<img>S batteries equipped with MoS<sub>2</sub>/C-3@PP separators at an optimized MoS<sub>2</sub> content deliver a high reversible capacity of 1262 mAh g<sup>−1</sup> at the 1st cycle and outstanding cycling stability with 791, 763 and 722 mAh g<sup>−1</sup> after 100 cycles at 0.2C, 0.5C and 1C, respectively. Furthermore, the MoS<sub>2</sub>/C-3@PP separators could help the Li<img>S pouch cells possessing high-areal-loading S/C cathodes and lean electrolytes to exhibit better electrochemical performances. These encouraging results suggest that the sandwich-structured composites constructed by graphene-like transition-metal dichalcogenides (TMDs) and carbon layers could be a type of promising catalyst for advanced Li<img>S batteries.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138497"},"PeriodicalIF":9.4,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713881","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}
Zhitao Wang , Fuhao Zhang , Song Chen , Miao Tian , Liyuan Wang , Weicheng Zhu , Manyu Ji , Haifa Zhai , Dengke Zhao
{"title":"Cation regulation-induced enhancement of dual conductivity facilitating high-stability sodium storage","authors":"Zhitao Wang , Fuhao Zhang , Song Chen , Miao Tian , Liyuan Wang , Weicheng Zhu , Manyu Ji , Haifa Zhai , Dengke Zhao","doi":"10.1016/j.jcis.2025.138493","DOIUrl":"10.1016/j.jcis.2025.138493","url":null,"abstract":"<div><div>Transition-metal sulfides (TMSs) have been demonstrated to be heartening anodes for sodium-ion batteries because of their alterable nanostructures, large theoretical capacity and environmental friendliness. Nevertheless, the insufficient electronic and ionic conductivities of TMSs result in inferior rate performance and cycling durability, which poses a major obstacle to their rapid commercialization. Herein, we propose a cation regulation strategy to modulate the electronic structure of CuS. DFT calculations combined with kinetics analyses demonstrate that cationic substitution optimizes the electronic structure of Cu<sub>1-x</sub>W<sub>x</sub>S, thus endowing with superior charge transfer kinetics and low ion diffusion barrier. As anticipated, Cu<sub>1-x</sub>W<sub>x</sub>S exhibits a remarkable reversible capacity (369.0 mAh g<sup>−1</sup> at 0.3 A g<sup>−1</sup> after 500 cycles), excellent rate capability and high-rate cycling stability (324.2 mA h g<sup>−1</sup> at a high current density of 5.0 A g<sup>−1</sup> after 1400 cycles). Besides, a stepwise reaction process is revealed by ex-situ investigations. This work presents a promising heteroatom-engineering approach to enhance electrode structures for next-generation energy storage applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138493"},"PeriodicalIF":9.4,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144671077","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}
Jiaying Chang , Man Wang , Junrong Wang , Guoqing Zhu , Yulin Xie , Yanrong Qian , Qianqian Sun , Chunxia Li
{"title":"Generation of personalized whole tumor cells vaccine for pyroptosis-enhanced anticancer immunity via Cu2-xSe photothermal activation under NIR irradiation","authors":"Jiaying Chang , Man Wang , Junrong Wang , Guoqing Zhu , Yulin Xie , Yanrong Qian , Qianqian Sun , Chunxia Li","doi":"10.1016/j.jcis.2025.138488","DOIUrl":"10.1016/j.jcis.2025.138488","url":null,"abstract":"<div><div>Autologous tumor cells demonstrate considerable promise as individualized therapeutic vaccines owing to their endogenous neoantigen repertoire. Nevertheless, their suboptimal immunogenicity substantially impedes clinical translation. Herein, we engineered an innovative whole tumor cell vaccine platform utilizing photothermal Cu<sub>2-</sub><sub>x</sub>Se nanoparticles, which encapsulate comprehensive tumor-associated antigens and intrinsic immunostimulatory molecules to elicit a polyvalent antitumor immune response. In this work, Cu<sub>2-x</sub>Se was applied to prepare the whole tumor cell vaccine for the first time. As a pyroptosis inducer, Cu<sub>2-x</sub>Se triggered the expression of damage-associated molecular patterns (DAMPs) as endogenous adjuvants in 4T1 cells (mouse breast cancer cells) under near-infrared (NIR) irradiation. Repeated freeze-thaw cycles inactivated and lysed Cu<sub>2-x</sub>Se-loaded 4T1 cells, releasing DAMPs for laser-activated Cu<sub>2-x</sub>Se-based whole tumor cell vaccine (LC-TCV) preparation. Mild photothermal therapy (PTT) at the vaccination site by NIR irradiation effectively suppressed tumor growth. This efficacy was primarily attributed to the synergistic effects of multiple natural antigens and adjuvants in LC-TCV, which promoted dendritic cells (DCs) maturation and subsequent immune activation. Consequently, it potentiates the recruitment of cytotoxic T lymphocytes, elicits immunogenic cell death (ICD), and consequently initiates a potent antigen-specific immune cascade. Collectively, this study presents an innovative approach to unleash the potential of personalized whole tumor cell vaccines in cancer therapy.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138488"},"PeriodicalIF":9.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672157","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}
Mengli Zhang , Haihan Song , Yaoqian Feng , Zhefeng Qian , Ning Huang , Zhengwei Mao , Weijun Tong
{"title":"A near-infrared light responsive nanoheterojunction for antibacterial and anti-inflammatory applications through programmed ROS regulation","authors":"Mengli Zhang , Haihan Song , Yaoqian Feng , Zhefeng Qian , Ning Huang , Zhengwei Mao , Weijun Tong","doi":"10.1016/j.jcis.2025.138489","DOIUrl":"10.1016/j.jcis.2025.138489","url":null,"abstract":"<div><div>Reactive oxygen species (ROS) play a fundamental role in antibacterial therapeutic strategies. However, excessive ROS generation can disrupt redox homeostasis and induce a severe inflammatory response, causing immense stress on surrounding cells and tissues. Herein, an intelligent nanoheterojunction established with Prussian blue (PB) and manganese polyphthalocyanine (MnPPc), PB@MnPPc (PM), was established to achieve sequential antibacterial and anti-inflammatory functions <em>via</em> controllable ROS regulation. With spatiotemporal control of near-infrared (NIR, 808 nm) light, PM demonstrates the potential for on-demand generation and scavenging of ROS. When exposed to NIR irradiation, PM exhibits prominent bactericidal abilities, which result from its augmented singlet oxygen generation capacity and photothermal effects. These advantages originate from the narrow band gap as well as the enhanced electron-hole separation and transfer efficiency enabled by its unique heterostructure. Upon cessation of NIR irradiation, PM efficiently achieves ROS elimination and inflammation alleviation through its superior superoxide dismutase-like and catalase-like activities. <em>In vivo</em> studies in a mouse <em>Staphylococcus aureus</em>-infected skin wound model further confirmed the superior therapeutic effects of PM, which effectively eliminated bacteria, relieved inflammation, promoted collagen deposition, and angiogenesis. This work provides an attractive therapeutic modality for equipping nanoheterojunctions with antibacterial and anti-inflammatory properties through programmed ROS regulation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138489"},"PeriodicalIF":9.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695158","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}
{"title":"Amorphous FePO4-anchored three-dimensional macro-porous Ti3C2Tx for superior capacitive deionization and sodium-ion selectivity","authors":"Aniu Qian , Runze Zhao , Anning Song , Hu Shi","doi":"10.1016/j.jcis.2025.138485","DOIUrl":"10.1016/j.jcis.2025.138485","url":null,"abstract":"<div><div>Faradaic capacitive deionization (CDI), which exploits pseudo-capacitive electrodes, is an appealing water-purification candidate from low-salinity desalinated water due to its fast Faradaic electro-sorption and ion intercalations. However, current Faradaic CDI faces the challenge in low salt adsorption capacity and poor selective sodium-ion (Na<sup>+</sup>) applicability. Herein, amorphous ferric phosphate (FePO<sub>4</sub>)-anchored on three-dimensional macro-porous Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> network (3D FePO<sub>4</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) electrode is proposed without scarifying Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> electronic conductivity, wherein sodium-ion captured FePO<sub>4</sub> provided abundant Na<sup>+</sup> adsorption site for enhancing desalination capacity and Na<sup>+</sup> selectivity. Simultaneously, highly-interconnected channels accelerated electron/ion transport to enable effective Na<sup>+</sup> intercalation in electro-sorption. Accordingly, the assembled FePO<sub>4</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>//activated carbon (AC) asymmetric CDI device delivered a typical Na<sup>+</sup>-intercalated behavior with high desalination capacity of 65 mg g<sup>−1</sup>, in which electric current generation could power a blue light-emitting diode (LED) screen. Importantly, the asymmetric CDI device enabled an evident Na<sup>+</sup> selectivity over the Al<sup>3+</sup> with high separator factor up to 6.3 in binary mixture feed of Na<sup>+</sup> and Al<sup>3+</sup>. This study offers a new idea to achieve high desalination performance and sodium-ion selectivity via 3D framework supported ions-capture structure in seawater desalination.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138485"},"PeriodicalIF":9.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679740","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}
Harrison Porritt , Anaïs Chalard , Juliette Fitremann , Jitendra Mata , Jenny Malmström
{"title":"Small and ultra small angle neutron scattering on pure and supramolecular composite GelMA hydrogels","authors":"Harrison Porritt , Anaïs Chalard , Juliette Fitremann , Jitendra Mata , Jenny Malmström","doi":"10.1016/j.jcis.2025.138443","DOIUrl":"10.1016/j.jcis.2025.138443","url":null,"abstract":"<div><div>Development of highly sophisticated tissue-engineered models capable of eliciting specific health and disease states could revolutionise disease treatment. To accomplish this it requires the generation of highly sophisticated hydrogel/biomaterial systems, including materials with tuneable properties and multiscale architecture composed of structures with different sizes ranges. In developing such systems, it is crucial to quantify any structures and interactions in the nano- and micron-scale range, to determine how these systems may affect cell phenotype. Small and ultra-small angle neutron scattering were used to quantify the structure of two biomaterials previously used in tissue engineering techniques. Gelatin methacryloyl (GelMA) is a commonly used hydrogel for tissue engineering and it has already been established that its Young's modulus can be tuned by controlling the crosslinking density. In this work, neutron scattering showed that there is little difference between the mesh size/fibre spacing (4.7 nm–4.5 nm) in 9.1 % w/v, soft (7.3 kPa ± 2.2 kPa), low crosslinked GelMA hydrogels and stiff (30.5 kPa ± 3.5 kPa), highly crosslinked GelMA hydrogels. However, stiff GelMA hydrogels showed the formation of dense highly crosslinked aggregates with a size of 8.0 nm that were not seen in the soft GelMA hydrogels. Neutron scattering was also performed on newly developed composite hydrogels consisting of GelMA (polymer chain radius 0.7 nm) embedded with significantly larger supramolecular fibres made from stacked bilayers of N-heptyl-galactonamides. Previously characterised pure galactonamide fibres were confirmed to have a thickness of 128 nm with a repeatable stacking/bilayer thickness of 3.7 nm. Incorporation of such large galactonamide fibres within the GelMA led to no disruption of the GelMA network.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138443"},"PeriodicalIF":9.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711120","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}
Yifan Li , Jesús. M. Marcos , Mark Fasano , Javier Diez , Linda J. Cummings , Lou Kondic , Ofer Manor
{"title":"Using wetting and ultrasonic waves to extract oil from oil/water mixtures","authors":"Yifan Li , Jesús. M. Marcos , Mark Fasano , Javier Diez , Linda J. Cummings , Lou Kondic , Ofer Manor","doi":"10.1016/j.jcis.2025.138442","DOIUrl":"10.1016/j.jcis.2025.138442","url":null,"abstract":"<div><div>Oil and water placed atop of a solid surface respond differently to a MHz-level surface acoustic wave (SAW) propagating in the solid due to their different surface wetting properties. We observe that, under SAW excitation, oil films, whether non-organic silicon oil or organic sunflower oil, are extracted continuously from sessile drops, comprising emulsions of the oil in question in a solution of water and surfactants. The mechanism responsible for the extraction of oil from the mixtures is the <em>acoustowetting</em> phenomenon: the low surface tension oil phase leaves the mixture in the form of ‘fingers’ that, away from the drop, spread opposite the path of the SAW. The high surface tension water phase remains at rest. Increasing either the SAW intensity or the oil content in the mixture enhances the rate at which oil leaves the emulsion. We further observe acoustic-capillary flow instabilities at the free surface of the oil film and the formation of spatial gradients in the emulsion oil-concentrations in the presence of SAW. Our study suggests the potential for using SAW for heterogeneous removal of oil from oil-in-water mixtures to complement current phase separation methods.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138442"},"PeriodicalIF":9.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679741","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}
{"title":"Ionolamellar liquid crystal of G-quadruplex in a protic ionic liquid","authors":"Zeyi Wang, Yuzhen Qian, Ping Qi, Aixin Song, Jingcheng Hao","doi":"10.1016/j.jcis.2025.138479","DOIUrl":"10.1016/j.jcis.2025.138479","url":null,"abstract":"<div><h3>Hypothesis</h3><div>G-quadruplex structures, assembled from guanosine (G) or its derivatives, are significant for their close association with biological processes and their capacity to serve as good templates for constructing functional materials, but the research and applications of G-quadruplex structures are mainly confined to aqueous solutions (in water).</div></div><div><h3>Experiments</h3><div>We report the experimental evidence of an ionolamellar liquid crystal of G-quadruplex assembled from underivatized guanosine, induced by metal ions (K<sup>+</sup>, Na<sup>+</sup>, Ca<sup>2+</sup> and Sr<sup>2+</sup>) in a protic ionic liquid (ethylammonium nitrate). The stacking mode of G-quartets varies with borate ester content and the ratio of borate ester to guanosine (<em>R</em><sub>B/G</sub>) for K<sup>+</sup>, while remaining unchanged for Na<sup>+</sup>. For Ca<sup>2+</sup> and Sr<sup>2+</sup>, the stacking mode is also changed by excess divalent metal ions, leading to chiral inversion with changing concentrations of guanosine, and exhibiting strong affinity for borate ester to stabilize G-quadruplex. Ionolamellar liquid crystal displays ionic conductivity, κ = 7.20 and 9.96 mS·cm<sup>−1</sup> for mono-and di-valent ions, respectively.</div></div><div><h3>Findings</h3><div>These results advance our understanding of the structures of G-quadruplex and the role of dynamic borate esters in ILs, and may offer a new option to design the ionolamellar liquid crystal and electrolytes for biomedical devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138479"},"PeriodicalIF":9.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695141","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}
Xiaobo Wang , Anru Yan , Ling Zhu , Yanping Yuan , Tian Lan , Xuesheng Liu , Zhiyong Wang
{"title":"Revealing electric field on low temperature ammonia decomposition activity over ceria-supported catalyst","authors":"Xiaobo Wang , Anru Yan , Ling Zhu , Yanping Yuan , Tian Lan , Xuesheng Liu , Zhiyong Wang","doi":"10.1016/j.jcis.2025.138480","DOIUrl":"10.1016/j.jcis.2025.138480","url":null,"abstract":"<div><div>Ammonia decomposition is a promising strategy to address critical challenges in hydrogen storage and transportation, thereby facilitating the widespread adoption of fuel-cell technologies. However, conventional catalytic require harsh conditions (600 °C) for complete conversion. In this study, we report nanocluster Ru/CeO<sub>2</sub> and Ni/CeO<sub>2</sub> catalysts integrated with electric field-assisted catalysis to achieve efficient ammonia decomposition under significantly milder conditions (≤400 °C). With electric field, Ru/CeO<sub>2</sub> and Ni/CeO<sub>2</sub> achieve 100 % and 60 % conversion at 400 °C, and maintain 62 % and 15 % conversion even at 150 °C accompanied by substantial reductions in activation energy (79.5 % and 78.9 %, respectively). Long-term stability tests reveal minimal activity loss (<3 %) over 48 h. Mechanistic studies show that the electric field promotes the formation of Ru-O-Ce bonds, thereby enhancing the strong metal-support interaction (SMSI). This facilitates electron transfer from CeO<sub>2</sub> to the metal site, enhancing NH<sub>3</sub> adsorption and activation, while weakening the interaction between metal and N to promote N<sub>2</sub> desorption. Additionally, electric field-induced proton hopping accelerates hydrogen spillover and suppresses hydrogen poisoning. This work provides a new approach for low temperature, high efficiency ammonia decomposition, offering a viable path for next-generation hydrogen energy infrastructure.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138480"},"PeriodicalIF":9.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695145","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}
Jing Cao , Jiahao Li , Zhiying Sun , Haixu Cui , Shuangming Wang , Qianqian Song , Xiao Dong , Zixuan Zhang , Zhixu Ye , Xiaoxue Xu , Yao Wang
{"title":"Localized surface plasmon resonance effect dominates room temperature formaldehyde gas sensor with ultra-high sensitivity and selectivity","authors":"Jing Cao , Jiahao Li , Zhiying Sun , Haixu Cui , Shuangming Wang , Qianqian Song , Xiao Dong , Zixuan Zhang , Zhixu Ye , Xiaoxue Xu , Yao Wang","doi":"10.1016/j.jcis.2025.138477","DOIUrl":"10.1016/j.jcis.2025.138477","url":null,"abstract":"<div><div>Universal sensitivity and high operating temperature have always been the serious problems faced by semiconductor based gas sensors in practical applications. The use of photoelectric and Localized Surface Plasmon Resonance (LSPR) effects can replace heating to provide energy to electrons. However, the differences between electrons generated by photoelectirc effect and LSPR effect, as well as the impact of these differences on gas sensing performance are still unclear. In this work, gold and silver modified In<sub>2</sub>O<sub>3</sub> nanocubes are designed and employed as a gas sensor to study the above issues. The gas sensing characteristics under different wavelengths of light are researched. A room temperature natural light assisted gas sensor with high sensitivity and selectivity has been obtained. The key factors affecting selectivity are discussed in details and it is innovatively discovered that selectivity is closely related to the conduction band edge energy levels of sensitive materials. In addition, it is revealed that the reason why the LSPR effect improves gas sensing performance is that the increased electrons in the conduction band come from metal particles, thereby reducing the electron hole recombination rate. Density functional theory (DFT) is employed to provide theoretical support for the proposal. This work opened up a new strategy for the development of room temperature high performance gas sensors.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 ","pages":"Article 138477"},"PeriodicalIF":9.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695146","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}