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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高影响因子
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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ACS Catalysis
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2024
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IF 11.3
Heng Cao,Xiaodi Zhu,Jiawei Xue,Ruyang Wang,Jiusi Shang,Peiyu Ma,Chengyuan Liu,Jun Bao
Precise design of photocatalysts with the demanded active surface structure for highly efficient and selective CO2 photoreduction is crucial but challenging. Here, by taking CdS as a prototype, single-atom Cu is successfully constructed on Cd-deficient CdS (Cd1–xS) to improve the performance of CO2 photoreduction with H2O as proton donor. The optimal Cu/Cd1–xS with Cd vacancies (VCd)-mediated single-atom Cu exhibits nearly 100% selective CO production and a more than three-fold higher CO evolution rate compared to that of Cd1–xS. Both experimental identification and DFT theoretical simulation unveil that the VCd-mediated single-atom Cu render Cu–S pair sites to function as more catalytically active sites for dissociating H2O and promoting the corresponding proton supply, which favors the subsequent protonation of the adsorbed CO2 at the adjacent Cd sites via the two-proton coupled two-electron transfer pathway. This work demonstrates the importance of modulating proton supply from the oxidation half-reaction for facilitating the overall CO2 photoreduction, advocating an overall-reaction perspective for the design and development of highly efficient and selective CO2 conversion photocatalysts.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
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IF 6.3
Letu Siqin,Wenjing Xin,Ruijian Liu,Hongmei Luan,Lei Wang,Yiming Wang,Shuyu Li,Jingyuan Guo,Yu He,Jiayong Zhang,Bin Yao,Chengjun Zhu
Interfaces quality have always been considered the key factors in the fabrication of efficient Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells, and harmful defects at the interface can significantly reduce the performance of the device. Here, we propose a dual passivation strategy by adding Na to the surface of the absorber layer (CZTSSe) to passivate the CZTSSe/CdS interface and treating the buffer layer (CdS) using ultraviolet (UV) irradiation to passivate the CdS/ZnO interface. Due to the Na doping passivation, the absorber surface conductivity increases while the roughness decreases and detrimental defects that can lead to nonradiative recombination are reduced. The power conversion efficiency (PCE) of the cell is improved by about 1 percentage point by Na passivation. The contributions of open-circuit voltage ( V oc ), short-circuit current density ( J sc ), and fill factor (FF) to the improvement of PCE have been quantified as 50.64%, −5.58%, and 54.94%, indicating that Na doping can significantly boost V oc and FF. UV-ozone passivation reduces residual carbon organics in the CdS buffer layer , weakens carrier recombination, allows for more light absorption , and widens the depletion region , which favors efficient carrier collection. The estimated contribution of V oc , J sc , and FF to the PCE of the device is 8.78%, 119.59%, and −28.37%, respectively, demonstrating that UV-ozone passivation can significantly improve the J sc of the device. The two passivation strategies complement each other's advantages and achieve a synergistic effect . Our prepared champion device exhibits a PCE of 10.69% and remarkable long-term stability.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2024
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IF 0
Qin Chao,Wu Junxue,Lu Xinyu,Gu Chenggang,Guo Yang,Hu Guanjiu,Chen Min,Xia Kang,Wang Hui,Xie Mingjie
The widespread occurrence of emerging brominated flame retardant tetrabromobisphenol S (TBBPS) has become a major environmental concern. In this study, a nanoscale zero-valent iron (nZVI) impregnated organic montmorillonite composite (nZVI-OMT) was successfully prepared and utilized to degrade TBBPS in aqueous solution. The results show that the nZVI-OMT composite was very stable and reusable as the nZVI was well dispersed on the organic montmorillonite. Organic montmorillonite clay layers provide a strong support, facilitate well dispersion of the nZVI chains, and accelerate the overall TBBPS transformation with a degradation rate constant 5.5 times higher than that of the original nZVI. Four major intermediates, including tribromobisphenol S (tri-BBPS), dibromobisphenol S (di-BBPS), bromobisphenol S (BBPS), and bisphenol S (BPS), were detected by high-resolution mass spectrometry (HRMS), indicating sequential reductive debromination of TBBPS mediated by nZVI-OMT. The effective elimination of acute ecotoxicity predicted by toxicity analysis also suggests that the debromination process is a safe and viable option for the treatment of TBBPS. Our results have shown for the first time that TBBPS can be rapidly degraded by an nZVI-OMT composite, expanding the potential use of clay-supported nZVI composites as an environmentally friendly material for wastewater treatment and groundwater remediation.
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PubMed
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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SENSORS AND ACTUATORS A-PHYSICAL
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2024
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IF 4.1
Jiaping Yang,Junpeng Deng,Yansheng Liu,Zhenle Qin,Jin Zhou,Xiaobo Jia,Guofu Wang,Yuqiang Weng,Feng Ling,Bin Zhou
Developing an efficient and sensitive method for detecting the coronavirus disease (COVID-19) is crucial. In this study, a phase-dependent SPR biosensor has been developed to detect the SARS-CoV-2 S protein with high sensitivity. The phase shifts of the SPR spectral interferogram are extracted using the windowed Fourier transform (WFT) method. The summation of the phase shifts of the prominent frequency, which make up the SPR spectral interferogram, is used as a numerical index to reflect the “negative” or “positive” results. The SARS-CoV-2 S protein antibody is modified onto an Au film, which serves as a sensing surface when detecting the SARS-CoV-2 S protein. The SARS-CoV-2 S protein antibody functionalized Au nanoparticles are used to form a (anti-S@AuNPs)-(SARS-CoV-2 S protein)-(Au film) sandwich structure, which reduces the SPR detection limitation to 1 ag/mL. An external laser is then used to induce the localized surface plasmon resonance (LSPR) between the AuNPs and the Au film in the sandwich structure, enhancing the detecting sensitivity by 357 %. This study provides a label-free method for detecting the SARS-CoV-2 S protein with low concentrations, indicating its potential in detecting the SARS-CoV-2 virus and viral disease diagnosis.
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ENERGY & FUELS
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2024
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IF 5.2
Haixuan Gao,Chuanhe Ma,Jinhui Zhang,Jinchun Jiang,Ye Chen,Lin Sun,Hailong Wang
In the prior art of CZTSSe solar cells, the traditional cadmium salt (Cd-salt) CdSO4 is widely considered as a common raw material for preparing CdS buffer layers. However, in this study, we systematically demonstrated the phase structure and transmission spectra improvement effect of the other three types of Cd-salts, Cd(NO3)2, CdCl2, and CdAc2, on the CZTSSe/CdS heterojunction (HJT) compared to CdSO4. CZTSSe/CdS HJT prepared by Cd(NO3)2 showed the strongest CdS phonon characteristic peaks at 295.9 and 597.6 cm–1, indicating a pure crystal phase. The transmittance of CdS films prepared by Cd(NO3)2 is 20–35% higher than the other three Cd-salts in the light range of 350–1000 nm, which effectively improved the band gap of the films (2.41 eV) and depressed the photon absorption and scattering. Accordingly, CZTSSe solar cells based on the aforementioned Cd-salts showed that Cd(NO3)2 possessed the best ability to improve the photovoltaic conversion efficiency (PCE), about 5.7% more than the traditional CdSO4 salt. After Sn2+ replaced by Sn4+ in the precursor solution, the PCE of CZTSSe solar cells using Cd(NO3)2 exceeded 10% (Total area = 0.21 cm2, PCE = 10.23%, VOC = 0.485 V, JSC = 31.4 mA/cm2, FF = 67.1%, without MgF2 antireflective layer).
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2024
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IF 15.7
Lingkun Yang,Zongjun Li,Xin Wang,Lingling Li,Zhe Chen
Photocatalysts featuring S-scheme heterojunctions offer considerable potential for both the photocatalytic CO 2 conversion and the degradation of antibiotics, providing practical solutions for energy crises and environmental challenges. In this work, 1D/2D CoTiO 3 /g-C 3 N 4 (CTO/CN) S-scheme heterojunction is synthesized through electrospinning and calcination . The close interweaving of g-C 3 N 4 nanosheets around CoTiO 3 nanofibers creates ample contact areas and active sites, resulting in exceptional photocatalytic CO production capability. The optimal mass ratio of CoTiO 3 to g-C 3 N 4 is 2%, and the CO and CH 4 yields are 46.5 and 0.825 μmol g -1 h -1 . Moreover, comparing with monomeric g-C 3 N 4 , this composite achieves a better CO yield with 43.5 times and displays an impressive product selectivity of 98.3% for CO 2 -CO photoreduction . In addition, the 2% CTO/CN photocatalyst demonstrates outstanding photocatalytic degradation efficiency, with degradation rates of 95.88%, 95.53%, and 71.23% for tetracycline hydrochloride , oxytetracycline , and ofloxacin , respectively. These enhanced photocatalytic properties are attributed to the S-scheme system constructed by CoTiO 3 with g-C 3 N 4 , maintaining strong oxidation-reduction capabilities while efficiently segregating photogenerated charges, with the existence of S-scheme heterojunction confirmed through various analyses. Furthermore, in situ studies and 13 C calibration experiments reveal that CO and CH 4 originate from the photocatalytic CO 2 conversion, further highlighting the potential of this work in advancing CO 2 photoreduction . This study offers novel insights into designing effective S-scheme heterojunction photocatalysts for practical applications to address environmental and energy challenges.
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Surfaces and Interfaces
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2024
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IF 5.7
Qinghua Liu,Xintong Yao,Xujing Zhao,Feiyang Zhang,Dafeng Zhang,Junchang Liu,Peiqing Cai,Xipeng Pu
Photocatalytic degradation stands as an effective remedy to solve the global environmental pollution caused by organic pollutants. In this study, we synthesized a NiFe layered double hydroxide/Bi 2 WO 6 (NF-LDH/BWO) Step-scheme (S-scheme) heterojunction. The attachment of NF-LDH particles on flower-like BWO increased the active sites and the interface area between two pure materials. The construction of LDH/BWO heterojunction endowed with improved light absorption capacity and boosted separation efficiency of photo-generated carriers. Consequently, compared with BWO and NF-LDH, the NF-LDH/BWO composites showed enhanced photoactivities. At NF-LDH mass ratio of 10%, the optimal degradation rate of ciprofloxacin (75.9%) within 60 min under visible illumination was achieved, 1.43- and 9.37-fold those of BWO and NF-LDH, respectively. In addition, the NF-LDH/BWO composite also demonstrated excellent cyclic stability. The S-scheme mechanism was proposed based on both experimental and density functional calculation results.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Jia Zhang,Jiliang Ma,Rui Cui,Weikang Ling,Min Hong,Runcang Sun
Promoting interfacial separation and charge transfer within S-scheme heterojunctions is crucial for effectively enhancing photocatalytic H 2 production. Here, we have successfully synthesized flower-shaped CoP@MoS 2 -x S-scheme heterojunction photocatalysts through a straightforward thermal annealing and hydrothermal process. These photocatalysts demonstrated exceptional performance in H 2 generation assisted by biorefinery. The optimal CoP@MoS 2 -2 photocatalyst achieved an H 2 evolution rate of 4339.39 μmol g −1 h −1 , which is 8 and 5.5 folds of individual CoP and MoS 2 , respectively. Meanwhile, the system was accompanied by 81.0 % yield of lactic acid, which is higher than those of CoP and MoS 2 . The enhanced photocatalytic performance of CoP@MoS 2 -x heterojunctions stems primarily from their unique S-scheme charge carrier transport mechanism. This S-scheme heterojunction structure not only boosts the separation efficiency of photogenerated electron-hole pairs but also preserves a robust photocatalytic redox capacity. This study provides a new avenue for designing efficient photocatalysts of H 2 generation assisted by biomass oxidation.
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RESEARCH ON CHEMICAL INTERMEDIATES
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2024
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IF 2.8
Guo Yaping,Li Jing,Zhang Jin,Wang Xiujv
The photocatalyst S-scheme BiFeO 3 –g-C 3 N 4 had been prepared by combining calcination and hydrothermal reaction. 10% BiFeO 3 –g-C 3 N 4 composite showed the greatest photocatalytic effect during tetracycline hydrochloride degradation (TC-HCl, 99.7% removal) within 100 min. Meantime, the photocatalytic efficacy was further confirmed by the removal efficiency of ciprofloxacin(CIP, 98.2% removal). The formation of S-scheme heterostructure and matching valence band and conduction band may be responsible for the improved photocatalytic efficiency of BiFeO 3 –g-C 3 N 4 . This leads to the rapid separation of photo-induced carriers, increased electronic transport capacity, and extended carrier lifetime. A study was done on the potential mechanism by employing chemical scavenger experiment revealing the paramount role of O 2 − . The composite could maintain photocatalytically stable even after five consecutive reaction cycles. The recovery efficiency of 10% BiFeO 3 –g-C 3 N 4 was high because of the magnetic property of BiFeO 3 , which was convenient for the recycling process. The produced photocatalyst has potential use in the field of photocatalysis, and this work provides a novel thought to raise the photocatalysts recovery efficiency during recycling.
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