APPLIED CATALYSIS B-ENVIRONMENTAL
·
2013
·
IF 5.825
Dong Ma,Yanjun Xin,Mengchun Gao,Juan Wu
In present work, S-doped TiO 2 nanofibers, with several hundred nanometers in diameter, have been prepared via electrospinning technique using thiourea and CS 2 as the sulfur precursors (denoted as UTF and CTF, respectively). The results revealed that sulfur atoms were successfully incorporated into the bulk phase of TiO 2 nanofibers. Cationic doping was found with the substitution of Ti 4+ by S 6+ and Ti O S bonds were formed in the UTF sample, but anionic doping was obtained in the CTF sample and O Ti S bonds were produced via the S 2− substituted for O 2− . Meanwhile, evidence showed that chemisorbed SO 4 2− groups were present on the surface of both S-doped samples. Furthermore, S-doping could effectively inhibit the growth of crystalline grain size and obviously increase light absorbance in visible region. The photocatalytic activity of obtained nanofibers was analyzed for the degradation of organic pollutants by visible-light irradiation, and the photocatalytic mechanism was investigated by employing several scavengers for active species. Results showed that photoinduced holes (h + ) and chemisorbed hydroxyls (OH ads − ) on catalyst surface played a vital role in the photocatalysis of UTF system, but photoinduced holes (h + ) and electrons (e − ) had the nearly equal importance in CTF system.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2017
·
IF 2.686
Bin Dai,Chengxiao Wu,Yixuan Lu,Degang Deng,Shiqing Xu
The reaction temperature was controlled to investigate the formation process of S-doped CDs (CDs-S). Different low-molecule-weight organics were used as precursors, it reveals that the N and/or S atoms containing in the precursors are related to the formation and luminescence mechanism.
✓ 已验证
产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2025
·
IF 5.4
Xiaoxiong Jin,Wanying Wang,Hui Liu,Jing Zhao,Pengfei Li,Aoting Li,Ziyuan Song
Poly(l-glutamic acid)s (PLGs) are promising bone-targeting ligands due to their high molecular weight and facile preparation. Nevertheless, the bone-targeting efficiency of PLGs is still relatively low, validating the necessity to further enhance targeting through structural optimization. Herein, we report the use of a heteropolypeptide strategy to improve the bone targeting of PLGs through the incorporation of another side-chain functionality for enhanced affinity with bone tissues. Specifically, the introduction of cationic amino or aromatic phenolic side-chain residues resulted in a ∼2.3-fold or ∼1.6-fold increase in the in vivo bone targeting, respectively. Cationic modification not only improved the affinity with bone minerals but also exhibited prolonged retention in the bone tissues for more than 60 days. This work highlights the use of a heteropolypeptide library to screen and optimize the performance of polypeptide materials, offering promising bone-targeting polymeric materials for the design of bone-related nanomedicine.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Xenobiotics
·
2024
·Vol. 14
·期 2
·452-466
·
IF 6.8
Bingying Li,Yongsi Huang,Duan Pi,Xiang Li,Yafen Guo,Zhiying Liang,Xiaohong Song,Junjie Wang,Xuegeng Wang
Bisphenol S (BPS), one of the substitutes for bisphenol A (BPA), is widely used in various commodities. The BPS concentrations in surface water have gradually increased in recent years, making it a predominant bisphenol analogue in the aquatic environment and raising concerns about its health and ecological effects on aquatic organisms. For this study, we conducted a 96 h acute toxicity test and a 15-day developmental exposure test to assess the adverse effects of BPS exposure in Chinese medaka (Oryzias sinensis), a new local aquatic animal model. The results indicate that the acute exposure of Chinese medaka embryos to BPS led to relatively low toxicity. However, developmental exposure to BPS was found to cause developmental abnormalities, such as decreased hatching rate and body length, at 15 dpf. A transcriptome analysis showed that exposure to different concentrations of bisphenol S often induced different reactions. In summary, environmental concentrations of BPS can have adverse effects on the hatching and physical development of Chinese medaka, and further attention needs to be paid to the potential toxicity of environmental BPS.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2025
·
IF 11
Hou Yao-Lin,Zhang Yu-Qing,Li Dan,Xie Hai-Ming,Liu Jia,Liu Yu-Long,Zhu Jie-Fang
Developing effective heterostructure strategies to mitigate the shuttling effect and accelerate lithium polysulfide (LiPS) conversion remains a critical challenge in lithium–sulfur (Li–S) batteries. Here, we report the first carbon–free VO 2 –VS 2 heterostructure material synthesized via in situ sulfurization, applied as a modifier on a commercial polypropylene (PP) separator (denoted as VO 2 –VS 2 @PP). The as–prepared VO 2 –VS 2 nanorods synergistically combine the high absorptivity of VO 2 with the efficient catalytic properties of VS 2 , simultaneously enhancing LiPS anchoring and promoting its conversion. We systematically investigate the influence of material composition on battery performance, leveraging these functional attributes, Li–S cells incorporating VO 2 –VS 2 @PP exhibit exceptional cycle stability (over 500 cycles at 1C), impressive rate performance (807 mAh·g –1 at 5C), desirable reversibility (49.9% capacity retention after 300 cycles at 5C) and exceptional pouch cell performance (3.65 mAh·cm –2 after 50 stable cycles at 0.1C). This study underscores the potential of tailored heterostructures in realizing high–performance Li–S batteries, offering new insights for next–generation energy storage solutions. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Huagen Liang,Haoran Wang,Anhu Wang,Ruolin Cheng,Shengyu Jing,Fu Chen,Palanisamy Kannan,Georgia Balkourani,Panagiotis Tsiakaras
Graphitic phase carbon nitride (g-C 3 N 5 ), as a novel n -type metal-free material, is employed as a visible light-receptive catalyst because of its narrow band gap and abundant nitrogen. To overcome the low carrier mobility efficiency of g-C 3 N 5 , its modification by K ions was adopted. In addition, In 2 S 3 was selected to couple with modified g-C 3 N 5 to overcome the recombination of photogenerated e − /h + . As a novel photocatalytic material, it was proven to possess a high visible light absorption capacity and a strong H 2 O 2 production ability (up to 3.89 mmol⋅L -1 in 2 h). Moreover, a S-scheme heterojunction structure was successfully constructed between the two materials, which was tested and confirmed to be successful in raising the photogenerated e − /h + separation efficiency. Ultimately, the primary processes of photocatalytic H 2 O 2 production were summarized by superoxide radical and rotating disc electron measurements. This research provides a fresh perspective for the synthesis of C 3 N 5 -based S-scheme heterojunction photocatalysts for producing H 2 O 2 .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Yingna Chang,Yuxiang Zuo,Jiawei Li,Jindi Wang,Kefan Song,Yu Liu,Rong Xing,Guoxin Zhang
Supportive atomic Zn electrocatalysts exhibit excellent stability for oxygen reduction reaction (ORR) due to their fully occupied d orbitals of Zn, but their catalytic activity is not satisfactory. Whereas heteroatom doping can anchor the Zn atoms to achieve higher Zn loading; and additionally serve as auxiliary sites to enhance the catalytic activity of Zn sites. Herein, we present a method for the synthesis of N, S co-doped carbon with highly dispersed Zn (named Zn-NSC). The ORR activity of the Zn-NSC catalysts is optimized by adjusting the pyrolysis temperature and the atomic structure of the dopant molecules. The optimized Zn-NSC demonstrates significantly enhanced ORR electrocatalytic activity, this is attributable to its highly co-doping of N and S heteroatoms that are adjacent to Zn atoms. Specifically, the Zn-NSC 3 catalyst exhibits remarkable ORR characteristics with excellent onset voltage (0.97 V vs RHE) and half-wave potential (0.87 V vs RHE), surpassing those of Pt/C (0.97 V and 0.85 V, respectively). Additionally, the Zn-NSC 3 can be utilized as efficient cathode for Al-air batteries, achieving a high power density of 119.4 mW cm −2 and satisfactory discharge stability. This work proposes an approach for synthesizing low-cost and efficient ORR electrocatalysts for Al-air battery applications.
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Yan Danni,Dong Yuhui,Wei Naiwei,Yang Shuai,Zhu Hong,Gu Wanzhong,Zou Yousheng,Zeng Haibo
Quaternary Ag-In-Ga-S (AIGS) quantum dot (QD) is considered a promising, spectral-tunable, and environmentally friendly luminescent display material. However, the more complex surface defect states of AIGS QDs resulting from the coexistence of multiple elements lead to a low (< 60%) photoluminescence quantum yield (PLQY). Here, we develop a novel convenient method to introduce Z-type ligands ZnX 2 (X = Cl, Br, I) for passivating the surface defects of AIGS QDs to dramatically enhance the PLQY and stability without affecting the crystalline structure and morphology. Results show that the addition of ZnCl 2 during the purified process of AIGS QDs leads to a 3-fold increase of PLQY (from 28.5% to 87%). Impressively, the highest PLQY is up to a recorded value of 92%, which is comparable to typical heavy metal QDs. Exciton dynamics studies have shown that the rapid annihilation process of excitons in treated QDs is inhibited. We also confirm that the improvement in PLQY is a result of the effective passivation of the non-coordinating atom on the QD surface by building a new bonding between sulfur dangling and Zn 2+ . The realization of high PLQY will further promote the application of AIGS QDs in luminescent displays.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jian Gao,Shu Wang,Yupu Liu,Denghui Yang,Xin Li,Fangzheng Yuan,Shuang Han,Wenlong Yang,Hui Zhang
It is of great significance and challenges to construct physical field-enhanced photocatalysts for energy and environmental applications. Herein, an artificial-photosynthesized CdS/PbTiO 3 S-scheme heterostructures with the enhancement of polarization electric field have been developed to promote the bifunctionally catalytic efficiencies for Cr(VI) photoreduction degradation of heavy metal pollution and Tetracycline (TC) photooxidation degradation of antibiotic. In our work, CdS nanoparticles are selectively grown on the positive polarization planes of PbTiO 3 microplates to form the same direction for both the ferroelectric polarization field of PbTiO 3 and the built-in electric field of S-scheme heterojunction. In this case, the stable heterostructures of PTO(00−1)/CdS(010) are obtained, and the greatly improved photocatalytic performances of redox degradation are achieved. The charge transfer mechanism and the synergetic effect between the spontaneous ferroelectric polarization and S-scheme heterojunction have been revealed by DFT calculations and experimental verifications. This interesting finding provides new insight into the design of efficient artificial-photosynthesized photocatalytic systems and we hope our work could serve as a valuable reference for our colleagues.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Rui Li,Lipeng Wang,Meilin Yin,Yangyang Lei,Shaokun Tang
CO 2 capture and utilization has received worldwide attention in view of the goals of sustainable development and carbon neutrality. Ionic liquid-functionalized covalent-organic frameworks (IL-COFs) possess high adsorption performance and catalytic activity, which overcome the drawbacks of cycling difficulty for pure ILs as homogeneous catalysts and deficient catalytic active sites for COFs. In this work, BpCOF is first rapidly synthesized by solvothermal-scCO 2 -assisted activation method. Afterwards, poly(ionic liquid)s and metal sites are introduced into BpCOF to obtain Zn-R-PIL-BpCOF (R = COOH, CH 3 ) materials through two-step modification including free radical polymerization and metallization. Then the CO 2 adsorption performance, catalytic activity for CO 2 cycloaddition with epichlorohydrin and catalytic recyclability of the materials are investigated. The excellent diffusion behavior of supercritical CO 2 and extremely low surface tension contribute to the rapid synthesis of highly crystalline BpCOF. The crystal structure and micromorphology of the materials are preserved after the two-step modification while the specific surface area and pore volume are decreased. The isosteric heat of adsorption of CO 2 for the typical sample Zn-COOH-PIL-BpCOF is higher than that of BpCOF, indicating the enhanced interaction with CO 2 by the integrated poly(ionic liquid)s and metal sites. Then Zn-COOH-PIL-BpCOF serves as catalyst and the yield of cyclic chloropropylene carbonate reaches 99.3 % at 90 °C and 2.0 MPa for 16 h under solvent-free and co-catalyst-free conditions. The carboxyl hydrogen-bond donors (HBDs), Zn 2+ Lewis acidic sites and Br − nucleophilic group in Zn-COOH-PIL-BpCOF play the roles synergistically. Zn-COOH-PIL-BpCOF exhibits excellent catalytic sustainability and reusability with the product yield exceeding 95 % after six cycles.
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2024
·
IF 2.6
Haibo Zeng,Shuai Yang,Danni Yan,Hong Zhu,Naiwei Wei,Yuhui Dong,Yousheng Zou
In recent years, Ag-In-Ga-S (AIGS) quaternary quantum dots (QDs) have garnered significant attention as a novel class of environmentally friendly and non-toxic QDs. However, the hydrothermal synthesis method for aqueous QDs has been plagued by issues such as inconsistent size, subpar crystallinity, and low photoluminescence quantum yield (PLQY). Herein, we developed a dual ligand strategy based on the hard and soft acids and bases (HSAB) theory to synthesize aqueous AIGS QDs with an impressive PLQY of up to 64.3%, currently the highest value among hydrothermal-synthesized uncoated I-III-VI QDs. The QDs exhibit better crystallinity, narrow size distribution (3.07 ± 0.31 nm), and remarkable stability. The mechanism underlying this dual ligand strategy was further elucidated, shedding light on the distinct influences of different ligands on the growth of QDs. The high PLQY contributes to the further application of aqueous AIGS QDs in luminescent displays and the field of biology. Meanwhile, this ligand strategy has broad reference significance for efficient preparation of other water-soluble QDs.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhongzheng Zhu,Siyu Liu,Junyi Yao,Qitan Zheng,Yutong Guo,Yujie Chen,Hezhou Liu,Hua Li
To address the issue of low strength and recovery stress in recyclable shape memory polymer (SMP) materials with dynamic covalent bonds in practical applications, we propose a method based on Ag-S coordination interactions to improve dynamic covalent bonds, thereby preparing recyclable SMP with high recovery stress and large recovery strain. The introduction of in situ reduced silver nanoparticles (AgNPs) in the SMP system play multiple roles, serving as additional physical crosslinking points at the microscale and coordinating with disulfide bonds in the system to construct a multi-level dynamic network structure. This endows the material with exceptional mechanical properties (tensile strength of 25.93 MPa and fracture strain of 1466.83 %) and recovery driving stress (5.59 MPa), while maintaining more than 99 % shape recovery and fixity rate. Furthermore, due to the outstanding photothermal performance of AgNPs, the composite material has acquired remote photothermal driving capabilities. The proposed Ag-S coordination enhancement offers a new approach for SMP materials that achieve both large actuation distance and high recovery stress, holding significant potential for applications in soft robotics and actuators.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）