Journal of Materiomics
·
2024
·
IF 8.4
Xin Zhou,Chenbin Ai,Xiaojing Wang,Zhen Wu,Jianjun Zhang
Pure ZnO exhibits low photocatalytic H 2 O 2 production activity due to the rapid charge recombination. To realize the spatial separation of photogenerated electrons and holes, constructing an electron transfer channel on the ZnO surface is an effective approach. This study successfully modified the surface of ZnO using F – (ZnO/F) by introducing NH 4 F in an aqueous phase photocatalytic system. The F – is adsorbed on the ZnO surface by Coulombic force and significantly improves the photocatalytic H 2 O 2 production performance of ZnO, with the highest efficiency of 4137.2 μmol·g –1 ·L –1 ·h –-1 . The photocatalytic performance enhancement mechanism of ZnO/F is explained in terms of electron transfer dynamics by femtosecond transient absorption spectroscopy (fs-TAS) measurements. F – surface modification constructs a new ultrafast electron transport pathway from the ZnO CB to F – , and the optimal ZnO/F exhibits the fastest interfacial electron transfer lifetime of 5.8 ps. The F – surface modification effectively facilitates the charge separation, thereby increasing the number of electrons available for photocatalytic H 2 O 2 reaction. This study has revealed the roles of F – surface modification in the photocatalytic H 2 O 2 production by ZnO and provides guidance for ionic modification to improve photocatalytic performance.
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高影响因子
ACS Biomaterials Science & Engineering
·
2024
·
IF 5.4
Rui Zhao,Xiangjian Liu,Marlene Davis Ekpo,Yongju He,Songwen Tan
Cryopreservation of red blood cells (RBCs) plays an indispensable role in modern clinical transfusion therapy. Researchers are dedicated to finding cryoprotectants (CPAs) with high efficiency and low toxicity to prevent RBCs from cryopreservation injury. This study presents, for the first time, the feasibility and underlying mechanisms of a novel CPA called tris(hydroxymethyl)aminomethane-3-propanesulfonic acid (TAPS) in RBCs cryopreservation. The results demonstrated that the addition of TAPS achieved a post-thaw recovery of RBCs at 79.12 ± 0.67%, accompanied by excellent biocompatibility (above 97%). Subsequently, the mechanism for preventing RBCs from cryopreservation injury was elucidated. On one hand, TAPS exhibits a significant amount of bound water and effectively inhibits ice recrystallization, thereby reducing mechanical damage. On the other hand, TAPS demonstrates high capacity to scavenge reactive oxygen species and strong endogenous antioxidant enzyme activity, providing effective protection against oxidative damage. Above all, TAPS can be readily removed through direct washing, and the RBCs after washing showed no significant differences in various physiological parameters (SEM, RBC hemolysis, ESR, ATPase activity, and Hb content) compared to fresh RBCs. Finally, the presented mathematical modeling analysis indicates the good benefits of TAPS. In summary, TAPS holds potential for both research and practical in the field of cryobiology, offering innovative insights for the improvement of RBCs cryopreservation in transfusion medicine.
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PubMed
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Zongbin Liu,Xiaojiao Yu,Kai Wang,Yuchen Wei,Jian Zhang,Jinfen Niu
Photocatalytic technology has received a great deal of attention due to its high efficiency and environmentally friendly properties in the treatment of wastewater. MXene, a rapidly expanding family of two-dimensional materials, is widely used in various fields due to its unique layered structure, large specific surface area, excellent hydrophilicity and strong electrochemical performance. In this paper, a simple hydrothermal method has been used to synthesize Cu 2 O-MXene(Ti 3 C 2 ) photocatalysts. The successful introduction of Ti 3 C 2 MXene reduced the surface transfer resistance to promote electron transfer, effectively inhibited electron-hole complexation and increased the specific surface area of the catalyst. The prepared samples have excellent photocatalytic properties due to the above-mentioned advantages. Efficient degradation of antibiotics was achieved with the maximum degradation rate of sulfamethazine (SM2) by M 2 -Cu 2 O reaching 85.7 % in 160 min. It was experimentally confirmed that • O 2 ‐ and h + played the major roles in the degradation process, and possible degradation pathways and photocatalytic mechanisms were proposed in conjunction with HPLC-MS/MS. Finally, the intermediate products were tested for their biotoxicity. This work provides a strategy for the construction of highly catalytically active Cu 2 O-based catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yong Pan,Jicheng Han,Guannan Wang,Tianyuan Zhong,Siyang Liu,Yanxin Qi,Yubin Huang
As a promising class of vaccines, the primary challenge in subunit vaccines development is effectively inducing robust cellular immune responses against pathogens. Existing adjuvants and delivery systems, whether clinically approved or under development, continue to face significant limitations. Herein, we prepared nanovaccines by binding antigens to aluminum-based metal–organic frameworks (MOFs) via responsive linkers and incorporating CpG oligodeoxynucleotides. Within nanovaccines, the granulation and stimuli-responsive release of soluble antigens optimizes antigen utilization. The presence of aluminum ions and organic ligands within the carriers, in conjunction with adsorbed CpG adjuvants, synergistically enhances immune responses. Notably, the inherent properties of the MOFs carriers allow for prolonged retention of nanovaccines at the injection site post-vaccination, enabling sustained antigen stimulation conducive to establishing enduring immune memory. Furthermore, the carriers demonstrate broad adaptability across various antigens, displaying their universal adaptability. Overall, this work offers a promising vaccine preparation method characterized by safety, efficacy, simplicity, and potential for clinical translation.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Tiantian Qu,Xinran Duan,Zhuowei Ma,Fusheng Liu,Jingjing Ma,Kunqi Gao,Mengshuai Liu
Several phenylpyridine- and phenyl-based hypercrosslinked polymers (HCPs) were prepared via a one-step Friedel-Crafts polymerization and used as catalysts for the cycloaddition reaction between atmospheric CO 2 and epoxides to produce cyclic carbonates. The structural characteristics and catalytic activity of different HCP catalysts were compared, while the recycling performance and universality to various substituted epoxides were investigated. The as-prepared catalysts exhibited regular pore structure and high specific surface area (1133 m 2 /g). Under the synergistic effect of tetrabutylammonium iodide (TBAI), the optimized TPA-HCP-Py efficiently converted atmospheric CO 2 into cyclic carbonates with good to excellent product yields. Furthermore, the TPA-HCP-Py catalyst was easy to recover, and no significant changes were observed after reusing for five times, which demonstrated its excellent recycling performance. The interactions between different active sites and reactants in the TPA-HCP-Py/TBAI catalytic system were investigated by DFT calculation, revealing the catalytic reaction mechanism and providing valuable guidance for developing new multifunctional catalysts.
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BIOCHEMICAL GENETICS
·
2024
·
IF 2.1
Wang Song,Bao Ning,Li Mohan,Liu Dongwei,Tao Liming
Proliferative diabetic retinopathy (PDR), the most common type of diabetic retinopathy, is a main cause of visual and impairment blindness. Abnormal neovascularization, endothelial dysfunction, and vascular inflammation are important mechanisms for the development of PDR. Ets2 regulates angiogenesis-related genes and inflammation, however, the effect of Ets2 in PDR procession has not been clarified. Thus, this study is performed to investigate whether Ets2 exerts key functions in PDR. In this study, 10-week-old mice were used for establishing STZ-induced diabetic mice, and Ets2 expression was analyzed in retina tissues. Besides, newborn mice were applied to construct oxygen-induced retinopathy (OIR) models. The Ets2 expression, oxidative stress, and inflammation were detected in retina tissues. We found that Ets2 was highly expressed in retina tissues both in diabetic mice and OIR mice. Oxidative stress and inflammatory processes are two factors contributing to the pathogenesis of PDR. In retinal tissues of OIR mice, Ets2 knockdown inhibited expression of inflammatory mediators VEGFA, IL-6, and IL-8, and biomarkers of oxidative stress MCP-1, VCAM-1, and iNOS. ROS production was also inhibited by silencing Ets2. Ets2 deficiency inhibited endothelial cell proliferation in the retina. Furthermore, Ets2 knockdown contributed to suppressing the expression of angiogenesis-related genes VEGFA, JUNB, MMP-9, Tie2, Ang-2, and EphB4. Our study highlights that Ets2 accelerates PDR procession by promoting the proliferation of endothelial cells, oxidative stress, and inflammation, which provides a novel target against PDR.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Yanmin Shen,Shuting Pan,Yuqi Gao,Jing Wang,Ruyue He,Wanying Wu,Guanghui Wu,Jinbing Zhang,Caihua Yu,Yuxin Wang,Han Wang,Wenju Liu
The mole fraction solubility of loxoprofen was investigated by the gravimetric static method in 14 monosolvents of methanol, ethanol, n-propanol, iso-propanol, methyl acetate, ethyl acetate, n-propyl acetate, iso-propyl acetate, iso-amyl acetate, iso-butyl acetate, butyl acetate, ethyl orthosilicate, acetonitrile, and 1,4-dioxane in the temperature range of 283.15–328.15 K under 0.1 MPa. Experiment results demonstrated that loxoprofen solubility increased positively with increasing temperature. Among 14 monosolvents, the mole fraction solubility of loxoprofen at 298.15 K followed this order: 1,4-dioxane (0.2143) > methanol (0.1185) > iso-propanol (0.09662) ≈ ethanol (0.09431) > n-propanol (0.09045) > methyl acetate (0.08949) > ethyl acetate (0.08475) > n-propyl acetate (0.06314) > iso-propyl acetate (0.0560) > butyl acetate (0.05270) > iso-butyl acetate (0.0451) ≈ iso-amyl acetate (0.04484) > acetonitrile (0.04193) > ethyl orthosilicate (0.03648). The four usually thermodynamic models including the modified Apelblat model, the Yaws model, the Van’t Hoff model, and the λh model were applied to correlate solubility data, and the Yaws model obtained a relatively accurate correlation result by values of RAD and RMSD. Hansen solubility parameters of solvents were quoted to explain the dissolving behavior of loxoprofen in 14 monosolvents.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Qingkun Kong,Shuchao Jiang,Zhongyi Wang,Xin Xu,Ruiling Zhang,Guoqing Zhu,Junxia Yang,Peigeng Han,Runze Liu,Feng Hong,Nengchao Luo,Junsheng Chen,Bin Yang
Metal halide perovskite materials with excellent carrier transport properties have been regarded as a new class of catalysts with great application potential. However, their development is hampered by their instability in polar solvents and high temperatures. Herein, we report a solution-processed Cs2MoCl6 perovskite nanocrystals (NCs) capped with the Mo6+, showing high thermostability in polar solvents. Furthermore, the Pd single atoms (PdSA) can be anchored on the surface of Cs2MoCl6 NCs through the unique coordination structure of Pd–Cl sites, which exhibit excellent semihydrogenation of different alkyne derivatives with high selectivity at full conversion at room temperature. Moreover, the activity could be improved greatly under Xe lamp irradiation. Detailed experimental characterization and DFT calculations indicate the improved activity under light illumination is due to the synergistic effect of photo-to-heat conversion and photoinduced electron transfer from Cs2MoCl6 to PdSA, which facilitates the activation of the C≡C group. This work not only provides a new catalyst for high selective semihydrogenation of alkyne derivatives but also opens a new avenue for metal halides as photothermal catalysts.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ruoyu Liu,Chang Deng,Penghui Liu,Hui Liu,Yan Huang,Linlin Chen,Yanhong Chao,Peiwen Wu,Wenshuai Zhu
In this work, we reported the synthesis of a high-entropy metal oxide catalyst, HEO-M−900, with a focus on its exceptional performance in the catalytic adsorptive coupled with oxidative desulfurization (ACODS) of fuel oils. The HEO-M−900 catalyst, composed of Mo, Ni, Co, Fe, V, and O, exhibits an optimized high-entropy structure as well as numerous defects, as confirmed by a series of characterizations. The electron transfer between metals in the HEO-M−900 enhances the adsorption of aromatic sulfides and the activation of O 2 , resulting in superior catalytic efficiency. Mo becomes more electron-rich, effectively activating O 2 to generate reactive superoxide radicals (·O 2 – ), while Ni, Co, and V, which lose electrons, improve sulfide adsorption. Notably, the incorporation of magnetic elements (Fe, Co, and Ni) in HEO-M−900 enables efficient magnetic separation and recovery of the catalyst, as demonstrated by vibrating sample magnetometer (VSM) measurements. The HEO-M−900 catalyst achieved 100% desulfurization in model oils within 8 h at 120 °C, with resistance to olefin and aromatic interference. Recyclability tests, which can be realized by magnetic separation, showed that HEO-M−900 retained over 96.4% activity after 14 cycles, maintaining structural stability despite minor accumulation of DBTO 2 on the surface. The synergistic effect of enhanced adsorption, improved catalytic oxidation, and magnetic recoverability makes HEO-M−900 a promising candidate for practical ACODS applications.
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高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 18
·185502
·
IF 3.953
Jiatong Ni,Lixiang Kong,Minglu Tang,Yan Song,Junge Zhao,Wenxin Wang,Tiedong Sun,Ying Wang,Lei Wang
The concentration of intracellular zinc ions is a significant clinical parameter for diagnosis. However, it is still a challenge for direct visual detection of zinc ions in cells at single-cell level. To address this issue, herein, water-soluble amino-rich polydopamine carbon quantum dots (PDA-CQDs) were successfully synthesized, with strong blue-green fluorescence as the probes for zinc ions detection in cells. The structure and properties of PDA-CQDs were confirmed by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transformed infrared (FT-IR), UV–visible spectrophotometry (UV–vis), and fluorescence spectroscopy. Importantly, by successfully linking salicylaldehyde (SA) to PDA-CQDs via nucleophilic reaction, the FL quenching and Zn ions induced FL-recovering system was built up, thus offering a signal-on platform for the detection of zinc ions. This PDA-CQDs-SA nanoprobe can be applied for the detection of Zn2+ with a detection limit of 0.09 μM, with good biocompatibility confirmed using cytotoxicity assay. Of significance, the results of fluorescence bioimaging showed that PDA-CQDs-SA is able to detect Zn2+ in single-cell visually, with the detection limit of Zn ions in cells as low as 0.11 μM per cell, which was confirmed using flow cytometry. Therefore, this work offers a potential probe for Zn2+ detection in cells at single-cell level, towards the precise diagnosis of zinc ions related diseases.
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ULTRASONICS SONOCHEMISTRY
·
2017
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IF 4.218
Wenfei Cai,Ting Hu,Amr M. Bakry,Zhaomin Zheng,Yidong Xiao,Qilin Huang
The differences between ultrasonic and non-ultrasonic approaches in synthesizing Lignosus rhinocerotis polysaccharide-selenium nanoparticles (LRP-SeNPs) were compared in terms of size, morphology, stability and antioxidant activity by UV-VIS, FT-IR, X-ray diffraction (XRD), dynamic light scattering (DLS), transmission electron microscopy (TEM), and energy dispersive X-ray (EDX) with high resolution TEM. Results indicated that the SeNPs were associated with the LRP macromolecules in a physical adsorption pattern without breaking chemical bonds, and the ultrasonic treatment reduced the size of SeNPs, narrowed the size distribution as well as improved the stability. Due to the LRP compact coil structure loosed under ultrasonic cavitation, the SeNPs could be easily diffused into the LRP internal branches instead of gathering on the LRP surface and were well dispersed and eventually stabilized throughout the extended branches. After ultrasound treatment, the SeNPs had a minimum average diameter of ∼50 nm and the LRP-SeNPs could remain homogeneous and translucent for 16 days within 200 nm size. Furthermore, the ultrasound-treated LRP-SeNPs exhibited higher DPPH and ABTS radical-scavenging abilities than those untreated with ultrasound. This difference may be attributed to the reason that ultrasound can reduce the SeNPs size and increase the specific surface area, which provides sufficient active sites to react with the free radicals and suppress the oxidizing reactions. The integrated results demonstrated that ultrasound played a crucial role in the dispersion, size control, stabilization and antioxidant activity of SeNPs.
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高影响因子
FUEL
·
2023
·
IF 7.4
Peng Wang,Huafei Liao,Meng Yang,Lizhi Wu,Yu Tang,Li Tan
The deactivation of Pt-based catalysts is the most critical problem in nonoxidative propane dehydrogenation reaction (PDH), usually manifested in carbon deposition and active site sintering. Zn, as another cheap metal with more abundant reserves than Sn, is also widely used as an assistant in Pt-based catalysts. However, both of them are easy to be reduced to metal valence state and lost in the reaction process. Herein, the enlarged quantities of Zn are applied in the bimetallic Pt-Zn catalyst preparation. As confirmed by the increased reduction temperature of oxidized Zn species, it effectively minimizes the influence of the active metal mobility caused by Zn loss. At the same time, the constructed bimetallic structure modulates the surface acidity of Zn species and presents benign propylene desorption ability, thus the formed highly dispersed Pt sites on the surface of Pt 1 Zn 1 alloy are well-matched with its high propylene selectivity (∼98.6%). In addition, the rich-Zn Pt 1 Zn 1 sites are beneficial for enhancing the capability of resisting-coke, thus retarding the deactivation of this catalyst.
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