JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Cheng Pan,Changlin Dong,Wenshu Chen,Shenhua Qian,Jingxiang Yin,Yongping Du,Leiming Lang,Guoqiang Luo,Jian Zhang
Monolayer Pt doped 1T phase MoS 2 quantum sheets (Pt/1T–QSs) were synthesized. • The Pt/1T–QSs show 70% metallic 1T phase with a lateral size of ca. 6.1 nm. • Pt doping collaboratively activate both basal and edge sites of MoS 2 for HER. • The Pt/1T–QSs exhibit exceptional alkaline HER performance. Transition metal disulfides (TMDs) are considered as promising alkaline hydrogen evolution reaction (HER) catalysts; however, their catalytic activity remains far from satisfactory. This is primarily due to the relatively low HER activity of both basal and edge sites. Herein, a strategy of synthesizing Pt doped 1T phase MoS 2 quantum sheets (Pt/1T–QS) for co-activating both basal and edge sites is reported for addressing the aforementioned issue. The developed strategy employs a wet-chemical synthetic route encompassing a hydrothermal doping reaction, a subsequent chemical lithiation, and a final liquid exfoliation process to prepare the desired Pt/1T–QSs (monolayered with lateral size of ca. 6.1 nm). Notably, the Pt/1T–QSs demonstrate exceptional alkaline HER performance, presenting a low overpotential of 203 mV at 300 mA cm −2 and excellent durability for over 120 h at 100 mA cm −2 in 1 M KOH. Theoretical calculations reveal that Pt doping induces pronounced up-shifts for the p −/ d –band centers and collaboratively optimized ΔG H at both basal and edge sites in 1T–QS, thereby accelerating water dissociation kinetics and enhancing alkaline HER performance. This work offers a generalizable strategy for overcoming the conventional edge-dominated activity paradigm of TMD-based catalysts and may advance the rational design of high-performance alkaline HER catalysts with multi-site activation. A rational designed catalyst of Pt doped 1T phase MoS 2 quantum sheet (Pt/1T–QS) material was prepared, characterized by monolayer thickness, quantum sized, dominant 1T phase, and uniformly distributed Pt dopants. The Pt doping collaboratively activates both the basal and edge sites of 1T–QS by accelerating water dissociation kinetics and optimizing hydrogen adsorption energies, resulting in outstanding alkaline HER performance. Download: Download high-res image (150KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yong Yan,Xigui Lan,Yuzhou Li,Zhihao Xiong,Meihua Liang,Jiaxuan Yang,Xiaodong Liu,Rongrong Jia,Yuanyuan Ge,Lian Duan,Mitsuo Shoji,Yasuteru Shigeta,Zhili Li,Lei Huang
With the rapid development of the hydrogen energy economy, there is an increasingly urgent demand for low-power-consumption and integrable sensors capable of accurate and real-time monitoring of hydrogen (H2). In this study, SnO2 nanoparticles rich in oxygen vacancies were successfully prepared via a metal–organic framework (MOF)-derived method. Based on this, highly dispersed Pt-modified SnO2 nanoparticles were fabricated using a two-step annealing method, and a MEMS H2 sensor with high response and low power consumption was developed. Studies have shown that the 0.5%Pt-SnMOF/600-SnO2 sensor exhibits a high response of 31.5 to 100 ppm of H2 at an operating temperature of 201 °C, which is 2.7 times that of the SnMOF/600-SnO2 sensor (with an optimal operating temperature of 244 °C), and its power consumption is only 22.1 mW. Furthermore, this sensor demonstrates excellent comprehensive performance, including an extremely low limit of detection of 73.6 ppb, outstanding selectivity, and good long-term stability. Mechanistic studies indicate that the enhancement of gas-sensing performance is due to a combination of factors: plentiful oxygen vacancies, the role of Pt in promoting oxygen reactions, and its effect on the material’s electronic properties.
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高影响因子
JOURNAL OF CATALYSIS
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2026
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IF 6
Yu-Jun Xu,Shuo Zhang,Jun Cai,Yan-Xia Chen
Organic cations, such as tetraalkylammonium salts, have been reported to enhance oxygen reduction reaction (ORR) kinetics. However, the promotion effect is not well reproducible and precise mechanisms remain unclear. In order to unveil possible impact from trace impurities, we reevaluate the ORR activity of Pt(1 1 1) electrodes in both acidic and alkaline solutions containing tetraalkylammonium cations. A significant enhancement in ORR activity (with a positive shift of ∼40–45 mV in the half-wave potential for ORR is only observed with tetrahexylammonium cation from one company. By conducting a systematic inquiry, we find that cation hydrophobicity is unlikely to be the dominant origin of the observed effect under the low-concentration regime and experimental conditions studied here. After considering the impact of most species present under our experimental conditions and excluding the most plausible alternative explanations, we identify that an iodine adlayer (I*) is likely a major contributor to the enhanced ORR kinetics. This adlayer forms on the Pt(1 1 1) surface probably through adsorption of trace iodine-derived impurities present in the organic cationic reagent. Our result overturns the previous consensus that I* always poisons the electrocatalytic reaction. Our systematic studies unveil that whether I* acts as a poison or a promoter, its coverage is crucial. This finding offers a new strategy for optimizing catalyst design through deliberate control of additive levels, furthermore, it also highlights the critical importance of rigorous impurity monitoring in electrochemical experiments. The impact of organic cations in electrocatalytic activity as well as necesscity of exploring the broader implications of trace impurities in electrocatalysis are discussed.
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Molecular Catalysis
·
2026
·
IF 4.3
Haonan Ying,Zheng Xiong,Xinwei Yang,Min Ding,Li Wang,Yun Guo,Yanglong Guo,Wangcheng Zhan,Jihang Yu,Aiyong Wang
Co 3 O 4 is a promising catalyst for propane combustion but is limited by poor water resistance and insufficient high-temperature stability. Noble metal loading is widely employed to enhance its performance, however, the metal-specific effects remain poorly understood. In this work, Co 3 O 4 -supported Pt, Pd, and Ru catalysts were systematically investigated for propane oxidation. It was found that all noble metals decreased the surface Co 2+ content and oxygen vacancies, leading to modified redox behavior and propane activation ability. Among them, Ru incorporation enhanced the catalytic activity (T 90 = 266 °C) of Co 3 O 4 (T 90 = 286 °C) and significantly improved its water resistance and thermal stability. These improvements are mainly attributed to the abundant partially oxidized RuO x species, which provide additional active sites and facilitate propane adsorption and activation. In contrast, Pt and Pd modification inhibited propane oxidation due to the intrinsically low activity of highly oxidized Pt species and PdO, as well as the coverage of Co 3 O 4 active sites caused by highly dispersed Pt and particulate PdO. The findings offer mechanistic insights for the rational design of efficient catalysts for propane combustion and VOCs abatement.
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Pharmaceuticals
·
2026
·Vol. 19
·期 3
·386
·
IF 5.7
Panxing Qiu,Yu Zhang,Yang Dou,Zhijin Cheng,Xiaoqin Wu,Silong Zhang,Fuyi Wang,Kui Wu
Background : To battle the side effects of anticancer Pt(II) drug cisplatin, the development of photoactivatable and/or intracellular reduction-activatable Pt(IV) prodrugs has become a promising strategy. Methods: Herein, two novel Pt(IV) prodrugs, namely, cis , cis , trans -[Pt IV (NH 3 ) 2 (Cl) 2 (OH)(probenecid)]) (SPP) and cis , cis , trans -[Pt IV (NH 3 ) 2 (Cl) 2 (probenecid) 2 ] (DPP) bearing mono- and di-probenecid at the axial positions of oxoplatin have been synthesized via covalently linking of carboxylate group in probenecid, which is a well-established clinic drug by inhibiting organic anion transporter 1 (OAT1) to reduce cisplatin-induced nephrotoxicity, with the axial hydroxyl group(s) in oxoplatin. The promising cytotoxicity of SPP and DPP against MCF-7, T47D breast cancer cells and the MDA-MB-231 triple-negative breast cancer cells was evaluated, and the mechanism of action of the two Pt(IV) prodrugs was investigated by apoptosis assay and Western blot assay. Results : SPP exhibits a comparable cytotoxicity to cisplatin against MCF-7 and T47D breast cancer cells, while it shows 2.1-fold higher cytotoxicity than cisplatin against MDA-MB-231 cells. DPP was shown to be more cytotoxic than SPP, and exhibits 8.7-, 7.5-, and 2.3-fold higher cytotoxicity than cisplatin against MCF-7, T47D, and MDA-MB-231 cells, respectively. Apoptosis assays revealed a similar early-apoptotic cell death mechanism to cisplatin for both SPP and DPP. The enhanced cellular and nuclear uptake of DPP compared to cisplatin contributes to its promising anticancer efficacy. DPP can bind to OAT1 in cancer cells, which may synergistically enhance the cytotoxicity of the Pt(IV) anticancer prodrugs. Conclusions : The direct conjugation of probenecid to the axial positions of oxoplatin confers the resulting Pt(IV) prodrugs a multitargeting property, significantly promoting the cytotoxicity of the resulting Pt(IV) complexes. This finding provides a practical strategy for drug design and cancer treatment based on platinum complexes.
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JOURNAL OF CATALYSIS
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2026
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IF 6
Lin Luo,Shaoyu Yuan,Weidong Li,Renjie Huang,Zheng Li,Yunchao Feng,Zihao Qin,Yu Qiu,Chao Wang,Aiyong He,Xianhai Zeng
Reducing interface engineering to the atomic scale can significantly improve catalytic performance, but it is extremely challenging. Herein, we report a Co–Ce composite metal oxide-supported single-atom Pt catalyst with dual interfacial sites for the hydrodeoxygenation (HDO) of guaiacol to cyclohexanol. The 0.1wt.%Pt/Co 2 Ce 1 O x exhibited the best performance and good reusability, achieving 100% guaiacol conversion and 96.1% selectivity toward cyclohexanol. We successfully correlated ultralow active metal content with high catalytic activity, and achieved the maximum utilization efficiency of precious metal atoms. The high HDO activity of the catalyst is mainly attributed to the unique interfacial effect between the single-atom Pt and CoO, which significantly enhances the adsorption and activation of H 2 molecules. In addition, the 0.1wt.%Pt/Co 2 Ce 1 O x exhibits excellent substrate universality in HDO of various lignin-derived monomers and can also convert lignin to cyclic alcohols in a one-pot process. This work demonstrates the superiority of low-loading single-atom catalysts based on composite metal oxides in HDO reactions and suggests a renewable strategy for replacing of fossil-based cyclohexanol via lignin upgrading.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Shaopei Jia,Yunfei Cao,Xiaofei Ma,Shihao Liu,Caiyu Li,Qian Zhang,Quan Huang,Yunchao Mu
Developing bifunctional electrocatalysts with high activity and durability is critical for efficient electrochemical water splitting. In this study, using three-dimensional graphene (3DG) as the scaffold, trace Pt-doped FeCoNiMnCr high-entropy alloy (HEA) nanoparticles (≈ 4.4 nm) were in situ dispersed and anchored onto the pore walls of 3DG via impregnation adsorption followed by ultrafast Joule heating. The porous 3DG scaffold provides adsorption and anchoring sites for the metal precursors, enabling a uniform nanoparticle distribution after ultrafast Joule heating. The resulting composite exhibited bifunctional hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activity in both alkaline and alkaline NaCl electrolytes. In an alkaline NaCl electrolyte (1.0 M KOH + 0.5 M NaCl), the catalyst required overpotentials of only 82.4 mV for the HER and 256.1 mV for the OER to achieve a current density of 10 mA cm −2 . A symmetric two-electrode electrolyzer assembled with FeCoNiMnCr/Pt@3DG electrodes showed no significant performance degradation after 50 h of continuous operation at 100 mA cm −2 . Notably, this synthetic strategy offers a new approach to enhancing the electrocatalytic performance of nanostructured high-entropy materials. These results establish ultrafast Joule heating of precursors supported on 3DG as a viable route for preparing low-Pt multicomponent electrocatalysts.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xinhui Gao,Yaqi Wang,Yongcheng Zhang,Shuzhi Sam Ge,Xiangxia Wei
High-performance lead-based relaxor-ferroelectric Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) piezoceramics constitute a critical class of functional materials for advanced electromechanical transduction. However, achieving further performance enhancement is fundamentally hindered by the complexity of compositional optimization, particularly the choice of rare-earth dopant species and their precise concentrations. Machine learning (ML) has emerged as a transformative tool for navigating these high-dimensional compositional spaces and decoding complex physical origins. Herein, an interpretable and uncertainty-informed ML framework is developed to systematically investigate the piezoelectric coefficient ( d 33 ) of rare-earth-doped PMN-PT ceramics. By integrating ensemble regression with a multidimensional interpretability scheme, the framework explicitly decodes the underlying physical mechanisms, identifying the key factors governing d 33 variation, including rare-earth concentration, local structural disorder, B-site electronegativity, and lattice geometry. Guided by these insights, Sm and Eu are identified as the most promising dopants, with the highest predicted d 33 occurring near 2.5 mol% substitution. Predictive uncertainty remains well-controlled within the high-performance compositional domain near the morphotropic phase boundary (MPB), where the localized variance reflects the intrinsic structural instability and strong phase competition. This work establishes an interpretable and reliability-aware framework for deciphering complex solid solutions, bridging the gap between atomic-scale descriptors and macroscopic electromechanical properties.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
·
IF 4.1
Feitao Fan,Yiting Che,Vadim Efimov,Kuzmin Anton,Shitan Yan,Ting Bian
Developing efficient and durable platinum-based catalysts for the oxygen reduction reaction (ORR) is a major challenge. In this work two Platinum-Zinc Hofmann-type Metal-Organic Frameworks are synthesized by ligand regulation, one with 4,4′-dipyridyl disulfide introducing sulfur and the other with 4,4′-azopyridine as a sulfur-free analogue. After pyrolysis, the sulfur-containing precursor yields small Pt nanoparticles embedded in a sulfur and nitrogen co-doped carbon matrix (Pt/SNC), while the sulfur-free precursor forms intermetallic L1₀-PtZn on nitrogen-doped carbon (L1 0 -PtZn/NC). Zn evaporation and S/N co-doping in Pt/SNC optimize Pt dispersion, tune electronic structures, and strengthen Pt–carbon interactions, whereas the absence of sulfur stabilizes the L1₀-PtZn phase. Pt/SNC shows much smaller particle sizes (~4.98 nm) than L1 0 -PtZn/NC (~10.61 nm) and exhibits the best ORR performance with a half-wave potential of 0.88 V, surpassing Pt/C (0.86 V) and L1 0 -PtZn/NC (0.79 V). Its specific and mass activities are 1.6/1.8 times higher than Pt/C and 2.85/6.4 times higher than L1 0 -PtZn/NC. Durability tests confirm that Pt/SNC retains 78 % of its mass activity after 60,000 cycles. These results demonstrate the effectiveness of ligand regulation and S/N co-doping in designing high-performance Pt-based electrocatalysts.
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 7
·1-14
·
IF 2.4
Ren Xiaohong,Bao Zien,Wang Yong,Yu Xiaoqiang,Rong Zeming
To address the low hydrogenolysis efficiency of 4-O-5 bonds in lignin catalytic conversion, Ni-Pt/HZSM-5 bimetallic catalyst with a Ni/Pt molar ratio of 47:1 was developed using diphenyl ether (DPE) as a model compound. The results revealed that electron transfer from Ni to Pt induced a positive charge on the Ni surface, significantly enhancing its adsorption and activation capacity toward electron-rich 4-O-5 bonds. At 100 °C and 5 bar H 2 , the conversion of DPE reached 90.3% with 93.1% selectivity (phenol and benzene) and Ni-Pt/HZSM-5 retained stable over five cycles of use. When Ni-Pt/HZSM-5 was applied to pine sulfate lignin depolymerization at 220 °C and 5 bar H 2 , with yields of 12.9 wt% for phenol and 4-propylphenol and 16.3 wt% for methoxy phenolic compounds. Overall, this study would promote the application and development of high-efficiency bimetallic catalysts for the production of valuable chemicals from biomass. Graphical
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Si-Chen Tan,Fu-Rui Teng,Yue Huang,Shuai Zhang,Ai-Dong Li
Flexible strain sensors have garnered significant interest in healthcare monitoring, intelligent robots, and human–computer interaction. Nevertheless, it is difficult for conventional hydrogel strain sensors to achieve high sensitivity, a wide stretching range, and good self-healing performance simultaneously. Herein, we fabricated a poly(acrylic acid) (PAA) nanocomposite hydrogel strain sensor by incorporating Pt nanoparticles (NPs)-modified MXene and tannic acid (TA) to the hydrogel network (denoted as PAA-TA@Pt@MXene). The structure, morphology, and mechanical and sensing properties have been investigated. The optimal processing for the hydrogel strain sensor was obtained, such as TA contents and Pt NPs loading amount. The optimized sensor exhibits high sensitivity with a gauge factor (GF) of 4.62, an ultrastretchable range up to 2862%, better self-healing efficiency of 84.9%, and robust durability of 1500 cycles, indicating superb mechanical properties. This can be ascribed to the synergistic effect of TA and Pt NPs decorated with MXene. TA evidently increases the hydrogen bond density and strength between PAA and MXene, conducive to stretchability and self-healing. In addition, Pt NPs improve the charge carrier between Pt and MXene due to the tunneling effect, which is beneficial to the GF value. Moreover, the combination of excellent sensing performance and good skin adhesion enables the sensors’ powerful human motion detection capability. The PAA-TA@Pt@MXene sensors achieve a 98.3% accuracy rate in various gesture recognitions after 10 epochs using a convolutional neural network. Our work provides an effective method for significantly enhancing the performance of self-healing hydrogel strain sensors with an ultrawide working range, thereby promoting their application in flexible electronics.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Congyue Sun,Yuqing Zhang,Longfei Xia,Dongyan Xu,Xiaojin Li,Ke Ye
It is crucial to develop efficient, highly durable platinum-based oxygen reduction reaction (ORR) catalysts to advance fuel cell development. In this study, a series of N-doped graphene-like carbon (NGC) materials was synthesized by pyrolyzing a mixture of glucose and graphitic carbon nitride (g-C 3 N 4 ), with g-C 3 N 4 acting as both a structural template and a nitrogen source. An NGC material containing approximately 6.9% N was obtained at a mass ratio of 4:1 for g-C 3 N 4 to glucose and a pyrolysis temperature of 900 °C. PtCo alloy nanoparticles were homogeneously anchored onto NGC via an impregnation-ethylene glycol reduction method. A core-shell structured catalyst consisting of a Pt shell surrounding a PtCo alloy core was subsequently fabricated by annealing the PtCo/NGC composite at 700 °C. The resulting Pt@PtCo/NGC catalyst exhibits superior ORR activity, with mass activity 3.22 and 3.25 times higher than that of a commercial Pt/C catalyst under acidic and alkaline conditions, respectively. Furthermore, the ORR mechanism was systematically investigated through combined material characterization, electrochemical analysis, and DFT calculations, providing deeper insight into the electrocatalytic structure-activity relationship.
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