PHYSICA B-CONDENSED MATTER
·
2025
·
IF 2.8
Qinghua Peng,Yuexing Zhang,Wenlin Feng,Xiaozhan Yang,Jiahao Cheng
The concentration and type of surface-adsorbed oxygen are critical determinants of gas-sensing performance. Rhenium disulfide (ReS 2 ), a transition metal dichalcogenide (TMD) with a thickness-independent direct bandgap, has garnered considerable attention as a promising material for high-performance gas sensors due to its high carrier mobility and concentration. In this work, an improved rhenium-tellurium eutectic growth method for ReS 2 synthesis is proposed. Furthermore, the type and concentration of surface-adsorbed oxygen on the ReS 2 film were modulated through a combined approach of H 2 annealing and hydrogen peroxide (H 2 O 2 ) solution immersion. This surface modification strategy enabled the fabrication of an ReS 2 -based sensor exhibiting a low detection limit of 0.0219 ppm for hydrogen sulfide (H 2 S) and exceptional resistance to humidity interference, offering a novel route for the design of TMD-based gas sensors.
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高影响因子
Results in Surfaces and Interfaces
·
2025
·
IF 4.4
Jiaqi Li,Yuhan Zhang,Tongke Wang,Xintong Ta,Yachao Zhang,Fanlei Kong,Bo Hu,Lun Zhao,Guangbo Che
A core-shell structured mesoporous ion-imprinted ratiometric fluorescent sensor (CdTe@SiO 2 @CDs-MIIPs) was constructed for the visual and quantitative detection of Cu 2+ . The sensor integrates red-emitting CdTe quantum dots as an internal reference and blue-emitting carbon dots as a responsive signal within a mesoporous imprinted layer, enabling ratiometric fluorescence detection with enhanced sensitivity, selectivity, and visual distinguishability. Under optimized conditions, the system exhibited a linear response in the 200–1000 nM range, with a detection limit of 54.53 nM and a rapid response time of 4 min. To eliminate reliance on bulky analytical instruments, a smartphone-assisted RGB analysis method was introduced, enabling direct image-based quantification of fluorescence signals. The RGB-derived results were consistent with those obtained using a fluorescence spectrophotometer, demonstrating the potential of this sensor platform for on-site, instrument-free monitoring of Cu 2+ in complex environments.
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ANALYST
·
2025
·
IF 3.3
Jiahui Lai,Danni Wang,Xiuqin Sheng,Chuan-Fan Ding,Yinghua Yan
In large-scale glycoproteomics studies, reducing the experimental duration and enhancing digestion efficiency are crucial. In this work, a magnetic nanomaterial featuring a surface rich in hydrophilic groups and uniformly distributed trypsin (Fe3O4@DOPA/PEI@Au@DNA TET-trypsin) was developed for efficient digestion of proteins and specific enrichment of glycopeptides. The material surface exhibits a regular distribution of trypsin coupled with abundant hydrophilic groups. Thus, the material can demonstrate excellent performance in experimental studies related to glycoproteomics. Fe3O4@DOPA/PEI@Au@DNA TET-trypsin showed an excellent limit of detection (0.001 amol·μL−1) and high selectivity for glycopeptides (BSA : HRP = 5000 : 1) in a short reaction time, and it showed good performance in the processing of practical samples. Gene Ontology (GO) analysis suggests that complement activation, extracellular space, antioxidant activity and complement binding may be associated with tuberculosis. These analytical results provide new insights for determining and clarifying the pathogenesis and pathology related to tuberculosis.
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RARE METALS
·
2025
·Vol. 44
·期 5
·3339-3350
·
IF 11
Wang Wen-Ying,Zhu Jun-Liang,Bo Lin,Zhou Wen-Ying,Liu Xing-Shuo,Li Chang-Cun,Zhang Zheng,Zhao De-Gang
The rock-salt cubic SnSe compound with multiple valleys and inherent low thermal conductivity is considered to be a promising thermoelectric compound. In this study, heterogeneous Pb atoms were strategically introduced into the lattice of cubic SnSe matrix, synergistically adjusting the thermoelectric transport properties of samples by optimizing hole carrier concentration ( n ) and suppressing thermal conductivity ( κ tot ). When the doping content reached 0.08 mol, the peak power factor (PF) at 300 K increased to 20.00 μW·cm –1 ·K –2 . The growing internal microstrain induced by the differences in atomic size strengthened the phonon scattering and effectively reduced the lattice thermal conductivity ( κ L ). With further decoupling of the electrical and thermal transport properties, a peak thermoelectric figure of merit ( ZT ) of 0.82 and an average ZT of 0.42 (300–750 K) were achieved in the samples doped with 0.10 mol Pb. These findings highlight the effectiveness of the selected dopants and demonstrate their synergy in improving the performance of thermoelectric materials. Graphical
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yajun Zhao,Xiaotian Xu,Yu Ding,Wentao Ma,Zhoucheng Li,Baiyun Jin,Lingrui Chen,Yuanzhu Mi
In this study, polyethylene polyamine was used as the hydrophilic center, while alkyl glyceryl ethers served as hydrophobic tails, leading to the synthesis of various polyamine-based demulsifiers through a simple one-step method. The bottle test method was employed to assess their demulsification efficiency (DE) in the water-in-crude oil system, and their RSN values were measured through titration experiments. The results indicated that under conditions of 300 mg/L concentration and 40 °C, the DE of TE-8 and PE-8 reached 95.8 % and 98.63 %, respectively, without the need for additional additives. Furthermore, it was found that under general conditions, the DE increased continuously as the RSN value of the polyamine-based demulsifiers approached a certain value. Detailed demulsification experiments on TE-8 demonstrated that these types of demulsifiers exhibited excellent salt and acid-base tolerance. Additionally, the demulsification mechanism of TE-8 was inferred through its interfacial activity, competitive adsorption behaviour, and interfacial film strength. Evidence suggested that TE-8 effectively replaced the asphaltenes at the interface, thereby weakening the strength of the interfacial film and promoting the coalescence of water droplets.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zong Jingui,Liang Yazhan,Liu Fan,Zhang Mingzhe,Song Kepeng,Feng Jinkui,Xi Baojuan,Xiong Shenglin
Compared with lithium-ion batteries (LIBs), sodium-ion batteries (SIBs) are an alternative technology for future energy storage due to their abundant resources and economic benefits. Constructing various defects is considered to be a common viable means of improving the performance of sodium storage. However, it is of significance to thoroughly scrutinize the formation mechanism of defects and their effects and transition during the charge–discharge process. Here, twin structures are introduced into ZnSe 0.7 Te 0.3 nanocrystals by doping of Te heteroatoms. The Te dopants are visualized to locate in the lattices of ZnSe by spherical aberration electron microscopy. The formation of twin structures is thermodynamically promoted by Te heteroatoms partially replacing Se based on the theoretical calculation results. Moreover, calculation results show that with the increase of twin boundaries (TBs), the sodium diffusion energy barrier is greatly reduced, which helps the kinetics of sodium ion diffusion. In the connection, the composition and amount of TBs are optimized via tuning the doping level. The combined effect of point defects and twin structures greatly improves the sodium storage performance of ZnSe 0.7 Te 0.3 @C. Our work reveals the mechanism of the point defect on the twin plane defect and systematically investigates their effect on the electrochemical performance.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 11
·e70403
·
IF 3.4
Wenming Yang,Xiangpeng Shi,Xiaoqiang Chen,Yuanzheng Cai,Yi Ji,Yunfei Cao,Wanzhen Xu
The presence of sulfonamide antibiotic residues, such as sulfadiazine (SDZ), in aquatic ecosystems presents significant ecological risks, including the emergence of antibiotic resistance. Therefore, the development of precise and sensitive detection methods is of paramount importance. This study focuses on the design of a highly sensitive sensor for detecting SDZ by exploring the effects of quantum dot (QD) emission wavelength, particle size, and surface characteristics on sensor performance. Green, yellow, and red-emitting cadmium telluride (CdTe) QDs were synthesized through systematic adjustments in the molar ratio of Cd 2+ to Te, reflux time, and solution pH. These QDs were subsequently incorporated into silica nanoparticles (NH 2 -SiO 2 ) via molecular imprinting technology to fabricate a multicolor fluorescent imprinted sensor. The results indicated that the sensor incorporating green-emitting QDs (MIPs@g-QDs@SiO 2 ) exhibited the best performance, with a detection limit of 10.53 nM, a fluorescence quenching constant of K Sv , g = 4030 M − 1 $$ {K}_{Sv,g}=4030\ {\mathrm{M}}^{-1} $$ , and a linear detection range of 10–60 μmol·L −1 . In comparison, the yellow and red-emitting QD sensors displayed higher detection limits of 30.58 and 68.52 nM, with quenching constants of K Sv , y = 3700 M − 1 $$ {K}_{Sv,y}=3700\ {\mathrm{M}}^{-1} $$ and K Sv , r = 3360 M − 1 $$ {K}_{Sv,r}=3360\ {\mathrm{M}}^{-1} $$ , respectively. The sensitivity of the green-emitting QD sensor is attributed to its smaller particle size, which results in a larger specific surface area and enhanced surface effects, thereby increasing the fluorescence intensity range. Moreover, fluorescence quenching and selective adsorption experiments demonstrated that MIPs@g-QDs@SiO 2 exhibited excellent selective adsorption properties for SDZ, contributing to its enhanced fluorescent response.
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SENSORS
·
2025
·Vol. 25
·期 8
·2530
·
IF 3.5
Junting Zhang,Jiexin Chen,Shuojia Zheng,Da Zhang,Shaojuan Luo,Huixia Luo
HighlightsWhat are the main findings?A facile chemical strategy was developed for the synthesis of two-dimensional Te-doped GeH nanostructures with atomic-level precision and structural integrity.The Te-GeH-based photoelectrochemical (PEC) photodetectors exhibit high responsivity (708.5 µA/W) and ultrafast response speeds (92 ms rise/526 ms decay) under zero-bias conditions, demonstrating excellent broadband photoresponse.What is the implication of the main finding?The introduction of Te atoms enables effective modulation of the electronic structure in the GeH system. Owing to the comparable atomic radius between Te and Ge, efficient doping is achieved without disrupting the host lattice. In addition, the high electronegativity of Te induces electron redistribution and facilitates the formation of a built-in electric field, thereby optimizing charge separation and transport behavior. This approach provides a novel pathway for the functional design of Zintl-phase-derived two-dimensional materials, with broad implications for advanced optoelectronic applications.This doping strategy significantly enhances the photoelectrochemical performance of GeH-based photodetectors and enables the scalable fabrication of 2D nanomaterials with tunable optoelectronic properties. The resulting Te-GeH nanostructures offer improved carrier dynamics and reduced recombination, serving as a promising material platform for next-generation self-powered broadband photodetectors.Two-dimensional (2D) Xenes, including graphene where X represents C, Si, Ge, and Te, represent a groundbreaking class of materials renowned for their extraordinary electrical transport properties, robust photoresponse, and Quantum Spin Hall effects. With the growing interest in 2D materials, research on germanene-based systems remains relatively underexplored despite their potential for tailored optoelectronic functionalities. Herein, we demonstrate a facile and rapid chemical synthesis of tellurium-doped germanene hydride (Te-GeH) nanostructures (NSs), achieving precise atomic-scale control. The 2D Te-GeH NSs exhibit a broadband optical absorption spanning ultraviolet (UV) to visible light (VIS), which is a critical feature for multifunctional photodetection. Leveraging this property, we engineer photoelectrochemical (PEC) photodetectors via a simple drop-casting technique. The devices deliver excellent performance, including a high responsivity of 708.5 µA/W, ultrafast response speeds (92 ms rise, 526 ms decay), and a wide operational bandwidth. Remarkably, the detectors operate efficiently at zero-bias voltage, outperforming most existing 2D-material-based PEC systems, and function as self-powered broadband photodetectors. This work not only advances the understanding of germanene derivatives but also unlocks their potential for next-generation optoelectronics, such as energy-efficient sensors and adaptive optical networks.
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GREEN CHEMISTRY
·
2025
·Vol. 27
·期 17
·4540-4550
·
IF 9.2
Yang Zhao,Ruguang Wang,Jisi Li,Jiaxin Guo,Quanlu Wang,Zheng Lv,Pengfei Yin,Tao Ling
Single-atom catalysts towards the oxygen reduction reaction (ORR) often suffer from unsatisfactory activity and poor stability. Herein, for the first time, we successfully modulated the electronic structure of the Mn–N–C catalyst by introducing chalcogen oxygen groups (XO2, X = S, Se, Te), which induce changes in the Mn–N bond length in the MnN4 structure, thereby modulating the electronic structure of the metal center Mn. The experimental results demonstrate that the introduction of XO2 groups results in the rearrangement of Mn 3d electrons, which can be strongly correlated with the ORR activity of the Mn–N–C catalysts, among which the SeO2 modification increases the kinetic current density of the Mn–N–C catalyst achieving a half-wave potential (E1/2) of 0.79 V versus the reversible hydrogen electrode, approaching that of Fe–N–C catalysts along with significant stability in acidic media. The promising performance of the Mn–N–C catalyst as a PGM-free cathode was confirmed through fuel cell testing. First-principles calculations demonstrate that the introduced XO2 group downshifts the d-band center of the Mn center, thus successfully optimizing the adsorption of oxygen intermediates. This finding significantly facilitates the activity enhancement of Mn–N–C catalysts via the construction of a geometric structure–electronic structure–catalytic property relationship.
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Journal of the American Chemical Society
·
2025
·
IF 15.6
Yeqing Xu,Abuduheiremu Awati,Shan Zhou,Runhao Zhang,Xin Zhang,Hui Zeng,Yaxin Guo,Yuanbo Song,Chengmin Hu,Lei Xie,Qirui Liang,Kang Liang,Lei Jiang,Dongyuan Zhao,Biao Kong
Pesticides are vital for crop and seafood production but leave persistent residues that pose risks to ecosystems and human health through bioaccumulation. The detection of pesticide residues requires highly sensitive and selective technologies. Herein, a nanochannel sensor capable of dual recognition of ionic charge and molecular conformation based on molecular imprinting technology (MIT) is presented, offering a significant improvement in selectivity and sensitivity over traditional nanopore sensors. The MIT-based nanochannels with imprinting sites tailored to pesticide molecules go beyond recognizing the molecular size and surface functional groups, enabling the detection of molecular configurations. In this research, the approach enables the detection of 10 pesticide molecules with detection limits (LODs) ranging from 12.9 to 26.9 pM, achieving two orders of magnitude lower than fluorescence-based methods. Density functional theory (DFT) and molecular dynamics (MD) simulations revealed hydrogen bonding as the dominant interaction in the imprinting process. This versatile nanochannel construction method, proposed for the first time, provides dual recognition capabilities and is expected to advance nanochannel sensing while promoting sustainable environmental development.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ziheng Wei,Yongping Liu,Qi Ding,Yuena Zhang,Yu Ren,Jihu Chen,Mingming Si,Yuchi Fan,Wan Jiang
Conductive two-dimensional (2D) materials exhibit excellent electromagnetic wave (EMW) absorption properties at high frequencies due to their high conductivity loss. However, their unsatisfactory EMW absorption at low frequencies, attributed to impedance mismatch, remains a significant challenge. In this work, high-conductivity 1T′ WTe 2 nanosheets were incorporated into insulating mesoporous channels of Santa Barbara Amorphous-15 (SBA-15) via chemical vapor deposition (CVD), resulting in the formation of 1T′ WTe 2 /SBA-15 composites. These mesoporous channels restrict the growth of 1T′ WTe 2 and hinder carrier migration cross the channels, reducing their conductivity. Meanwhile, heterogeneous interfaces were formed between 1T′ WTe 2 nanosheets and mesoporous channels of SBA-15, accompanied by defects within the 1T′ WTe 2 nanosheets. This interaction promotes dipole polarization losses, significantly enhancing the attenuation of incident EMW, particularly at low frequencies. Consequently, the effective absorption bandwidth (EAB) of 1T’ WTe 2 /SBA-15 composites within the S band reached to 0.72 GHz, ranging from 3.28 GHz to 4.0 GHz, with a minimum reflection loss (RL min ) of −26.5 dB at 3.68 GHz. Furthermore, the EAB of the composites extended to 3.92 GHz at 1.5 mm in the high-frequency range. This work introduces a novel strategy for enhancing EMW absorption performance in the S band through heterogeneous interfaces and defect engineering, driven by the limiting effects of mesoporous channels.
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Advanced Science
·
2019
·Vol. 6
·期 19
·1900531
·
IF 15.804
Chenyang Xing,Dazhou Huang,Shiyou Chen,Qichen Huang,Chuanhong Zhou,Zhengchun Peng,Jiagen Li,Xi Zhu,Yizhen Liu,Zhipeng Liu,Houkai Chen,Jinlai Zhao,Jiangqing Li,Liping Liu,Faliang Cheng,Dianyuan Fan,Han Zhang
Herein, a core–shell tellurium–selenium (Te–Se) nanomaterial with polymer-tailed and lateral heterojunction structures is developed as a photothermal absorber in a bionic solar-evaporation system. It is further revealed that the amorphous Se shell surrounds the crystalline Te core, which not only protects the Te phase from oxidation but also serves as a natural barrier to life entities. The core (Te)–shell (Se) configuration thus exhibits robust stability enhanced by 0.05 eV per Se atom and excellent biocompatibility. Furthermore, high energy efficiencies of 90.71 ± 0.37% and 86.14 ± 1.02% and evaporation rates of 12.88 ± 0.052 and 1.323 ± 0.015 kg m −2 h −1 are obtained under 10 and 1 sun for simulated seawater, respectively. Importantly, no salting out is observed in salt solutions, and the collected water under natural light irradiation possesses extremely low ion concentrations of Na + , K + , Ca 2+ , and Mg 2+ relative to real seawater. Considering the tunable electronic structures, biocompatibilities, and modifiable broadband absorption of the solar spectrum of lateral heterojunction nanomaterials of Te–Se, the way is paved to engineering 2D semiconductor materials with supporting 3D porous hydrophilic materials for application in solar desalination, wastewater treatment, and biomedical ventures.
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