CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Tianli Li,Wentao Liu,Yizhou Liu,Jian Wang,Hua Hao,Zhiyong Yu,Hanxing Liu
The paramount target in advancing high-efficiency lithium-sulfur (Li–S) batteries lies in hindering polysulfides shuttling and enhancing redox kinetics. Herein, the covalent organic frameworks (designated as TBCOF) are grafted in-situ on the surface of MXene to achieve MXene@TBCOF heterostructure at ambient temperature, modulating the kinetics behavior of ions owing to its unparalleled ionic sieving functionality. The resultant compound possesses a gradient (non-conductive/ conductive) electric field effect, well-defined porous architecture, and abundant sulfophilic/lithiophilic sites, enriching the chemical space of 0D-2D heterostructures. By harnessing the multiple-in-one characteristics of MXene@TBCOF heterostructure, the formed electron-bridge of integrated conductive MXene in heterostructures prohibits the accumulation of TBCOF and MXene, serving as a versatile accelerator for the polysulfides bidirectional evolution, as comprehensively evidenced by theoretical analysis and pouch cells. Therefore, the batteries equipped with MXene@TBCOF functional separator acquire a brilliant cyclicity at a current density of 1C (with capacity decaying rate of merely 0.0191 % per cycle) during 1500 cycles. Impressively, even with a sulfur loading up to 9.31 mg cm −2 , the batteries exhibit a superior area capacity of 7.14 mAh cm −2 after enduring 90 cycles. This work proposes an innovative one-step synthesis strategy to construct catalytic “ion-sieving” heterostructure via covalent coupling for practical Li-S batteries.
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FOOD AND CHEMICAL TOXICOLOGY
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2024
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IF 3.9
Hong Huang,Ziyan Li,Zhanghua Qi,Linxi Ma,Gang Hu,Changwei Zou,Tingtao Chen
The highly toxic aflatoxin B1 (AFB1) is considered one of the primary risk factors for hepatocellular carcinoma, while effective measures after AFB1 exposure remain to be optimized. This study utilized cell-surface-display technique to construct an engineered S. cerevisiae -pYD1-ScFv-AFB1 (S.C-AF) that specifically binds AFB1, and verified the potential mechanism of S.C-AF in vivo through AFB1-induced (gastric perfused with 0.3 mg/kg/d AFB1 per day) liver injury mouse model. In this experiment, the C57BL/6 mouse model of AFB1-induced liver injury was treated with S.C (gastric perfused with 1 × 10 9 CFU/mL S.C per day) and S.C-AF (gastric perfused with 1 × 10 9 CFU/mL S.C-AF per day) for 4 weeks, respectively. With probiotic properties optimized, S.C.-AF achieved an in vitro AFB1 binding capacity 1.7 times higher than S. cerevisiae. Furthermore, S.C-AF could alleviate AFB1-induced liver injury by reducing proinflammatory cytokine secretion and apoptotic protein expression, enhancing antioxidative capacity via Nrf2 activation, and simultaneously reversing intestinal tight junction protein deficiency, increasing intestinal barrier permeability, and improving intestinal dysbiosis caused by AFB1 exposure. S.C-AF alleviates AFB1-induced liver lesions, which might be a novel intervention to mitigate aflatoxin toxicity.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Lu Liu,Yajie Chen,Jiajia Zhang,Fanze Zeng,Jinyu Bao,Wenpeng Li,Guohui Tian
The rational construction of heterojunctions with surface defects and localized surface plasmon resonance (LSPR) effect is a promising strategy for improving CO 2 photoreduction performance. Herein, the one-dimensional/two-dimensional (1D/2D) S-scheme heterostructures integrated with non-stoichiometric 1D W 18 O 49 nanowires (H-W 18 O 49 NWs) and 2D ultrathin MIL-125(Ti) nanosheets (MIL-125(Ti) NSs) were constructed by self-assembly for photocatalytic CO 2 reduction. In situ X-ray photoelectron spectroscopy (XPS), electron spin resonance spectra (ESR), and photoluminescence (PL) spectroscopy characterizations confirm the construction of S-scheme heterojunction and the solid internal electric field at the heterointerface enables effective spatial charge separation while keeping a strong redox capability. The hot electrons generated from the LSPR effect of visible-near-infrared light-excited H-W 18 O 49 NWs can be injected into MIL-125(Ti) NSs to increase the electron density and accelerate the reaction rate. Thus, the optimized H-W 18 O 49 NW/MIL-125(Ti) NS heterostructure exhibited good performance, achieving a CO yield of 202.37 μmol g -1 h −1 . This study enriches the diversity and architecture of available heterostructures for photocatalytic applications.
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Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Chuanhao Li,Yi Tian,Shuangyu Wang,Ping Yang,Xiao Zhang
To improve the stability of Ag based co-catalysts and to increase the photocatalytic performance of graphitic carbon nitride (g-C 3 N 4 ), Ag 2 Se nanoparticles were grown onto superior thin sulfur-doped g-C 3 N 4 nanosheets which was fabricated via two-step thermal polymerization at high temperature. Ultrathin S-doped g-C 3 N 4 nanosheets were prepared via two-step thermal polymerization using melamine and thiourea. The ratios of Ag 2 Se were adjusted to fabricate a series of Ag 2 Se/S-g-C 3 N 4 (Ag 2 Se/SCN) composite samples by controlled solvothermal synthesis. S-doping plays an important role in mono-dispersion of Ag 2 Se nanoparticles on S-g-C 3 N 4 nanosheets because of the control of growth sites. The photocatalytic removal of tetracycline hydrochloride test indicates that sample Ag 2 Se/SCN-3 with Ag 2 Se loading of 3 % reveals the best removal effect, in which tetracycline hydrochloride of 60 % is removed within 60 min. Photocatalytic hydrogen generation test results without co-catalyst addition demonstrate that sample Ag 2 Se/SCN-3 exhibits the best H 2 evolution rate of 2116.35 μmol·g −1 ·h −1 , which is 3.8 times of that of pure carbon nitride. The photocatalytic mechanism tests suggest that Schottky heterojunctions are formed in the Ag 2 Se/S-g-C 3 N 4 composites. The formation of Schottky heterojunctions improved the separation efficiency of photogenerated charge carriers. The incorporation of Ag 2 Se nanoparticles (as the co-catalyst) on S-g-C 3 N 4 nanosheets is the key for drastically improving the photocatalytic performance and eliminating the use of Pt co-catalyst during the photocatalytic processes.
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Nanoscale
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2024
·Vol. 16
·期 36
·17009-17023
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IF 5.8
Congcong Wang,Suili Shi,Boya Liu,Guorong Wang,Zhiliang Jin
Rational design and synthesis of a unique heterojunction photocatalyst structure is an important strategy to enhance its performance and structural stability. Herein, Co9S8/MnCdS/Co3O4 photocatalysts with double S-scheme heterojunctions were successfully prepared by coupling Co9S8 and Co3O4 sheet structures with n-type MnCdS nanoparticles through a simple solvothermal and mechanical mixing method. The construction of the dual S-scheme heterostructure offers the possibility to expand the light absorption range, extend the carrier lifetime and maximise the redox capacity. In addition, the mechanism of charge transfer and the reason for the improvement of photocatalytic activity were explored through photoelectrochemical characterization. The lamellar structures of Co9S8 and Co3O4 not only provide excellent dispersion and slow down the agglomeration of MnCdS nanoparticles, but also promote charge transfer, which improves the photocatalytic hydrogen production effect. Under simulated solar irradiation, the evolution rate of H2 after 5 h was as high as 46.44 μmol, which was 3.49 and 1.49 times higher than those of pristine MnCdS and MnCdS/Co3O4, respectively. Meanwhile, it has good stability under 20 h irradiation. This work demonstrates a novel idea for the rational design of double S-scheme photocatalysts with efficient space separation.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
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IF 14.7
Wan Sijie,Wang Wang,Cheng Bei,Luo Guoqiang,Shen Qiang,Yu Jiaguo,Zhang Jianjun,Cao Shaowen,Zhang Lianmeng
The rapid recombination of photoinduced charge carriers in semiconductors fundamentally limits their application in photocatalysis. Herein, we report that a superlattice interface and S-scheme heterojunction based on Mn 0.5 Cd 0.5 S nanorods can significantly promote ultrafast charge separation and transfer. Specifically, the axially distributed zinc blende/wurtzite superlattice interfaces in Mn 0.5 Cd 0.5 S nanorods can redistribute photoinduced charge carriers more effectively when boosted by homogeneous internal electric fields and promotes bulk separation. Accordingly, S-scheme heterojunctions between the Mn 0.5 Cd 0.5 S nanorods and MnWO 4 nanoparticles can further accelerate the surface separation of charge carriers via a heterogeneous internal electric field. Subsequent capture of the photoelectrons by adsorbed H 2 O is as fast as several picoseconds which results in a photocatalytic H 2 evolution rate of 54.4 mmol·g −1 ·h −1 without any cocatalyst under simulated solar irradiation. The yields are increased by a factor of ~5 times relative to control samples and an apparent quantum efficiency of 63.1% at 420 nm is measured. This work provides a protocol for designing synergistic interface structure for efficient photocatalysis.
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EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
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2024
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IF 4.3
Qinxiu Zhang,Genju Li,Guozhi Zhao,Chongzheng Yan,Huaiyou Lv,Yaqing Fu,Yuhan Li,Zhongxi Zhao
Orally marketed products nintedanib (NDNB) and pirfenidone (PFD) for pulmonary fibrosis (PF) are administered in high doses and have been shown to have serious toxic and side effects. NDNB can cause the elevation of galectin-3, which activates the NF-κB signaling pathway and causes the inflammatory response. S-allylmercapto-N-acetylcysteine (ASSNAC) can alleviate the inflammation response by inhibiting the TLR-4/NF-κB signaling pathway. Therefore, we designed and prepared inhalable ASSNAC and NDNB co-loaded liposomes for the treatment of pulmonary fibrosis. The yellow, spheroidal co-loaded liposomes with a particle size of 98.32±1.98 nm and zeta potential of -22.5 ± 1.58 mV were produced. The aerodynamic fine particle fraction (FPF) and mass median aerodynamic diameter (MMAD) of NDNB were >50 % (81.14 %±0.22 %) and <5 μm (1.79 μm±0.06 μm) in the nebulized liposome solution, respectively. The results showed that inhalation improved the lung deposition and retention times of both drugs. DSPE-PEG 2000 in the liposome formulation enhanced the mucus permeability and reduced phagocytic efflux mediated by macrophages. ASSNAC reduced the mRNA over-expressions of TLR-4, MyD88 and NF-κB caused by NDNB, which could reduce the NDNB's side effects. The Masson's trichrome staining of lung tissues and the levels of CAT, TGF-β1, HYP, collagen III and mRNA expressions of Collagen I, Collagen III and α-SMA in lung tissues revealed that NDNB/Lip inhalation was more beneficial to alleviate fibrosis than oral NDNB. Although the dose of NDNB/Lip was 30 times lower than that in the oral group, the inhaled NDNB/Lip group had better or comparable anti-fibrotic effects to those in the oral group. According to the expressions of Collagen I, Collagen III and α-SMA in vivo and in vitro , the combination of ASSNAC and NDNB was more effective than the single drugs for pulmonary fibrosis . Therefore, this study provided a new scheme for the treatment of pulmonary fibrosis.
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POLYMER INTERNATIONAL
·
2025
·
IF 3.6
Jinglei Xing,Lei Yang,Tianci Ma,Guofei Chen
With the rapid development of flexible optoelectronic devices, colorless polyimide films with excellent comprehensive performance have received widespread attention. In this work, a series of poly(amide-imide)s (PAIs) were synthesized by copolymerization of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride, 1,4-cyclohexanedicarbonyl chloride (CHDC) and 2,2′-bis(trifluoromethyl)benzidine. The thermal dimensional stability and mechanical properties of the PAI films were improved due to the introduction of rigid rod-like amide bonds in the polymer chain. In addition, the PAIs with more trans -CHDC content showed higher glass transition temperature ( T g ) and lower coefficient of thermal expansion (CTE). At the same time, the cooperative conformational transitions of cyclohexane rings in trans -CHDC promoted molecular chain slip and improved the film toughness. Moreover, with the introduction of the cyclohexane moiety, these PAIs had excellent optical transparency and solubility. In particular, PAI-6 exhibited high T g of 364 °C, low CTE of 29.8 ppm K −1 , high transmittance of 87% at 400 nm, tensile modulus of 3.6 GPa and elongation at break of 9.7%. Therefore, the incorporation of cyclohexane structures and amide bonds into the main chain through copolymerization with CHDC provided a simple method for the synthesis of tough colorless PAIs with excellent comprehensive properties. © 2025 Society of Chemical Industry.
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APPLIED SURFACE SCIENCE
·
2024
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IF 6.3
Hongxia Liu,Minggang Zhang,Zhipeng Jin,Hui Mei,Gangqiang Zhu,Longkai Pan,Laifei Cheng,Litong Zhang
Photocatalysis is recognized as one of the most promising techniques for environment purification. However, the inconvenient recovery of powder photocatalysts significantly impeded their practical applications. Immobilization of the photocatalysts on supports to form monolithic photocatalysts is an effective method to solve this problem. Herein, a monolithic photocatalyst Bi 12 TiO 20 /Bi 4 Ti 3 O 12 /SiOC is fabricated by growing optimal Bi 12 TiO 20 /Bi 4 Ti 3 O 12 S-scheme heterojunction onto 3D-printed porous SiOC support. On one side, S-scheme heterojunction facilitates the separation of photoinduced electrons and holes while retaining their strong redox ability. On the other side, the porous structure favors mass transport and improves light harvesting by reflecting the light several times. Under simulated solar light irradiation, the NO removal efficiency of the monolithic photocatalyst Bi 12 TiO 20 /Bi 4 Ti 3 O 12 /SiOC is 16.4 %. Furthermore, the composite has good stability and reusability, suggesting its great potential in practical application. The possible photocatalytic mechanism is proposed according to systematic experiments and density functional theory (DFT). This work provides a rational reference for constructing efficient photocatalysts for environmental purification.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Feng Yue,Mengke Shi,Cong Li,Yang Meng,Shuo Zhang,Lan Wang,Yali Song,Jun Li,Hongzhong Zhang
Directly capturing CO 2 in ambient air and converting it into value-added fuels using photocatalysis is a potentially valuable technology. In this study, Cu-porphyrin (tetrakis-carboxyphenyl porphyrin copper, CuTCPP) was innovatively anchored on the surface of TiO 2 (titanium dioxide) nanosheets to form an S-scheme heterojunction. Based on this, a photocatalytic reaction system for stably converting CO 2 in ambient air into value-added fuels at the gas–solid interface was constructed without addition of sacrificial agents and alkaline liquids. Under the illumination of visible light and sunlight, the evolution rate of CO is 56 μmol·g −1 ·h −1 and 73 μmol·g −1 ·h −1 , respectively, with a potential CO 2 conversion rate of 35.8 % and 50.4 %. The enhanced of photocatalytic performance is attributed to the introduction of CuTCPP, which provides additional active sites, significantly improves capture capacity of CO 2 and the utilization of electrons. Additionally, the formation of S-scheme heterojunction expands the redox range and improves the separation efficiency of photo-generated charges.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Qingming Meng,Meidan Luo,Minggong Lv
The suppression of expeditious complexation of photoexcited carriers and the enhancement of light harvesting are two extraordinarily momentous elements for boosting the catalytic activity of synthesized semiconductor photocatalyst. Herein, a sequence of visible-light-induced self-assembled flower-like spherical Bi 2 WO 6 /BiOBr S-scheme heterojunctions were successfully fabricated by two-step solvothermal process. The fabricated Bi 2 WO 6 /BiOBr hybrids possessed the splendid capacity to catalyze the degradation of bisphenol A (BPA) in water without the addition of surfactant compared to monocomponent photocatalyst. The optimized Bi 2 WO 6 /BiOBr (FBBH-16) possessed the most prominent photocatalytic activity, acquiring a conspicuous degradation efficiency of 91.97 % ± 1.51 % for BPA after 60 min illumination. The rate constant k (0.04078 ± 0.0009985 min −1 ) of FBBH-16, which was approximately 4.0 and 3.5 times that of bare Bi 2 WO 6 and BiOBr, respectively. Such strengthening mechanism was chiefly ascribed to the establishment of S-scheme heterojunction, which efficaciously impeded the complexation of photoexcited charge pairs and noteworthily heightened the light harvesting. Furthermore, the forceful interfacial interactions between Bi 2 WO 6 and BiOBr afforded much more active sites for BPA removal. The quenching experiments confirmed that ·OH and ·O 2− are the principal active species for BPA degradation over Bi 2 WO 6 /BiOBr hybrids. Ultimately, two possible photodegradation pathways of BPA over Bi 2 WO 6 /BiOBr heterojunctions are also come up with on the grounds of the identification of intermediate products. This work furnishes fresh insights into the fabrication of highly efficacious and stable bismuth-based S-scheme heterojunctions for treating the actual wastewater by integrating nanostructure and microscopic morphology.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jing Wang,Xingyu Niu,Qi Hao,Kun Zhang,Xinyi Shi,Liping Yang,Hui Ying Yang,Jilei Ye,Yuping Wu
Low charge separation efficiency significantly hampers the performance of photocatalytic hydrogen production. Constructing heterojunctions emerges as a crucial strategy to enhance photocatalytic activity by improving charge separation. An S-scheme heterojunction not only effectively separates the photogenerated charge in composite photocatalysts but also preserves optimal redox capabilities. This study presents the first report of CuInS 2 /CeO 2 (CIS/CeO 2 ) and demonstrates how charge separation within CIS/CeO 2 to enhance photocatalytic hydrogen production through the construction of an S-scheme heterojunction. The UV–visible-driven hydrogen production rate of CIS/CeO 2 is 4.6 and 9.4 times higher than that of CIS and CeO 2 alone, respectively. The improved photocatalytic performance primarily stems from enhanced charge separation promoted by the S-scheme heterojunction. The charge transfer pathway was confirmed as an S-scheme mechanism through a combination of band structure experiments, density functional theory (DFT) calculations on work function, internal electric field, and charge differential density distribution, alongside electron paramagnetic resonance (EPR) experiments. Multiple perspectives were employed to elucidate the reasons behind facilitating efficient charge separation. This research provides valuable insights for advancing photocatalytic performance.
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