APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Fangxu Dai,Ying Wang,Xinran Zhou,Ruiyang Zhao,Jishu Han,Lei Wang
An efficient visible light responsive ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) nanocomposite was prepared for photocatalytic hydrogen production application. Under visible light irradiation, the ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) photocatalyst displayed improved photocatalytic performance and the hydrogen production rate reached to 161724.8 μmol/g in 6 h. The nanocomposite with large specific surface area and mesoporous structure increased the light absorption, improved the electrons transfer and suppressed the recombination of photogenerated electron-hole pairs, thus exhibiting efficient photocatalytic hydrogen production performance. The controllable synthesis of ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) nanocomposite as a high-efficiency photocatalyst would have broad prospect for water splitting hydrogen production application.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Chen Li,Chuncai Zhou,David French,Ian T. Graham,Zixuan Wang,Yunfei Li,Feng Wang,Guijian Liu
As strategic emerging industries represented by clean energy technologies develop rapidly, gallium (Ga), one of the critical elements due to its use in these technologies and limited supply, has attracted worldwide attention. The discovery of appropriate materials to adsorb Ga is crucial for improving the utilization of Ga resources. With the goal to recover Ga ions more efficiently and selectively, carbon nanotubes (CNTs) and amino-functionalized MIL-53 series metal–organic skeletons were hydrothermally synthesized into CNT/NH2-MIL-53(Fe) composite adsorbents. The composite's morphology, structure, chemistry and other physicochemical features were characterized, and the adsorption conditions including pH, initial Ga concentration, along with adsorbent dosage were optimized. The outcomes suggest that 2-CNT/NH2-MIL-53(Fe) performs better than the unmodified material in adsorption, and the theoretical maximum adsorption amount of Ga is 1483.8 mg g−1. The adsorption exhibited a single layer chemisorption with an endothermic spontaneous reaction. The adsorption mechanism for Ga onto 2-CNT/NH2-MIL-53(Fe) was mainly via ion exchange and chelation, accompanied by hydrogen bond interaction. The outstanding adsorption capacity and reproducibility using CNT/NH2-MIL-53(Fe) composites provide a novel method for adsorbing Ga from aqueous solutions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 17
·8334-8346
·
IF 3.3
Peifu Sun,Xiao Zhang,Zhiren Guo,Xinyue Liu,Yuanming Lan,Dongxiang Zhang,Hansheng Li,Jinying Li,Helei Liu,Xiyan Xu
The excessive discharge of isothiazolinone bacteriostatic agent-containing wastewater has posed serious threats to human health and environmental safety. As 1,2-benzisothiazolin-3-one (BIT) is one of the most commonly used isothiazolinones, its effective degradation is necessary and urgent. In the current study, a NH2-MIL-53(Fe)-based adsorptive photo-Fenton-like system was constructed for efficiently adsorbing and photodegrading BIT under solar light. The equilibrium BIT adsorption capacity Qe of NH2-MIL-53(Fe) reached 1140.89 mg g−1. The adsorptive photo-Fenton-like system has achieved more than 90% removal of BIT using NH2-MIL-53(Fe) in the presence of H2O2 under solar light irradiation, and the band gap of NH2-MIL-53(Fe) was calculated by UV-Vis analysis to be 2.10 eV. The influences of pH, dosage of photocatalysts and H2O2 were also assessed. It was found that H2O2 reduced the recombination of electron–hole pairs, and the radical quenching experiments and EPR testing result confirmed that h+, ˙OH and O2˙− played a crucial role in the photocatalytic process. This study supports the application of Fe-based MOF materials for simultaneous adsorption and the solar light photocatalytic degradation of BIT.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wen Gao,Fangyuan Wang,Meilin Ou,Qianqian Wu,Lei Wang,Haonan Zhu,Yuanyuan Li,Ning Kong,Jianping Qiu,Shanshan Hu,Shuang Song
The presence of elevated levels of norfloxacin (NOR) in the aquatic environment presents a serious risk to both human health and environmental organisms due to its extremely toxic and persistent characteristics. Herein, a series of Fe/Ti bimetallic composites (NH 2 -MIL-53(Fe/Ti)) were prepared using a one-step hydrothermal method to assess their capability for NOR degradation and investigate degradation mechanisms. It was observed that the well-organized nanosheets interconnected to form chrysanthemum clusters contained a significant number of exposed edges and open pores, which facilitated the enrichment of NOR. Notably, the optimum NH 2 -MIL-53(Fe/Ti) (1.5:1) demonstrated excellent degradation performance for NOR under visible light, owing to an electronic interaction between Fe 3+ and Ti 4+ metal centers. Efficient NOR degradation by NH 2 -MIL-53(Fe/Ti) (1.5:1) was achieved at 84.6% after 120 min of irradiation. Furthermore, the NH 2 -MIL-53(Fe/Ti) (1.5:1) maintained excellent reusability and stability even after five cycles tests. Active species trapping experiments confirmed that the pivotal role of •O 2 − and h + in photodegradation of NOR pollutants. A plausible photocatalytic mechanism was suggested according to various performance characterization and experimental results. Defluorination and ring opening were the main degradation pathways. This work advanced our understanding of photogenerated carriers transfer and energy conversion in bimetallic MOFs . Additionally, a novel strategy was presented for visible light catalytic degradation of NOR, which were highly relevant for the field of environmental treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2021
·Vol. 7
·期 1
·84-100
·
IF 4.239
Jungang Yi,Xianghui Wu,Huadong Wu,Jia Guo,Kun Wu,Linfeng Zhang
With the aim of solving the increasingly serious problem of environmental pollution and the energy crisis, in this work a novel NH2-MIL-53(Fe)/AgSCN (NMFA) composite photocatalyst was successfully prepared through a one-step chemical precipitation method. The prepared composites demonstrate an excellent photocatalytic performance for ciprofloxacin (CIP) and rhodamine B (RhB) degradation under visible-light irradiation. Within 60 min, the degradation rate for CIP and RhB reached 90% and 100%, respectively, which was 1.84/3.33 times and 1.79/2.04 times greater than that of the single NH2-MIL-53(Fe) and AgSCN samples. Furthermore, the H2 production rate of the NMFA-5 composite was 4742 μmol g−1 h−1, which was 5.25 and 17.37 times greater than that of the pure samples. Owing to the combination of NH2-MIL-53(Fe) and AgSCN, the separation and transmission efficiency of the photon-generated carriers in the composites was improved, which was demonstrated using optical characterization and a series of electrochemical characterization techniques. In addition, a possible mechanism for the excellent photocatalytic performance of the NMFA composites is discussed. The work in this paper may provide a technical reference for the application of silver modified metal organic frameworks (MOFs)-based composite photocatalysts for the treatment of environmental remediation.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Hangxi Liu,Haorong Sun,Ming Fang,Yifeng Zhang,Mingguang Kong,Zhimin Lv,Xiaoli Tan
The evaluation of the concentration of Pb(II) in solution has great significance in avoiding harm to ecology health. In this work, NH 2 -MIL-53(Fe) modified ITO glass (NH 2 -MIL-53(Fe)@ITO) was utilized as an electrochemical sensor for the detection of Pb(II) in solutions. FTIR and XPS investigation disclosed that the plentiful surface –NH group on the NH 2 -MIL-53(Fe) should be responsible for the highly efficient and selective detection abilities of Pb(II) due to the capture and conductivity abilities. The NH 2 -MIL-53(Fe) was prepared by a solvothermal technique and electrophoresed on the surface of ITO glass . A square wave voltammetry (SWV) method is employed for the sensitive determination of Pb(II). The factors of the detection condition such as the pH and ion interference are also studied. The sensitivity of 16.072 μA μM −1 cm −2 in the linear range of 2–4 μM and 54.143 μA μM −1 cm −2 in the linear range of 5–17 μM, and the limit of detection (LOD) of 0.1 μM are acquired. The repeatability and reproducibility are also studied. EIS and Tafel curves are utilized to investigate the effect of temperatures on the properties of the NH 2 -MIL-53. This work presents a facile strategy for the preparation of NH 2 -MIL-53(Fe)@ITO electrochemical sensor via electrolysis, which enhances the sensitivity toward Pb(II) and shows great application potential.
研究领域:
环境科学
·
分析化学
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Meng Xia,Longqi Li,Xiaocong Wang,Kaihao Xu,Shuai Zhang,Chengxue Zhang
During CO2/HCO3– reduction with renewable biomass, achieving high-efficiency production of the target products is vital but challenging. In this study, an NH2– functional-group-modified MIL-53(Fe) catalyst was synthesized using a facile and efficient method. Under the action of the NH2-MIL-53(Fe) catalyst, a clear synergistic effect was exhibited on the transformation of glucose and NaHCO3 into formic acid with a high yield of 50% at a low reaction temperature (190 °C) via a three-pronged route, which mainly involved the decomposition of intermediates of glucose to gradually reduce NaHCO3 to formic acid under hydrothermal conditions. An in-depth analysis of the catalytic mechanism and density functional theory calculations demonstrated that the increased alkalinity of active sites by the NH2– functional group incorporation into the catalytic system enhanced the crucial reaction steps and reduced the activation energy of the crucial reactions, including glucose isomerization, aldehyde intermediate retro-aldol condensation, and redox of aldehyde compounds and NaHCO3 to formic acid, thereby promoting the generation of target products and suppressing side products. This study addresses the challenge of reducing NaHCO3 from renewable biomass to commercial formic acid by constructing multifunctional active sites, thus providing a new strategy for achieving carbon cycling.
研究领域:
化学工程
·
催化科学
·
可再生资源转化
✓ 已验证
产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2022
·
IF 3.118
Yan Wang,Wenpei Feng,Jinjun Li,Zhixiong You
Metal-organic frameworks (MOFs) have shown attractive advantages in adsorbing dyes from wastewater. However, their complex synthesis processes and poor stability have limited their applications. Herein, we proposed a novel two-step route to prepare NH 2 -MIL-53(Fe) at room temperature and investigated its dye adsorption performance. The prepared NH 2 -MIL-53(Fe) displayed high water stability in the pH range of 3–11. Moreover, NH 2 -MIL-53(Fe) showed a significantly higher adsorption capacity and faster adsorption rate towards congo red (CR) than the other selected dyes, with more than 99 % of CR being removed by NH 2 -MIL-53(Fe) within 20 min. The maximum adsorption capacity of NH 2 -MIL-53(Fe) for CR was 1877 mg·g −1 . Besides, the removal efficiency of CR could maintain higher than 80 % within the tested pH range (3 to 11), and removal efficiency was consistently higher than 95 % at different NaCl concentrations (0 to 0.4 M). The dynamic CR adsorption process matched the pseudo-second-order kinetic model and fitted well using the Langmuir model, suggesting that the adsorption of CR onto NH 2 -MIL-53(Fe) was a monomolecular-layer chemical adsorption process. More importantly, NH 2 -MIL-53(Fe) showed high removal efficiency and good reusability towards CR in both synthetic and model wastewater. Mechanistic studies suggested that the removal of CR was attributed to the synergistic effects of the π-π stacking interactions, hydrogen bonds and electrostatic interactions between CR and NH 2 -MIL-53(Fe). Overall, the present study provides a novel strategy for the facile synthesis of NH 2 -MIL-53(Fe), highlights the excellent adsorption performance and reusability towards CR and underlies the adsorption mechanisms involved.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Ziheng Zhao,Chunfan Xu,Liang Yu,Huimin Liu,Ru Zhou,Min Hao,Chi-Min Shu,Juncheng Jiang
High-density polyethylene (HDPE) composites are made by melt blending HDPE with MIL-53(Fe), amino-functionalized NH 2 -MIL-53(Fe), aluminum diethyl hypophosphite (ADP), and expandable graphite (EG). The experimental disclosed showed that the aminated NH 2 -MIL-53(Fe) could improve residual carbon quality and exert a better flame retardant effect than MIL-53(Fe). When 25 wt% of EG/ADP/NH 2 -MIL-53(Fe) was added and the ratio of EG to ADP/ NH 2 -MIL-53(Fe) was 1:1, HDPE/EG/ADP/NH 2 -MIL-53(Fe) composites could achieve a limiting oxygen index of 31.1 %, which passed UL-94 testing and was rated V-0. This results in a considerable improvement in flame retardant efficiency as the peak heat release rate was lowered by 83.4 % and the total heat release was reduced by 35.8 % when compared to the pure HDPE material. Therefore, NH 2 -MIL-53(Fe)/ADP/EG synergistic flame retardancy can lead to high flame retardancy efficiency in HDPE. This provided a new potential direction for the preparation of highly efficient flame retardants.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Xiangyu Wang,Wei Zhang,Xu Zhang,Lang Ran,Quanlin Zhao,Binze Zou,Lincheng Zhou,Zhengfang Ye
Chloromethyl styrene-divinylbenzene (PS–Cl) resin was usually chemically modified for the adsorption of heavy metal ions in wastewater. However, this work will introduce a new application of resin for catalytic degradation of antibiotics. The core-shell PS-NH 2 @MIL-53(Fe) catalyst was fabricated by simple two-step route including chemical synthesis and step-by-step self-assembly strategy. The catalysts exhibited excellent catalytic activity toward the degradation of tetracycline (TC) in the presence of H 2 O 2 , with a degradation efficiency and degradation rate constant ( k ) of 94.15% and 0.05643 min −1 within initial 20 min, respectively. Moreover, the mineralization and stability of PS-NH 2 @MIL-53(Fe) both showed excellent performance. The advantage of PS-NH 2 @MIL-53(Fe) is that the degradation efficiency of TC could be modulated by the number of self-assembly. Additionally, we utilized the Yellow River water to explore the effect of the catalyst for TC removal in the actual wastewater treatment . Meanwhile, several possible catalytic degradation pathways were analyzed on the basis of using HPLC-MS to detect the intermediates generated in the process of catalytic degradation, and a potential catalytic degradation mechanism was proposed. In brief, the new application of amination resin modified by MIL-53(Fe) in catalytic degradation of TC shows promising prospect, especially in the field of environmental remediation.
研究领域:
环境科学
·
催化化学
·
废水处理
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Jiami Ma,Zhixin Hu,Weihong Guo,Cheng Ni,Pan Li,Bosheng Chen,Songhua Chen,Jinlong Wang,Yanbing Guo
Ground−level ozone (O 3 ) pollution poses a significant threat to both ecosystem sustainability and human health. The catalytic decomposition of O 3 presents as a promising technology to address the issues of O 3 pollution. This study undertook the synthesis of various functionalized metal−organic framework (MOF) catalysts ( i.e., X-MIL-53(Fe) (X = H, NH 2 , NO 3 )) to delve into the influence of ligand functional groups on skeletal structure and catalytic efficacy, particularly focusing on unraveling the mechanism of O 3 catalytic decomposition under humid conditions. NH 2 -MIL-53(Fe) catalyst achieved complete O 3 decomposition under ambient temperature and high humidity conditions (RH=75 %), exhibiting a reaction rates (mol·m −2 ·s −1 ) 129 and 10.5 times greater than that of MIL-53(Fe) and NO 2 -MIL-53(Fe). The NH 2 group promotes electron flow within the backbone towards the hydroxyl group (OH) linked to Fe atom. In humid O 3 , H 2 O molecules augment the interaction between O 3 and NH 2 -MIL-53(Fe), and OH is converted to·O 2 − after deprotonation, promoting O 3 decomposition. Additionally, leveraging three−dimensional (3D) printing technology, a monolithic catalyst for O 3 decomposition was prepared for application. This study not only advances understanding of the mechanisms underlying O 3 decomposition but also offers practical solutions for addressing O 3 pollution at humid conditions.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2024
·
IF 5.4
Le Wang,Mengyue Zhang,Manyu Zhang,Zhongke Sun,Zifu Ni,Yanli Yin,Dapeng Wu,Qipeng Yuan
The multifunctional composites Fe 3 O 4 /GO/NH 2 -MIL-53(Fe) with excellent adsorption-degradation performance was prepared for the removal of Aflatoxin B 1 (AFB 1 ). The adsorption function of Fe 3 O 4 /GO/NH 2 -MIL-53(Fe) was based on the large specific surface area and abundant adsorption sites. The degradation function of Fe 3 O 4 /GO/NH 2 -MIL-53(Fe) was based on the activation of H 2 O 2 by the catalytic active center formed by the coordination of metal ions and oxygen-containing groups in the system, resulting in hydroxyl radicals (·OH), superoxide anion radicals (O 2- ) and singlet oxygen ( 1 O 2 ). The adsorption of nanozyme accelerated the degradation reaction process, and the adsorption site was further exposed as the degradation process progressed. The synergistic effect realized the efficient removal of AFB 1 . Construction of Fe 3 O 4 /GO/NH 2 -MIL-53(Fe) as the carbon-doped iron-based nanozyme provided novel approaches of the removal for risks control of AFB 1 . Accompanied by the AFB 1 adsorption, the advanced oxidation of nanozyme to the AFB 1 degradation provided a promising way for the synergistic removal of AFB 1 .
研究领域:
食品安全
·
生物化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）