CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Youzhou He,Shuang Luo,Xueli Hu,Yaling Cheng,Yumin Huang,Shengming Chen,Min Fu,Yiming Jia,Xingyan Liu
The bifunctional photocatalyst CDs@NH 2 -MIL-125(Ti), carbon nanodots (CDs) encapsulated in NH 2 -MIL-125(Ti), was constructed in situ by a simple and convenient low-temperature calcination approach, which exhibited great capacity in NO removal (at air level) and H 2 evolution simultaneously under visible-light irradiation. The NO removal rate of CDs@NH 2 -MIL-125(Ti) (10 mM) reached 53%, which was 28.4% higher than pristine NH 2 -MIL-125(Ti). Moreover, the H 2 production rate was 5820.95 μmol g −1 , which was 5.34 times higher than that of original NH 2 -MIL-125(Ti). The corresponding optical and electrical performances of CDs@NH 2 -MIL-125(Ti) characterized by UV–Vis, UCPL, ESR, and in situ DRIFTS , etc. indicated that the encapsulated CDs uniformly dispersed in the pores of NH 2 -MIL-125(Ti) could improve the visible light utilization via the up-conversion effect and photosensitization, and serve as an electron-receiver to significantly prolong the lifetime of the photogenerated charge carriers, thus enhancing the photocatalytic performance. The results revealed that fabricating CDs with metal-organic frameworks (MOFs) could be an available strategy for us to boost the photocatalytic NO elimination and H 2 evolution activity simultaneously.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2023
·Vol. 170
·期 12
·120504
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IF 3.9
Zhenyu Fu,Yuhan Li,Lirong Huang,Weiya Zhang,Ling Weng
Lithium metal batteries are considered promising contenders for the next generation of high energy density batteries. However, lithium metal anode with inhomogeneous lithium deposition in liquid electrolyte causes the uncontrolled growth of lithium dendrites. Owing to the high dielectric constant, thermal stability and electromechanical stability of polyvinylidene fluoride, we design a novel gel polymer electrolyte consisting of porous polyvinylidene fluoride polymer matrix, liquid electrolyte, ethylene carbonate and MIL-125 (Ti) (Ti8O8(OH)4(BDC)6, BDC = 1,4-benzene dicarboxylate) for facilitating Li+ transfer and alleviating the growth of lithium dendrites. The high dielectric constant environment facilitates the dissociation of Li+, and the porous polymer matrix structure accommodates more Li+ for fast transfer. Ethylene carbonate reduces the crystallinity of the polymer matrix and improves the ionic conductivity. MIL-125 (Ti) nanoparticles with surface area and uniform micropores improve toughness for enhancing mechanical property, and synergistically promote the Li+ transfer for building stable interfacial phase to alleviate the growth of Li dendrites. Therefore, the gel polymer electrolyte has high ionic conductivity of ∼1.50 × 10−3 S cm−1 at 25 °C, and quasi-solid-state Li/LiFePO4 battery has high discharge capacity of 153.5 mAh g−1 after 250 cycles at 25 °C and 0.3 C.
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OPTICAL MATERIALS
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2020
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IF 2.779
Lanqing Ling,Yu Tu,Xuanyu Long,Qianwen Li,Jiabao Gu,Nan Liu,Zequan Li
The emission of organic dye wastewater poses a great threat to the ecological environment. Therefore, it is necessary to prepare environment-friendly photocatalytic materials with high photocatalytic performance to degrade organic dyes. In this work, a new composite photocatalyst SnS 2 /NH 2 -MIL-125 (Ti) was formed by loading the multiphase SnS 2 of quantum dots (QDs) and hexagonal nanodiscs (NDs) on the NH 2 -MIL-125 (Ti) through one-step hydrothermal method , then used it to remove 40 mg/L Rhodamine B (RhB) under visible light . Compared with SnS 2 and NH 2 -MIL-125 (Ti), the photocatalytic degradation activity of the 12 wt% SnS 2 /NH 2 -MIL-125 (Ti) was enhanced by 2.4 and 2.1 times respectively, reaching 90.5%, after 80 min of visible light irradiation. The four times recycling test shows that this photocatalyst has outstanding stability and durability. Through analysis, NH 2 -MIL-125 (Ti) modified SnS 2 can improve visible light absorption, provide more active sites and inhibit photoelectron-hole recombination, thus enhancing photocatalytic activity . Superoxide radical (•O 2 − ) and hole (h + ) were determined to be the key active substances in the process by the reaction substance capture experiment. The photodegradation mechanism of RhB is also investigated and studied in detail. This novel multiphase SnS 2 /NH 2 -MIL-125 (Ti) material provides a new perspective for the design of organic-inorganic composite photocatalysts with excellent performance and improved stability, and has potential application in environmental purification.
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SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Yunlei Zhou,Yue Wang,Shurong Li,Xi Fang,Huanshun Yin,Po Wang,Shiyun Ai
Photoelectrochemical (PEC) immunosensor was designed to detect N 1 -methyladenosine (m 1 A), where BiVO 4 /g-C 3 N 4 heterojunction was employed as photoactive material, polyamidoamine (PAMAM) and 4-carboxyphenylboronic acid (CPBA) were used as m 1 A antibody immobilization matrix, and Ti-based metal-organic framework encapsulated heterostructure of TiO 2 @NH 2 -MIL-125(Ti) was adopted as signal amplification. Due to the interaction between TiO 2 and phosphate, TiO 2 @NH 2 -MIL-125(Ti) was captured after immunoreaction between m 1 A and its antibody, which can further improve the detection sensitivity with increased PEC response. Under optimal experimental conditions, this method presented wide dynamic range (0.05–35 nM) with the low determination limit (16.7 pM, S/N = 3). This detection strategy showed good detection reproducibility, stability and selectivity. This method was applied to assess the effect of antibiotics on m 1 A content in the leaves, stems and roots of rice seedlings.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
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IF 6.361
Shiyu Zhang,Meng Du,Junyan Kuang,Zipeng Xing,Zhenzi Li,Kai Pan,Qi Zhu,Wei Zhou
Mesoporous NH 2 -MIL-125(Ti)@Bi 2 MoO 6 core-shell heterojunctions with surface defects were fabricated through a facile solvothermal method . The mesoporous core-shell structure with a large relative surface area of 87.7 m 2 g −1 and narrow pore size of 8.2 nm extends the photoresponse to the range of visible light due to the narrow band gap of ∼1.89 eV. The visible-light-driven photocatalytic degradation efficiency of highly toxic dichlorophen and trichlorophenol were 93.28 and 92.19%, respectively, and the corresponding rate constants were approximately 8 and 17 times higher than the rates achieved by pristine NH 2 -MIL-125(Ti). The photocatalytic oxygen production rate was increased to 171.3 µmol g −1 . Recycling for several cycles indicates high stability, which is favorable for practical applications. The excellent photocatalytic performance can be ascribed to the formation of the core-shell heterojunctions and to the surface defects that favor charge separation and visible light absorption; the mesoporous structure offers an adequate number of surface active sites and mass transfer. This novel mesoporous core-shell photocatalyst will have potential applications in the environment, and this strategy offers a new insight into fabrication of other high-performance core-shell structure photocatalysts.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
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IF 8.328
Zhiwang Yang,Xueqing Xu,Xixi Liang,Cheng Lei,Yuhan Cui,Wenhua Wu,Yaoxia Yang,Zhe Zhang,Ziqiang Lei
Photocatalytic synthesis using visible light is a desirable chemical process because of its potential to utilize sunlight. A heterostructured MIL-125/Ag/g-C 3 N 4 nanocomposite was implemented as an efficient bifunctional visible-light response catalyst for the photoreduction of nitrocompounds and the oxidation of alcohols. The photocatalyst was prepared via an accessible method and characterized by XRD, SEM, TEM, XPS, FT-IR, N 2 adsorption–desorption isotherm, UV–vis DRS, PL and EIS. The reactive efficiency of the photocatalyst depends on two primary factors, one is the light adsorption of catalysts, Ag nanoparticles (NPs) were photodeposited on the surface of g-C 3 N 4 and MIL-125 to increase visible-light absorption via the surface plasmon resonance. And the other is the separation efficiency of the photogenerated charge carrier. As an electron-conduction bridge in the interface between MIL-125 and g-C 3 N 4 , Ag NPs could facilitate the direct migration of photoinduced electrons from g-C 3 N 4 to MIL-125 and retard the recombination of electron-holes. Therefore, the MIL-125/Ag/g-C 3 N 4 sample shows highest photocatalytic activity compared with MIL-125, g-C 3 N 4 , MIL-125/Ag and MIL-125/g-C 3 N 4 . A corresponding photocatalytic mechanism of these reactions was discussed in detail. Moreover, the photoreduction of nitrocompounds and oxidation of the alcohols with superior conversions and selectivities were obtained, and the catalyst can be recycled four times. It is concluded that MIL-125/Ag/g-C 3 N 4 would be a promising visible light photocatalyst in the field of selective organic transformations.
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CHEMOSPHERE
·
2024
·
IF 8.1
Jun Guo,Jun Hou,Zijun Yang,Jun Xia,Jun Wu,Guoxiang You,Lingzhan Miao
NH 2 -MIL-125(Ti) materials had great potential for photocatalytic applications but had low activity due to exciton effect and narrow absorption range of visible light. The surface oxygen-containing negative functional groups of boron nitride quantum dots (BNQDs) could overcome these defects, but due to the low load capacity, a higher specific surface area of the substrate was usually required. In this paper, a hollow Ti-MOF material was developed by etching technology. The hollow structure formed by tannic acid etching broadened the absorption range of visable light and provided more alternative surfaces for loading BNQDs. The 85.2% of high tetracycline (TC) removal efficiency for the best sample (BNQDs-5@20-Ti-MOF + PMS) was obtained, which was about 56.8 and 1.9 times of the 20-Ti-MOF and BNQDs-5@20-Ti-MOF, respectively. BNQDs-5@20-Ti-MOF + PMS system showed a great TC degradation efficiency in a wide pH range (pH = 5–9). In addition, reaction temperature and the inorganic ions did not show significant inhibition effect for TC removal. Both free radical and non-free radical pathways were involved in the TC degration by BNQDs-5@20-Ti-MOF + PMS system, among which O 2 •− and 1 O 2 played the key roles. Interestingly, multiple 1 O 2 production paths contributed to the high efficiency and stability of BNQDs-5@20-Ti-MOF + PMS system. This study revealed a reasonable combination of Ti-MOF and BNQDs, which provided a new efficient photocatalyst for environmental remediation.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Honglin Qin,Lizhen Qiao,Chen Li,Xiuchao Yao,Bingyan Han
In this work, a novel composite Fe 3 O 4 /NiAl LDH/MIL-125 (Ti) was developed through modifying the Ti-based MOF into magnetic NiAl LDH materials and applied to efficiently extract organophosphorus flame retardants (OPFRs) from water samples. The prepared Fe 3 O 4 /NiAl LDH presented good extraction efficiency for OPFRs, and, electrostatic interaction and π-π interaction also played an important role for the extraction process, except for the selective metal-affinity coordination between the adsorbents and OPFRs. Some key factors influencing the magnetic solid-phase extraction efficiency were explored, including adsorbent amount, ultrasound time, solution pH, salt content, the type of elution solvent and eluent volume. Under the optimal conditions, the coefficients of determination (R 2 ) of the OPFRs were 0.9976–0.9996, and the limits of detection (S/N = 3) and limits of quantification (S/N = 10) were respectively 0.3–1.0 μg·L −1 and 1.0–3.0 μg·L −1 . The developed approach was applied for the extraction and determination of OPFRs in the environmental water samples, and the spiked recoveries ranged from 82.79 % to 111.32 %.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zhiqiang Guo,Xinmiao Wu,Juanjuan Meng,Xinxin Li,Yuan Li,Liangliang Hu
MIL-101(Fe) has received more and more attention in wastewater treatment, and how to further improve its stability and sorption capacity has become a research focus. In this study, metal Mg was used to dope MIL-101(Fe) to construct Mg@MIL-101(Fe) with bimetallic sites, which was then mixed with NH 2 -MIL-125(Ti) to successfully fabricate Mg@MIL-101(Fe)/NH 2 -MIL-125(Ti) (MOM) bis-MIL composites. MOM not only contains a large number of sorption sites but also exhibits excellent stability and reusability, realizing efficient sorption of Pb(II) from aqueous solution. In addition, the sorption performance and mechanism of Pb(II) on MOM were investigated by the characterizations of SEM, BET, TG, XRD, FTIR and XPS, as well as the kinetic and thermodynamic analyses. The sorption of Pb(II) on MOM is in accordance with the Langmuir isothermal model and pseudo-second-order kinetic model. The maximum sorption capacity of Pb(II) on MOM derived from the Langmuir model fitting is 320.941 mg·g −1 . The sorption of Pb(II) on MOM is strongly affected by pH, but not by ionic strength, which indicates that MOM has good resistance to salt interferences. The strong complexation of carboxyl, hydroxyl and amino functional groups with Pb(II) is the main sorption mechanism of Pb(II) on MOM, and electrostatic interaction and ion exchange also contribute to the sorption. In conclusion, MOM has strong practical application prospects in the treatment of Pb(II)-containing wastewater.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Yue Li,Junhao Zhou,Xiaoping He,Youzhou He,Jiajia Jing,Xingyan Liu,Siqi Li,Siping Wei
Under the global dual-carbon goal, photocatalysis technology is being employed as a green technology for NO removal and hydrogen production . However, the application of photocatalysts is often limited by the weak response to visible light and the low separation efficiency of photogenerated carriers. In this paper, we designed a simple and efficient photocatalyst Au@NM-125/PdTCPP for NO removal and hydrogen evolution . By adding PdTCPP molecule with excellent light absorption ability combine with MIL-125-NH 2 (Ti), the introduction of PdTCPP expands the absorption range of visible light. On the other hand, the introduction of Au NPs with surface plasmon resonance effect promotes electron transport between PdTCPP and MIL-125-NH 2 (Ti), thus greatly improving the photocatalytic performance. Compared with the NO removal efficiency of the original NM-125 (22.06 %), the NO removal rate of NM-125/PdTCPP was 63.72 %, while the NO removal rate of Au@NM-125/PdTCPP was the highest, reaching 73.23 %. What’s more, Au@NM-125/PdTCPP also demonstrated excellent hydrogen evolution performance (12.659 mmol/g, in 4 h), with a hydrogen evolution effect 2.14 times that of NM-125/PdTCPP (5.911 mmol/g, in 4 h) and 6.85 times that of the initial material NM-125 (1.848 mmol/g, in 4 h). Based on the results of UV-Vis spectroscopy, Mott-Schottky and XPS spectrum, we proposed a possible photocatalytic mechanism, the suitable band gap value of MIL-125-NH 2 (Ti) and PdTCPP makes them form a Z-scheme heterojunction , where electrons flow from PdTCPP to MIL-125-NH 2 (Ti), and Au NPs acts as an electron bridge to promote more electron transfer, thus improving the photocatalytic performance. It is a practicable strategy to achieve excellent photocatalytic performance by combining metalloporphyrin molecules as semiconductors directly with MOFs to form heterojunctions and adding Au NPs as electronic bridges, which is also valuable for environmental remediation and energy production.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122692
·
IF 7.5
Huanggen Yang,Shulun Yin,Pei Zhang,Qi Zheng,Faisal Alresheedi,Imran Shakir,Saleem Raza,Duofu Li,Yan Sui
The energy crisis calls for eco-friendly alternatives, and hydrogen production presents a viable solution. As a clean energy source, hydrogen can be produced from water using renewable power, decreasing dependence on fossil fuels and substantially cutting greenhouse gas emissions paving the way for a greener future. This work involves the fabrication of Ti 3 C 2 T x and NH 2 -MIL-125(Ti) by hydrothermal procedures. Ti 3 C 2 T x material served as the substrate for the immobilization of NH 2 -MIL-125(Ti), which were then incorporated into sodium alginate to generate (Ti 3 C 2 T x @NH 2 -MIL-125(Ti)-SA). The electrocatalytic efficacy of Ti 3 C 2 T x @NH 2 -MIL-125(Ti)-SA was evaluated for the hydrogen evolution reaction (HER) under alkaline factors using a 1 M KOH electrolyte. The material demonstrated exceptional capacitance, impressive rate capability, and sustained stability during 1000 cycles over a 24 and 48 h. The Ti₃C₂Tₓ@NH₂-MIL-125(Ti)-SA composite exhibits excellent HER catalytic activity in alkaline media, delivering a low overpotential of 14 mV at 10 mA cm⁻² and a Tafel slope of 56.4 mV dec⁻¹ . Although the benchmark Pt/C catalyst shows slightly superior performance (12 mV, 41.1 mV dec⁻¹), the developed composite demonstrates comparable activity, along with advantages of structural stability and cost-effectiveness compared to noble metal-based catalysts. Overall, Ti 3 C 2 T x @NH 2 -MIL-125(Ti)-SA demonstrates excellent electrode performance in alkaline conditions, as compared with pristine Ti 3 C 2 T x and NH 2 -MIL-125(Ti), which marked by remarkable stability, low Tafel slope values, and minimized overpotentials, underscoring its significant promise for efficient water splitting applications.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haopeng Jiang,Xiaohui Yu,Jinhe Li,Lele Wang,Weikang Wang,Chunxia Wu,Liyong Tang,Qinqin Liu
Herein, a NH 2 -MIL-125(Ti)@Ag@AgCl (NM@Ag@AgCl) stacked core–shell heterojunction with Z-scheme carrier transfer mechanism was developed to fulfil the goal of synchronous reactions of CO 2 reduction and H 2 O oxidation. In detail, the NM@Ag@AgCl was obtained by in-situ loading the AgCl as the shell-inorganic semiconductor on the octahedral NM as the core-organic semiconductor, followed by in-situ transforming part of the AgCl shell into the plasmonic Ag nanoparticles using a photo-reduction method. As a result, the interface effects of core–shell architecture majorized by the Ag electronic mediator can favor the transmission of photogenerated carriers and reduce electron transport resistance; while the plasmonic Ag mediated Z-scheme mode with a giant internal electronic field provided a strong driving force to recombine the carriers with weak redox ability, reserving the carrier with strong redox ability on the NH 2 -MIL-125-core and AgCl-shell for the simultaneous reactions. The CO and H 2 O 2 yields of the optimal NM@Ag@AgCl were 6.02 and 5.43 μmol⋅g −1 ⋅h −1 , which were 3.31 and 4.02 times that of the NM, respectively. This study furnishes a novel thread for the design of core–shell organic–inorganic heterojunction with high interfacial charge transfer for realizing the simultaneous reactions.
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