Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 8
·4893-4902
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IF 10.7
Zhao Sun,Yunhan Gong,Dongfang Cheng,Zhiqiang Sun
Catalytic methane decomposition shows the prominent superiority of generating hydrogen in one step with almost no carbon oxide production; however, it suffers from catalyst deactivation and low by-product carbon quality. Herein, a series of H2-reduced NixCr2Ox+3 (abbreviated as reduced NixCr2) catalysts were designed and synthesised for highly efficient methane decomposition and carbon nanotube production. A maximum methane conversion of 87.1% and hydrogen concentration of 91.8 vol% were achieved at 750 °C without deactivation. The results from XPS, XAS, and Raman reveal that the reduced NixCr2 catalysts have significant activity and stability. On the one hand, they form the Cr–O–Ni structure, thus possessing strong Ni–Cr2O3 interaction. On the other hand, the lattice oxygen of the reduced NixCr2 catalysts induces methane activation, thus accelerating methane activation, as demonstrated by the generation of a little amount of CO. In addition, the relationship between the types of carbon deposited and Ni/Cr ratio, decomposition temperature, and time was also revealed to guide carbon nanotube synthesis. Density functional theory calculation confirms the lowest dehydrogenation barrier of Ni(111)/Cr2O3(012), demonstrating the superiority of the Cr–O–Ni catalyzed methane decomposition. These findings provide innovative ideas for the construction of functionalized materials, which will substantially promote the development of methane decomposition.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 9
·5773-5785
·
IF 3.5
Qu Ai,Shi-Kuan Sun,Peng-Wei Hao,Yuan-Bin Chen,Yi Zhao,Sheng-Heng Tan,Wei-Ming Guo,Hua-Tay Lin
The aqueous reprocessing of spent nuclear fuel generates a considerable amount of plutonium alongside contaminated stainless steel, necessitating meticulous handling for safe decommission and long-term management. The present work investigated the co-immobilization of CeO 2 (as an inactive surrogate for PuO 2 ) with metallic Fe and Cr (representing a simplified stainless steel) within a zirconolite ceramic wasteform, nominally targeting Ca 1− x Ce x ZrTi 2−2 x Fe x Cr x O 7 . After sintering at 1400°C under an air atmosphere, the zirconolite phase constituted 90.8–95.1 wt.% of the product across the solid solution range of 0.05 ≤ x ≤ 0.25, alongside perovskite and baddeleyite secondary phases in varying proportion; no evidence of the unincorporated CeO 2 or metallic and oxidized Fe or Cr were identified. Above x = 0.30 CeO 2 was detected inferring, the solubility limit was reached. A polytype transformation from zirconolite 2M to 3T was confirmed by X -ray diffraction and selected area electron diffraction results, with the relative fraction of the 3T phase gradually increasing to 49.5 wt.% at x = 0.30. Deconvolution of X-ray photoelectron spectroscopy data revealed the partial reduction of Ce 4+ –Ce 3+ , whereas Fe and Cr species maintained trivalent, in agreement with the targeted substitution scheme. Benefitting from the excellent chemical flexibility of zirconolite structured compounds, the co-immobilization approach may be an effective disposal pathway for Pu-containing wastes and contaminated stainless steel residues.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Jingjing Zhao,Danfeng Wang,Fengyin Zhou,Hongya Wang,Xin Qu,Yuqi Cai,Zhiyu Zheng,Dihua Wang,Huayi Yin
The recycling of spent lithium-ion batteries (LIBs) is pivotal for advancing industrial resource sustainability and economic viability. However, conventional recovery processes face significant challenges, including excessive energy consumption, reagent overuse, and inefficiencies in material separation. Herein, a slurry electrochemical assisted method is proposed for co-recycling spent LiCoO 2 (LCO) and LiFePO 4 (LFP) enabled by their redox reactions. The redox reaction of LCO and LFP allows the leaching efficiency of Li to reach 99.4 % and Co to achieve 98.1 % at the conditions of 1 mol L −1 H 2 SO 4 and under a constant cell voltage of 3 V. Over the process, the dissolved Fe 2+ from LFP in the beginning plays a critical reduction role in destructing the stable structure of LCO. And the additional applied electricity reinforces the circulate of proton, thus enhancing the utilization rate of acid close to ∼99 %. More importantly, over 90 % of Fe 3+ is directly precipitated to FePO 4 ·2H 2 O without the precipitant additive. What's more, the relatively high solid-liquid ratio of 132.5 g L −1 simplifies the separation step and reduces process energy consumption. This study optimizes metal recovery efficiency through advanced electrochemical assisted co-leach and selective separation strategies, aiming to reconcile industrial scalability with circular economy goals.
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OPTICS EXPRESS
·
2025
·Vol. 33
·期 10
·21619-21633
·
IF 3.3
Suwen Xiong,Dongping Zhou,Chang Min,Xuanchu Liu,Zitong Liu,Jian Kang,Jian Kang,Enjin Liu,Tianyuan Zhou,Tianyuan Zhou,Guiming Li,Yanbin Li,Wieslaw Strek,Hao Chen,Hao Chen,Hao Chen,Le Zhang,Le Zhang,Le Zhang
High-power phosphor-converted laser lighting and laser display have gained significant attention due to their superior energy efficiency and long lifespan. However, the elevated operating temperatures under high-power excitation induce severe thermal quenching of phosphor materials, compromising the thermal stability and emission performance. To address this issue, we proposed a multi-component co-doping strategy by incorporating Ba2+/Si4+ and Sr2+/Si4+ into Ce: YAG phosphor ceramics. The optimized Sr05Ba050 sample demonstrated exceptional thermal stability, retaining 96.56% of its emission intensity at 423 K. Moreover, the thermal saturation threshold increased to 73 W/mm2, significantly surpassing that of undoped Ce: YAG. This improvement is attributed to a combination of lattice stabilization and reduced electron-phonon coupling induced by the co-doping approach. Additionally, the optimized sample achieved a luminous efficiency of radiation (LER) of 248.82 lm/W and exhibited a lower surface temperature under high-power excitation. These findings highlight the effectiveness of Ba2+/Si4+ and Sr2+/Si4+ co-doping in mitigating thermal quenching and enhancing high-temperature performance, providing valuable insights for next-generation high-power lighting and display applications.
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Coatings
·
2025
·Vol. 15
·期 6
·630
·
IF 2.8
Zhaobin Lu,Baoxin Wang,Shengtao Li,Feiyan Pan,Xuewei Zhu,Xiaofeng Wei
In the “dual carbon” objective, the preparation of non-precious metal catalysts with low cost and high activity is essential for the study of hydrogen evolution reactions (HERs). This study employed biomass pomelo peel powder as the carbon source and ammonium metatungstate (AMT) as the tungsten source and, through a facile one-step method in molten salt, fabricated a biomass carbon-based nanocatalyst featuring carbon flakes adorned with tungsten carbide (WC) nanoparticles. Dicyandiamide and cysteine were introduced as nitrogen and sulfur sources, respectively, to explore the impacts of N-S elemental doping on the structure, composition, and HER performance of the WC/C catalyst. The experimental results showed that N-S doping changed the electronic structure of WC and increased the electrochemically active surface area, resulting in a significant increase in the HER activity of WC/C@N-S catalysts. The WC/C@N-S catalyst was evaluated with hydrogen evolution performance in a 0.5 mol/L H2SO4solution. When the cathodic current density reached 10 mA/cm2, the overpotential was 158 mV, and the Tafel slope was 68 mV/dec, underscoring its excellent HER performance. The outcomes offer novel insights into the high-value utilization of agricultural biomass resources, and pave the way for the development of cost-effective, innovative hydrogen evolution catalysts.
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Food Bioscience
·
2025
·
IF 5.9
Yuhan Yuan,Ruijuan Wang,Xuefeng Wu,Dongdong Mu,Li Guo,Xingjiang Li
Corn silk, an agricultural by-product rich in bioactive compounds, has long remained underutilized. In this study, we systematically examined how probiotic co-fermentation influences the bioactivity, flavor profile, and metabolic landscape of corn silk. The results demonstrated that fermentation significantly enhanced the total phenolic content by 73.31 % and flavonoid content by 80.20 %, along with a substantial improvement in antioxidant capacity. Volatile compound analysis identified 36 key aroma-related substances. Notably, 4-methylguaiacol and 4-ethylguaiacol contributed to both improved flavor and antioxidant function, highlighting a synergistic relationship between sensory quality and bioactivity during fermentation. Non-targeted metabolomics further revealed substantial changes in the metabolic profile post-fermentation, with 110 differential metabolites identified—75 upregulated and 35 downregulated. These metabolites were primarily enriched in the TCA cycle, phenylpropanoid biosynthesis, and amino acid metabolism pathways. Together, these findings uncover the molecular mechanisms by which probiotic fermentation remodels metabolic networks to enhance both the functional and sensory attributes of corn silk. This work offers a theoretical foundation and technical guidance for the high-value utilization of agricultural by-products and the development of functional foods.
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Biomaterials Science
·
2022
·Vol. 10
·期 5
·1292-1303
·
IF 7.59
Zian Wang,Xuan Wang,Hua Yu,Meiwan Chen
Camptothecin (CPT) is a potent broad-spectrum antitumor agent with efficient therapeutic effect for various cancers. However, its application in glioma therapy has been impeded by the tumor immunosuppressive environment and blood–brain barrier (BBB)-associated drug delivery challenges. Herein, neurotransmitter analogs-modified liposomes (NTs-LIP) were prepared by doping lipidized tryptamine (Tryp) to co-deliver CPT and curcumin (CUR) for improved chemo-immunotherapy in glioma. The introduction of Tryp promotes the delivery efficiency of CPT and CUR across the BBB. CPT inhibits cell proliferation after cellular uptake of NTs-LIP, the combination of which with CUR downregulates the elevated expression of the programmed cell death 1 ligand 1 (PD-L1) caused by CPT to prevent the inactivation of T-cells and synergistically enhance chemo-immunotherapy efficacy. Furthermore, both Tryp and CUR interfere with the indoleamine 2,3-dioxygenase (IDO) pathway to reduce regulatory T cell (Treg)-mediated immunosuppression, exhibiting the potential to combine with PD-L1 inhibition for synergistic antitumor immunity. Taken together, this platform contributes towards targeted delivery and alleviation of the immunosuppressive environment in glioma therapy.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Lingfei Li,Haishan Liu,Chenhui Xu,Jinghong Chen,Shuqi Deng,Zewen Zhuang,Kaian Sun,Kaili Wang,Wei Yan,Jiujun Zhang
Ruthenium (Ru), with a hydrogen binding energy comparable to platinum (Pt) and stronger oxygen affinity, is a promising platform for designing hydrogen oxidation reaction (HOR) catalysts. Nevertheless, the practical application of Ru-based catalysts is still hampered by limited intrinsic activity and poor CO tolerance. In this work, a RuIr alloy supported on titanium oxide (RuIr/TiO) is obtained as an efficient and durable catalyst for alkaline HOR. The mass activity of RuIr/TiO reaches to 10.36 A mg −1 PGM at the overpotential of 50 mV, which is 4.84 times higher than that of commercial Pt/C. Under 1000 ppm CO/H 2 , RuIr/TiO shows only a 6.85 % drop in current density after a long-time electrolysis, outperforming commercial Pt/C (27.84 %). Experimental characterizations and density functional theory (DFT) calculations reveal that alloying and strong metal-support interaction can induce interfacial charge redistribution and modulate the electronic structure of the active Ru site, thereby accelerate the reaction kinetics of alkaline HOR, optimize H adsorption, and enhance OH binding, leading to the promoted oxidation of CO on the catalyst surface.
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ChemSusChem
·
2025
·
IF 6.6
Jiawei Zhan,Qinyi Zhang,Huazhong Wang,Shuyu Zhang,Minglin Zhang,Ying Zhang,Tingna Fan,Pengyun Zhang,Huizhen Ke
The interfacial properties of the hole transport layer (HTL) are absolutely critical for perovskite solar cells (PSCs) nowadays. [4-(3,6-Dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) is widely used HTL within the class of self-assembled materials. However, during its self-assembly process, Me-4PACz tends to form molecular clusters and micelles on indium tin oxide (ITO), leading to insufficient coverage. Therefore, we propose a co-assembled monolayer (Co-SAM) strategy via co-depositing phenylphosphonic acid (PPA) or its derivatives as co-dopants with Me-4PACz, the intermolecular steric hindrance between phenyl and carbazole groups effectively suppresses Me-4PACz aggregation. Simultaneously, the phosphonic acid groups of both molecules form a synergistic dual-anchoring effect, significantly enhancing HTL uniformity and coverage. Furthermore, active substituents (-OH, -NH 2 , -Br) in the dopants can passivate uncoordinated Pb 2+ ions and iodine vacancies at the perovskite interface, thereby optimizing the HTL/perovskite contact and improving carrier extraction ability. Results show that inverted devices based on Me-4PACz+BrPPA Co-SAM achieve a power conversion efficiency (PCE) of 23.73%, representing a substantial increase from 21.39% while maintaining excellent stability. This strategy provides a new direction for developing high-performance Co-SAM and advancing the industrialization of PSCs. Graphical In this contribution, a novel Co-SAM strategy is employed by introducing phenylphosphonic acid and its derivatives into Me-4PACz solution to suppress its molecular clustering, thereby optimizing the FAPbI 3 perovskite layer. The resulting device achieve a PCE of 23.73% and demonstrate exceptional long-term stability.
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ACS Catalysis
·
2025
·
IF 13.1
Zhuo Li,Huimin Yang,Rui Gao,Peng He,Xingchen Liu,Ruilin Liu,Xiaomin Dai,Yunhua Xu,Yong Qin,Bin Zhang
The hydroformylation of high-carbon α-olefins is a pivotal industrial process. Still, heterogeneous Co-based catalysts suffer from low activity and Co leaching due to strong coordination of CO to Co atoms. Herein, we address the dynamic evolution and active structure of Co species by interacting Co nanoparticles or ultrahigh-dispersed clusters with β-Mo2C nanoparticles (Co-30Mo2Cparticle/CNF) and nanofilms (Co-100Mo2Cfilm/CNF) on carbon nanofibers. The specific activity in the formation of heptanal from 1-hexene hydroformylation increased by 10.7 times on Co-30Mo2Cparticle/CNF (21.4 molheptanal/molCo/h) and 2.4 times on Co-100Mo2Cfilm/CNF (4.7 molheptanal/molCo/h) compared with Co/CNF (2.0 molheptanal/molCo/h). Moreover, Co-100Mo2Cfilm/CNF exhibits enhanced stability with only 1.7% Co leaching. The Mo2C nanoparticles interact with Co nanoparticles, oxidizing them to form highly active Co-MoOx sites with a lower CO insertion barrier. The reaction environment influences the structural evolution of the Co-MoOx interaction. In contrast, Mo2C nanofilms form robust Co–C and Co–Mo bonds at the Co–Mo2C interface, stabilizing atomically distributed Co clusters against leaching. This work establishes a morphology-driven strategy to control the dynamic interaction of Co and additives, thereby decoupling activity and stability in heterogeneous catalysis for hydroformylation.
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Laser & Photonics Reviews
·
2025
·
IF 10
Ziyi Niu,Pengfei Zhang,Wenbo Chen,Junyang Xia,Zhili Zhang,Jinwei Liu,Yanyan Li,Bitao Liu,Lei Zhao
Near-infrared (NIR) mechanoluminescence (ML) holds significant promise for in vivo biomechanical detection and imaging due to its self-powered excitation and self-recovery capabilities. However, its broader application remains constrained by the limited availability of suitable ML materials and the narrow spectral range of NIR emission. In this study, we report the Y 3 Ga 5 O 12 (YGO): Cr 3+ , Nd 3+ , Yb 3+ /polydimethylsiloxane (PDMS) NIR-ML composite with broadband NIR emission tunable from 600 to 1100 nm, covering both the NIR-I and NIR-II windows. The ML of composite device is driven by an interfacial triboelectric effect arising from the mechanical interaction between the inorganic particles and the polymer matrix. Comparative studies on photon penetration through biological tissues reveal that co-doping with Nd 3+ and Yb 3+ markedly enhances tissue penetration depth. Specifically, the luminescence decay rate in biological tissues is reduced by 20.8% relative to Cr 3+ single doping, indicating improved optical persistence and signal transmission. These findings demonstrate the potential of full-spectrum NIR-ML devices for high-resolution, deep-tissue biomechanical sensing and imaging. This work provides a generalizable design strategy for the development of broadband NIR-ML materials tailored for in vivo mechanical diagnostics.
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Advanced Science
·
2025
·
IF 14.1
Jiaxin Yin,Shengcai Yang,Zengguang Liu,Songchen Zhao,Siyu Sun,Ziling Liu,Quanshun Li
The metabolic reprogramming of immunosuppressive tumor microenvironment (ITME) greatly influences the anti-tumor immunity. Bioinformatic analysis demonstrates that indoleamine 2,3-dioxygenase 1 and 3-hydroxy-3-methylglutaryl coenzyme A reductase (key enzymes of kynurenine (Kyn) and cholesterol metabolism, respectively), are overexpressed in human colon adenocarcinoma tissues. Herein, biomimetic and pH/ROS dual-responsive nanoparticles (PTSK@CRM) loaded with simvastatin and kynureninase (KYNase) are prepared to regulate Kyn and cholesterol metabolism, thereby enhancing the immunotherapeutic efficacy of PD-1 antibody (αPD-1). The monodisperse spherical PTSK@CRM is stable at pH 7.4, while it can release simvastatin and KYNase under low pH and high H 2 O 2 concentration. PTSK@CRM achieves excellently homologous tumor targeting to CT26 cells and induces cell apoptosis more effectively than PTSK. Moreover, PTSK@CRM significantly reduces the contents of Kyn and cholesterol and decreases the activation of the Kyn-AhR pathway in tumor metabolism. In vivo experiments show that PTSK@CRM possesses a favorable tumor-targeting ability to effectively suppress tumor growth and increase the infiltration of immune cells, including CD8 + T cells, CD4 + T cells, M1-like macrophages, and mature dendritic cells. Further, PTSK@CRM reduces the infiltration of immunosuppressive cells, thereby reversing ITME to improve the therapeutic efficacy of αPD-1. Overall, this immune-metabolic therapeutic strategy provides a potential route for remodeling ITME to enhance tumor immunotherapy.
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