FUEL
·
2025
·
IF 7.5
Chen-Xu Chen,Jing-Pei Cao,Nai-Yu Yao,Wen Tang,Wei Jiang,Chuang Zhang,Xiao-Yan Zhao,Xiao-Yu Qiao,Tungalagtamir Bold
Improving the catalytic efficiency and catalyst life of Pt/Al 2 O 3 catalyst for methylcyclohexane dehydrogenation is of great significance for the study of organic liquid hydrogen storage. In this work, the promotion effects of Ga and Ce on the substantial improvement of catalytic stability and activity over the Pt / Al 2 O 3 during the methylcyclohexane dehydrogenation were investigated. The catalyst with optimizing Ga and Ce loading (1.5 wt%) exhibits ∼99.76 % selectivity and H 2 evolution rate of 2102 mol/g Pt /min at 300 °C. In 100 h long-time reaction, the conversion of methylcyclohexane remains around 75 % with no significant decrease. The characterization results show that introducing proper amount of Ga and Ce helps Ga 3+ cations incorporate into the lattice structure of CeO 2 that increase concentration of oxygen vacancies and CeO 2 reducibility in the catalyst, which boost the capability of methylcyclohexane dehydrogenation and tolerance for coke formation. Thus, the excellent stability and activity are achieved over the GaCe-modified catalyst. This study may share new light on the rational construction of highly efficient Pt-based catalysts for methylcyclohexane dehydrogenation.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Wei Bi,Yanjie Hu,Wenge Li,Hao Jiang,Chunzhong Li
In this work, a nanoreactor combining layers of facile traditional two-dimensional (2D) material, hexagonal boron nitride (h-BN, which often called the white graphene) with Pt/Al2O3 catalyst was designed to exhibit higher stability, activity, and selectivity in automobile exhaust treatment. Characterization revealed that h-BN does coat on the surface of platinum and forms a distinct Pt@h-BN/Al2O3 core–shell nanostructure. This as-prepared catalyst possesses good thermal stability and selectivity, because of the excellent high-temperature tolerance and the multidefected structure of the h-BN shell; that is, small molecules such as CO and O2 can easily intercalate into the nanoreactor, while large molecules such as propylene are blocked out. Meanwhile, the intercalated reactants can achieve the conversion of CO to CO2 faster (ΔT100 = 20 °C) with the confinement effect. The study indicates that constructing a nanoscale confined environment with two-dimensional (2D) coating can enhance the performance of the catalyst in multiple aspects and simultaneously provide a good example for designing nanostructured catalysts with multifaceted improvement.
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高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Jinlong Li,Weiqi Zhang,Qiang Ma,Qian Xu,Olivia Barron,Khadijeh Hooshyari,Huaneng Su
Catalyst layer (CL) is the key factor of affecting the performance of proton exchange membrane fuel cells (PEMFCs). Herein, a facile and universal strategy is proposed to in situ grow Pt nanowires (Pt-NWs) on a dual microporous layer (MPL) as a novel CL for PEMFCs application . The dual MPL is composed of hydrophobic layer and hydrophilic layer, where the former facilitates mass transport and the latter favors the in-situ growth of Pt-NWs. During the whole preparation, only formic acid is used as reducing agent, no surfactants or templates are involved. The as-prepared Pt-NWs are uniformly grown on the surface of carbon particles to form a unique CL. The effect of dual MPL structure on PEMFCs performance is investigated, by which an optimal carbon powder content ratio (4:1) between hydrophobic layer and hydrophilic layer is determined. The single cell tests reveal that the Pt-specific power of the resultant MEA with 0.108 mg cm −2 Pt-NWs is up to 7.23 W mg −1 , about twice higher than that for commercial Pt/C MEA with 0.2 mg cm −2 Pt loading. Furthermore, the resulted GDE shows enhanced durability compared to commercial one, indicating the good potential of in-situ prepared Pt-NWs electrode for practical PEMFC applications.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124731
·
IF 7.5
Nan Zhang,Menglin Gao,Wenru Cheng,Zhaocun Song,Xichen Yang
The development of efficient and cost-effective electrocatalysts for hydrogen production is crucial for advancing a carbon-neutral circular economy. The hydrogen evolution reaction (HER) performance of MoS 2 in alkaline media is hindered by its sluggish water-dissociation kinetics and inert basal planes. Herein, we report a novel ternary heterostructure, consisting of γ-FeOOH nanosheets and smaller Ni 3 S 2 nanosheets grown on vertical 1 T/2H MoS 2 nanosheets, that exhibits enhanced HER activity. Systematic investigations suggest that the enhanced HER performance is associated with the interfacial interactions among Ni 3 S 2 , γ-FeOOH, and MoS 2 , which involve strain coupling, electronic coupling, and functional synergy. Accordingly, the Ni 3 S 2 /γ-FeOOH/MoS 2 /CC electrode requires overpotentials of only 99.6 and 176.1 mV at 10 and 100 mAcm −2 , respectively. Remarkably, it outperforms commercial Pt/C at current densities exceeding 173.2mA cm −2 and requires an overpotential of only 213.9mV at 300 mA cm −2 , while also exhibiting robust operational stability at high current densities, highlighting its promise for further exploration toward practical alkaline water electrolysis systems. This work provides a promising strategy for designing high-performance, earth-abundant MoS 2 -based HER catalysts for alkaline water electrolysis.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Yukun Yang,Jian Liu,Rong Guo,Baoqing Bai,Tao Bo,Jinhua Zhang,Ligang Yu,Huilin Liu,Ying Zhang,Shuo Wang
A three-channel sensor array based on Au@Pt NPs was constructed. • Au@Pt NPs with dual-function characteristics was designed. • Discrimination of light aroma-type Baijiu (LAB) was achieved. • Different years, production processes, price gradients, and adulterated were analyzed. • This method highlighted simple to operate, rapid in detection. The development of light aroma-type Baijiu (LAB) industry proposes a growing need for developing rapid and accurate discrimination method for the quality control of LAB. This study innovatively constructed a dual-mode three-channel sensor array based on the gold/platinum nanoparticles (Au@Pt NPs) with surface engineering. In this case, two colorimetric sensor channels based on ascorbic acid/para-aminophenol-chloroauric acid-nanozyme (AA/ pAP-HAuCl₄-Au@Pt NPs) and one fluorescent sensor channel based on nanozyme‑hydrogen peroxide- o -phenylenediamine (Au@Pt NPs-H₂O₂-OPD) were established. Experimental results demonstrate the colorimetric and fluorescence mode can accurately quantify four organic acids and three aldehydes in Baijiu, respectively. Samples including 17 different years and 9 different production processes of basic liquors of LAB, 48 different price gradients of commercial LAB, and adulterated LAB were analyzed. Discrimination with an accuracy exceeding 96% by Linear Discriminant Analysis, Hierarchical Cluster Analysis, and leave-one-out cross-validation was achieved. The dual-mode three-channel sensor array is characterized by simplicity, rapidity and accuracy, providing a new idea for the quality discrimination and market regulation of Baijiu.
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高影响因子
Foods
·
2026
·Vol. 15
·期 15
·2598
·
IF 6
Qingqing Li,Xuecheng Zhang,Shurun Chen,Bowen Guo,Qingwen Cao,Xinyue Feng,Xiaoping Yu,Xiaoyu Jia,Biao Zhang,Hongqing Wang
Acetamiprid (ACE) is a widely used neonicotinoid insecticide with potential health risks due to its persistence in the environment and bioaccumulation in plant-based foods. In this study, an improved dual-mode lateral flow immunochromatography assay (DMLFIA) was established for the sensitive detection of ACE residues in plant-based foods using Au@Ag@Pt NPs as dual-function signal probes. In the colorimetric mode (Mode 1), with the inhibition rate as the vertical coordinate and the ACE concentrations as the horizontal coordinate, the linear detection range of the colorimetric mode was 0.1–3000 μg/L with the detection limit of 0.08 μg/L. In the photothermal mode (Mode 2), the temperature values obtained via smartphones integrated thermal imager showed a linear relationship with 0.1–3000 μg/L of ACE, and the detection limit is 0.1 μg/L. The cross-reactivity rate of the developed DMLFIA with other structural analogs and functional substances was less than 0.39%. The recovery rate of the developed DMLFIA used in spiked plant-based foods was 81.1–99.4%, with relative standard deviations (RSD) of 1.3–10.7%. The detection results of this constructed DMLFIA showed good consistency with those obtained by HPLC and ELISA. The constructed DMLFIA provides a selective, sensitive and rapid detection tool for ACE in different scenarios in plant-based foods.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Siyu Wu,Zining Qiu,Yuan Zhang,Xiaoya Zhao,Mingchen Zhou,Le Zhang,Cheng-Peng Li,Zhenhua Yan,Hongming Sun
Construct PtCu/CeO 2 heterojunction to resolve alkaline HER activity-stability trade-off dilemma. • Form strong Pt-O-Ce interfacial bonds to restrain Pt oxidation and metal leaching. • CeO 2 serves as efficient promoter to drastically accelerate water dissociation step of alkaline HER. • Assembled AEMWE cell delivers 2500 h ultra-long stability at industrial current density. The persistent activity-stability trade-off in electrocatalysts, driven by the dynamic evolution of active sites, severely limits the practical application of anion exchange membrane water electrolysis (AEMWE). Herein, we construct a robust PtCu/CeO 2 heterostructure that simultaneously achieves superior activity and long-term durability for alkaline hydrogen evolution reaction (HER). The catalyst exhibits an ultralow overpotential of 10 mV at 10 mA cm −2 and a small Tafel slope of 23.2 mV dec −1 , significantly outperforming conventional Pt/Ni(OH) 2 and Pt/C electrodes. In a full AEMWE cell, the PtCu/CeO 2 ||NiFe LDH system requires only 1.71 V to reach 1 A cm −2 and maintains stable operation for 2500 h with negligible decay, ranking it among the best-performing alkaline HER catalysts. Mechanistically, Cu alloying optimizes the hydrogen adsorption energy of Pt, while CeO 2 acts as an effective water dissociation promoter to accelerate the overall reaction kinetics. Moreover, strong Pt-O-Ce interfacial bonding between the thermodynamically stable CeO 2 and PtCu alloy, together with significant hybridization of Pt 5d/Cu 3d and Ce 4 f/O 2p orbitals, effectively suppresses the dissolution and oxidation of Pt sites. thereby enhancing the durability of the catalyst under high-current-density operation. This work offers a viable strategy to overcome the activity-stability dilemma in HER catalysts for industrial AEMWE. Download: Download high-res image (142KB) Download: Download full-size image This work presents a robust PtCu/CeO 2 heterostructure that breaks the activity-stability trade-off in alkaline HER for AEMWE. CeO 2 acts as an efficient water dissociation promoter, accelerating the Volmer step. It also serves as a thermodynamically stable scaffold. Strong Pt-O-Ce interfacial bonding optimizes the electronic structure and suppresses Pt dissolution and oxidation. This catalyst achieves superior activity with an overpotential of 10 mV at 10 mA cm −2 . In a full AEMWE cell, it demonstrates stable operation for 2500 h at 1 A cm −2 .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Junghoon Lee,Dongkyeong Ham,Hyeonho Song,Ben Ko,Putrakumar Balla,Daeseob Shin,Jiyun Lee,Jaeyong Park,Erdem Sasmaz,Deog-Keun Kim,Sungtak Kim
Gd regulates metal–zeolite interfaces in bifunctional Y zeolite catalysts. • Sequential Gd introduction improves Pt dispersion and suppresses over-cracking. • Gd co-impregnation stabilizes interfacial Ni 2+ species in Ni/Y catalysts. • Ni–Gd/Y lowers the jet-fuel productivity deactivation rate by 7.7-fold. • Optimal Gd loading widens the C 8 –C 15 operating window in Pt–Ni/Y catalysts. Selective hydroprocessing of long-chain paraffins to jet-fuel-range hydrocarbons (C 8 –C 15 ) requires bifunctional catalysts that combine high selectivity with long-term durability. Here, we show that gadolinium (Gd) acts as an interfacial regulator whose effects on zeolite Y-supported Pt and Ni catalysts are metal- and preparation-dependent. In the Pt/Y system, sequential Gd introduction improves Pt nanoparticle dispersion, increases the surface metallic fraction, and shifts the acid balance toward a more Brønsted-weighted environment, collectively widening the isomerization window and shifting the yield optimum to a lower extent of cracking, which raises the maximum C 8 –C 15 yield from 45.7 to 52.4 wt% in n-hexadecane hydroprocessing. In the Ni/Y system, Gd instead stabilizes interfacial oxidized Ni 2+ species and attenuates the accessible acid site population; although the conversion onset shifts to higher temperature, the jet-fuel productivity deactivation rate constant decreases by approximately 7.7-fold (1.10 × 10 −2 → 1.43 × 10 −3 h −1 ) over 100 h on stream, driven by suppressed Ni sintering and reduced carbonaceous deposition (16.3 → 9.6 wt%). These metal-dependent effects transfer to Pt Ni bimetallic catalysts, where Gd loading produces a volcano-type dependence of the jet-fuel operating window (ΔT 50 ), with 0.5Pt–(10Ni3Gd)/Y delivering the optimum balance between selectivity and high-temperature robustness. These results establish rare-earth-enabled interfacial engineering as a generalizable strategy for simultaneously tuning selectivity and durability in bifunctional zeolite catalysts for aviation fuel production. Download: Download high-res image (149KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Li Ming,Ning Li,Hongyan Zhang,Xiaobo Zou,Can Zhang
A “all-in-one” nanolabel APZ was constructed. • High Nbs coupling, dual spectral overlap, visible absorption, pH-triggered catalysis. • The three orthogonal signals enhance reliability and enable flexible applicability. • ZIF-8 “enrichment–confinement–pH-triggered collapse” synergy boosts catalysis. • Stabilize Au Pt heterostructure via ZIF-8–enabled physical isolation and protection. Conventional lateral flow immunoassay (LFIA) suffers from limited sensitivity due to single-signal readout, low antibody conjugation efficiency, and steric hindrance associated with bulky conventional antibodies. Herein, we developed a multimodal LFIA employing Au@Pt@ZIF-8 (APZ) as a multifunctional nanolabel, prepared by encapsulating flower-like Au@Pt nanoparticles (Au@Pt NPs) within a ZIF-8 framework. Benefiting from its high specific surface area and mesoporous structure, APZ significantly enhanced the coupling efficiency and stability of anti-3-phenoxybenzoic acid nanobodies (3-PBA Nbs), achieving a coupling efficiency of 94.75% under identical conditions, compared with 69.61% for Au@Pt NPs. APZ further exhibits a broad absorption spectrum, fluorescence quenching due to dual spectral overlap, and high catalytic activity arising from the intrinsic peroxidase-mimicking activity of Au@Pt, synergistically enhanced by ZIF-8 enrichment/confinement and pH-triggered framework collapse. These features enabled the integration of three orthogonal readout modes, namely aggregation-induced coloration, catalysis-induced chromogenesis, and fluorescence quenching, into a single test strip. The resulting multimodal APZ-LFIA attains limits of detection (LOD) for 3-PBA of 0.004 ng/mL, 0.001 ng/mL, and 0.0003 ng/mL, respectively. By integrating multiple complementary signals, this strategy offers a flexible and reliable platform for trace 3-PBA analysis and shows great promise for on-site food safety monitoring. Download: Download high-res image (87KB) Download: Download full-size image
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高影响因子
Solar RRL
·
2026
·Vol. 10
·期 1
·e202500878
·
IF 4.8
Tianci Chen,Jie Yu,Neng Hu,Weijia Wang,Lin Lei,Huiqing Fan,Peter Müller-Buschbaum,Qi Zhong
Enhanced photocatalytic hydrogen (H 2 ) evolution is realized by improving light harvesting via the multiscattering of incident light from embedded cellulose nanocrystal (CNC) nanoparticles in hybrid hydrogels. Due to the different refractive indices of CNC nanoparticles and hybrid acrylate-based hydrogels, instead of direct penetration through the hybrid hydrogels, the incident light can be multiscattered by the CNC nanoparticles in the hybrid hydrogels. It significantly improves the light harvesting capability and favors the photocatalytic H 2 evolution. In addition, the CNC nanoparticles possess a certain number of negative charges, which is beneficial for the efficient separation of photogenerated charge carriers and enhancement of H 2 evolution performance. Hence, the averaged H 2 evolution rate of hybrid hydrogels embedded with 0.5 wt% of CNC (CNC 0.5 ) can reach 2266 μmol g −1 h −1 , which is 154% of that of the hybrid hydrogels without CNC nanoparticles. Further increasing the amount of embedded CNC nanoparticles, the photocatalytic H 2 evolution is reduced. It can be attributed to the aggregation of nanoparticles, which reduces the specific surface area and lowers the light harvesting. Based on the improved H 2 evolution performance, the g-C 3 N 4 /Pt hydrogels embedded with CNC nanoparticles can be used for H 2 production in areas rich in solar energy but lack of water.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 29
·15459-15472
·
IF 3.9
Li Xiaolong,Zhang Yahui,Sun Gangqun,Sun Manni,Wang Xiru,Yang Zhiyan,Zhao Zhuoya,Li Mengjie,Ma Yongning,Huang Wei,Zhu Junli,Yang Yuhao
The
development of high-performance catalysts enabling CO-free
hydrogen production via aqueous-phase reforming of methanol (APRM)
is crucial for integrated methanol-to-hydrogen and hydrogen fuel cell
systems. Herein, a tandem Pt/Fe 5 C 2 :Fe 3 N@C catalyst was prepared via a temperature-programmed carbonization-nitridation
method followed by photoreduction deposition. Remarkably, the catalyst
delivers efficient CO-free H 2 production even at temperatures
as high as 210 ° C. The catalyst features a strong metal–support
interaction between Pt and Fe 5 C 2 , and a weaker
interaction between Pt and Fe 3 N. Mechanistic investigations
decouple the functions of the individual components. The carbon support
primarily serves to disperse the active components. The Pt–Fe
interface provides the active sites for methanol decomposition (CH 3 OH → CO + 2H 2 ). The resulting CO is completely
consumed through two subsequent reactions: most undergoes the water–gas
shift reaction (CO + H 2 O → CO 2 + H 2 ) on the surfaces of Fe 3 N and Fe 5 C 2 , with Fe 3 N being the dominant active phase, while
the remaining trace CO undergoes methanation (CO + 3H 2 →
CH 4 + H 2 O), for which Fe 5 C 2 is the principal active site. This synergistic cascade of reactions
enables the Pt/Fe 5 C 2 :Fe 3 N@C catalyst
to achieve highly efficient CO-free hydrogen production from APRM.
This work offers insights into designing catalysts for CO-free hydrogen
generation from alcohol-based liquid organic hydrogen carriers and
may accelerate the integrated industrialization of the methanol-to-hydrogen
and hydrogen fuel cell technology.
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高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2026
·
IF 5.9
Yanhong Zhang,Liulu Liu,Nanke Ma,Lixia Xie,Yuan Jin,Guangli Li
PNHC@Pt/TiO₂ core–shell heterojunction for trace Cu²⁺ monitoring. • N/P doping & O defects boost Cu²⁺ coordination and enrichment. • Low LOD 0.006 µM, wide linear range 0.001–20 µM. • Excellent selectivity against multiple coexisting heavy metal ions. • Reliable recoveries (87.1–103.3%) in tap water, soil, serum. Copper ion (Cu 2+ ) is a prevalent heavy metal contaminant in industrial wastewater and natural water bodies. Although it plays a vital role as a trace element in human physiology, overconsumption can result in severe systemic disorders. In this work, a novel electrochemical sensing platform based on P, N co-doped hollow carbon (PNHC) decorated with Pt/TiO 2 nanoparticles (PNHC@Pt/TiO 2 ) was developed for the ultrasensitive detection of Cu 2+ . The composite was systematically characterized by SEM, TEM, XRD, FTIR, Raman spectroscopy, and XPS, confirming the formation of a core-shell structure with a uniform spherical morphology (104.20 ± 0.21 nm), along with N/P heteroatoms that provide specific coordination affinity toward Cu 2+ . Compared to bare and single-component electrodes, the PNHC@Pt/TiO 2 -modified GCE delivered an enlarged electroactive surface area (0.1289 cm 2 ) and lower charge-transfer resistance; under the optimized parameters (pH 5.0, accumulation potential −0.8 V, accumulation time 180 s, and modifier volume 5 µL), this sensor presented a Cu 2+ linear detection range of 0.001–20 µM, a low limit of detection (LOD) of 0.006 µM (S/N = 3), and a high sensitivity of 6.102 µA µM −1 . The sensor also exhibited excellent selectivity against common interfering ions (K + , Na⁺, Ni 2+ , Co 2+ , Zn 2+ , Cd 2+ ), good reproducibility, and long-term stability (83.7% current retention after 8 days). Practical applicability was validated by successful determination of Cu 2+ in tap water, soil, and serum samples with recoveries ranging from 87.1% to 103.3%, demonstrating the reliable performance of the proposed sensor for environmental and biological monitoring.
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高影响因子
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