ACS Applied Energy Materials
·
2026
·
IF 5.5
Wu Pengxuan,Ding Yusong,Li Bingshuang,He Yunxia,Liu Qian,Huang Xiaoxi
This study reports a mesoporous carbon confinement strategy for enhancing the mass activity and structural durability of Au-based catalysts toward electrochemical CO 2 reduction reaction (CO 2 RR) to CO. Glutathione-protected Au clusters were introduced into polyaniline-derived mesoporous carbon (PDMC), followed by thermal ligand removal, producing ultrasmall Au nanoparticles uniformly embedded within a conductive N-doped carbon framework. The mesoporous carbon matrix effectively restricts Au growth and suppresses nanoparticle aggregation, thereby preserving abundant low-coordinated Au surface sites while maintaining accessible channels for charge and mass transport. The optimized Au@PDMC-30 catalyst delivers a CO Faradaic efficiency of 90.0 ± 1.3% at –0.9 V vs reversible hydrogen electrode in an H-type cell and maintains stable CO production for over 24 h without obvious Au aggregation. More importantly, under flow-cell conditions, Au@PDMC-30 achieves a high CO mass activity of 1192.4 mA mg –1 , approximately twice that of commercial Au/C, demonstrating greatly improved precious-metal utilization. In situ Fourier transform infrared spectroscopy and density functional theory calculations reveal that the confined low-coordinated Au sites possess an optimized electronic structure that facilitates *COOH formation, thereby accelerating the CO 2 to CO pathway. This work highlights confinement engineering of ultrasmall noble-metal nanoparticles as an effective route to improve catalytic selectivity, durability, and mass-normalized activity for CO 2 RR.
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2026
·
IF 1.3
Runcai Xu,Jiqing Dong,Xintao Gao,Xin Cheng,Xiangyan Chen,Yantao Li
Developing highly sensitive and stable nonenzymatic glucose sensors remains crucial for reliable glucose monitoring. Herein, we report an SMSI-driven Au/CeO 2 -BTC nanozyme derived from a Ce-BTC metal-organic frameworks (MOFs) for efficient electrochemical glucose detection. The Ce-trimesic acid (Ce-BTC) precursor was calcined to generate a porous CeO 2 -BTC framework with abundant oxygen vacancies, followed by the in situ deposition of Au nanoparticles. Structural analyses reveal the formation of Au-O-Ce interfacial sites, indicating pronounced trong metal-support interactions (SMSI) that induce electronic modulation, increase Ce 3+ concentration, and facilitate rapid charge transfer. Benefiting from these synergistic effects, the Au/CeO 2 -BTC-modified electrode exhibits excellent catalytic activity toward glucose oxidation, achieving a sensitivity of 41.3 µA cm -2 mM -1 and a detection limit of 4.75 µM, along with good reproducibility, stability, and selectivity. This work highlights the importance of SMSI engineering in MOF-derived nanozymes and provides an effective strategy for constructing high-performance electrochemical glucose sensors
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
·
2026
·
IF 3.1
Yanfeng Wang,Yuzhen Wang,Peng Fei,Duoliang Shan
A simple and sensitive method was developed for the electrochemiluminescence (ECL) determination of DNA. • Au-luminol NPs addressed the issues of weak solubility and ECL signals of luminol in neutral conditions. • The target DNA induced the formation of heme and G-quadruplexes as biomimetic enzymes, thereby enhancing the electrochemical luminescence intensity of luminol. A novel signal amplification approach was developed for DNA detection, leveraging the synergistic effect of G-quadruplex/hemin DNAzyme and gold nanoparticles (Au NPs) to enhance the electrochemiluminescence (ECL) of luminol. The optimized system exhibited excellent linear response toward target DNA with a linear detection range from 10 fM-50 pM and achieved fM-level DNA detection. The spiked recoveries of serum samples ranged from 95.1% to 107.6%, demonstrating its reliable performance for practical sample analysis. Compared with recently reported analogous ECL sensors for DNA detection, this system featured a wider linear range, lower limit of detection and stronger anti-matrix interference capability, offering a new strategy for rapid and ultrasensitive detection of target analytes in complex matrices. Download: Download high-res image (235KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2026
·Vol. 42
·期 29
·21058-21070
·
IF 4.4
Yu Hai,Liang Xiaoyan,Yu Xinchen,Guo Enhui,Wang Congrong,Lv Jianguo,Zhang Miao,Yang Lei,He Gang
Photoelectrocatalytic (PEC) technology integrates the
advantages
of both photocatalysis and electrocatalysis. It utilizes semiconductors
to absorb sunlight as an energy source and applies a potential to
facilitate the timely and directional transfer of photogenerated electrons,
effectively achieving the physical separation of the photoanode and
cathode. This is widely considered a primary factor in improving catalytic
efficiency. In this study, In 2 S 3 thin films
and Au particles were prepared by hydrothermal and electrochemical
deposition for robust attachment to TiO 2 nanorods based
on a fluorine-doped tin oxide (FTO) substrate, which greatly improves
carrier transfer during the PEC process. The results showed that the
cutoff wavelength of Au–In 2 S 3 /TiO 2 was red-shifted to 535.6 nm. Under illumination without bias,
the photoelectric current density of Au–In 2 S 3 /TiO 2 reached 2.582 mA/cm 2 , 18-fold
that of TiO 2 . Linear sweep voltammetry results indicated
that under illumination at 0.8 V, the photoelectric current density
of Au–In 2 S 3 /TiO 2 was 7.956
mA/cm 2 , 24.7-fold that of TiO 2 , and 3.1-fold
that of Au–In 2 S 3 /TiO 2 under
illumination without bias (0 V). The methanol-assisted test to amplify
the hydrogen production signal revealed that, under illumination at
0.8 V bias (vs Ag/AgCl), the methanol-assisted hydrogen production
rate of Au–In 2 S 3 /TiO 2 was
2.51 mL/cm 2 , 3-fold higher than that under illumination
alone (0.71 mL/cm 2 ). This study provides new insights for
methanol-assisted PEC hydrogen evolution reactions and serves as a
reference for the design of high-performance photocatalysts.
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Qian Wang,Rui Li,Siyao Yao,Qingde Chen,Qinghu Tang,Futing Xia,Qiu-E Cao,Wenhao Fang
● Au particles were in situ grown on spinel Co 3 O 4 needle-shaped arrays. ● Au induced Co–O lattice distortion, Co vacancies and Co 3 O 4 low-potential reconstruction. ● Au-driven charge redistribution shifted Co 3 d states toward E f and accelerated charge transfer. ● CoOOH active sites enhanced C O adsorption and facilitated HMFCA-to-FFCA oxidation. ● Au-Co 3 O 4 enabled 99.5% FDCA yield and 99.7% FE and rivalled the top Co-based catalysts. 5-Hydroxymethylfurfural electrooxidation (HMFOR) into 2,5-furandicarboxylic acid (FDCA) is a very promising route for biomass upgrading. Although Co 3 O 4 catalyst is favored due to superior redox ability and high activity, it still suffers from harsh reconstruction of Co–O units and sluggish cascade oxidation of intermediates. Here, low-loading Au was discovered to provoke Co 3 O 4 catalytic properties for efficient HMFOR in the alkaline media. The developed Au-Co 3 O 4 catalyst showed a low onset potential at 1.18 V ( vs. reversible hydrogen electrode, RHE) and delivered a current density of 100 mA cm –2 at only 1.34 V in 1 M KOH, outperforming the top Co-based catalysts reported to date in the literature. Au particles in strong interaction with Co 3 O 4 needle-like arrays induced the lattice expansion and anisotropic distortion of octahedral Co 3+ –O units, cobalt-vacancy defects, and surface electronic redistribution of Co 3 O 4 . As a result, these unique properties of Au-Co 3 O 4 enabled enhanced interfacial charge transfer, stronger adsorption of furanic reactants, and substantially accelerated HMFOR kinetics compared with Co 3 O 4 and Au electrodes. It was disclosed that Au-provoked structural and electronic perturbations of Co–O units allowed low-potential reconstruction to CoOOH active sites and promoted formation of OH-derived oxidizing agents under the mild operating potentials. These coupled effects can account for the improved intermediate selective oxidation into FDCA. 99.5% yield of FDCA with 99.7% Faradaic efficiency at 1.36 V was accordingly achieved. To the best of our knowledge, this work can be the first example of success in Au-regulated Co 3 O 4 electrocatalysis for steering selective oxidation of biomass derivatives. Download: Download high-res image (181KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Mingyue Yan,Bowen Li,Mengyuan Xu,Yuhua Shi,Jun Huang,Ke Kang,Kai chao Li,Xiaohu Mi,Zhenglong Zhang
An Au–AgCl Janus Nanoparticle (JNP) is an emerging plasmonic nanostructure that has attracted attention in the field of surface-enhanced Raman scattering (SERS). However, because of the large lattice mismatch between Au nanoparticles (NPs) and AgCl NPs, the instability of the AgCl NPs leads to very complex nucleation and growth kinetics, and the synthesis of Au–AgCl JNPs has challenges. In this work, we report a method for the synthesis of Au–AgCl JNPs by using Phenolic compounds and photochemical reduction. Phenolic compounds can reduce the adsorption energy between AgCl NPs and Au NPs during the growth process, resulting in the asymmetric deposition of Au atoms on the AgCl NPs surface. By utilizing blue-light irradiation to modulate the Ag atom sites on the AgCl NPs surface, the number of Au domains within the Au–AgCl JNPs can controllably change. The SERS detection limit for single Au–AgCl JNPs is determined to be as low as 10–10 M for Rhodamine 6G (R6G) molecules, outperforming pure Au NPs by 2–3 orders of magnitude. The enhancement is attributed to a synergistic mechanism involving interparticle gap effects that generate intense electromagnetic “hot spots” and efficient electron transfer between Au NPs and AgCl NPs. This work not only demonstrates a scalable strategy for fabricating lattice-mismatched Janus systems but also offers a framework for the rational design of heteronanostructures for SERS.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2026
·Vol. 16
·期 6
·385
·
IF 4.8
Weizhe Fu,Yinan Zhang,Jiapeng Zheng
The rapid fabrication of low-cost surface-enhanced Raman scattering (SERS) substrates is highly desirable for chemical and biological sensing. Existing customized SERS substrates, such as Au or Ag nanostructures produced by physical deposition, frequently involve complex fabrication routes, which limits the scalability of SERS devices. Here, we present the hexagonal close-packed plasmonic superlattices as an efficient, low-cost and applicable SERS platform, fabricated by scalable seed-mediated growth and interfacial self-assembly methods. We systematically compared Ag, Au, and Au@Ag nanospheres (NSs) of different sizes and demonstrated that the plasmonic superlattices made by 55 nm Au@Ag NSs exhibit the strongest Raman response, highest sensitivity, lowest detection limit, good spatial uniformity, and broad applicability. Simulations and Raman mapping experiments further confirm that Au@Ag NSs achieve an optimal balance between hotspot density and plasmonic field intensity, allowing for direct identification and quantification of diverse biochemical targets.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Yu Zhou,Fuchun Nan,Zhaolei Li,Tengyu Yin,Bin Cai,Dan Huang,Lingyun Wang,William W. Yu
Developing a convenient and high-performance blood glucose sensor is crucial for the effective diagnosis and management of diabetes. Sweat sensing offers a noninvasive method for detecting glucose levels; however, the complexities involved in enzyme immobilization and their sensitivity to environmental conditions during detection pose significant challenges in the development of enzyme-based sensors. Herein, this work proposes a graphdiyne oxide/gold nanoparticles (GDYO/AuNPs) composite electrode for nonenzyme glucose detection in sweat. The resulting sensor achieves a remarkable sensitivity (168 μA mM–1 cm–2), along with a low detection limit (4.11 μM). Such performance stems from the synergetic effect between AuNPs and the oxygen-rich functional groups of the GDYO substrate. This combination greatly enhances the dehydrogenation process during glucose oxidation. Moreover, the sensor exhibits superior selectivity with the coexistence of four other common substances in human sweat and maintains its glucose detection capabilities under neutral or slightly acidic conditions. Additionally, a GDYO/AuNPs-based wearable glucose sensor successfully monitors glucose fluctuations in human sweat both before and after meals, demonstrating a high correlation with blood glucose levels. Our findings provide a promising electrode for advancing nonenzymatic glucose sensors for in situ monitoring of sweat glucose.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2026
·
IF 3.3
Zhuoran Sun,Yali Ma,Haijun Hu,Xue Zhou,Peng Jiang,Xue Li,Jiyang Li,Yunling Liu,Xiaodong Sun
A tetrazine-functionalized zirconium MOF, UiO-68-TZDC (isostructural with UiO-68-TPDC), is constructed through a one-pot solvothermal synthesis for the selective recovery of Au(III) from acidic chloride media, using UiO-68-TPDC as a tetrazine-free, isostructural counterpart. The obtained crystalline materials possess good thermal stability. UiO-68-TZDC shows a saturated Au(III) uptake of 404.4 mg g−1, which is significantly higher than that of UiO-68-TPDC (114.5 mg g−1), and comparable or superior to many reported N- and S-functionalized Zr-MOFs. The adsorption kinetics follow the pseudo-second-order model with multi-stage intraparticle diffusion, indicating combined control by chemisorption and diffusion. UiO-68-TZDC displays pronounced selectivity for Au(III) over Fe(III) and Cu(II) and retains more than 70% of its initial capacity after several adsorption–desorption cycles. Structural and spectroscopic analyses reveal the formation of crystalline Au0 domains and surface Au(III) and Au(I) species, directly indicating a partial reduction process driven by the electron-rich tetrazine linker, as evidenced by significant shifts in the electronic states of the nitrogen sites. These results support a cooperative “preconcentration-coordination-reduction” mechanism and demonstrate that tetrazine linker engineering in robust UiO-68 frameworks is an effective strategy for developing high-performance adsorbents for Au(III) recovery from acidic gold-containing waste streams.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 18.1
Luan Xiaoxi,Wu Fengxia,Tian Yu,Li Fenghua,Gao Wenping,Xu Guobao,Zheng Guangchao,Wong Wing-Leung,Wong Kwok-Yin,Niu Wenxin
Hierarchical chirality, arising from the coupling of chiral surfaces, units, assemblies, and overall architectures, represents a structural paradigm with profound implications for enantioselective catalysis, molecular recognition, and chiral photonics. Unraveling and regulating its formation across multiple length scales is crucial for understanding structure–property relationships and guiding the design of chiral nanomaterials. Here, we present a strategy for constructing step-rich Pt@Au nanostructures with multilevel chirality. Using octahedral Pt nanoframes as templates and cysteine as a chiral inducer, rotated and oriented Au triangular pyramids with high-Miller-index chiral facets are generated, leading to the formation of fishbone-like, pinwheel-like, and tilted-step surface features that collectively constitute a hierarchical chiral nanostructure. Mechanistic studies identify cysteine and Pt nanoframes as indispensable for directing step formation and hierarchical growth, thereby defining the overall morphology and chiroplasmonic responses. Leveraging the abundant chiral surface area and the strong chiral electromagnetic nearfields generated under plasmonic excitation, we fabricate monolayer-modified electrodes based on the Pt@Au nanostructures that enabled plasmon-enhanced enantioselective electrochemical recognition of penicillamine enantiomers and determination of their enantiomeric purity. This strategy clarifies the origin of multilevel chirality in step-rich architectures and establishes a structural engineering approach for designing chiral nanomaterials with enhanced near-field properties for enantioselective recognition.
✓ 已验证
DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2026
·
IF 4.5
Jia-Qi Wang,Qi-Zhi Cai,Ben Li,Hua-Long Du,Na-Na Du,Yun-He Zhang,Jia-Jun Diao,Qi Wang
This work proposes a U-shaped fiber-optic sensor with a structure of an Au film / PbI2 & Au nanoparticles (AuNPs). This is an applicable example of using AuNPs-modified PbI2 in surface plasmon resonance (SPR) sensors, as studies have shown that this nanohybrid material has excellent optical properties. Finite element method (FEM) simulations verify that the presence of PbI2 could potentially enhance the evanescent wave electric field, leading to amplified resonance signals and improved sensitivity. Results show that Au/PbI2 structure brings about a sensitivity increase of 2.39 times compared to pure Au film structure. Subsequent experimental studies introduced AuNPs-modified PbI2 to induce SPR & local surface plasmon resonance (LSPR) coupling mechanisms. The sensor exhibits an exceptionally high sensitivity of 22666.39 nm/RIU within the narrow refractive index (RI) range of 1.36772–1.37673, while maintaining a sensitivity of 4835.61 nm/RIU in the wider range of 1.33139–1.35775. The sensor possesses good temperature stability. The relative standard deviation (RSD) of resonance wavelength under identical RI condition is 1.048% and the temperature response is about 0.661 nm/°C within 23-51°C. Repeatability test results indicate that the sensor exhibits good repeatability. RSDs of resonance wavelengths are 0.997%, 0.686%, 0.942%, 0.587%, 0.521%, and 0.949% within the RI range of 1.33139–1.37673. It is evident that the proposed sensor holds promise in the field of biomass measurement, thereby signifying that AuNPs-modified PbI2 possesses considerable application prospects in future optoelectronic devices.
✓ 已验证
DOI
高影响因子
Advanced Materials Technologies
·
2026
·
IF 6
Rui Dai,Jiapeng Zheng,Hui Yang,Xi Chen
Two-terminal optoelectronic synapses have garnered great attention in neuromorphic computing due to their advantages in structural simplicity and energy efficiency. However, the device's operational flexibility is fundamentally limited by its spectral and electrical characteristics, which fail to tune photoresponses with wavelength selectivity and voltage modulation. Here, a MoS 2 /Au nanoparticle two-terminal optoelectronic synapse is presented that simultaneously achieves wavelength selectivity and voltage-modulated memory control. Adjusting the morphology of Au nanoparticles enables selective maximum photoresponses across the green and red wavelength regions, and voltage modulation induces switching between short-term and long-term memory states, thereby enhancing functional versatility. Based on this tunable photoresponse of the synapse, wavelength-selective image denoising and recognition tasks are demonstrated, achieving a maximum classification accuracy of 98.03% at 520 nm across the visible wavelength range. A wavelength-selective and voltage-modulated task for road condition classification is also implemented, incorporating an artificial neural network to track color-coded vehicles and classify their movement trajectories with precise directional recognition (96.67% accuracy). This work demonstrates a highly tunable optoelectronic synapse that achieves concurrent wavelength selectivity and voltage modulation in a single device, enabling neuromorphic computing and providing a practical strategy for developing highly efficient, multifunctional neuromorphic architectures.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）