Nano Materials Science最新文献_第2页

Architecting in-plane bicrystals in BiOCl nanosheets for enhanced photocatalytic performance 在BiOCl纳米片上构建平面内双晶以增强光催化性能

Nano Materials Science Pub Date : 2025-09-01 DOI: 10.1016/j.nanoms.2025.07.003

Tingfang Xie, Shaodong Sun, Fangyuan Wang, Meiqi Ding, Jie Cui

{"title":"Architecting in-plane bicrystals in BiOCl nanosheets for enhanced photocatalytic performance","authors":"Tingfang Xie, Shaodong Sun, Fangyuan Wang, Meiqi Ding, Jie Cui","doi":"10.1016/j.nanoms.2025.07.003","DOIUrl":"https://doi.org/10.1016/j.nanoms.2025.07.003","url":null,"abstract":"Interface engineering has emerged as an effective strategy for addressing challenges related to insufficient solar light harvesting and poor photocharge separation in photocatalysis. The distinctive in-plane homogeneous architecture offers the potential for significant enhancements in both photocharge separation and solar light absorption. Herein, a simple one-pot hydrothermal method was developed to construct in-plane homogeneous BiOCl bicrystals within BiOCl nanosheets (BOC-B). During this process, thiourea plays a pivotal role in introducing dislocations to form bicrystal structure. As expected, the synthesized BOC-B samples exhibited substantially higher photocatalytic degradation activity for TC and RhB compared to BOC. Notably, the mechanism underlying effective solar light absorption and charge carrier separation, driven by the homogeneous bicrystal structure, was elucidated through a series of experimental evidences. This work introduces a novel homogeneous bicrystal structure in BiOCl photocatalysts to optimize catalytic activity, providing a framework for developing new BiOCl-based photocatalysts. • In-plane BiOCl bicrystals were synthesized by a facile one-pot hydrothermal synthesis. • Defect engineering induced interfacial dislocations to form bicrystalline structures. • Dislocation-induced mid-gap states in BiOCl bicrystals can broaden visible light absorption. • In-plane bicrystalline architectures can enhance the electron mobility and charge separation. • The improved photocatalytic removal of TC and RhB was achieved.","PeriodicalId":69154,"journal":{"name":"Nano Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

COF coated Fe doped hollow carbon nanosphere for selective adsorption and photocatalytic reduction on dye pollutant by confinement effect in water management COF包覆Fe掺杂中空碳纳米球，利用约束效应对水中染料污染物进行选择性吸附和光催化还原

Nano Materials Science Pub Date : 2025-09-01 DOI: 10.1016/j.nanoms.2025.09.002

Lingling Yan, Keyu Long, Tianmi Wang, Luo-lin Deng, Linfu Li, Qing‐han Zhou

{"title":"COF coated Fe doped hollow carbon nanosphere for selective adsorption and photocatalytic reduction on dye pollutant by confinement effect in water management","authors":"Lingling Yan, Keyu Long, Tianmi Wang, Luo-lin Deng, Linfu Li, Qing‐han Zhou","doi":"10.1016/j.nanoms.2025.09.002","DOIUrl":"https://doi.org/10.1016/j.nanoms.2025.09.002","url":null,"abstract":"Herein, a novel covalent-organic framework (COF) coated Fe doped hollow carbon nanosphere (HCNS), Fe-HCNS@COF, was prepared for selective adsorption and photocatalytic reduction on dye pollutant in water. The Fe-HCNS@COF displays a high affinity to malachite green (MG) with a distribution coefficient ( K d ) of 6.931, which can be attributed to the confinement effect by the π−π stacking between the benzene ring in MG and triazine ring in COF. Pseudo second order (PSO) kinetics ( R 2 = 0.9914) and Langmuir isotherm model ( R 2 = 0.970 9) match better to Fe-HCNS@COF on MG adsorption indicating a chemisorption with mono-layer interface. Additionally, enhanced catalytic efficiency of the nanospheres on MG reduction at 96.3% was observed under sunlight irradiation with improved reusability after five cycles (74.4%). The catalytic mechanism investigation indicates that 1 O 2 , •O 2 − , and •OH play significant role in the catalytic process, and Fe-HCNS@COF exhibits a smaller E g at 1.53 eV compared to COF (1.86 eV), signifying enhancement for separation of hole-electron pairs. A continuous flow device was established to investigated the real application in dye removal, achieving an 88.7% removal rate for MG degradation after 40 h continuous operation. Moreover, an improved bacterial inhibition rate over 99% was found against both Gram-negative and Gram-positive bacteria. In conclusion, the as prepared Fe-HCNS@COF provides us a novel nano-platform with multiple-function for the potential application of dye removal in real water management.","PeriodicalId":69154,"journal":{"name":"Nano Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multi-functional W,N-co-doped nanoporous carbon contributes to high-performance Li-S batteries 多功能W， n共掺杂纳米多孔碳有助于高性能锂- s电池

Nano Materials Science Pub Date : 2025-07-01 DOI: 10.1016/j.nanoms.2025.06.003

Yang He, Qingling Ruan, Han Sol Kang, Ling Ye, Ya‐Xiong Wang, Tiefeng Liu, Hairong Cheng, Xingxing Gu

{"title":"Multi-functional W,N-co-doped nanoporous carbon contributes to high-performance Li-S batteries","authors":"Yang He, Qingling Ruan, Han Sol Kang, Ling Ye, Ya‐Xiong Wang, Tiefeng Liu, Hairong Cheng, Xingxing Gu","doi":"10.1016/j.nanoms.2025.06.003","DOIUrl":"https://doi.org/10.1016/j.nanoms.2025.06.003","url":null,"abstract":"Li-S batteries (LSBs), with their exceptional theoretical energy density, are widely recognized as a leading option for future energy storage solutions. Nevertheless, on the way to commercialization, the poor conductivity of the positive electrode, the easy dissolution loss of the active substance, and the serious dendrite growth of the negative electrode are stumbling blocks. Therefore, this work designs a novel tungsten and nitrogen-co-doped nanoporous carbon (W,N-C) with multifunction: chemically adsorbs the polysulfides to inhibit shuttling behavior, accelerates Li + transfer, and catalyzes polysulfides redox to address the aforementioned issues of LSBs. As expected at the beginning of the design, the prepared W,N-C-5/S composites cathodes demonstrate excellent performances, i.e., delivering an initial capacity of 944.9 mAh g −1 and a reversible capacity of 771.7 mAh g −1 after 500 cycles at 1 C, significantly outperforming the N-C/S contrast sample. The proposed method offers a feasible solution for boosting the electrochemical performance of LSBs. In this work, a multifunctional W, N co-doped porous carbon (W,N-C) was successfully synthesized using tungsten salt and ramie degumming waste, and used as a sulfur host to accelerate the redox of LiPSs and inhibit the shuttle of LiPSs. The prepared W,N-C-5/S composite cathode can maintain a high reversible capacity of 771.7 mAh g −1 after 500 cycles at a high discharge rate of 1.0C.","PeriodicalId":69154,"journal":{"name":"Nano Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Surface charge transfer adjustment from designing thin-layer structure targeted O2 adsorption and activation for deep NO oxidation on Bi2MoO6 通过设计薄层结构调整Bi2MoO6表面电荷转移，以O2吸附和活化深度NO氧化为目标

Nano Materials Science Pub Date : 2025-07-01 DOI: 10.1016/j.nanoms.2025.05.013

Hongjing Liu, Shan Ren, Xiaodi Li, Liang Wang, Bofeng Bai, Shouning Chai, Peng Chen, Fan Dong

{"title":"Surface charge transfer adjustment from designing thin-layer structure targeted O2 adsorption and activation for deep NO oxidation on Bi2MoO6","authors":"Hongjing Liu, Shan Ren, Xiaodi Li, Liang Wang, Bofeng Bai, Shouning Chai, Peng Chen, Fan Dong","doi":"10.1016/j.nanoms.2025.05.013","DOIUrl":"https://doi.org/10.1016/j.nanoms.2025.05.013","url":null,"abstract":"Photocatalytic oxidation of nitrogen oxides (NO x ) is a promising technology for environmental protection and green sustainable development. However, its practical application remains limited due to inefficient activation of NO and O 2 , stemming from inadequate structural design of photocatalysts. Herein, we developed a thin-layer two-dimensional (2D) material Bi 2 MoO 6 (BMO) via cetyl trimethyl ammonium chloride (CTAC) addition in synthesis process, which effectively modulates the surface electronic structure, enhance the light absorption and activation of NO and O 2 . This thin-layer Bi 2 MoO 6 nanosheets achieved a NO oxidation efficiency of 45.3 %, which was about 5.5 times that of traditional bulk BMO (8.2 %). Additionally, it demonstrated superior selectivity for NO 2 − /NO 3 − production (86.6 %) compared to bulk BMO (60.5 %) and significantly reduced the formation of toxic NO 2 byproducts (13.4 % vs. 39.5 %). Combining experimental characterizations and density functional theory (DFT) simulations, it demonstrated that the electron-hole pair separation could be promoted and targeted adsorption activation of O 2 can be enhanced to form superoxide radicals (•O 2 − ) and singlet oxygen ( 1 O 2 ) via the effect of surface charge transfer adjustment on the thin-layer structure of Bi 2 MoO 6 , which are key factors affecting the efficiency and selectivity of photocatalytic oxidation of NO. This work provides important insights into the formation of directed ROS and proposes a unique mechanism for selective NO oxidation.","PeriodicalId":69154,"journal":{"name":"Nano Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-barrier and corrosion-inhibiting epoxy composite coatings with mussel-inspired hexagonal boron nitride-based nanocontainers 以贻贝为灵感的六方氮化硼纳米容器的高阻隔和耐腐蚀环氧复合涂层

Nano Materials Science Pub Date : 2025-03-01 DOI: 10.1016/j.nanoms.2025.03.005

Mingjun Cui, Yequn Liu, Yiming Wu, Xinyu Chen, Siming Ren

{"title":"High-barrier and corrosion-inhibiting epoxy composite coatings with mussel-inspired hexagonal boron nitride-based nanocontainers","authors":"Mingjun Cui, Yequn Liu, Yiming Wu, Xinyu Chen, Siming Ren","doi":"10.1016/j.nanoms.2025.03.005","DOIUrl":"https://doi.org/10.1016/j.nanoms.2025.03.005","url":null,"abstract":"Hexagonal boron nitride (h-BN) nanosheets with high impermeability and electrical insulating properties present great value in improving the anti-corrosion properties of organic coatings. Yet, single h-BN incorporated organic coatings with only passive barrier properties fail to provide long-term corrosion protection upon damage without timely repairs. Thus, developing novel anti-corrosive coatings that combine exceptional passive barrier properties with active corrosion-inhibiting capabilities is particularly interesting. Herein, we synthesized h-BN-based nanocontainers by constructing a mesoporous polydopamine layer on the h-BN surface to encapsulate benzotriazole molecules (mBN@BTA), aiming to impart both physical barrier and corrosion-inhibiting effects to h-BN nanosheets. When mBN@BTA nanocontainers are incorporated into epoxy (EP) matrix, the resulting mBN@BTA/EP/steel system exhibits outstanding long-term protective performance under intact status and remarkable corrosion-inhibiting capabilities under damaged status, as demonstrated by high |Z| f = 0.01Hz value of 3.7 × 10 10 Ω cm 2 after 160 d of exposure in 3.5 wt% NaCl solution and low admittance value (7.59 × 10 −8 Ω −1 cm −2 ) in the damaged region. This work represents a significant advancement in the utilization of h-BN nanomaterials for anti-corrosion coatings.","PeriodicalId":69154,"journal":{"name":"Nano Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12