Journal of the American Chemical Society
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2025
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IF 15.6
Qing Yao,Renjie Ren,Yuanmin Zhu,Wei Yan,Zhiyong Yu,Zhongliang Huang,Aiying Song,Haixin Lin,Lin Zhuang,Zhe-Ning Chen,Nanjun Chen,Xiaoqing Huang
The face-centered cubic (fcc) Ru exhibits great potential for the alkaline hydrogen oxidation reaction (HOR), while achieving high HOR activity and CO tolerance poses a formidable challenge for Ru catalysts in practical fuel cells, particularly when using CO-contaminated H2, such as gray and blue hydrogen. Here, we propose a compositional diversification strategy to create 14 types of fcc Ru-based alloys, in which adjustable compositions can tune the nanostructure while offsetting the limitations of single Ru. Among them, quinary RuInPtNiCu nanocrystals (NCs) exhibit an outstanding HOR activity of 5.36 A mgPGM–1, which is 15.9 and 2.9 times higher than those of commercial Pt/C (0.338 A mgPGM–1) and single Ru NCs (1.88 A mgPGM–1), respectively. More importantly, the RuInPtNiCu-based membrane electrode assembly (MEA) achieves a high peak power density of 1.72 W cm–2 and a remarkable mass activity of 19.0 A mgPGM–1@0.65 V in H2–O2, and the RuInPtNiCu-based MEA can be run stably at 0.6 A cm–2 for over 100 h. Moreover, the RuInPtNiCu retains 94.6% of the HOR current after exposure to H2 containing 1000 ppm CO for 8000 s in a rotating disk electrode and retains 92.5% of cell voltage after a CO-toxicity stability test in fuel cells, underscoring its exceptional CO tolerance. Mechanism and computation studies corroborate that the optimized electronic structure and atomic configuration of RuInPtNiCu weaken the adsorption of surface species (*H, *OH, and CO) and alter the CO adsorption mode on active sites, thus leading to enhanced HOR performance and CO tolerance.
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高影响因子
ACS Applied Nano Materials
·
2025
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IF 5.5
Jing Yu,Zhengtao Xu,Yiling Ruan,Jiarui Qi,Xiaolian Sun,Shenglei Che
Ferroptosis is an immunogenic form of cell death characterized by iron-dependent lipid peroxidation. The balance between Fe2+ and Fe3+ is crucial in inducing ferroptosis, where Fe2+ primarily initiates the Fenton reaction to generate reactive oxygen species (ROS), resulting in lipid peroxidation and subsequent cell damage. However, the instability of Fe2+, due to its susceptibility to oxidation into Fe3+, poses challenges for effectively triggering ferroptosis. In this study, we report a synthetic method for creating Fe2+-rich nanoworms regulated by oleyl amine, which effectively stabilizes Fe2+. These nanoworms exhibited exceptional efficacy in producing ROS through high Fe2+ proportion and glutathione (GSH) consumption by Fe3+, thereby initiating lipid peroxidation (LPO) and subsequent induction of ferroptosis and immunogenic cell death. The conjugation with tumor-penetrating peptide (iRGD) endowed the accumulation at tumor sites. After coupling with αPD-L1, these nanoworms significantly enhanced their tumor inhibition rate through the combination of ferroptosis and immunotherapy, reducing the tumor volume to 22.52%. This work provides a promising material for combined tumor therapy by inducing ferroptosis and downstream immunotherapy.
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CHEMICAL ENGINEERING SCIENCE
·
2025
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IF 4.3
Jiejie Meng,Lingzheng Bu,Duo Wang
The paper presents the design of an electrocatalyst named Mo-Pt/Ni-CNTs, which combines the advantages of strong metal-support interaction and the synergistic effect of active sites. In a three-electrode electrochemical measurement, the Mo-Pt/Ni-CNTs demonstrates a lower overpotential of 29.2 mV at 10 mA cm −2 , and a favorable Tafel slope of 33.7 mV decade −1 in comparison to Pt/C catalyst in 1.0 M KOH. Furthermore, the anion exchange membrane water electrolyzer cell achieves a low cell voltage of 2.41 V at 2 A cm −2 (in 1.0 M KOH solution at 80 °C). In-situ Raman analysis and DFT calculations reveal that introducing Mo atoms into the Pt sites and loading them onto the special carbon nanotubes, which are wrapped nickel (Ni-CNTs), can not only change the Pt valence state and electrical structure, but also form the strong metal-support interactions between Mo-Pt nanoparticles and Ni-CNTs.
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Journal of Physical Chemistry C
·
2025
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IF 3.2
Chenhao Wu,Hao Hu,Zhen Fang,Hao Shan,Jiakang Tian,Zhenpeng Yao,Wenpei Gao,Wen Shang,Tao Deng,Jianbo Wu
Icosahedrons with a high density of twin boundaries exhibit high performance in oxygen reduction reaction (ORR) but might be considered to exhibit poor stability due to the selective dissolution of Pd atoms from the cores through the twin boundaries. Here, we utilize in situ liquid cell transmission electron microscopy (LC-TEM) to monitor the corrosion behavior of icosahedral Palladium@Platinum (Pd@Pt) core–shell nanoparticles in real time. We demonstrated that twin boundaries bring in numerous defects as the initial corrosion sites and high-strain agglomeration to accelerate the corrosion compared to the octahedrons. After the twin boundaries’ corrosion finishes, the high curvature (HC) path appears and plays a vital role during corrosion. Those insights help us to further understand the effect of twin boundaries on catalyst degradation and engineer durable morphology-controlled Pd@Pt nanoparticles.
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INORGANIC CHEMISTRY
·
2025
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IF 4.7
Zilong Xu,Song Chen,Bingqian Zu,Xudong Wu,Guoqiang Liu,Liang Wu
Precise control over the stoichiometry and phase of tin sulfide (SnSx) nanomaterials is critical for their potential applications in energy conversion and storage devices, which remains challenging. Here, we report a precursor-mediated colloidal method to achieve phase-controlled synthesis of single-crystalline (SC) SnSx nanosheets. By employing Sn(acac)2Cl2/S and SnCl2·2H2O/1-DDT as precursors, hexagonal SC SnS2 nanosheets and orthorhombic SC SnS nanosheets were successfully synthesized, respectively. The photoelectrochemical (PEC) performance of both samples as photoanodes for water oxidation was further studied. The SC SnS2 nanosheet photoanode achieves a PEC performance of 1500 μA cm–2 at 1.23 VRHE with a half-cell solar-to-hydrogen conversion efficiency of 0.85%, outperforming the SC SnS nanosheet photoanodes. Meanwhile, this precursor-mediated method can be readily extended to the phase- and stoichiometry-controlled synthesis of other 2D nanomaterials, which hold great potential in photocatalysis and photoelectrochemical applications.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yichi Zhong,Jian Huang,Yuan Xiang,Kun Qian,Zhanpeng Wang,Qian Wang,Jingzhou Li,Hongxing Dong,Long Zhang
Zero-dimensional perovskite Cs 4 PbBr 6 nanocrystals have attracted considerable attention for their potential in optoelectronic and sensing applications due to their excellent optoelectronic properties and environmental stability. However, their non-emissive property has limited their development in luminescent applications. Fortunately, the reversible phase transition between Cs 4 PbBr 6 and CsPbBr 3 nanocrystals provides a promising strategy to address this limitation. This study investigates the phase transition mechanism induced by the micro-environment factors, with a particular focus on the evolution of optical properties. Small droplets of Cs 4 PbBr 6 nanocrystals were exposed to air, and real-time monitoring of their color changes and photoluminescent emission characteristics was conducted. The results reveal that the large surface area of the droplet facilitates solvent evaporation, which accelerates the phase transition of Cs 4 PbBr 6 nanocrystals, leading to a significant enhancement in photoluminescent brightness. By quantitatively correlating environmental humidity with the phase conversion rate, this work highlights the critical role of humidity in modulating the conversion kinetics. Furthermore, the study systematically explores the mechanism of tuning the photoluminescent emission peak by adjusting the surface ligands, which enables the development of an environment-responsive, color-changing optical device based on droplet dynamics.
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COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Jing Li,Yu Zhang,Hui Wei,Tao Ma,Fanfan Liu,Feng Hu,Wei Xu,Zhiyu Tao,Simin Xia,Qiang Cui,Nannan Wang,Hehe Wei
Developing electrocatalysts with ultrahigh activity and industrial-grade durability is critical for advancing green hydrogen production. This study develops a facile oil-phase method to synthesize PtPdRuNiMo HEA nanoparticles that are simultaneously nucleated, alloyed and immobilized on one-dimensional carbon nanotubes (CNTs). The unique 0D/1D architecture simultaneously prevents nanoparticle aggregation and maximizes active site exposure, while the CNT network enhances charge/mass transfer. The optimized catalyst delivers record-low overpotentials of 6.7 mV (10 mA cm −2 ) and 202.0 mV (800 mA cm −2 ) in alkaline media, with exceptional stability exceeding 500 h. Density functional theory calculations reveal that the multi-metallic synergy in PtPdRuNiMo optimally tunes the electronic structure, accelerating both water dissociation and hydrogen adsorption kinetics. This work establishes new standards for designing next-generation electrocatalysts that combine atomic-level precision with industrial-scale performance, representing a significant leap forward in sustainable hydrogen production technologies.
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INORGANIC CHEMISTRY
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2025
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IF 4.7
Zhuolu Li,Yi Wu,Zhangwei Guo,Jiaxin Rui,Zhaogang Teng,Song Wang,Kai Pan
Double perovskite materials are promising lead-free alternatives due to their low toxicity and high stability. However, their large indirect bandgap limits optical performance. Morphology control offers an effective enhancement strategy. Here, cesium oleate (Cs-OA) and bromotrimethylsilane (TMS-Br) were injected into an oleic acid-free precursor. The OA present reacts with oleylamine (OAm) to form oleylammonium oleate (OAmH+·OA–), which, synergistically with OAm, enhances Ag+ and Bi3+ solubility. TMS-Br then provides bromide, triggering rapid nucleation of Cs2AgBiBr6 nanoclusters. Under thermodynamic control, these grow into uniform nanocrystals. Over time, multiple nanowires self-assemble and fuse into one-dimensional structures. Time-resolved photoluminescence shows a prolonged exciton lifetime of 19.0 ns, indicating low defect density. Temperature-dependent PL confirms a large exciton binding energy (61.1 meV), weak nonradiative recombination, and strong luminescence potential. The nanowires also exhibit excellent stability, retaining over 90% of their PL intensity after 90 days at room temperature.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
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IF 8.1
Cuizhen Yang,Tianyi Wang,Tingyao Wang,Haiyan He,Dongming Liu,Huajie Huang
The rapid development of direct formic acid fuel cell (DFAFC) and direct methanol fuel cell (DMFC) technologies urgently needs to explore efficient and multifunctional electrocatalysts with acceptable costs. In this work, we introduce a convenient soft-chemistry method for the bottom-up synthesis of two-dimensional (2D) ultrathin PdMo bimetallene in situ immobilized on reduced graphene oxide nanosheets (PdMo/RGO) by a robust stereoassembly procedure. The as-derived PdMo/RGO nanoarchitecture possesses a range of unique structural advantages tailored for anodic fuel cell systems , such as numerous exposed Pd atoms, bimetallic alloy and strain effects, stable 2D/2D heterointerfaces, and good electrical conductivity . As a result, the PdMo/RGO nanoarchitecture exhibits a large electrochemically active surface areas of 122.2 m 2 g −1 , a high mass activity of 994.8 mA mg −1 , as well as reliable long-term durability towards the formic acid oxidation reaction. Meanwhile, the PdMo/RGO electrocatalyst also displays exceptional electrocatalytic methanol oxidation performance with a mass activity of 1605.3 mA mg −1 in alkaline medium, which significantly surpasses that of conventional Pd nanoparticle catalysts loaded on reduced graphene oxide , carbon nanotube , and carbon black matrices.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Shuwen Huang,Xiaoming Mo,Shulin Han,Huasong Liang,Lei Cai,Sheng Cao,Bingsuo Zou,Jinju Zheng,Jialong Zhao
High-performance pure-red perovskite light-emitting diodes (PeLEDs) are promising candidates for optoelectronic applications due to their remarkable photophysical properties. However, the unstable surface and insulating long-chain capping ligands of perovskite quantum dots (QDs) pose challenges to their commercialization by compromising stability and performance. Here, a simple but effective approach was demonstrated to synthesize highly stable red CsPbI3 QDs by introducing a multifunctional molecule, phenformin hydrochloride (PhenHCl), as an additive ligand. While the biguanide functional group in PhenHCl formed multiple hydrogen-bond interactions with the lead halide octahedron, the excess Cl– anions compensated for the iodine vacancies and eliminated trap states in the CsPbI3 QDs. The synergistic effect of the biguanide functional group and halogen compensation significantly passivated surface defects of the red CsPbI3 QDs, yielding a photoluminescence (PL) quantum yield of 98.6% and excellent ambient stability with 90% PL intensity retention over 80 days. The resulting pure-red PeLEDs based on the PhenHCl-treated CsPbI3 QDs were demonstrated to show a remarkable enhancement in the electroluminescence performance at around 649 nm, with an external quantum efficiency of 13.38%, and a maximum luminance of 2159 cd m–2. Our findings in this work provide an avenue by modulating the surface chemistry of CsPbI3 QDs to enhance the performance of pure-red PeLEDs.
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ChemNanoMat
·
2025
·
IF 2.6
Zhixin Gao,Meng Yan,Zhen Sun,Teng Wang,Yaoming Zhang,Sen Lin,Yong Yang
Porous layered hydroxides has garnered significant attention for ion adsorption applications due to their unique combination of layered and porous structures. Herein, porous layered lanthanum hydroxide nanowires (NWs) is synthesized to efficiently adsorb Br − , utilizing the modulation of interlayer ions to optimize their performance. These NWs exhibit a porous surface structure and a positively charged surface, which increases the number of active sites and enhances their affinity for Br − . The layered hydroxide lanthanum acetate (LHL-acetate) NWs possess an adsorption capacity of 221 mg g −1 , a wide range of pH suitability (from 3.0 to 10.0) and remarkable stability, surpassing many previously reported adsorbents. The superior Br − adsorption performance of LHL-acetate NWs can be attributed to the synergistic effect between ion-exchange properties of interlayer anions and surface adsorption facilitated by the porous structure, which strengthens electrostatic interactions at the adsorbent-solution interface. Impressively, these NWs achieved 100% Br − removal from simulated wastewater with varying initial concentrations and flow rates in a fixed-bed adsorption system, highlighting the effectiveness of LHL-acetate NWs for advanced Br − removal in practical applications. This study reveals the structure-reactivity relationship of porous layered lanthanum hydroxide adsorbents and offers insights for the application of such materials in the adsorption domain.
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Journal of Physical Chemistry C
·
2025
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IF 3.2
Ke Wang,Chaoqing Dong,Xiangyi Huang,Ke Gong,Xue Yang,Xuedan Zhang,Aidi Zhang,Jicun Ren
Quantum dots (QDs) were emerging as compelling candidates for optoelectronic applications, attributed to their unique size-tunable optical characteristics, narrow emission spectra, and superior photoluminescent quantum yield (PLQY). Notably, the low toxicity of InP materials makes them a promising alternative in the field of environmentally friendly optoelectronic components compared to QDs containing toxic elements (such as Cd, Hg, and Pb). However, synthetic conditions of InP QDs were extremely harsh, and the reagents were very expensive. In this study, we reported a new method for the synthesis of Gd-doped InP/ZnSe/ZnS QDs by using two inexpensive and low-reactivity phosphine precursors as the phosphorus source at a lower temperature. The InP QDs were synthesized via a one-pot solvothermal method, incorporating rare-earth Gd ions as dopants during the core growth process, and the influence of Gd doping on their stability was investigated. Gd:InP/ZnSe/ZnS QDs exhibited improved stability, as evidenced by their enhanced resistance to photo- and thermal degradation. And first-principles method reveals that Gd doping introduces shallow trap states that effectively passivates surface defects, which contribute to the overall stability of quantum dots. Furthermore, Gd:InP/ZnSe/ZnS QDs were integrated into QDs enhanced film (QDEFs) for LCD backlight display with excellent reliability performance over 2000 h.
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