Materials Research Express
·
2018
·Vol. 5
·期 7
·075030
·
IF 1.151
Jian Feng,Xiaosheng Yang,Guangwei Feng,Hong Xu
In this study, the different compositions of Zn–Cu–In–S quantum dots (ZCIS QDs) were prepared by a facile synthetic approach. The compositions and particle sizes of ZCIS nanocrystals were precisely controlled. The composition-dependent molar extinction coefficient of nonstoichiometric ZCIS QDs has been determined by combination of ICP-MS with UV–vis absorption and TEM. The molar extinction coefficient values were found to comply with a power function with exponents of 3.6 and 1.8 with the variation of the content of Cu or Zn, respectively. The extinction coefficient of ZCIS QDs exhibited the composition dependency and seemed to be larger than that of CuInS2 for a given size. The determination of the extinction coefficient makes it feasible to calculate the concentration of ZCIS QDs in solution and promotes its further applications in bioanalysis.
研究领域:
材料科学
·
光学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yang Sun,Yiwen Gao,Yangxue Li,Donglei Zou
The widespread pollution by tetracycline antibiotics has been proved to be a serious problem to human health and biological systems. Synergistic adsorption-photocatalysis method has demonstrated satisfactory miraculous results for the removal of recalcitrant pollutants. Here we constructed a novel bifunctional In-MOG with hierarchical pore structures, large specific areas and abundant active sites via room-temperature synthesis, achieving 92.93% and 95.58% removal of chlortetracycline (CTC) and tetracycline (TTC) in 60 min, respectively. The excellent removal performance was attributed to the synergistic adsorption-photocatalysis process that resembled a repetitive assembly line work of “enriching and destroying” pollutants. Briefly, CTC/TTC molecules in the aqueous environment were rapidly adsorbed by In-MOG through pore filling, electrostatic interaction, hydrogen bonding interaction, complexation and π-π stacking interaction to accomplish enrichment of pollutants; meanwhile, the generated h + and •O 2 − were involved as the main active species in the rapid in-situ photodegradation of pollutants to complete their destruction. Furthermore, In-MOG exhibited excellent anti-interference ability and reusability. Afterwards, in order to address the drawback of easy agglomeration and difficult recycle of powdered In-MOG, In-MOG/BC with the advantages of good removal performance and fine stability was constructed by immobilizing In-MOG into bacterial cellulose (BC) flexible substrate. Further exploration of In-MOG/BC in a self-built reactor for CTC/TTC removal from dynamic systems was carried out to assess the prospect for large-scale applications. Overall, the facile rational design for In-MOG/BC with synergistic adsorption-photocatalysis and the continuous flow reactor provides worthwhile insights in the water purification field.
研究领域:
环境科学
·
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 39
·10114-10120
·
IF 4.696
Zhenyang Liu,Aiwei Tang,Miao Wang,Chunhe Yang,Feng Teng
A simple heating-up colloidal approach has been developed to synthesize quaternary Cu–In–Zn–S (CIZS) nanocystals with different emission colors, which can be tuned by varying the Cu : In : Zn precursor ratios. The as-obtained products have a quasi-triangular shape with a small size distribution, and their crystal phase can be varied from cubic zinc-blende to hexagonal wurtzite structure with an increase of Cu stoichiometry. The inductively coupled plasma optical emission spectrometry (ICP-OES) results reveal that the as-obtained CIZS nanocrystals are Cu-deficient, and the Cu-vacancies have a significant effect on their optical properties. Moreover, the photoluminescence (PL) spectra of the CIZS nanocrystals recorded at different growth periods indicate that the partial cation exchange of Cu+ and In3+ with Zn2+ takes charge of the growth process. After coating a ZnS shell over the CIZS nanocrystals, the PL quantum yield (PLQY) is improved greatly and a blue-shift of the PL peak is observed as compared to that of plain CIZS nanocrystals. More interestingly, the highly luminescent CIZS/ZnS core/shell nanocrystals with different colors have been incorporated into poly(dimethylsiloxane) (PDMS) to be fabricated on an engraved “BJTU” glass substrate, and the as-obtained PDMS membranes exhibit a bright emission under UV light, which also show good stability when they are bent arbitrarily or immersed in water. This heating-up method has also been extended to the preparation of five-component Cu–Ag–In–Zn–S and Cu–Mn–In–Zn–S nanocrystals, which possess a cubic zinc-blende crystal structure and have bright luminescence. Our work may shed light on the synthesis of multi-component semiconductor nanocrystals.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2020
·Vol. 31
·期 12
·2967-2979
·
IF 2.578
Chao Ma,Jide Wang,Liqin Cao
The current study reports the utilization of MIL-100(Fe) as Pickering emulsifiers to stabilize CO 2 -in-water high internal phase emulsions, thereby synthesizing interconnected macroporous hybrid monoliths with adjustable pore sizes. During such a green synthesis procedure, the influences of Fe-MOF type and content, carbon dioxide density, and the amount of crosslinker have been explored respectively. The as-synthesized MOF-containing poly(HIPE)s were characterized by FT-IR, XRD, SEM, CLSM, and TGA. The morphology of the monoliths was mainly observed by EDS-mapping and SEM, which showed that Fe-MOFs were uniformly distributed into the monolithic matrix and the void sizes and interconnected pore sizes were 20 to 150 μm and 5 to 50 μm, respectively. Furthermore, the MIL-100(Fe)-containing monoliths exhibited an excellent elasticity and can quickly return to their original state when reaching up to 90% compressive strain without failing. To evaluate the adsorptive properties of the composite monoliths, the immobilization of β-amylase on the obtained monoliths was studied. The results of immobilized enzymes showed that the highest protein adsorption rate can reach 55% and the immobilization efficiency can reach 89%. Since our synthetic route is clean and controllable, biocompatible monoliths with good elasticity and toughness were prepared, which presents a viable strategy to produce hybrid monoliths for bio-medical applications.
研究领域:
材料科学
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生物医学工程
·
酶工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jie Zhou,Hao Liu,Chao Xiong,Peng Hu,Hao Wang,Xuyu Wang,Hongbing Ji
Propane dehydrogenation (PDH) has been a promising method to satisfy the increasing demand for propylene, but Pt-based catalysts always suffer from sintering and coke formation. Developing stable and efficient catalysts for PDH is of great significance for the industry. Herein, the paper reports that a catalyst with potassium-promoted Pt-In bimetallic clusters encapsulated in silicalite-1 (S-1) zeolite works as an efficient and stable catalyst for PDH. The catalyst achieves a propane conversion of 43.73 % with 97.14 % selectivity of propene and an extremely high propylene productivity of 20.33 mol g Pt -1 h -1 with a weight hourly space velocity (WHSV) of 6.75 h −1 . No obvious deactivation occurs after 48 h on stream, affording an extremely low deactivation constant of 0.0025 h −1 . The introduction of indium species greatly improves the propene selectivity and restricts the coke formation. The introduction of K + into S-1 can significantly enhance the catalytic activity and the stability of the catalyst. The catalyst with excellent activity and stability is potential for industrial application.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2014
·Vol. 49
·期 20
·6944-6951
·
IF 2.305
Wang Yongjuan,Zhou Yuming,Zhang Tao,He Man,Bu Xiaohai
The biomolecule–inorganic hybrid materials are potential candidates for low infrared emissivity materials due to the combined functionalities of the biomolecules and the inorganic components. In this study, we describe a facile approach to fabricate DNA/layered double hydroxides (LDHs) nanohybrid by coassembly of exfoliated Ni–In LDHs nanosheets with DNA. In the assembly progress, exfoliated LDHs nanosheets and DNA with different initial DNA/LDHs mass ratio were mixed together, and the DNA intercalated LDHs nanohybrid was obtained only when the input DNA/LDHs mass ratio is ≤0.3 mg/mg. The structure and morphology of as-fabricated hybrid materials were characterized by X-ray diffraction (XRD), UV–Vis absorption spectra, Fourier transform infrared (FT-IR) spectra, thermogravimetry (TG), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicate that the reassembled product has layered structures incorporated with DNA biomolecule. The nanohybrid with expanding LDHs structure of d
003 = 2.6 nm confirms the intercalation of DNA molecules into the LDHs interlayer. The helix chain oriented parallel to the basal plane of host layer forming ordered sandwich structure. The infrared emissivity value of the DNA/LDHs nanohybrid was then investigated. It was found that the infrared emissivity values were significantly reduced by coassembly of exfoliated LDHs nanosheets with DNA, which may be attributed to the synergistic effect and interfacial interaction between the DNA biomolecule and inorganic LDHs layers reinforced by the construction of ordered sandwich structure.
研究领域:
材料科学
·
生物化学
✓ 已验证
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.
研究领域:
材料科学
·
纳米技术
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
BIOORGANIC CHEMISTRY
·
2021
·
IF 5.275
Qinxiang Zheng,Feng Ding,Xiaojuan Hu,Jiayao Feng,Jianliang Shen,Xiaojun He
Aluminum (Al), gallium (Ga), indium (In) are three essential elements in group IIIA of the periodic table, which all share similar chemical properties and are also vital in many aspects of bio- and environmental systems. Proper control of their levels is thus necessary as overexposure to them has been linked to onsets of many diseases. Fluorescence based molecular probes have always been the driving horse for detecting vital ions including group IIIA ions. However, only a few such probes have been reported so far and all of them are faced with one or more shortcomings such as not very high sensitivity, incapability to detect multiple ions simultaneously, and poor cell penetration abilities due to emitted fluorescence at shorter wavelengths. To meet those challenges, we herein presented the successful development and application of a novel group IIIA ions fluorescent probe, NBD-hnap , in live RAW264.7 cell and zebrafish models, especially the imaging of ocular tumor cell OCM-1 (human choroid melanoma cells). NBD-hnap was synthesized by a simple conjugation of NBD and hnap molecules under suitable conditions. Subsequent experimental analysis and theoretical calculations confirmed that NBD-hnap forms a 1:1 chelate with each of three selected group IIIA ions. Further evaluation proved that NBD-hnap can realize highly sensitive [LODs of 113, 82 and 150 nM for Al(III), Ga(III), and In(III) respectively in aqueous solutions] and highly selective (over a dozen of interfering cations) through an ESIPT-based fluorescent sensing mechanism with strong far-red emission around 640 nm. Those value merits make NBD-hnap superior to other group IIIA ion probes reported before and NBD-hnap is thus expected to find wider and greater applications in the near future.
研究领域:
分析化学
·
生物医学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 11
·5546-5554
·
IF 3.3
Wenwen Yang,Shan-Shan Xu,Yawen Niu,Yanhui Zhang,Jian-Feng Li,Juan Xu
As a member of the ternary sulfides, CdIn2S4 is a visible light responded catalyst with a band gap of 2.2–2.6 eV, which is suitable for solar spectrum. In this study, a simple two-step solvothermal method was used to construct Ni12P5/In(OH)3/CdIn2S4 composite catalysts with type-II and Z-scheme heterojunctions, and there was a synergy between the two heterojunctions. The Ni12P5/In(OH)3/CdIn2S4 composite catalyst formed a donor-mediator-acceptor system for photogenerated electrons, which greatly improved the separation efficiency of the photogenerated carriers. Moreover, the highest hydrogen production activity achieved by the Ni12P5/In(OH)3/CdIn2S4 composites was 5.75 mmol g−1 h−1, which was 21 times the original CdIn2S4.
研究领域:
材料科学
·
催化
·
光催化
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2021
·
IF 3.995
Panpan Xu,Yupeng Wang,Wentao Hao,Li Sun,Ensi Cao,Yongjia Zhang
TiO 2 ceramics co-doped with In and Nb exhibit unusual large dielectric-permittivity phenomena, but their sintering temperature is essentially higher than 1400 °C and the holding time is usually longer than 5 h, which is very uneconomical for industrial production and practical applications. Therefore, to maintain the relatively good dielectric properties of In and Nb co-doped TiO 2 ceramics and reduce the sintering temperature to about 1300 °C, B 2 O 3 , was added as a sintering aid to prepare B 2 O 3 /(In 0.5 Nb 0.5 ) 0.05 Ti 0.95 O 2 ceramics in this paper. The crystalline structures, microstructures, and electrical properties were investigated and discussed. The results showed that the sintering temperature of B 2 O 3 /(In 0.5 Nb 0.5 ) 0.05 Ti 0.95 O 2 ceramics indeed prominently decreased, but their dielectric loss was relatively large, possibly caused by the pores left following B 2 O 3 volatilization.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
·
2020
·
IF 3.31
Rongmei Yu,Furong Yin,Chunying Pu,Haizhen Song,Xiumei Xu,Han Zhang,Wenyu Ji
Although much effort has been made to the cadmium-free quantum dot light emitting diodes (QLEDs), it is still a big challenge to achieve an efficient eco-friendly QLED. Here, an extremely efficient QLED based on Ag–In–Zn–S QDs is constructed with the insertion of an 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene (TPBi) hole-spacing interlayer. The electrical properties of single carrier devices demonstrate the TPBi blocks the hole injection, leading to a more balanced charge injection in the device. Transient electroluminescence measurements confirm that the hole accumulation adjacent QDs is dramatically suppressed after the insertion of TPBi, hence limiting the interactions between excitons and holes. Consequently, the peak current (power) efficiency of 6.0 cd/A (6.5 lm/W) is achieved. To the best of our knowledge, this is the record efficiency for the Ag–In–Zn–S QLEDs reported to date. We anticipate this work will provide a new route for optimizing the performance of Cd-free QLEDs.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2023
·
IF 3.7
Jiuhu Zhao,Huiying Li,Yungang Wang,Rongshu Zhu,Senlin Sun,Jingwen Zhang,Chaolin Li,Mei Hong
Mesoporous In/Hβ-X series catalysts were prepared by desilication method with tetrapropylammonium hydroxide (TPAOH) and indium incorporation for selective catalytic reduction of NO with methane (CH 4 -SCR). The post desilication treatment conditions for preparing In/Hβ-X were optimized. Etching time is the most important desilication parameter influencing the resulting CH 4 -SCR performance of the catalyst. The In/Hβ-3 sample which was etched for 3 h presents the highest NO x conversion, 22% higher than In/H-Beta counterparts using commercial microporous beta. Obvious analysis reveals that besides generating mesopores, controlled desilication can modulate the proportion of InO + active sites and surface oxygen species, allowing more active sites to be exposed.
研究领域:
催化
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）