CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Jinwei Wu,Junfei Chen,Mingkang Zhang,Zebao Rui
Sulfur-induced catalyst deactivation has been a challenge in the design of gaseous pollutants purified catalyst. As the mainstream strategy for anti-sulfur catalyst design, the incorporation of sacrificial components into the catalyst bulk still faces issues such as increased cost and rapid activity decline. Herein, the physical isolated island strategy is proposed to improve the sulfur resistance and cost-effectiveness of a lean methane oxidation catalyst at no cost of its high activity. The isolated Al 2 O 3 island suppresses the formation of sulfates on adjacent Ir@Pt nanoparticles and avoids the sulfation of Ir@Pt/TiO 2 . Meanwhile, the isolated Al 2 O 3 island draws little effect on the chemical states of active sites. The sulfur adsorption function of isolated Al 2 O 3 island and high activity of Ir@Pt/TiO 2 are synergistically combined, leading to both remarkably high CH 4 oxidation activity (TOF = 1.2 s ‒1 at 350 °C) and high sulfur resistance without observable activity loss during 50 h on-stream test under 50 ppm SO 2 and a space velocity of 30000 mL g ‒1 h ‒1 . Such isolated-island strategy provides a meaningful reference for the efficient sulfur resistance catalyst design.
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CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.2
Junbo Tian,Peng Zheng,Shuang Deng,Yongjun Ji,Tengfei Zhang,Zhiyi Sun,Wenxing Chen,Yi-Chi Wang,Lin Gu,Dong Su,Guangwen Xu,Ziyi Zhong,Fabing Su
Understanding reconstructed interfacial sites is crucial for enhancing the catalytic conversion efficiency, as these sites can facilitate reactant adsorption, transformation, and desorption. Herein, we report an unconventional interfacial structure of Pt σ + –O–Ti 4+ –H δ + –oxygen vacancy (OV), in which atomic hydrogen binds to Ti 4+ sites via a charge-compensation mechanism involving subsurface OVs. This restructuring induced by hydrogen creates electron-rich Pt centers and interfacial oxygen, resulting in spatial elongation of the Pt–O and O–Ti bonds. This Pt σ + –O site, stabilized by –Ti 4+ –(H–OV), promotes the activation of CO adsorption/interfacially absorbed oxygen and interfacial lattice oxygen, effectively coupling the Langmuir-Hinshelwood and Mars-van Krevelen pathways. These sites facilitate the rapid CO 2 formation and desorption. Consequently, this system achieves complete CO conversion at 120 °C with an ultralow Pt loading of 0.17 wt% (even in the presence of 0.005% SO 2 and 10% vol H 2 O) and a 59-fold increase in turnover frequency compared to the control sample lacking this interfacial structure.
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TALANTA
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2026
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IF 6.7
Yu Pan,Amin Zhang,Chengliang Qi,Yueming Wang,Xin Chen,Wenli Wang,Xichang Wang,Yuan Liu
In-situ pore-confined growth of ultra-small Pt nanoclusters within mesoporous SiO 2 . • Au-Pt@SiO 2 nanozyme exhibits superior peroxidase-like activity with K m of 6.077 mM. • Enzyme-free electrochemical biosensor achieves 0.3 μM LOD. • Exceptional long-term stability retaining >85% activity after 30 days of storage. • Real-time quantitative profiling of single cancer cell H 2 O 2 efflux upon PMA trigger. Accurate quantification of H 2 O 2 released by tumor cells is important for characterizing cancer-associated oxidative stress, yet conventional biosensors often face an intrinsic trade-off between catalytic activity and structural stability. Herein, we present a rational strategy for real-time electrochemical monitoring of cancer-associated oxidative stress species through the in-situ fabrication of ultrasmall Pt nanozymes confined within the mesoporous silica shell of gold bipyramids (AuPt@SiO 2 ). In this architecture, the Au core provides conductive nucleation and anchoring sites, the mesoporous SiO 2 shell regulates Pt growth and affords structural stabilization and molecular-sieving protection, and Pt serves as the catalytic center for H 2 O 2 reduction. The resulting AuPt@SiO 2 nanozyme exhibited pronounced peroxidase-like activity with a favorable Michaelis-Menten constant (K m ) of 6.08 mM toward H 2 O 2 . After integration into a Nafion-based sensing interface, the enzyme-free sensor provided complementary linear ranges of 0.25-60 mM by cyclic voltammetry and 1-2100 μM by amperometry with a detection limit at 0.3 μM of H 2 O 2 . The electrochemical sensor based on AuPt@SiO 2 also demonstrated excellent repeatability and exceptional stability, retaining over 85% of its initial response after 30 days. Importantly, this platform enabled label-free monitoring of phorbol 12-myristate 13-acetate (PMA)-triggered H 2 O 2 efflux from MGC-803 gastric cancer cells and differentiated their oxidative-stress phenotype from that of normal gastric epithelial cells. The apparent H 2 O 2 -equivalent response normalized to cell number was approximately 1.72 × 10 −13 M per cell. This work highlights the potential of confined nanozymes for high-performance H 2 O 2 sensing and precise pathological profiling at the single-cell level. Download: Download high-res image (405KB) Download: Download full-size image
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2026
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IF 6.7
Longzhi Li,Tianyun Zhang,Yongqi Ren,Xin Qian,Xunchen Liu,Chunjian Su,Leyan Chu
A relay catalysis strategy driven by ultrasound-microwave excitation was proposed. • Pt/BT/ZnO ferroelectric heterojunction is applied to lignin depolymerization. • Hydrocarbon selectivity of 57.62% achieved via combined ultrasound-microwave excitation. • Cβ–O bond cleavage and deep hydrodeoxygenation pathway were elucidated. • Catalyst retained >50% hydrocarbon selectivity after five cycles. Lignin, as an abundant aromatic polymer, represents a promising renewable feedstock for producing high-quality liquid fuels. However, efficient cleavage of C–O bonds and subsequent hydrodeoxygenation (HDO) of phenolic intermediates into hydrocarbons remain significant challenges. Herein, a Pt-loaded ferroelectric heterojunction catalyst, Pt/BT/ZnO, was constructed and applied to lignin depolymerization. For the first time, a relay catalysis pathway driven by combined ultrasound-microwave excitation was developed. It was found that microwave-driven depolymerization alone suffered from insufficient exposure of active sites, resulting in inefficient conversion of phenolic intermediates. In contrast, the relay catalysis driven by ultrasound-microwave excitation promoted the deep HDO of phenols to hydrocarbons, with the hydrocarbon selectivity reaching 57.62%. Using 2-phenoxy-1-phenylethanol as a model compound, the selectivities of methylcyclohexane and cyclohexane after relay catalysis were enhanced to 36.48% and 18.45%, respectively. Combined with product analysis and DFT calculations, the mechanistic pathway was elucidated, revealing that the major route involves cleavage of the C β –O bond to form phenoxy radicals, followed by deep HDO to produce cycloalkanes. The synergistic effect of spontaneous polarization in Pt/BT/ZnO, ultrasonic cavitation, and microwave dielectric heating endowed the catalyst with excellent cycling stability, with hydrocarbon selectivity remaining above 50% after five runs. This work provides new insights into the application of ferroelectric heterojunction catalysts for lignin valorization and offers a novel route for producing aviation fuel components from renewable biomass. Download: Download high-res image (237KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiaojing Chen,Yuxi Luo,Hongyu Li,Qinxun Xu,Xinping Wang,Zhizhou Chen,Wen Shi,Yanbo Wang,Bingbing Chen,Long Li
Gas insulated switchgear (GIS) optimizes the integration of all primary equipment in a substation, except for the transformer, and is widely used in power systems due to its strong insulation and high reliability. Once a fault occurs in GIS, it poses a significant threat to grid safety, necessitating the establishment of an effective early insulation condition assessment mechanism to prevent further deterioration of the fault. CO, HF, and SO 2 are key characteristic gases reflecting GIS faults, and there is an urgent need for detection technologies that can monitor equipment status in real-time, accurately, and provide timely warnings. This study proposes the use of a differentiated sensor array combined with recognition algorithms to achieve precise detection of GIS fault gases. The WO 3 modified with different amounts of Pt shows good gas-sensing performance for CO, HF, and SO 2 , with distinct responses. Based on an optimized four-sensor array and feature extraction algorithms, high-precision qualitative classification (98.04%) of CO, HF, SO 2 , and their mixed gases was achieved, with high R 2 values in concentration prediction (0.9213 for CO, 0.9082 for HF, and 0.8947 for SO 2 ). Furthermore, an in-depth study of the differentiation mechanism of the sensor array was conducted. Finally, the developed IoT electronic nose system successfully demonstrated the precise detection of GIS fault gases. This research not only proposes a new solution for GIS fault detection but also provides a “boost” for the development of electronic noses.
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ChemNanoMat
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2026
·Vol. 12
·期 2
·e202500486
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IF 2.6
Jing Li,Siyuan Li,Xu Liu,Ligang Wang
This study presents the development of nitrogen-doped carbon sphere/SnS 2 nanocomposites (SnS 2 @NCS) as efficient platinum-free counter electrodes for dye-sensitized solar cells (DSSCs). Nitrogen doping introduces topological defects into the carbon matrix, facilitating the epitaxial growth of ultrathin SnS 2 nanosheets into hierarchical architectures. The optimized SnS 2 @NCS electrode exhibits significantly enhanced catalytic activity, demonstrated by a low charge–transfer resistance of 1.070 Ω cm −2 (representing a 74.6% reduction compared to the undoped SnS 2 @CS) and achieves a power conversion efficiency of 8.18%, rivaling that of platinum-based counterparts. The improved performance is attributed to synergistic effects arising from C N bonds and SnS 2 nanosheets, which collectively enhance interfacial charge transport and electrolyte infiltration. This work demonstrates a cost-effective strategy for fabricating high-performance DSSCs.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Lijun Wang,Yujia Wang,Tianyu Hui,Shun Wang,Na Sun,Ying Zhi Bai,Wei Wei Tai,Qiao Han
The catalytic conversion of biomass-derived furfural (FAL) to cyclopentanone (CPO) via hydrogenation-rearrangement is a promising route for sustainable fine chemicals. Pt-based catalysts exhibit superior performance but suffer from limited control over hydrogenation behavior and reaction selectivity. To overcome these challenges, we designed a synergistic metal and metal oxide catalyst (1Pt3Ni/MCM-41). Introduction of NiO triggers strong electronic interaction with Pt, tuning both metal active sites and acidic centers. This interfacial electron transfer improves Pt dispersion on the mesoporous MCM-41 support, inhibits aggregation, and stabilizes the catalyst against sintering and leaching. Meanwhile, electron transfer from NiO modulates the electronic structure of Pt, promoting hydrogen dissociation and the formation of active hydrogen species. The charge redistribution also optimizes surface acidity, enhancing selective adsorption and activation of the C=O bond in FAL. Under mild conditions, the catalyst achieves 97.5% FAL conversion, 90.6% CPO selectivity, and a high activity of 883•h -1 . This work provides a rational strategy for designing high-performance bifunctional catalysts for efficient, selective upgrading of FAL to CPO.
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Molecular Catalysis
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2026
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IF 4.3
Yanping Dong,Xiqiang Tian,Muhammad Zahid
Amine-functionalized dendritic mesoporous silica nanospheres (DMSN‑NH 2 ) was developed to confine and stabilize Pt nanoparticles. • Pt@DMSN-NH 2 showed higher TOF (968 h −1 ) than Pt@DMSN (312 h −1 ). • Pt@DMSN-NH 2 exhibits higher k value (1.23 min −1 ) and lower Ea value (36.9 kJ·mol −1 ) than Pt@DMSN (0.298 min −1 , 46.5 kJ·mol −1 ). • The excellent performance of Pt@DMSN‑NH 2 is attributed to its dendritic architecture and amine-functionalities. • Pt@DMSN-NH 2 catalyst exhibited excellent stability for up to five consecutive cycles. Stabilizing precious Pt nanoparticles on conventional supports remains challenging, as their high surface energy makes them prone to early destabilization. In this work, Pt nanoparticles synthesized via a polyol method were uniformly dispersed and firmly anchored on dendritic mesoporous silica nanospheres (DMSN), which were fabricated through a simple hydrothermal route and later functionalized with amine groups (DMSN‑NH 2 ). Remarkably, the as-synthesized Pt@DMSN-NH 2 catalyst exhibited 4.12 times enhancement in the catalytic hydrogenation of 4-nitrophenol (4-NP), achieving significantly excellent rate constant and turnover frequency values ( k = 1.23 min −1 , TOF = 968 h −1 ), compared with those of the Pt@DMSN catalyst ( k = 0.298 min −1 , TOF = 312 h −1 ). A comprehensive investigation of the structure-activity relationship, supported by a suite of bulk and surface characterization analysis, obviously attributes the highly efficient catalytic hydrogenation behavior of Pt@DMSN-NH 2 to the dendritic mesoporous architecture and the amine functionalities lining the pore walls. These two features jointly regulate the size of Pt nanoparticles (3.2 nm) and facilitate their uniform distribution (36.2% dispersion), thereby generating a higher number of key active Pt 0 species on the surface of Pt@DMSN-NH 2 , which enhances the hydrogenation of 4‑NP. The fabricated Pt@DMSN-NH 2 showed remarkable activity in the hydrogenation of 4-Nitrophenol. Download: Download high-res image (160KB) Download: Download full-size image
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Catalysts
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2026
·Vol. 16
·期 6
·503
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IF 4.5
Yudong Meng,Xing Fan,Zehui Yu,Jianyu Cai
In this study, Pt/N-Mo/TiO2and Pt/Mo/TiO2catalysts were prepared by the two-step impregnation method for catalytic CO oxidation, with the obtained Mo/TiO2pretreated or not with NH3before Pt loading. The Pt/N-1Mo/TiO2catalyst exhibited superior catalytic activity compared to Pt/1Mo/TiO2and Pt/N-xMo/TiO2(x= 0, 0.5, 2, 3, 5), indicating the essential role of N-modification of Mo/TiO2with an optimal MoO3loading. TheT90decreased from 133 °C for Pt/1Mo/TiO2to 105 °C for Pt/N-1Mo/TiO2under a feed gas consisting of 8000 ppm CO, 16% O2, 3% H2O and balanced N2. For both Pt/1Mo/TiO2and Pt/N-1Mo/TiO2catalysts, the H2O in the feed gas showed promotive effects on CO oxidation, while SO2caused some deactivation at low temperatures. Under the same feed gas composition (8000 ppm CO, 16% O2, 10% H2O, 50 ppm SO2and balanced N2) and temperature (185 °C), Pt/N-1Mo/TiO2demonstrated superior SO2resistance compared to Pt/1Mo/TiO2. CO conversion on Pt/N-1Mo/TiO2remained above 99% during a 12-h SO2resistance test, while that on Pt/1Mo/TiO2gradually decreased to 26%. Characterization results show that NH3pretreatment of 1Mo/TiO2significantly improved the dispersion of Pt and enhanced the dissociation of adsorbed H2O into highly reactive hydroxyl (*OH) species, partially explaining the better activity of Pt/N-1Mo/TiO2compared with Pt/1Mo/TiO2. H2O might promote CO oxidation by facilitating the formation of easily decomposable bicarbonate and formate intermediates. SO2impeded the Pt reduction process on Pt/1Mo/TiO2while it hardly affected that on Pt/N-1Mo/TiO2, explaining their difference in SO2resistance.
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Catalysts
·
2026
·Vol. 16
·期 5
·401
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IF 4.5
Boyu Chen,Yuanzhe Li,Liantao Yang,Biao Zhang,Hao Wang
To address the critical challenges of sluggish C-C coupling kinetics and the propensity for over hydrogenation to ethane (C2H6) in the photocatalytic CO2reduction to ethylene (C2H4), this study designed a synergistic bimetallic Pt/Co cluster catalyst supported on a covalent organic framework (COF), designated as PtCo-TpBD COF. This catalyst is designed to modulate the adsorption of key intermediates via Co clusters to suppress over-hydrogenation, while leveraging Pt clusters to promote C-C coupling, thereby achieving highly selective C2H4production. Through a series of structural characterization analyses, it was confirmed that Pt/Co clusters were successfully confined within the pores of the COF, and significant electronic interactions were observed. In situ infrared spectroscopy revealed that the introduction of Co clusters effectively weakens the adsorption strength of the CO* intermediate, while the incorporation of Pt clusters promotes C-C coupling. In visible-light-driven gas-phase CO2reduction, this catalyst delivered exceptional activity, reaching an C2H4formation rate of 7.54 μmol g−1h−1and an C2H4selectivity of 90.1%, along with remarkable inhibition of deep hydrogenation byproducts including C2H6. This study not only provides a successful example for constructing efficient bifunctional photocatalysts to achieve highly selective conversion of CO2to C2H4, but also highlights the great potential of COFs as advanced platforms for integrating multifunctional metal clusters and precisely tuning catalytic selectivity.
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FOOD CHEMISTRY
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2026
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IF 10.4
Yunpeng Xu,Dongbo Zhang,Shuping Mei,Jing Yu,Qiu Liu,Jicheng Yu
Photodeposited Pt/TiO₂ rings degraded 94.98% of LEV within 40 min. • Pt modification enhanced UV activity with low Pt leaching. • Dark controls and scavenger tests supported ROS-driven degradation. • LC–MS detected 18 products and supported five tentative pathways. • QSAR predicted reduced bioaccumulation for most products. A recoverable Pt/TiO 2 porous ceramic composite was prepared by photodeposition for ultraviolet (UV)-driven degradation of levofloxacin (LEV). The catalyst was characterized by structural, microscopic, surface, optical and elemental analyses, and its activity, stability, reactive species, transformation products and predicted toxicity were evaluated. Pt deposition preserved the anatase/rutile structure of P25 TiO 2 , introduced dispersed metallic Pt, enhanced long-wavelength absorption and improved LEV removal. Under optimized conditions (1.0 wt% Pt, 2.0 g/L catalyst, pH 9.0), 94.98 ± 0.56% of LEV was degraded within 40 min, outperforming TiO 2 . The composite retained high activity over six cycles with low Pt leaching. Scavenger tests indicated that •OH was the dominant reactive species, with h + and •O 2 − also contributing. LC–MS detected 18 transformation products and supported five tentative degradation pathways. Quantitative structure–activity relationship (QSAR) predictions predictions suggested reduced bioaccumulation and lower mutagenicity/developmental-toxicity concerns for several terminal products, although experimental toxicity validation remains necessary.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Ting Wu,Guang Li,Kuang Sheng,Zhaomin Lu,Qingfeng Yi,Hu Zhou
Trifunctional electrocatalysts for OER, HER, and ORR are highly desirable for integrated energy conversion and storage. Herein, a Pt-deposited NiEr layered double hydroxide electrode on nickel foam, denoted as NiErPt-LDH@NF, is developed as an efficient trifunctional electrocatalyst in alkaline media. NiErPt-LDH@NF delivers 307 mV for OER at 10 mA cm −2 , 15.7 mV for HER at 10 mA cm −2 , and an ORR E onset /E 1/2 of 0.94/0.92 V, together with fast kinetics, low charge-transfer resistance, and good durability. The superior performance originates mainly from the electronic interaction between Er and Pt, the resulting increase in electron density at Pt sites, and the formation of dual Pt-containing active phases that promote interfacial charge transfer. A symmetric alkaline electrolyzer based on NiErPt-LDH@NF requires only 1.82 V to reach 40 mA cm −2 and exhibits excellent operational stability, while a rechargeable zinc-air battery using NiErPt-LDH@NF as the air cathode delivers an open-circuit voltage of 1.488 V and a peak power density of 160.82 mW cm −2 . This work demonstrates that rare-earth metal-Pt coupling is an effective strategy for constructing multifunctional electrocatalysts for integrated energy applications.
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