CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Wen Cao,Yuhang Yuan,Cao Yang,Shichuan Wu,Jianhua Cheng
For the first time, visible-light-driven g-C 3 N 4 /MIL-68(In)-NH 2 heterojunction composites with high photocatalytic activity were prepared for the degradation of ibuprofen (IBP) using an in-situ solvothermal synthesis method assisted with ultrasonication. The composites achieved intensive visible-light absorption, enhanced separation efficiency of photogenerated carriers, and high adsorption capacity, thus achieving excellent photocatalytic degradation for IBP. Among all the composites, 10 wt% g-C 3 N 4 /MIL-68(In)-NH 2 exhibited the maximum photocatalytic rate (0.01739 min −1 ), 19.28 and 2.00 times higher than those of g-C 3 N 4 and MIL-68(In)-NH 2 , respectively. Moreover, the pH, ibuprofen concentration, and catalyst dosages played important roles both in photodegradation and adsorption. In addition, the photocatalytic mechanism was also elucidated, demonstrating that h + was the main reactive species, followed by OH and O 2 − radicals, responsible for the degradation of IBP. Finally, seven aromatic intermediates of IBP were identified, and five possible degradation pathways were proposed, mainly involving hydroxylation, aldehyde oxidation, decarboxylation, and dehydrogenization reactions.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Ziyi Zhang,Huiqing Dong,Dongxu Zhou,Kexin Tang,Yidi Ma,Tao Han,Jianqiu Lei,Shoushuang Huang,Xiaodong Zhang,Liang Tang,Ning Liu
Photocatalytic CO 2 reduction is a promising strategy to address both environmental issues and energy crisis. Defect engineering offers great potential for improving the photocatalytic performance. Herein, we report an innovative approach to introduce defects in MIL-68(In) via electron beam irradiation for the photoreduction of CO 2 into CH 4 . The irradiated X-MIL-68(In) (X mean the irradiation dose) retained the crystal structure and morphology of pristine MIL-68(In), while generating novel organic framework defects. These defects significantly improved the CO 2 photoreduction activity, with 300-MIL-68(In) achieving the highest CH 4 rate of 87.5 μmol g −1 h −1 and a CH 4 selectivity of 74.8 %. Comprehensive ex situ and in situ characterizations, combined with DFT calculations, demonstrated that defects formation in 300-MIL-68(In) accelerated the separation and transfer of photoexcited carriers, thereby driving its superior photocatalytic performance. Furthermore, In situ DRIFTS along with DFT calculations confirmed that ⁎ COOH, ⁎ CHO and ⁎ CH 2 O were key intermediates during CO 2 reduction process. This work highlights electron beam irradiation as an effective strategy for defect engineering, offering new opportunities for tuning the performance of photocatalysts.
研究领域:
材料科学
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环境科学
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纳米技术
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催化
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物理化学
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DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
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2019
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IF 9.518
Xue Zhang,Tao Yan,Tingting Wu,Yixuan Feng,Meng Sun,Liangguo Yan,Bin Du,Qin Wei
It is essential to develop a highly efficient detection platform for tetracycline (Tc). Herein, based on well-designed hierarchical MIL-68(In)-NH 2 /MWCNT/CdS composites as a highly efficient transducer, a label-free visible light driven photoelectrochemical (PEC) aptasensor was systematically fabricated. Characterization results indicate that the forming of MIL-68(In)-NH 2 /CdS heterojunction remarkable facilitated the transfer and inhibited the recombination of charge carriers. Moreover, the transfer properties of multiwalled carbon nanotubes (MWCNTs) further improved the photoelectric conversion efficiency by adjusting electron transport routes. The aptamer as a biorecognition unit was grafted on the modified electrode by chemical bonding effect, and Tc molecules could be captured through the specific interaction of aptamer and Tc in solution. The concentration of Tc was detected by observing the fluctuation of photocurrent signals. Under optimized conditions, the proposed aptasensor showed the broad linear range from 0.1 nmol L −1 to 1 μmol L −1 with a low detection limit (LOD) of 0.015 nmol L −1 . Furthermore, the high sensitivity, excellent reproducibility and favorable stability of the PEC sensing platform indicated the potential applications for antibiotic residues detecting in environmental media.
研究领域:
分析化学
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环境科学
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材料科学
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生物传感器
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DOI
PubMed
高影响因子
ACS Catalysis
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2020
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IF 12.35
Zhongjie Cai,Jiajun Dai,Wen Li,Kok Bing Tan,Zhongliang Huang,Guowu Zhan,Jiale Huang,Qingbiao Li
Utilization of CO2 and its conversion to value-added chemicals are highly desirable to alleviate the environmental concerns caused by the massive anthropogenic CO2 emission. Although In2O3/Pd have been employed as efficient catalysts for hydrogenation of CO2 to methanol, the electronic effects by strong metal–support interaction (SMSI) between Pd and In2O3 are poorly understood, which is greatly affected by the morphology of In2O3. Herein, we use MIL-68(In) nanorod as a morphological template for the synthesis of hollow In2O3 nanotubes (h-In2O3) and the preparation of supported Pd catalysts for CO2 hydrogenation to methanol. Interestingly, loading Pd on h-In2O3 showed a much higher performance than In2O3 with other morphologies, which exhibited almost unchanged CO2 conversion of 10.5%, methanol selectively of 72.4%, and methanol space-time yield of 0.53 gMeOH h–1 gcat–1 over 100 h on stream at 3 MPa and 295 °C. After in-depth characterizations, we found that the different electronic properties of Pd species on In2O3 can be finely tuned by diverse synthetic conditions, which were responsible for high activity and stability. The molar fraction of Pd2+ species in the h-In2O3/Pd catalyst reached 67.6%, 3.2 times that of the In2O3@Pd catalyst (21.3%), due to the different surface chemistry of In2O3. Density function theory results indicated that the Pd donated more electrons to the curved In2O3 (222) surface than the pristine surface, and Pd2+ was critical to facilitate H2 adsorption and formation of the surface oxygen vacancy. This work demonstrates that controlling the morphology of In2O3 can modify both the Pd electronic property and SMSI between Pd and In2O3, which are the origins of the high catalytic performance.
研究领域:
化学
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材料科学
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环境科学
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催化
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Guojun Li,Zheng Lian,Qiuqiu Lyu,Chenyu Zhu,Zhinian Liu,Shule Zhang,Qin Zhong
The efficiency of photocatalytic Nitric Oxide(NO) oxidation is limited by the lack of oxygen(O 2 ) active sites and poor charge carrier separation. To address this challenge, we developed a molecular Cobalt Phthalocyanine modified MIL-68(In)–NH 2 photocatalyst with a robust Built-in electric field(BIEF). In the 2 % CoPc-MIN sample, the BIEF strength is increased by 3.54 times and 5.83 times compared to pristine CoPc and MIL-68(In)–NH 2 , respectively. This BIEF facilitates the efficient S-scheme charge transfer, thereby enhancing photogenerated carrier separation. Additionally, the Co-N4(II) sites in CoPc can effectively trap the separated photoexcited electrons in the S-scheme system. In addition, the Co-N4(II) sites can also serve as active sites for O 2 adsorption and activation, promoting the generation of superoxide radical ( O 2 – ), thereby driving the direct conversion of NO to nitrate(NO 3 – ). Consequently, the 2 % CoPc-MIN sample exhibits a remarkable photocatalytic NO removal efficiency of 79.37 % while effectively suppressing the formation of harmful by-product nitrogen dioxide(NO 2 ) to below 3.5 ppb. This study provides a feasible strategy for designing high-efficiency O 2 activation photocatalysts for NO oxidation.
研究领域:
环境科学
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材料科学
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光催化
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Yue Wang,Wenjun Zhang,Yanjun Zhang,Meng Chen
Metal-organic frameworks (MOFs), with tunable morphologies and porous architectures, show great potential in photocatalysis. A variety of MOFs can be synthesized by changing the types of metal ions and organic ligands. However, fewer studies have explored the influence of the metal-to-ligand molar ratio on the catalytic performance of the resulting MOF-related products. In this work, capsule-shaped NH 2 -MIL-68(In)/InOOH composites were synthesized by adjusting molar ratios of In(NO 3 ) 3 to 2-aminoterephthalic acid. Time-dependent characterization revealed sequential crystallization: rod-shaped NH 2 -MIL-68(In) initially formed in the solution, followed by the in-situ growth of InOOH nanowires on its surfaces via excess indium ions, ultimately constructing a Z-scheme heterojunction. The optimized NM/InOOH (8:1) composite exhibited a larger specific surface area and extended light absorption. The Z-scheme configuration significantly promoted charge carrier separation efficiency while maintaining strong redox potentials of the photoinduced holes and electrons, thereby resulting in 5–8-fold improvement in degradation rates for four dyes (AOII, RhB, MB, and Rh6G), highlighting its broad photocatalytic applicability.
研究领域:
材料科学
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纳米技术
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环境科学
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光催化
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无机化学
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DOI
高影响因子
RSC Advances
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2021
·Vol. 11
·期 33
·20439-20445
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IF 3.361
Jinhua Luo,Liping Jiang,Guihua Ruan,Chengyong Li,Fuyou Du
In this work, a metal–organic framework MIL-68(In)–NH2 incorporated high internal phase emulsion polymeric monolith (MIL-68(In)–NH2/polyHIPE) was prepared and applied as a solid phase extraction adsorbent for the extraction and detection of trace triazine herbicides in environmental water samples by coupling with HPLC-UV detection. The fabricated material showed good adsorption for simazine, prometryn, and prometon in water samples because of π–π interactions and hydrogen bonding interactions. Under optimal conditions, the maximum adsorption capacity of simazine, prometon and prometryn was 800 μg g−1, 800 μg g−1 and 6.01 mg g−1, respectively. The linearities were 10–800 ng mL−1 for simazine, prometon and prometryn. The limits of detection were 31–97 ng L−1, and the recoveries were 85.6–118.2% at four spiked levels with relative standard deviations lower than 5.0%. The method has a high sensitivity for the determination of three triazine herbicides in environmental water samples.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2023
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IF 3.3
Dongping Huang,Peng Yong,Shuifa Shen
The sea urchin-like In 2 O 3 material was successfully synthesized through a simple hydrothermal method . Furthermore, the material underwent surface decoration without adding extra indium ions , resulting in the formation of a thin MIL-68(In) layer on the surface of In 2 O 3 . The obtained In 2 O 3 @MIL-68(In) retains the sea urchin-like morphology while acquiring an additional porous structure. Compared to pure In 2 O 3 , the composite exhibits a significant increase in specific surface area, leading to enhanced gas sensitivity. Notably, it demonstrates exceptional sensitivity towards formaldehyde gas, with a response of 18 at 100 ppm at 300 °C, up to six times more than pure In 2 O 3 . Moreover, In 2 O 3 @MIL-68(In) showcases remarkable selectivity and stability. These findings suggest that surface-modified MOF can enhance gas-sensitive properties.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2021
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IF 8.067
Feihu Mu,Benlin Dai,Wei Zhao,Shijian Zhou,Haibao Huang,Gang Yang,Dehua Xia,Yan Kong,Dennis Y.C. Leung
To boost the visible light catalytic performance of typical metal-organic frameworks (MOFs) materials (MIL-68(In)-NH 2 ), a novel stable Z-scheme Ag/Ag 3 PO 4 /MIL-68(In)-NH 2 plasmonic photocatalyst was constructed by electrostatic attraction, co-precipitation reaction, and in-situ photoreduction reaction methods for the first time. The photocatalytic activities of the photocatalysts are systematically explored by the photocatalytic degradation of bisphenol A (BPA) and reduction of Cr(VI) under visible light. Ag/Ag 3 PO 4 /MIL-68(In)-NH 2 displays the best photocatalytic performance among the as-prepared photocatalysts. The rate constant of BPA degradation on Ag/Ag 3 PO 4 /MIL-68(In)-NH 2 is 0.09655 min −1 , which is better than many reported photocatalytic materials. It also achieved a maximum rate constant of 0.02074 min −1 for Cr(VI) reduction. The boosted photocatalytic performance is due to the improved absorption caused by localized surface plasmon resonance (LSPR), effective interface charge transfer and separation, and more reactive sites provided by the large specific surface area. Besides, the photocatalytic degradation pathway of BPA is concluded according to GC-MS analysis. Finally, a more reasonable Z -scheme mechanism is speculated and verified through a series of characterizations and simulations, such as time-resolved photoluminescence spectroscopy (TRPL), electron spin resonance (ESR), and finite difference time domain (FDTD) method.
研究领域:
材料科学
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环境科学
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化学
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光催化
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产品关联
DOI
高影响因子
CRYSTENGCOMM
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2025
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IF 2.6
Yuting Luo,Yiwei Sun,Haoxiang Wang,yuyang He,Mengqi Lu,Ruoyu Wang,Dongpo Xu
Due to the wide application of tetracycline (TC), there will be residues in human daily food. It is important to develop sensitive and rapid detection methods for TC in food. In this study, a rod-like NH2-MIL-68 (In) material was developed as a DNA probe binding site for rapid detection of TC. The aptamer and NH2-MIL-68 (In) were tightly bound by glutaraldehyde. After the addition of TC, the aptamer specifically adsorbs TC in the test sample, resulting in increased impedance on the electrode and decreased electrical signal. Under optimized conditions, the sensor had a wide detection range (0.001-100 μM) and a low detection limit (0.36 nM). In addition, the NH2-MIL-68 (In)@Apta sensor was successfully applied to TC residues in milk samples with recoveries of 84.33 % -117.22 %. The results showed that our work can provide a new strategy for the direct detection of TC in food samples.
研究领域:
食品科学
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分析化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127509
·
IF 4.386
Rui Kuang,Ning Deng,Fuying Dong,Yongling Ding,Xuan Kuang
Electrochemical enantiorecognition of Tryptophan (Trp) isomers using Cys@In2S3/GCE prepared by two steps of sulfidation and chiralization from MIL-68(In) is reported. The Cys@In2S3/GCE electrode shows highly selective, sensitive and quantitative analysis towards Trp enantiomers. This proposed chiral sensors could be considered for practical applications in the field of Trp related medical recognition.
研究领域:
生物化学
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分析化学
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材料科学
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DOI
高影响因子
Nano Research
·
2017
·Vol. 10
·期 10
·3543-3556
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IF 7.354
Pi Yunhong,Li Xiyi,Xia Qibin,Wu Junliang,Li Zhong,Li Yingwei,Xiao Jing
Efficient separation and transfer of photogenerated electron/hole as well as enhanced visible light absorption play essential roles in photocatalytic reactions. To promote the photocatalytic reduction of Cr(VI), a toxic heavy metal ion, multiwalled carbon nanotube (MWCNT) was introduced as an electron acceptor into NH 2 -MIL-68(In). This led to the growth of a willow leaf-like metal-organic framework (MOF) on an MWCNT backbone forming MWCNT/NH 2 -MIL-68(In) (PL-1), which showed a highly efficient transfer of photogenerated carriers. Moreover, MWCNT incorporation introduced more mesopores for Cr(VI) diffusion and enhanced the visible light adsorption without lowering the conduction band position. As a result, the photocatalytic kinetic constant of PL-1 was found to be almost three times higher than that of the parent NH 2 -MIL-68(In). Thus, growing MOFs on MWCNTs provides a facile and promising solution for effective remediation of environmental pollution by utilizing solar energy. This work provides the first example of using MWCNT/MOF composites for photocatalytic reactions.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）