Materials Research Bulletin最新文献_第6页

Fluorescence-based single-sensor platform using polymer-coated CdSe/ZnS quantum dots for discrimination of isoniazid, hydrazine, lactose, and pharmaceutical tablets 基于荧光的单传感器平台，利用聚合物包被CdSe/ZnS量子点对异烟肼、肼、乳糖和药物片剂进行鉴别

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.materresbull.2026.113990

Masoumeh Hasani, Fereshteh Emami

{"title":"Fluorescence-based single-sensor platform using polymer-coated CdSe/ZnS quantum dots for discrimination of isoniazid, hydrazine, lactose, and pharmaceutical tablets","authors":"Masoumeh Hasani, Fereshteh Emami","doi":"10.1016/j.materresbull.2026.113990","DOIUrl":"10.1016/j.materresbull.2026.113990","url":null,"abstract":"<div><div>We present a single-sensor, fluorescence-based platform using amphiphilic polymer-coated CdSe/ZnS quantum dots (PMA-QDs) for detection of isoniazid (INH), hydrazine (HZ), lactose (LAC), their mixtures, and commercial tablet formulations. The PMA-QDs exhibit distinct fluorescence quenching patterns upon interaction with each analyte, creating unique molecular fingerprints. Chemometric analysis with principal component analysis (PCA), linear discriminant analysis (LDA), and hierarchical clustering analysis (HCA) enabled accurate discrimination of individual compounds, mixtures, and tablet formulations, achieving 100% classification in leave-one-out cross-validation. The system showed high sensitivity to hydrazine, a toxic INH metabolite, detecting its formation under thermal stress and simulated in vitro metabolism. Furthermore, PMA-QDs distinguished between commercial INH tablet brands, demonstrating potential for quality control. Correlations between redox potentials and quenching efficiencies were observed, providing insight into the sensing mechanism. This versatile, multiplexed approach offers a practical strategy for drug screening, diagnostics, and metabolite monitoring in complex matrices.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113990"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Multiwavelength light emission of undoped SnO2 layers as a result of defect engineering 缺陷工程导致未掺杂SnO2层的多波长光发射

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-25 DOI: 10.1016/j.materresbull.2025.113978

Poting Liu , Anjana Baby , Anna Makarova , Mohammed Adel Aly , Stefan Brackmann , David C. Grinter , Pilar Ferrer , Martin Koch , Vaidas Klimkevičius , Vladimir Sivakov

{"title":"Multiwavelength light emission of undoped SnO2 layers as a result of defect engineering","authors":"Poting Liu , Anjana Baby , Anna Makarova , Mohammed Adel Aly , Stefan Brackmann , David C. Grinter , Pilar Ferrer , Martin Koch , Vaidas Klimkevičius , Vladimir Sivakov","doi":"10.1016/j.materresbull.2025.113978","DOIUrl":"10.1016/j.materresbull.2025.113978","url":null,"abstract":"<div><div>Multiwavelength light emission was observed in undoped tin oxide thin films deposited by metal-organic chemical vapor deposition at temperatures ranging from 700 °C to 800 °C. This work presents the relationship between the presence and nature of defects in undoped SnO<sub>2</sub> thin films and their emission properties. Blue and orange emissions were observed on SnO<sub>2</sub> thin films using a He-Cd laser and an Xe lamp at an excitation wavelength of 325 nm, respectively. Systematic characterization and analysis techniques, including low-temperature photoluminescence at temperatures ranging from 77 K to 298 K and surface-sensitive techniques using brilliant synchrotron radiation facilities, were applied to elucidate the features and origin of emission in undoped SnO<sub>2</sub> layers. Based on our results, surface and bulk oxygen and interstitial tin defects play an important role in multi-wavelength emission processes and can be separately activated by controlling the applied light source.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113978"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Statistical physics, mechanisms, and reuse potential of an adsorbent from volcanic rock powder towards metals and dyes 火山岩粉末吸附剂对金属和染料吸附的统计物理、机理和再利用潜力

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-28 DOI: 10.1016/j.materresbull.2025.113983

Ana Carolina Ferreira Piazzi Fuhr , Jandira Leichtweis , Diovani Leindecker Rossato , Fernando Machado Machado , Salah Knani , Luis Felipe Oliveira Silva , Tito J. Crissien , Guilherme Luiz Dotto

{"title":"Statistical physics, mechanisms, and reuse potential of an adsorbent from volcanic rock powder towards metals and dyes","authors":"Ana Carolina Ferreira Piazzi Fuhr , Jandira Leichtweis , Diovani Leindecker Rossato , Fernando Machado Machado , Salah Knani , Luis Felipe Oliveira Silva , Tito J. Crissien , Guilherme Luiz Dotto","doi":"10.1016/j.materresbull.2025.113983","DOIUrl":"10.1016/j.materresbull.2025.113983","url":null,"abstract":"<div><div>In this study, an integrated approach was employed that combines experimental adsorption techniques with a theoretical analysis based on statistical physics models, allowing a structurally detailed interpretation of the interactions between the proposed adsorbent and the different classes of pollutants, as metals (Ag⁺<sub>(aq)</sub> and Cu²⁺<sub>(aq)</sub>), and organic dyes (acid green 16 and acid red 97). Maximum adsorption capacities reached 70.81 mg g⁻¹ for Ag⁺, 71.93 mg g⁻¹ for Cu²⁺, 197.01 mg g⁻¹ for acid green 16, and 194.33 mg g⁻¹ for acid red 97, confirming the material's high uptake potential. Adsorption energies confirmed physical adsorption mechanisms. The material achieved removal efficiencies of over 90% for all contaminants and retained more than 85% efficiency after 5 regeneration cycles. These findings demonstrate the potential of statistical physics models for the detailed characterization of molecular interactions in adsorption systems for metals and dyes, contributing to understanding the removal mechanisms of these emerging contaminants.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113983"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Role of annealing temperature and Bi3+ doping concentration on the photoluminescence properties of La4Ga2O9 phosphor for high quantum yield 退火温度和Bi3+掺杂浓度对高量子产率La4Ga2O9荧光粉光致发光性能的影响

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-22 DOI: 10.1016/j.materresbull.2025.113971

Babiker M Jaffar , Vinod Kumar , R.E. Kroon , Rudolph M. Erasmus , Odireleng Martin Ntwaeaborwa

{"title":"Role of annealing temperature and Bi3+ doping concentration on the photoluminescence properties of La4Ga2O9 phosphor for high quantum yield","authors":"Babiker M Jaffar , Vinod Kumar , R.E. Kroon , Rudolph M. Erasmus , Odireleng Martin Ntwaeaborwa","doi":"10.1016/j.materresbull.2025.113971","DOIUrl":"10.1016/j.materresbull.2025.113971","url":null,"abstract":"<div><div>Enhanced blue photoluminescence was observed from La<sub>4-x</sub>Ga<sub>2</sub>O<sub>9</sub>:Bi<sub>x</sub> powder phosphors prepared using a sol-gel combustion procedure with citric acid serving as the fuel. The doping concentration of Bi<sup>3+</sup> was varied according to x = 0, 0.001, 0.005, 0.01, 0.015, 0.02, 0.025, and 0.03 and the materials were heated between 800 to 1400°C in air in increments of 100°C. X-ray diffraction analysis verified that the La<sub>4</sub>Ga<sub>2</sub>O<sub>9</sub> phosphors crystallized in a single monoclinic phase, suggesting that smaller concentrations of Bi<sup>3+</sup> ions substituted La<sup>3+</sup> without altering the main structure, a phenomenon attributed to their similar ionic radii. Diffuse reflectance spectroscopy indicated four absorption bands. Those located at 257 and 321 nm were assigned to transitions of Bi<sup>3+</sup> ions, the band at 285 nm was due to defect states in Bi clusters, and the band near 230 nm was attributed to absorption above the band gap. The La<sub>4</sub>Ga<sub>2</sub>O<sub>9</sub> bandgap was determined from the reflectance data to be 5.16 eV. Under 321 nm excitation, a broad blue fluorescence was observed at 455 nm. The emission intensity varied with Bi³⁺ concentration with a maximum for the sample having x = 0.02. For this sample the internal and external quantum yields were 95% and 27%, respectively, suggesting potential for applications in the lighting industry.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113971"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Novel sustainable choline chloride-free deep eutectic solvents: Preparation and physicochemical evaluation 新型可持续无氯化胆碱深度共晶溶剂：制备及理化评价

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-13 DOI: 10.1016/j.materresbull.2025.113948

Tahereh Javanmard, Morteza Jabbari, Sayyed Ahmad Nabavi-Amri, Azam Jabbari

{"title":"Novel sustainable choline chloride-free deep eutectic solvents: Preparation and physicochemical evaluation","authors":"Tahereh Javanmard, Morteza Jabbari, Sayyed Ahmad Nabavi-Amri, Azam Jabbari","doi":"10.1016/j.materresbull.2025.113948","DOIUrl":"10.1016/j.materresbull.2025.113948","url":null,"abstract":"<div><div>Deep eutectic solvents (DESs), a class of liquid mixtures formed through strong hydrogen-bond interactions between a hydrogen bond acceptor (HBA) and a hydrogen bond donor (HBD), have emerged as environmentally friendly and versatile alternatives to conventional organic solvents. In the present study, several novel choline-chloride-free DESs (i.e., DESs prepared without using the conventional HBA choline chloride) were developed to provide more cost-effective and accessible options compared to traditional choline-chloride-based systems. The solvents were prepared by combining N,N-dimethylaniline hydrochloride, where the chloride anion (Cl<sup>-</sup>) functions as the HBA, with urea, whose N–H groups act as the HBDs, at molar ratios of 2:1, 1:1, and 1:2. The prepared DESs were characterized using Differential Scanning Calorimetry (DSC) and Fourier-Transform Infrared Spectroscopy (FT-IR). DSC analysis confirmed significant melting-point depression relative to the pure constituents, while the FT-IR spectra confirmed hydrogen-bond formation, as evidenced by the redshift of the N-H stretching band of urea from 3448 cm<sup>-1</sup> to 3340-3200 cm<sup>-1</sup> in the prepared DESs and the shift of the C=O band from 1680 cm<sup>-1</sup> to approximately 1728-1732 cm<sup>-1</sup>, accompanied by an increase in peak intensity. Furthermore, key physicochemical properties (including density, refractive index, specific conductivity, and dielectric constant) were measured at room temperature and atmospheric pressure. The results were interpreted based on variations in HBA/HBD molar ratios and the chemical nature of the starting components.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113948"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Promotion of Cd species on the electrocatalytic hydrogen evolution activity of two-dimensional molybdenite 镉对二维辉钼矿电催化析氢活性的促进作用

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-05 DOI: 10.1016/j.materresbull.2026.113992

Qinghong Han , Qingmiao Wang , Yue Wu , Si Wu , Yu Wang , Qing Ye , Shaoxian Song , Feifei Jia , Yanmei Li

{"title":"Promotion of Cd species on the electrocatalytic hydrogen evolution activity of two-dimensional molybdenite","authors":"Qinghong Han , Qingmiao Wang , Yue Wu , Si Wu , Yu Wang , Qing Ye , Shaoxian Song , Feifei Jia , Yanmei Li","doi":"10.1016/j.materresbull.2026.113992","DOIUrl":"10.1016/j.materresbull.2026.113992","url":null,"abstract":"<div><div>The inert MoS₂ basal plane severely restricts its hydrogen evolution reaction (HER) activity. This work systematically compares three Cd-based modification strategies (doping, Cd-MoS<sub>2</sub>; CdS heterojunction, CdS/MoS<sub>2</sub>; atomic clusters, Cd/MoS<sub>2</sub>) to activate the basal plane while retaining MoS<sub>2</sub>’s layered structure. <strong>Taking into account both catalytic activity and stability</strong>, Cd-MoS<sub>2</sub> stands out with a ultralow overpotential of 113 mV at 10 mA·cm⁻<sup>2</sup>, a Tafel slope of 62 mV·dec⁻<sup>1</sup>, and robust long-term stability in alkaline media. DFT calculations confirm Cd optimizes ΔG<sub>H*</sub> to near-zero, narrows the bandgap, and enhances Fermi-level electron density via Cd-MoS<sub>2</sub> orbital hybridization. This work uncovers Cd’s atomic-level modulation mechanism and provides a novel, comparative design blueprint for high-performance MoS<sub>2</sub>-based HER catalysts. These findings offer a strategic framework for the rational development of MoS<sub>2</sub>-based electrocatalysts for high-efficiency alkaline HER.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113992"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Chemical reengineering of waste polyester-cotton blends with comprehensive sustainability assessment 废涤棉混纺的化学再造及综合可持续性评价

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-26 DOI: 10.1016/j.materresbull.2025.113979

Tian Tian , Xinyu Wang , Xinglin Liu , Wang Liao , De-Yi Wang

引用次数: 0

Synthesis of 2D WO3 nanosheets by confined growth on GO to enhance the photodegradation of organic contaminants in wastewater 氧化石墨烯限生法制备二维氧化钨纳米片，增强废水中有机污染物的光降解能力

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-02 DOI: 10.1016/j.materresbull.2025.113936

Druval Santos de Sá , Kelly Leite dos Santos Castro Assis , Carolina Carvalho de Mello , Victor Magno Paiva , Maybi Fálker Sampaio , Odivaldo Cambraia Alves , Adriana Maria da Silva , Eliane D'Elia , Braulio Soares Archanjo , Carlos Alberto Achete

{"title":"Synthesis of 2D WO3 nanosheets by confined growth on GO to enhance the photodegradation of organic contaminants in wastewater","authors":"Druval Santos de Sá , Kelly Leite dos Santos Castro Assis , Carolina Carvalho de Mello , Victor Magno Paiva , Maybi Fálker Sampaio , Odivaldo Cambraia Alves , Adriana Maria da Silva , Eliane D'Elia , Braulio Soares Archanjo , Carlos Alberto Achete","doi":"10.1016/j.materresbull.2025.113936","DOIUrl":"10.1016/j.materresbull.2025.113936","url":null,"abstract":"<div><div><strong>The remarkable properties of t</strong>ungsten oxide nanosheets (WO<sub>3</sub>-NS), such as high specific surface area and preferentially exposed facets, renders them highly attractive photocatalytic nanomaterials for the degradation of organic contaminants. Nevertheless, conventional synthesis routes for the WO<sub>3</sub> nanosheets (WO<sub>3</sub>-NS), face challenges with the production often limited to WO<sub>3</sub> nanoplates that do not fully exploit its surface properties. In this work, we report the successful synthesis of WO<sub>3</sub>-NS using the confined growth approach on graphene oxide (GO) at temperatures ranging from 450 to 700 °C. WO<sub>3</sub>-NS with a porous surface were successfully synthetized and applied to the photodegradation of methylene blue (MB) under visible, UV-A, and solar light. Kinetics studies of MB photodegradation with WO<sub>3</sub>-NS/H<sub>2</sub>O<sub>2</sub> revealed a degradation Deg (%) of 97-99% with k =0.026-0.070 min<sup>−1</sup> and excellent photostability over five cycles without no significant loss of photocatalytic activity. In addition, WO₃-NS-600 demonstrated broad-spectrum activity against other organic contaminants, including Rhodamine B (94 % in 60 min) and Tetracycline (88 % in 120 min. This study also provides insights into the WO<sub>3</sub> formation mechanism GO surfaces and underscores the promising performance of WO<sub>3</sub>-NS for wastewater decontamination.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113936"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Tungsten carbide/carbon composite as novel functional filler in polypropylene enables highly efficient γ-ray shielding 碳化钨/碳复合材料作为一种新型的功能性填料在聚丙烯中实现了高效的γ射线屏蔽

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-07 DOI: 10.1016/j.materresbull.2025.113944

Shuaida Song , Jie Zhao , Xiangjie Duan , Na Zhou , Jizhuang Fan , Bo Tian , Yunchen Du

{"title":"Tungsten carbide/carbon composite as novel functional filler in polypropylene enables highly efficient γ-ray shielding","authors":"Shuaida Song , Jie Zhao , Xiangjie Duan , Na Zhou , Jizhuang Fan , Bo Tian , Yunchen Du","doi":"10.1016/j.materresbull.2025.113944","DOIUrl":"10.1016/j.materresbull.2025.113944","url":null,"abstract":"<div><div>Polymer-based composites attract increasing attention for γ-ray shielding because of their light weight, flexibility, and easy processing. In this study, tungsten carbide–carbon (WCC) with dual-scale characteristics, composed of ultrafine WC<sub>1-x</sub> nanoparticles (3–4 nm) anchored on micrometer-scale carbon scaffolds, is incorporated into a polypropylene (PP) matrix to develop high-performance shielding materials. WCC possessing combined micro– and nano-scale features effectively mitigates nanoparticle agglomeration and enhances radiation attenuation across a wide energy range. Among the prepared composites, WCC45PP (45 wt % WCC) exhibits a linear attenuation coefficient (<em>μ</em><sub>L</sub>) of 3.597 cm<sup>-1</sup> and a radiation protection efficiency (RPE) of 48.3 % at 59.6 keV, while also showing superior mechanical and thermal stability compared with the composite containing commercial WC. These results indicate that WCC with dual-scale characteristics provides an effective strategy for designing lightweight, flexible, and lead-free polymer composites for γ-ray shielding applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113944"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

NiCo bimetallic nanotrappers derived from recycled coffee grounds for capacitive energy storage 镍基双金属纳米捕集器来源于可回收的咖啡渣，用于电容储能

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-02 DOI: 10.1016/j.materresbull.2025.113932

Bairui Qi , Gang Chen , Yuntian Zhu , Zhu Xiao

{"title":"NiCo bimetallic nanotrappers derived from recycled coffee grounds for capacitive energy storage","authors":"Bairui Qi , Gang Chen , Yuntian Zhu , Zhu Xiao","doi":"10.1016/j.materresbull.2025.113932","DOIUrl":"10.1016/j.materresbull.2025.113932","url":null,"abstract":"<div><div>The growing global energy demand and environmental concerns necessitate efficient energy storage and sustainable waste management. Here, we introduce a NiCo Bimetallic Nanotrappers fabricated by the secondary recycling of coffee grounds through carbonization for capacitive energy storage. . By tuning Co and Ni salt ratios, ultrathin NiCo₂O₄ nanosheets form a unique trap-like polyhedral structure on carbon frameworks. The NiCo<sub>2</sub>O<sub>4</sub>/CFC electrode achieves a high specific capacitance of 1565 F/g at 5 A/g, maintains 767 F/g at 40 A/g, and exhibits good cyclic stability with 80.3% capacitance retention after 5000 cycles, while its charge-transfer resistance (<em>R<sub>ct</sub></em>) remains relatively stable at 0.62 Ω. Its performance stems from unique trap-like structure for enhanced electron ion transport, large specific surface area, and N-doping-induced increase in reactive sites, coupled with good intrinsic electrical conductivity for rapid electron transport. This sustainable strategy paves the way for high-performance green energy materials.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113932"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145705557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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