AICHE JOURNAL
·
2025
·
IF 4
Jiamei Wei,Peng Gao,Shen Wang,Yue Ma,Dong Cao,Daojian Cheng
Metal-support interaction (MSI) is of great significance for designing the supported metal catalysts with high catalytic activity and selectivity. In this work, the MSI between Co and the carbon layer in armored cobalt nanoparticle catalysts (Co@xC) is effectively regulated based on the channel confinement strategy. Notably, a direct volcanic relationship could be obtained between the MSI strength of catalysts and the reaction rate constant. The Co@2.5C catalyst with suitable MSI strength achieves complete 1-hexene conversion (100%) and the yield of heptanal is 17,161 mol kg Co −1 h −1 during the 1-hexene hydroformylation reaction. Further in situ / ex situ characterizations combined with theoretical calculations confirm the appropriate MSI accelerates the electron transfer from the carbon atom to the Co site, thereby enhancing the adsorption of 1-hexene species and boosting the reaction kinetics (the first-order reaction rate constant is 0.017 min −1 ). The volcanic structure-activity relationship in this work exhibits guiding significance for the development of industrial catalysts.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hao Zhang,Guangyuan Chen,Miaomiao He,Kui Tang,Haoyuan Li,Xuanhao Liang,Yanhao Song,Chuan Tan,Ling Zhang,Tao Duan,Lin Zhu
Efficiently removing both CH 3 I and I 2 from radioactive exhaust streams remains a challeng. In this study, we successfully synthesized a bismuth-based organic ionic polymers (Bi@OIP) embedded with palladium, designed for the co-adsorption of CH 3 I and I 2 . The Bi@OIP material demonstrates high uptake capacities of 2257.7 mg g −1 for iodine vapor and 390.0 mg g −1 for methyl iodide. Palladium embedded within the polymer matrix catalyzes the reaction between CH 3 I and Bi, leading to the formation of BiI 3 , thus overcoming the inertness of traditional bismuth-based adsorbents toward methyl iodide. This bismuth-palladium synergistic effect significantly enhances the co-removal capabilities for both iodine and methyl iodide, positioning Bi@OIP as a promising candidate for the efficient capture of radioiodine and methyl iodide from exhaust gases.
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高影响因子
BIOMASS & BIOENERGY
·
2025
·
IF 5.8
Lanjun Liu,Changqing Cao,Yuhan Du,Naveed Ramzan,Peigao Duan
This study investigated co-gasification of municipal sludge (MS) and black liquor (BL) in supercritical water for hydrogen production and pollution handling. The influence of the blending ratio (0–100 %), alkali content of BL (10 %, 20 %), reaction time (5–40 min), reaction temperature (400–600 °C) and total concentration (5-20 wt%) was investigated through thermodynamic analysis and experimental study. Thermodynamic modelling showed that MS addition increased the hydrogen fraction, but reduced the yield of other gas components. A synergistic enhancement was observed in MS/BL co-gasification, and the gasification efficiency had the highest improvement with MS/BL ratio of 40:60. Co-gasification also reduced N-containing compounds and alkylphenols in the liquid residue but increased phenol content. Increasing the alkali content of BL to 20 % boosted the synergistic effect, and shifted the optimal ratio to 50:50. The extension of reaction time from 5 to 20 min improved the gasification efficiency and hydrogen production, but further extension beyond 20min showed little impact. Increasing temperature favored the gasification, and the highest gasification efficiency (118.57 %), hydrogen yield (18.73 mol/kg) and COD removal rate (97.97 %) were obtained at 600 °C. These parameters showed different impact on the cold gas efficiency, H 2 selectivity and heating value of the gas product, where temperature exhibited highest influence.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mengcheng Tang,Lingfeng Pan,Hairui Deng,Xianan Li,Weili Yang,Jian Ge,Han Zhang,Yao Li,Ruibo Zhao,Shibo Wang,Xiangdong Kong
Photothermal therapy (PTT) based on a second near-infrared (NIR-II, 1000–1700 nm) light source holds great promise in the field of tumor treatment. However, hyperthermia-induced heat shock protein (HSP) expression and limited therapeutic efficacy remain the major challenges for PTT. Herein, a NIR-II laser-responsive nanocapsule PC/AC@GR@HA (abbreviated as P/A@G@H) was designed for carbon oxide (CO)-assisted tumor PTT combined with thermodynamic therapy (TDT). P/A@G@H was constructed by loading the CO storage polymer mPEG(CO) (PC) along with the free radical initiator 4,4′-azobis(4-cyanovaleric acid) (AC) into a gold hollow nanorod (GR), followed by the surface coating of hyaluronic acid (HA). After accumulating in tumor tissue through the active targeting of HA, P/A@G@H can quickly cause local hyperthermia upon 1064 nm laser irradiation and lead to cell damage by GR-mediated PTT. Moreover, the loaded PC can react with in situ H2O2 to produce CO, which inhibits the PTT-induced HSP90 expression. This can effectively weaken the heat resistance of tumor cells and enhance the PTT effect. Additionally, as a thermally decomposable radical initiator, AC can turn to toxic free radicals to ablate tumor cells via TDT under hyperthermia. Our research demonstrates that the synergistic strategy combining CO-assistance and TDT can effectively augment the ultimate therapeutic outcome of PTT, and the integrated nanocapsule P/A@G@H could be a powerful weapon for tumor suppression based on NIR-II light.
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DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2016
·Vol. 11
·期 1
·1-7
·
IF 2.584
Chen Zeng,Wei Chaochao,Li Shengjun,Diao Chunli,Li Wei,Kong Wenping,Zhang Zhenlong,Zhang Weifeng
SnO 2 nanosheet-structured films were prepared on a fluorine-doped tin oxide (FTO) substrate using ZnO nanosheet as template. The as-prepared SnO 2 nanosheets contained plenty of nano-voids and were generally vertical to the substrate. TiO 2 nanoparticles were homogeneously deposited into the intervals between the SnO 2 nanosheets to prepare a hierarchically structured SnO 2 /TiO 2 hybrid film. The hybrid films were co-sensitized with CdS and CdSe quantum dots. The sensitized solar cells assembled with the SnO 2 /TiO 2 hybrid film showed much higher photoelectricity conversion efficiency than the cells assembled with pure TiO 2 films. The lifetime of photoinduced electron was also investigated through electrochemical impedance spectroscopy, which showed that the SnO 2 /TiO 2 hybrid film electrode is as long as the TiO 2 film electrode.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
·
IF 9
Qian Xu,Yiyan Sun,Zhaoyang Tan,Weijuan Guo,Fujun Li,Xinran Hou,Yu Guo,Feichao Wu
Metal-organic framework (MOF) membranes, particularly cobalt-based gallate (Co-gallate) membranes, possess great potential for the efficient separation of ethylene/ethane (C 2 H 4 /C 2 H 6 ) mixtures due to their excellent sieving properties. However, the poor nucleation of MOF crystals on the substrate poses a challenge in the fabrication of high-quality Co-gallate membranes. In this work, we propose a facile and environmentally friendly approach to prepare continuous Co-gallate membranes at room temperature via magnetic field assistance. The external magnetic field, perpendicular to the substrate surface, promotes directional ion movement, improves the coordination ability of metal centers, and promotes deprotonation of ligands. These collectively facilitate the crystallization and growth of MOF crystals on the substrate by advancing MOF nucleation and enhancing nucleation density. The controllable growth of MOF membranes can also be achieved under the influence of magnetic field. The obtained Co-gallate membrane has a thickness of merely 400 nm, and exhibits superior performance in C 2 H 4 /C 2 H 6 separation. This work highlights the considerable potential of magnetic fields in the fabrication of various MOF membranes for diverse applications.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Yu Zhang,Yangang Sun,Luyao Pan,Zhaoxia Wen,Min Shi,Hao Li
Aiming at the bottleneck problems of limited visible light response range and high carrier recombination rate of Bi 2 O 2 CO 3 (BOC) photocatalyst, Ca 2+ /Ce 3+ co-doped Bi 2 O 2 CO 3 composite photocatalyst was constructed by hydrothermal method. The analysis of different characterization techniques shows that double doping can lead to lattice distortion and induce oxygen defects. Under visible light irradiation, the degradation efficiency of ciprofloxacin (CIP) and levofloxacin (LVX) by BOC-Ca-Ce4 reached 92.56 % and 90.39 %, respectively, and maintained a certain degradation efficiency in complex water bodies such as tap water and lake water. ESR and capture experiments confirmed that •O 2 − and h + were the dominant active species. Mechanism analysis showed that the valence cycle of Ce 3+ /Ce 4+ and the local electric field of Ca 2+ synergistically promoted the spatial separation of carriers. Through intermediate product analysis, CIP was finally mineralized to CO 2 /H 2 O, and the ECOSAR toxicity assessment showed that the ecological toxicity was reduced. This study provides a new design strategy for energy band engineering of two-component doped photocatalysts.
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PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Xiaodong Yang,Zhiyong Hou,Xuefei Yang,Minghui Li,Yuanxia Guo,Kai Wang,Shuaiqi Luo,Jin Zhao,Pengkai Sun,Qiang Yang,Rui Chen,Yan Yan,Lulu Liu,Lili Wang,Ye Han,Fanming Zeng,Andrew R. Zimmerman,Bin Gao
New efficient and sustainable methods for the removal of malachite green (MG) from environmental media are needed. In this study, corn straw was co-pyrolyzed with montmorillonite under a variety of conditions (400, 500, 600, and 700 °C and 10–40 wt% montmorillonite), without any use of toxic chemicals, to produce a series of biochar-clay composites. Characteristics of the composites that make them promising contaminant sorbents include a uniform lamellar-particle micromorphology, enhanced mesoporous structure and surface area (53.0 m 2 g −1 ), and abundant and diverse oxygen/carbon-containing functional groups (i.e., O-H, C-O, C=C, and C-H). The composite produced at 600 °C and 10 wt% montmorillonite had the highest observed MG removal from aqueous solution (6572.1 mg g −1 , 99.6% removal rate). Adsorption of MG by the sorbent was attributed to multiple sorption mechanisms, including physical interaction, cation exchange, and π-π bonding interactions, and was modulated by intra-particle diffusion. This work highlights the potential of corn straw biochar-montmorillonite composites as a favorable adsorbent for environment remediation and water treatment.
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Mingshu Xiao,Yuqing Miao,Yanping Tian,Yuhua Yan
A new catalyst based on Co-P-Se compound that is comprised entirely of cheap and earthabundant elements, was first reported for electrolytic hydrogen production . The hydrothermal method at only 473 K was employed to prepare the nanoparticles (NPs) of Co-P-Se compound. The transmission electron microscope images reveal the nanoparticles of quasis-spherical structure and extremely small size with an average diameter of around 5 nm. The composites of Co-P-Se NPs and multi-walled carbon nanotubes (MWCNT) was loaded onto the electrode surface as an active hydrogen evolution reaction (HER) electrocatalyst , which is observed using a scanning electron microscopy. The electrochemical study shows that MWCNT helps to load more Co-P-Se catalysts and enhance the electron transfer between catalysts and electrode, and Co-P-Se exhibits more catalytic activity than Co-P or Co-Se alone. A small Tafel slope of 46 mV/dec and good acid stability was observed for the hydrogen evolution reaction of Co-P-Se/MWCNT.
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高影响因子
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Lian-Kui Wu,Ji-Ming Hu
Nanoporous Co 3 O 4 (po-Co 3 O 4 ) films have been prepared on stainless steel substrate by a novel two-step method. Firstly, a composite Co 3 O 4 -SiO 2 film was fabricated via electrochemical co-deposition under a cathodic potential from the mixed sol-gel precursor. Then, the obtained composite film was underwent consecutive cycling voltammetries in a concentrated KOH solution to etch the SiO 2 component, leading to the formation of po-Co 3 O 4 films. The resultant film electrode exhibits satisfactory electrocatalytic property towards the oxygen evolution reaction (OER).
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高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2021
·
IF 3.981
Guanglan Ma,Xiao Du,Jianping Zhu,Feng Xu,Hua Yu,Juan Li
Liver cancer is one of the leading causes of cancer mortality worldwide. In this study, poly(lactide) (PLA) and hyaluronic acid (HA) co-modified half-generation of PAMAM G4.5 dendrimers (sPA) was chosen as the intelligent carrier for co-delivery of paclitaxel (PTX) and sorafenib (SOR) to treat liver cancer. The multifunctional micelle (HA-PALA@PTX + SOR) possessed a uniform size of 152.6 nm, good stability against serum medium, and a rapid in vitro drug release behavior under acidic condition in the presence of HAase. Cellular uptake study demonstrated an efficient intracellular delivery and drug accumulation in HepG2 cells. The antitumor and anti-metastasis efficacy of functionalized micelle was more obvious than that of free drugs. These data provided strong evidence that HA-PALA@PTX + SOR micelle could be utilized as a biocompatible and tumor targeted nano-carrier for the delivery of multiple anticancer drugs in liver cancer treatment.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 23
·11149-11157
·
IF 3.925
Haoran Pan,Yue Wang,Zhenjie Lu,Xinning Huang,Xingxing Chen
High-performance bifunctional electrocatalysts for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are arousing great interest aiming at efficient electrochemical splitting of water. Herein, we report a facile strategy to fabricate Co/Zn sulfide supported on Cu-foam (CoZn-S/Cu-F) as a free-standing electrode with high-performance for overall water splitting. In half-cell electrochemical systems, the overpotentials required to reach the current densities of ±10 mA cm−2 for the OER and HER are only 170 and 130 mV, respectively. After a long-term stability test running 20 000 cyclic voltammograms, the respective potential losses for the OER and HER are only 82 and 41 mV at ±50 mA cm−2. The constructed overall water splitting system driven by simulated solar energy also exhibits prominent performance with gas bubbles continuously generated at both electrodes. A cell voltage of only 1.58 V is required to reach the current densities of ±10 mA cm−2, surpassing the commercialized noble metal and state-of-the-art non-noble metal electrodes. The excellent performance for the overall water splitting is ascribed to the CoS nanoparticles covered with ZnS nanoflocs on the highly conductive Cu-foam, which allows close interfacial contact with the electrolyte, promotes mass and charge transfer, and facilitates desorption of the generated gas from the catalyst surface.
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