JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Li Tian,Tao Hu,Yawen Guo,Peng Ju,Xiujuan Chen,Yueming Li,Xuedong Bai,Guorui Zhao
The design of self-supporting structure is particularly important to improve the stability and electrochemical performance of hydrogen evolution reaction electrode. Here, a facile strategy for building novel ultra-stable 0D-2D-3D integrated self-supporting electrode with high conductivity, sufficient diffusion channels and large reactive surface area was proposed. In the heterostructure, 2D Ti 3 C 2 T x flakes in-situ synthesized on 3D network porous Ti 3 AlC 2 surface which provides the multiple reactive surface areas and aggregation resistance to facilitating 0D ultrafine Pt nanoparticles uniform anchorage. Combined with structural characterization and first-principles calculations revealed that, the highly dispersed ultrafine Pt synergistically coupling strong metal-support interactions creates a unique multifunctional catalytic interface with high stability and atomic utilization efficiency of Pt to promote the HER in acidic and seawater. The resultant self-supporting electrode (support 0.48 wt% Pt) exhibits much superior activity to 10 % commercial Pt/C (loaded on foam nickel) in 0.5 M H 2 SO 4 (55 mV@10 mA cm −2 ) and simulate seawater (196 mV@10 mA cm −2 ) while reducing the Pt usage by 15 times. Meanwhile, the electrode also illustrates outstanding stability under high current densities (100 h@100 mA cm −2 ). This study provides a new design idea for developing integrated self-supporting catalytic electrodes to meet the durability of hydrogen evolution reaction applications in harsh environments.
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高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-17
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IF 36.3
Zhou Wenbo,Huang Yichao,Cai Hanqing,Wang Tao,Li Haitao,Zhang Chao,Zhao Lianming,Chen Lulu,Liao Meihong,Tang Zhiqing,Chen Kai,Gu Jing,Gao Wenpei,Fan Zhuangjun,Wen Zhenhai
A strongly coupled platinum/molybdenum nitrides nanocluster heterostructure has been prepared by using Pt-containing Anderson-type polyoxometalates as precursors.
The pronounced electronic coupling at the Pt/Mo 2 N cluster interface facilitates the catalytic decomposition of H 2 O through synergistic stabilization of Pt-H * and Mo-OH * .
The optimized Pt/Mo 2 N-NrGO exhibits a remarkably low overpotential, high mass activity, and exceptional long-term durability (>500 h at 1500 mA cm -2 ) in a practical anion-exchange membrane water electrolyzer.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·
IF 3.1
Wenbin Wen,Yuan Dang,Jieli Tang,Changluo Su,Sha Yu,Junping Ma,Yuanzhen Zhou
Rapid and accurate detection of hydrogen peroxide (H2O2), an important reactive oxygen species (ROS) released from living cells, is of great significance for early diagnosis of tumors. Here, a high sensitive enzyme-free electrochemical sensor for the detection of H2O2 released from living cells was constructed based on MXene@ZIF-8@Pt NPs nanocomposites. Through the characterization of physical and chemical properties, it was observed that Pt NPs with excellent catalytic activity were uniformly supported on MXene@ZIF-8, which exhibited excellent conductivity and large specific surface area. Thanks to the significantly enhanced catalytic activity derived from the successful integration of MXene, ZIF-8 and Pt NPs, under the optimal conditions, the sensing platform based on MXene@ZIF-8@Pt NPs exhibited a wide linear range from 355.4 nM to 21.75 mM, with a limit of detection as low as 120.9 nM, while showing satisfactory reproducibility and selectivity. Furthermore, the developed electrochemical sensor enables real-time monitoring of H2O2 released from living Hela cells under N-formylmethionyl-leucyl-phenylalanine stimulation. Overall, the MXene@ZIF-8@Pt NPs developed in this article will become a promising candidate in monitoring physiological processes.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuanyan Luo,Tao Zhou,Costas Molochas,Yongkang Tan,Xiaoting Huang,Zhenyu Chen,Jinliang Zhu,Panagiotis Tsiakaras,Peikang Shen
Pt-Pd-Ni polyhedral nanobelt (PNBs) composite catalysts are synthesized in presence of tungsten hexacarbonyl [W(CO) 6 ] by a simple solvothermal method, combining both higher specific surface area and more index active site than the corresponding single-structure catalysts. The thermal decomposition of W(CO) 6 plays a crucial role in the morphology formation. The tenuous composite with a moderate nanobelt width of 7.46 nm formed after heating for 6 h (Pt-Pd-Ni PNBs2) shows better ORR performance and durability than the ternary (Pt-Pd-Ni) and binary (Pt-Pd) single structures. It exhibits a mass activity of 1.49 (A mg Pt −1 ), which only degrades by about 10.63 % after 50,000 durability cycles. The metal regulatory effects induced by the carbonyl compounds cause the contraction of the Pt-Pt bonds. Density functional theory calculations indicate that the compressive strain of Pt-Pd-Ni PNBs2 leads to a decrease in the d-band center and overpotential negatively shifted, thus provide a more sufficient and faster ORR proceeding process in thermodynamics, facilitating a higher energy conversion efficiency.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Lina Xiao,Qiuping Zhang,Xinzhi Wang,Honglei Shuai,Hui Lu,Xiaoyan Li,Xiaojian Yang,Hao Zhang
Recently, there has been significant interest in the investigation of high-efficiency photocatalysts utilizing metal–organic frameworks (MOFs). The combination of metal nanoparticles (MNPs) into MOFs to form composites, such as platinum NPs (PtNPs)/MOFs, has become a prevalent and widely employed method in the field of photocatalysis. In this investigation, a simple method was employed to distribute PtNPs uniformly across the surface of a self-sensitized palladium porphyrin MOF (PCN-222(Pd)). When subjected to irradiation by visible light, the hybrid material 3%Pt/PCN-222(Pd) demonstrated a notably effective rate of 3932 μmol g -1 h - 1 photocatalytic H 2 generation from the water, which is 2.2 times greater than a single PCN-222(Pd). This improvement may be related to the coordination of polyvinylpyrrolidone (PVP) between C=O and Zr 4+ , which enhances the interaction of PtNPs with PCN-222(Pd) nanorods. Consequently, the long-life electrons from Pd-metalized tetrakis(4-carboxyphenyl)porphyrin (PdTCPP) photosensitizers rapidly shift towards the electron capture site of PtNPs, significantly reducing the occurrence of recombination between photogenerated electron-hole pairs. The utilization of the synergistic effect of Pd-porphyrin photosensitizers and PtNPs co-catalyst in this technique efficiently enhances electron transport between Pd-porphyrin and PtNPs units, hence promoting the rate of H 2 evolution.
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ACS Applied Energy Materials
·
2024
·
IF 5.4
Yining Dong,He Li,Xuanhao Mei,Ce Han,Xue Gong,Ping Song,Weilin Xu
Traditional Pt/C is the most classic electrocatalyst for the oxygen reduction reaction (ORR) in fuel cells, in which the ORR mechanism is generally understood based on Pt nanoparticles alone. Here, based on the revealed fact of the inevitable coexistence of Pt nanoparticles and single atoms on such Pt/C, via density functional theoretical calculation, the pathways for the ORR process have been revealed: besides the known pathways on isolated Pt nanoparticles and single atoms, the other two pathways with enhanced ORR performance occur on neighboring Pt nanoparticles and single atoms due to their unique synergetic effects with the enhanced four-electron pathway by decreasing the H2O2 yield. Inspired by such insights, the mass ratio between Pt nanoparticles and single atoms was optimized to maximize their synergetic effect, which yielded an optimal hybrid Pt/C with Pt 8.0 wt % (5 wt % Pt SAs with 3 wt % Pt NPs). This mixture exhibited remarkable ORR performance on the same level as Pt/C with Pt 20 wt %, achieving a huge enhancement in Pt utilization. Such work deepens the understanding of the catalytic ORR mechanism of traditional Pt/C and can guide the design of Pt- or other precious-metal-based nanocatalysts with a high performance/price ratio for all kinds of energy processes.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2025
·
IF 3.8
Du Juan,Chen Jinwen,Tong Huixiao,Liao Shenghua
Fluorescent metal organic frameworks (FMOFs) constructed by encapsulating aggregation-induced emission luminogens (AIEgens) into frameworks have garnered increasing attention due to their ability to overcome the aggregation-caused quenching (ACQ) effect of traditional fluorescent materials such as organic dyes, quantum dots, and up-conversion nanoparticles. However, conventional AIEgens usually contain aromatic groups that may pose potential health risks. Additionally, the quality of bisphosphonates (BPs), first-line treatment drugs in skeletal-related diseases, is critical to assure their effectiveness and safety. In this work, a new nanocomposite, Pt NCs@ZIF-8, was designed by encapsulating platinum nanoclusters (Pt NCs) with aggregation-induced emission (AIE) properties into zeolitic imidazolate framework-8 (ZIF-8) through self-assembly between Zn 2+ and Pt NCs. Owing to the spatial confinement provided by ZIF-8 and the AIE effect of Pt NCs, the resulting Pt NCs@ZIF-8 nanocomposite presents excellent photostability and anti-photobleaching. Furthermore, the framework of Pt NCs@ZIF-8 collapses in the presence of BP drugs due to the strong coordination interaction between the P = O groups in BPs and the Zn 2+ in ZIF-8, leading to the release of Pt NCs. This release of Pt NCs causes effective fluorescence quenching of the Pt NCs@ZIF-8 nanocomposite, resulting from the increasing intramolecular motion of surface ligands, glutathione (GSH), on Pt NCs. Therefore, a new Pt NCs@ZIF-8-based nanoprobe has been rationally designed for BP detection. More importantly, our designed Pt NCs@ZIF-8-based nanoprobe also presents excellent discrimination capability toward four structurally similar BPs—Etidronate, Clodronate, Alendronate, and Risedronate, as confirmed by statistical techniques such as principal component analysis (PCA) and hierarchical clustering analysis (HCA). Finally, the proposed Pt NCs@ZIF-8 nanoprobe was successfully applied to quantify the labeled amount percentage of commercially available Sodium Risedronate and Sodium Alendronate tablets, achieving satisfactory limits of detection (LOD) spanning from 1.2 to 8.8 µM and excellent recovery ranging from 97.50% to 102.6%. This work not only provides a novel and convenient strategy for detecting and distinguishing BPs but also demonstrates the potential application of metal–organic frameworks encapsulating metal nanoclusters with AIE properties in pharmaceutical quality control. Graphical
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
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IF 4.6
Xin Zhao,Shibin Han,Cheng Chen,Xiaoyi Lv,Jiahe Li,Chen Chen
Celecoxib (CXB) is a non-steroidal anti-inflammatory drug used to prevent and treat arthritis. However, overdosing or improper use can cause adverse reactions. SERS is an important tool for therapeutic drug monitoring (TDM).The present study proposes an innovative detection scheme based on SERS deep learning, aiming to achieve qualitative identification and quantitative detection of CXB at the Raman spectrum level. In this paper, a composite SERS substrate consisting of silver (Ag)@ platinum (Pt)@ porous silicon Bragg mirror (PSB) was synthesized. Crystal violet (CV) was used as probe to characterize the substrate properties, and the substrate showed excellent SERS properties and long-term stability. The substrate significantly enhanced the SERS response capacity to CXB, showing excellent reproducibility and high sensitivity. The LOD and the recovery rate were both within the reasonable range when the substrate was used to detect CXB concentration in serum. Three deep learning models, GoogleNet, ResNet and VGG, were used to classify five kinds of blood drug concentrations. Among them, the GoogleNet model based on spectral dataset achieved the highest classification accuracy of 84.17 %. The deep learning-SERS integrated system supports blood drug concentration discrimination, helping doctors personalize treatment strategies for arthritis patients and improving clinical efficiency.
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Nano Energy
·
2025
·
IF 17.1
Ying Wang,Ruolan Zhao,Yachao Xu,Bojing Sun,Zhong Zhou,Peng Yu,Yue Qu,Youxing Liu
Solar driven the conversion of plastic waste, one of emerging environmental pollution sources, into clear energy and high value-added products, is of great significance for human health and sustainable economic development globally, however, still suffer from low reaction kinetics and unsatisfactory selectivity. Herein, we proposed a new strategy of zinc indium sulfide (ZIS) nanosheets anchoring Pt cluster (ZIS-Pt-Clu) for enhancing local surface plasmon resonance (LSPR), by accurately synthesizing S-Pt coordination bond for constructing electron transport channel, for the purpose of promoting the reaction kinetics and selectivity of plastic waste into hydrogen and high value-added products. Experiment shows that the as-made ZIS-Pt-Clu photocatalyst exhibits a high hydrogen production rate of 11.7 mmol h −1 g −1 , together with 97.5 % of selectivity of polylactic acid (PLA) to pyruvic acid (PA), which is the best compare with ZIS/Pt-Clu without hot electron transport channel and reported active materials. In addition, the S-Pt coordination bond also triggers strong interface crystal field between Pt cluster and ZIS to promote the separation and transport of photogenerated carriers, which accelerates the photocatalytic conversion of PLA into H 2 and PA. Overall, this work reportes a new strategy of LSPR enhanced photocatalytic performance, opening the door for the fundamental research of designing high performance photocatalyst for the degradation of plastic waste to the production of new energy and high value-added products.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jie Yan,Runcheng Liu,Jian Shi,Wen Yang,Shouzhen Jiang,Zihao Zhang,Mingshun Jiang
The high toxicity and bioaccumulation of heavy metal ion pollutants pose severe threats to the environment and public health. Tilted fiber Bragg grating-based surface plasmon resonance (TFBG-SPR) sensors have emerged as effective tools for heavy metal ion sensing owing to their portability and rapid response. These sensors typically feature a single plasmonic structure. And they are constrained by hardware restrictions and complex spectral analyses. Thus, these conventional designs render multicomponent detection and precise analysis challenging. To address these limitations, this study introduces a lightweight multichannel sensing platform based on a composite plasmonic TFBG structure. A two-dimensional metal–organic framework (2D MOF Cu-TCPP(Pt)) and silver nanoparticles (AgNPs) are integrated onto a gold (Au)-coated TFBG surface. This configuration enables strong coupling between the SPR and localized SPR (LSPR). Hence, the signal sensitivity is enhanced. The molecular sieve effect of the Cu-TCPP(Pt) improves the target analyte enrichment and suppresses the background interference, thereby ensuring a stable signal output. Additionally, a DNA aptamer conformational switching strategy ensures selective target analyte recognition. This platform integrates an AgNPs@Cu-TCPP(Pt)/Au/TFBG sensor, optical channel array, and real-time signal processing module and enables simultaneous detection of Pb 2+ , Cd 2+ , and Hg 2+ within 6 min, with detection limits of 0.007, 0.012, and 0.005 nM, respectively. The proposed sensor effectively mitigates background interference in complex matrices, demonstrating excellent linearity and recovery. Compared with conventional TFBG-based methods, this platform offers high sensitivity, short detection times, and enhanced robustness, and presents a novel solution for real-time multicomponent detection in complex matrices.
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Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 14
·3470-3483
·
IF 7.779
Xiao-Meng Liu,Zhe Li,Xin-Rui He,Rui-Ping Liu,Zhong-Ying Ma,Xin Qiao,Shu-Qing Wang,Jing-Yuan Xu
The combination of endocrine therapy and chemotherapy is an attractive approach for treating breast cancers. Aromatase inhibitors (AIs) are the first-line drugs for postmenopausal ER-positive breast cancer and adjuvant therapy drugs for early stages of breast cancer. In this paper, we employed the FDA-approved aromatase inhibitor aminoglutethimide (AG) to design and prepare a new class of multi-targeting Pt(IV) prodrugs (aminoplatins 1–3) by utilizing the targeting, estrogen-manipulating, and chemo-sensitizing effects of the aromatase inhibitor. Aminoplatin 3, as a representative, exhibited an enhanced anticancer activity up to 190-fold greater than the parent Pt(II) drug cisplatin, and 3 had less toxicity to normal cells, displaying higher anticancer efficacy and a superior therapeutic index compared to those of cisplatin. Moreover, aminoplatin 3 could enhance intracellular accumulation, induce remarkable DNA damage, inhibit migration and metastasis, and result in S phase cell cycle arrest and apoptosis in ER-positive MCF-7 cells. Besides, molecular docking results showed that 3 simultaneously occupies the heme iron-binding domain and the ASD-binding site of aromatase by a highly efficient dual-binding pattern to aromatase, which further displayed a striking anti-estrogenic effect by significant downregulation of CPY19A1 and ERα in ER-positive MCF-7 cells. Most strikingly, our in vivo anticancer evaluation data also provided evidence that 3 effectively inhibited tumor growth and attenuated kidney toxicity compared to cisplatin in MCF-7 xenografted BALB/c nude mice. Our results suggest that the anticancer activity of aminoplatins is mechanistically distinct from that of the conventional platinum drugs, and modifying platinum drugs with aromatase inhibitors may represent an improved modality for the treatment of advanced postmenopausal breast cancer.
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高影响因子
Small
·
2023
·Vol. 20
·期 20
·2307386
·
IF 13.3
Shiting Wu,Xiaohui Li,Jiaqi Liu,Hanfeng Wu,Hanshuai Xu,Wangfeng Bai,Liang Mao,Xiaowei Shi
Selective photocatalytic production of high-value acetaldehyde concurrently with H 2 from bioethanol is an appealing approach to meet the urgent environment and energy issues. However, the difficult ethanol dehydrogenation and insufficient active sites for proton reduction within the catalysts, and the long spatial distance between these two sites always restrict their catalytic activity. Here, guided by the strong metal-substrate interaction effect, an atomic-level catalyst design strategy to construct Pt-S 3 single atom on ZnIn 2 S 4 nanosheets (Pt SA -ZIS) is demonstrated. As active center with optimized H adsorption energy to facilitate H 2 evolution reaction, the unique Pt single atom also donates electrons to its neighboring S atoms with electron-enriched sites formed to activate the O─H bond in * CH 3 CHOH and promote the desorption of * CH 3 CHO. Thus, the synergy between Pt single atom and ZIS together will reduce the energy barrier for the ethanol oxidization to acetaldehyde, and also narrow the spatial distance for proton mass transfer. These features enable Pt SA -ZIS photocatalyst to produce acetaldehyde with a selectivity of ≈100%, which will spontaneously transform into 1,1-diethoxyethane via acetalization to avoid volatilization. Meanwhile, a remarkable H 2 evolution rate (184.4 µmol h −1 ) is achieved with a high apparent quantum efficiency of 10.50% at 400 nm.
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