TALANTA
·
2017
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IF 4.162
Kangning Zhang,Xiaoling Chen,Zhuang Li,Yan Wang,Sen Sun,Li’na Wang,Tong Guo,Dongxia Zhang,Zhonghua Xue,Xibin Zhou,Xiaoquan Lu
In this work, a novel nanohybrid (AuPtNPs/S-NS-GR) of well-defined Au-Pt bimetallic nanoparticles (Au-PtNPs) decorated on sulfonated nitrogen sulfur co-doped graphene (S-NS-GR) was developed. Firstly, nitrogen sulfur co-doped graphene (NS-GR) was synthesized by one-step thermal annealing method. Secondly, phenyl SO 3 H- group was introduced onto the surface of NS-GR via diazotization reaction, which could provide more binding sites for the formation of metal nanoparticles . Finally, Au-Pt bimetallic nanoparticles were anchored on the surface of S-NS-GR by using electrochemical deposition . The prepared material was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDS), Raman spectroscopy and electrochemical impedance spectra (EIS). In addition, the electrocatalytic activity towards dopamine (DA) and uric acid (UA) was systematically studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Under optimum conditions, the linear ranges for the detection of DA and UA were 1.0 × 10 −8 – 4.0 × 10 −4 M and 1.0 × 10 −6 – 1.0 × 10 −3 M with the limits of detection (LOD, S/N = 3) of 0.006 μM and 0.038 μM, respectively. Furthermore, the modified electrode was applied to real sample analysis.
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高影响因子
FOOD RESEARCH INTERNATIONAL
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2026
·
IF 8.8
Mengqi Yu,Hong Chen,Yuyang Zhang,Shutong Zhang,Jiao Li,Jianan Sun,Sai Wang,Xiangzhao Mao
A Pt@Cu-HCF nanozyme with high oxidase-like activity was developed. • A paper-based sensor with the nanozyme was constructed for TAC detection. • Smartphone-based colorimetric analysis enabled rapid on-site TAC detection in marine oils. • The linear range of the sensor is 9.78–312.5 μM, with a LOD of 6.41 μM. • The sensor exhibits high sensitivity, selectivity, stability, and practical ability. Total antioxidant capacity (TAC) serves as a key indicator for evaluating the nutritional quality of foods. In this study, we designed a platinum-embedded copper hexacyanoferrate (denoted as Pt@Cu-HCF) nanozyme that exhibits high oxidase-like activity, efficiently catalyzing the oxidation of chromogenic substrates to generate robust colorimetric signals. Antioxidants quench hydroxyl radicals (∙OH) produced during the catalytic process, leading to a concentration-dependent suppression of the color signal. Leveraging this mechanism, a smartphone-integrated, colorimetric paper sensor for on-site TAC quantification was developed, using vitamin E as the calibration standard. The sensor was applied to determine TAC in fish oil, algal oil, and krill oil, demonstrating a linear response range of 9.78–312.5 μM and a limit of detection (LOD) of 6.41 μM. Validation using real-world marine oil samples showed excellent agreement with a commercial assay kit, confirming the reliability and practical applicability of this portable sensor for TAC measurement in complex biological matrices. Download: Download high-res image (189KB) Download: Download full-size image
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高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Chenkun Zheng,Jianan Li,Dong Zhang,Yi Liu,Yin Wang,Xiaodi Wang,Yun-Xiang Pan,Chong Peng
Coupling the hydrogen evolution reaction (HER) with PET-derived ethylene glycol oxidation reaction (EGOR) offers an energy-saving route for hydrogen production and plastic upcycling. However, Pt-based bifunctional catalysts are limited by inefficient Pt utilization, nonideal H* adsorption, and anodic oxidation-induced deactivation. Here, we report an oxygen-deficient D-Pt-Ni(OH)2/NF catalyst prepared by dielectric barrier discharge plasma treatment and integrated with an alternating-pulse electrolysis strategy. Plasma treatment introduces abundant oxygen vacancies and promotes electron transfer from Ni to Pt, downshifting the Pt d-band center and optimizing H* adsorption. The optimized catalyst requires only 12 mV to reach 10 mA cm–2 for HER and delivers a Pt mass activity of 3.23 A mg–1Pt at –0.1 V vs RHE, which is 64.6 and 1.68 times higher than those of Pt/C and untreated Pt-Ni(OH)2/NF, respectively. In an HER||EGOR electrolyzer, D-Pt-Ni(OH)2/NF achieves 100 mA cm–2 at 0.96 V using PET hydrolysate. Alternating-pulse electrolysis suppresses Pt oxidation and enables stable 100 h operation in a membrane-free flow electrolyzer, with >90% Faradaic efficiency for glycolic acid and nearly 100% Faradaic efficiency for H2. Techno-economic analysis indicates a net profit of $1080.1 per ton of PET processed. This work demonstrates a catalyst–electrolysis co-engineering strategy that links plasma-induced electronic modulation with durable plastic valorization-assisted hydrogen production.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yin Pang,Zhuolin Qi,Lei Cao,Wei Qi,Junfeng Mao,Yukun Huang,Haifeng Cong,Xingang Li,Jiawei Wen
Dual-site modulated P204-P507/XAD-4 resin separates Pt/Co efficiently. • Alkaline activation of P-OH groups significantly boosts Co(II) capture. • HFIP effectively shields P=O sites to suppress Pt(IV) co-adsorption. • The Co/Pt separation factor achieves a nearly ten-fold improvement. • DFT and XPS reveal decoupled pathways via synergy-through-inhibition. The efficient recovery of platinum (Pt) and cobalt (Co) from spent proton exchange membrane fuel cell (PEMFC) catalysts is vital for the sustainable hydrogen economy, yet their deep separation from acidic leachates is hindered by the inherent affinity property of organophosphorus extractants. In this study, a dual-site regulation strategy was developed using a synergistic P204-P507/XAD-4 solvent-impregnated resin (SIR). By combining alkaline activation to enhance P–OH cation-exchange capacity (boosting Co(II) uptake from 40.19 ± 0.31 to 47.26 ± 0.58 mg/g at pH 7.0) as well as the hexafluoroisopropanol (HFIP) masking to selectively shield P=O sites via competitive hydrogen bonding (suppressing Pt(IV) adsorption from 7.60 ± 0.66 to 3.78 ± 0.47 mg/g at pH 3.0), the competing adsorption pathways were effectively decoupled. Experimental results showed that the dual-modified resin achieved a Co(II) adsorption capacity of 47.26 ± 0.58 mg/g and an exceptional separation factor (SF Co/Pt ) of 248.85 ± 10.19 at pH 7.0, representing an approximately ten-fold improvement over the unmodified composite. Mechanistic investigations via XPS and DFT calculations indicated that Co(II) is predominantly captured through P–OH sites, while the binding energy shifts in P=O groups are primarily attributed to a secondary inductive effect rather than direct coordination. Furthermore, in continuous fixed-bed operation, the resin exhibited a wide separation window with Co(II) breakthrough delayed to 55 bed volumes, delivering a Pt-enriched effluent with 99.1% purity at 97.0% recovery, while the retained Co(II) was quantitatively eluted at 96.6% purity. The resin also retained over 90% of its initial Co(II) adsorption efficiency after three consecutive adsorption–desorption cycles. and offering a mechanism-driven approach for precision metal adsorbent design.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Dinh Chuong Nguyen,Thi Luu Luyen Doan,Trinh Ngoc Dat,Le Vu Truong-Son,Tien D. Tran,Ngo Thi My Binh,Van Din Nguyen,Soon-Gil Yoon,Lam Nguyen-Dinh
The synergy of appropriate geometrical structure design, the intrinsic properties of individual components, and multi-heteroatom doping engineering is greatly beneficial for improving the electrocatalytic activity of nanomaterials, thereby enhancing the performance of energy storage technologies. Herein, a highly efficient electrode material comprising KMnFe(CN) 6 Prussian blue analogue hollow spheres activated by Pt, Co, and S multi-dopants for boosting next-generation Zn-air batteries is reported. Benefiting from the promising intrinsic property, morphological features and multi-doping effect, the material exhibits exceptional electrochemical performance for the two half-reactions at the air cathode of Zn-air batteries, including the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). As expected, the assembled Zn-air batteries employing the proposed material as the cathode material demonstrate outstanding performance, achieving a high open-circuit potential of 1.40 V, a high power density of 188.7 mW cm −2 , and excellent rechargeability for 72 h of consecutive operation, comparable to state-of-the-art electrode materials containing Pt/C and RuO₂.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Jiaqi Cheng,Junting Yang,Ge Qi,Yuwei Ma,Jinxiao Bao,Qingchun Wang
This work presents a novel strategy for improving the anti-CO poisoning performance of Pt-based catalysts by coupling the electronic states of Mo 4d and Ce 4f to modulate the Pt electronic structure. The introduction of Mo into CeO2 creates a composite support (Mo-CeOx) that induces electron redistribution at the Pt/CeO2 interface, inducing the electronic structure modulation of Pt, thereby influencing the Pt–CO interaction. This electronic tuning not only enhances Pt’s CO tolerance but also promotes charge transfer and improves catalyst stability. Density functional theory calculations and experimental data reveal that Mo doping decreases the formation energy of oxygen vacancies, facilitating Pt stabilization and the generation of active sites. The resulting Pt/Mo-CeOx/rGO catalyst exhibits significantly enhanced methanol oxidation reaction activity, with a mass activity 4.67 times higher than that of the undoped counterpart, alongside excellent CO poisoning resistance and long-term stability. This work introduces a new paradigm for designing highly efficient and durable Pt-based catalysts by leveraging electronic state engineering, offering a powerful approach for tackling CO poisoning in electrocatalysis.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Ji Zhou,Xin Feng,Yisha Huang,Runmin Mao,Meitong Ye,Haohang Zou,Yigang Yan,Ding Zhu,Chaoling Wu,Lishan Peng,Yao Wang
Cerium(III) oxygenated domain has been successfully decorated on the surface of PtCo particles. • The control of *CHO adsorption at Pt–O–Ce(III) interface achieves a non-CO pathway for MOR. • The *HCOOH deprotonation kinetics governed by the coverage of cerium(III) oxidation domain affects the overpotential of MOR. • The Ce-PtCo/C catalyst achieves a mass activity that is 4.8 times as high as that of Pt/C. The poisoning of *CO remains a longstanding challenge for Pt-based catalysts in methanol oxidation reaction (MOR). This study demonstrates that the non-CO pathway is governed by the moderate adsorption of *CHO species and the ability to rapidly oxidize intermediate, both of which can be fulfilled by the Pt-O-Ce(III) interface rather than Pt-O-Ce(IV). In contrast to traditional CeO 2 -supported Pt-based catalyst, this surface-modified Pt-based catalyst has been constructed with abundant Pt-O-Ce(III) interface, providing stable and sufficient active sites to simultaneously optimize the above two factors to catalyze MOR with non-CO pathway. Furthermore, we first reveal that the coverage of this Pt-O-Ce(III) interface is crucial. By rationally regulating the coverage of cerium(III) oxygenated domains, we modulate the thermodynamic adsorption properties of key intermediate species without affecting the subsequent deprotonation kinetics of *HCOOH, thereby achieving the maximum leverage. This novel catalyst steering the non-CO pathway shows promising application potential in actual DMFCs. Download: Download high-res image (137KB) Download: Download full-size image
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高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Enhui Du,Mingxin Lv,Hongli He,Zhilin Chen,Jie Yang,Liyuan Huai,Yuxiang Chen,Jian Zhang
Exciting opportunities in biomass catalytic conversion have spurred extensive research and development into the chemical utilization of 5-hydroxymethylfurfural (HMF) and its derivatives. In this study, we achieved the efficient base-free aerobic oxidation of HMF-derived tetrahydrofuran-2,5-dimethanol (THFDM) to tetrahydrofuran-2,5-dicarboxylic acid (THFDCA) on Pt/OMS-2 catalyst, offering a potential alternative to petroleum-based 1,4-cyclohexanedicarboxylic acid (CHDA). Oxygen vacancies on the catalyst support played a crucial role in the oxidation process by enhancing surface lattice oxygen mobility and facilitating the oxidation of THFDM via the Mars-van Krevelen (MvK) mechanism. This in-depth exploration of bio-based products presents a promising avenue for the production of high-value building blocks.
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高影响因子
Small
·
2018
·Vol. 14
·期 14
·1703613
·
IF 9.598
Yanxia Ma,Lisi Yin,Guojian Cao,Qingli Huang,Maoshuai He,Wenxian Wei,Hong Zhao,Dongen Zhang,Mingyan Wang,Tao Yang
Exploration of highly efficient electrocatalysts is significantly urgent for the extensive adoption of the fuel cells. Because of their high activity and super stability, Pt-Pd bimetal nanocrystals have been widely recognized as one class of promising electrocatalysts for oxygen reduction. This article presents the synthesis of popcorn-shaped Pt-Pd bimetal nanoparticles with a wide composition range through a facile hydrothermal strategy. The hollow-centered nanoparticles are surrounded by several petals and concave surfaces. By exploring the oxygen reduction reaction on the carbon supported Pt-Pd popcorns in perchloric acid solution, it is found that compared with the commercial Pt/C catalyst the present catalysts display superior catalytic performances in aspects of catalytic activity and stability. More importantly, the Pt-Pd popcorns display minor performance degradations through prolonged potential cycling. The enhanced performances can be mainly attributed to the unique popcorn structure of the Pt-Pd components, which allows the appearance and long existence of the high active sites with more accessibility. The present work highlights the key roles of accessible high active sites in the oxygen reduction reaction, which will ultimately guide the design of highly durable Pt-Pd catalysts.
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高影响因子
Advanced Sustainable Systems
·
2019
·Vol. 3
·期 5
·1900026
·
IF 0
Yanyan Wang,Xue Yu,Gen Liu,Xiaodong Zhu,Rui Xu,Mei Ji,Yanqing Ma,Lei Ma
Proton exchange membrane water electrolysis (PEMWE) is known as an effective and environmental-friendly method for hydrogen production. However, the process is hindered by the necessity of large loading of high-priced noble metals in the conventional approaches. To resolve this problem, a highly efficient Nafion-based catalyst and proton exchange system are developed, which only need ultralow platinum loading by direct e-beam evaporation deposition. Scanning electron microscopy is performed before and after the deposition, which reveals a very smooth morphology. By assembling the PEMWE device with above-mentioned cathode and conventional iridium black anode, the current density reaches 500 mA cm −2 with a platinum loading of only 0.00379 mg cm −2 at 1.64 V under 80 °C. A mass activity of ≈132 A mg −1 is achieved, which is one order of magnitude higher than previously reported results. Moreover, powered by a commercial silicon solar cell, it realizes a solar-to-hydrogen conversion efficiency up to 8.26%. This work opens up an avenue of fabricating PEMWE with an ultralow catalyst loading, which may have enormous potential for future industrial scale applications.
研究领域:
能源材料
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电化学
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氢气生产
·
薄膜沉积
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 3.8
Yin Yanjun,Shen Hailin,Wang Mengyao,Suo Zhiguang,Liu Yong,Wei Min
A self-calibrated ratiometric electrochemical aptasensor was developed for the detection of ochratoxin A. This sensor is based on DNA-mediated gold/prussian blue nanoflowers (Au/PB NFs), methylene blue/platinum/zinc-cobalt metal-organic framework (MB/Pt/ZnCo MOF), and an exonuclease III (Exo III)–driven bipedal DNA walker cyclic amplification strategy. The self-calibration mechanism of this sensor relies on the ratio between the response signal of MB/Pt/ZnCo MOF (I MB ) and the internal reference signal of Au/PB NFs (I PB ). This ratio can effectively resist external interference factors. DNA-mediated Au/PB NFs with a flower-like structure provide stable internal reference signals and promote electron transfer. MB/Pt/ZnCo MOF, leveraging ZnCo MOF with a porous structure and bimetallic synergistic effects, and Pt with electrocatalytic activity, serve as response signals. An Exo III–driven biped DNA walker was used to realize the cyclic amplification strategy. The sensor showed a wide linear range of 0.001~500 ng/mL, with a low limit of detection of 0.17 pg/mL. The detection capability of spiked corn flour, wine, and coffee powder samples was satisfactory, and the detection results for the quality control samples of coarse rice flour and wheat flour were not significantly different from those of high-performance liquid chromatography (HPLC), showing the potential for practical application.
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PubMed
高影响因子
Processes
·
2026
·Vol. 14
·期 2
·223
·
IF 2.8
Tianran Kong,Annan Zhao,Yinghui Zhang,Zongxuan Bai,Hongying Lü,Kaixuan Yang
Efficient conversion of biomass-based platform molecules into high-value derivatives is recognized as one formidable challenge in biomass upgrading. In this work, a one-pot deep eutectic solvents-assisted solvothermal method was developed for the modification of the commercial Pt/C catalysts by introducing a secondary metal (M = Sn, Bi, Ge, Sb, Pb). The structural and electronic properties of the catalysts were precisely tuned. Among the screened metals, the addition of Sn yielded the most significant improvement in catalytic activity. The optimized PtSn0.5/C-140 catalyst achieved superior furfural (FAL) conversion and furfuryl alcohol (FOL) selectivity under mild conditions (20 °C, 2 MPa H2). Comprehensive characterizations, including XRD, HRTEM, XPS, and H2-TPD, confirmed the formation of Pt-Sn solid-solution phase. Furthermore, Characterization and reaction results revealed that the electronic and geometric effects induced by Sn modulated Pt active sites, significantly enhancing the adsorption of the active H species. Additionally, the SnOxspecies adjacent to the Pt-Sn sites served as hydrogen spillover acceptors, further accelerating the hydrogenation process. The synergy between the Pt-Sn solid-solution phase and SnOxspecies is identified as the origin of the superior performance at room temperature. These findings provide a new strategy for the design of high-performance biomass conversion catalysts by upgrading commercial noble metal catalysts.
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高影响因子
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