APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Ruiui Hao,Kaijia Zhang,Guohong Wang
Developing a low-cost, stable but efficient heterojunction photocatalyst is very crucial and challenging. A multivalent TiO 2 @Cu 3 (BTC) 2 heterojunction photocatalyst with active copper center has been prepared by a simple solvothermal method. In the photocatalytic process, photogenerated electrons produced by TiO 2 are transferred to the copper center in Cu 3 (BTC) 2 , partially reducing Cu 2+ and forming a highly active Cu 2+ /Cu + mixed center. This electron transfer path effectively increases the carrier density and prolongs the lifetime of the photogenerated charge. Under the optimal composite ratio, the hydrogen production activity of the TiO 2 @Cu 3 (BTC) 2 heterojunction photocatalyst was significantly enhanced, exceeding that of TiO 2 (8.39 μmol·g −1 ·h −1 ) by a factor of 72.2 times, and overcoming the barrier of no hydrogen production activity in pure Cu 3 (BTC) 2 . Additionally, the heterojunction photocatalyst demonstrated excellent chemical and photocatalytic stability over a period of at least 200 days. The enhanced photocatalytic activity is attributed to the improved visible light absorption efficiency, the effective heterojunction interfaces, particularly the highly active Cu 2+ /Cu + mixed center formed. Importantly, noble metal was not used in the photocatalytic hydrogen production process. Instead, Cu 2+ /Cu + were employed as active centers, making it possible to synthesize low-cost photocatalysts. This work provides conceptual guidance for the development of highly efficient multivalent TiO 2 -based heterojunction photocatalysts.
研究领域:
材料科学
·
能源化学
·
光催化技术
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2019
·Vol. 15
·期 17
·1805478
·
IF 10.856
Kai Jia,Jiahua Ye,Guoxin Zhuang,Zanyong Zhuang,Yan Yu
Fabrication of low-dimensional nano-MOFs as well as nanoparticles/metal-organic frameworks (MOFs) hybrids has sparked new scientific interests but remains a challenging task. Taking Cu 3 (BTC) 2 as a proof of concept, it is demonstrated thats NH 3 ⋅H 2 O solution of a confined pH value can readily shape the bulk Cu 3 (BTC) 2 into nanoscale Cu 3 (BTC) 2 , beyond the need to control the crystal growth kinetics of MOFs. Adjusting the pH of NH 3 ⋅H 2 O within a much small range (10–11) allows fine tuning over the size and shape of nanoscale Cu 3 (BTC) 2 . Particularly at pH = 11, NH 3 ⋅H 2 O exhibits weak reducibility that triggers a reduction of part of Cu 3 (BTC) 2 into Cu 2 O, while shaping the other into Cu 3 (BTC) 2 nanowires. Benefiting from the coincidence of reduction and etching effects, the newly generated Cu 2 O dots can in situ anchor onto adjacent Cu 3 (BTC) 2 nanowires at highly dispersive state, forming a well-defined sponge-like architecture built of Cu 2 O dots and nano-Cu 3 (BTC) 2 . The CuO x derived from annealing of the Cu 2 O dots/nano-Cu 3 (BTC) 2 hybrid preserves the sophisticated sponge architecture and high porosity, and exhibits promising applications in phenol scavenging, with efficiency outperforming its counterparts and many other Cu-based catalysts reported in literature. It is anticipated that the findings here pave the way for the rational design of intricate nano-MOFs in a more efficient way.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2020
·Vol. 34
·期 9
·e5783
·
IF 3.14
Wenpeng Gong,Li Zhang,Ying Yu,Bixia Lin,Yumin Wang,Yujuan Cao,Manli Guo
In this paper, cobalt ion was employed to modify Cu 3 (BTC) 2 to improve the adsorption property for formaldehyde gas. The cobalt ion was doped during the synthesis of Cu 3 (BTC) 2 to form a product of CuCo-BTC. As the optimization assay indicated, when the molar ratio of the Co 2+ /Cu 2+ was 3/17, the adsorption amount for formaldehyde gas achieved the maximum, which is 1.6-fold to that of Cu 3 (BTC) 2 . ICP-MS, XPS, XRD, FT-IR, SEM and N 2 adsorption–desorption were used to investigate the structure and property of the CuCo-BTC. Subsequently, the adsorption kinetic process of the CuCo-BTC was assessed, the result suggests it coinciding to the pseudo first-order kinetic model which belongs to the physical adsorption process. The further assays indicated the CuCo-BTC possessing higher and faster colorimetric response to formaldehyde with indicator than other metal organic framework materials or common indicators. Therefore, it was utilized to fabricate a functional paper chip to perform the visualized detection of formaldehyde gas. The result displayed a sensitive response to formaldehyde gas in the concentration range of 0.02 ~ 0.08 mg/m 3 . Besides, the whole colorimetric assay merely takes 150 s, suggesting a favorable application prospect in the on-site test of detrimental gas.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 20
·18617-18625
·
IF 2.195
Meng Zuchao,Li Mao,Liu Xiang,Lei Zigang
A new hydrazine electrochemical sensor was fabricated based on in situ synthesis of Cu 3 (BTC) 2 /GO nanocomposite. Cu 3 (BTC) 2 /GO composite were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectrometry (FT-IR). Meanwhile, the electrochemical behaviors of hydrazine on the Cu 3 (BTC) 2 /GO/GCE were studied by cyclic voltammetry and linear sweep voltammetry. Under the optimized conditions, Cu 3 (BTC) 2 /GO/GCE had enhanced electrocatalytic activity toward hydrazine due to synergic catalytic effect between Cu 3 (BTC) 2 and GO. The electrochemical sensor exhibited a wider linear range (1.0 µM to 5000 µM) and a lower detection limit (0.5 μM) as well as good reproducibility and stability. The proposed sensor has also been used for the determination of hydrazine in tap water with satisfactory results.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2017
·Vol. 5
·期 30
·6138-6146
·
IF 4.543
Lijuan Zhang,Junmei Sun,Yunshan Zhou,Yuxu Zhong,Ying Ying,Yanqin Li,Yanqin Liu,Zareen Zuhra,Chunqian Huang
Cu3(BTC)2 (H3BTC = 1,3,5-benzenetricarboxylic acid) was anchored onto the surface of carboxymethylated chitosan non-woven fabrics by a controllable layer-by-layer technique in alternating solution baths of Cu(OAc)2·H2O and H3BTC solutions, and the resulting [Cu3(BTC)2]n@chitosan non-woven fabric composite materials (n = number of alternate deposition cycles) were thoroughly characterized. The results showed that the composite materials not only exhibited excellent decontamination ability against sulfur mustard (HD), with an enhanced degradation rate of HD with increasing n, but also possessed remarkable haemostasis performance. The degradation efficiency of sulfur mustard by [Cu3(BTC)2]4@chitosan was found to be much higher than that of pristine [Cu3(BTC)2]4. The inherent haemostatic capabilities of the chitosan non-woven fabrics were not affected by the growth of Cu3(BTC)2 on the surface of chitosan. Oral and histological toxicity examinations of the pristine Cu3(BTC)2 sample showed that damage and toxicity in the viscera of mice was very low, even if the intra-gastric administration dose of Cu3(BTC)2 reached a very high level (50 mg of Cu3(BTC)2 per kg of mouse). The results have shown that the as-prepared composite can be used safely as a promising haemostatic decontaminant with good recyclability against sulfur mustard.
研究领域:
材料科学
·
生物医学工程
·
化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 20
·13808-13816
·
IF 3.9
Min Yang,Jian Wang,Xuan Xue,Hechun Jiang
It is imperative to develop a rapid detection method for Hg2+ due to its harm to human health and the ecological environment. In this research, CuO/Au@Cu3(BTC)2 was synthesized through reducing HAuCl4 by CuxO@Cu3(BTC)2, which was obtained by reducing Cu3(BTC)2 with hydrazine hydrate. The oxidase-mimic activity of CuO/Au@Cu3(BTC)2 can be enhanced by Hg2+ through forming a Au–Hg alloy. Therefore, a colorimetric method was designed for Hg2+ detection with a linear relationship in the 0.05–25 μM range and a limit of detection of 9.7 nM. This strategy exhibited a strong selectivity to Hg2+ and was applied in a real water sample with reliable recoveries. This work provides a possibility for the rapid detection of Hg2+.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 63
·58511-58515
·
IF 3.289
Xiaomin Zhu,Shenping Zhang,Lihuo Zhang,Honglai Liu,Jun Hu
In situ interfacial growth of nanoparticles induced by the Pickering emulsion is a novel and convenient method for preparing hybrids/composites with specific tasks. For the first time, magnetic PMMA@Fe3O4/Cu3(BTC)2 hollow microspheres were produced by one-pot Pickering emulsion using Fe3O4 nanoparticle (NP) stabilizer. The Fe3O4 Pickering emulsion provided a large oil/water interface area for the in situ growth of Cu3(BTC)2 nanocrystals and further interfacial polymerization of polymethyl methacrylate (PMMA). The hollow hybrid microspheres showed synergetic multi-functions, including the magnetic separation property caused by Fe3O4 NPs, the reverse thermal expansion by PMMA, and the adsorption enhanced permeation by porous Cu3(BTC)2 NPs. When it was used as the drug carrier for ibuprofen, the good loading capacity and the controllable release duration confirmed its good properties. Moreover, all the realized synergetic advantages further reveled the potential promising applications of the interfacial synthesis by Pickering emulsion method.
研究领域:
材料科学
·
药剂学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2021
·Vol. 13
·期 17
·3846-3856
·
IF 5.686
Xu Yang,Zhaoxia Zhang,Wu Liu,Tengda Liang,Dai Dang,Xinlong Tian
Graphical Cu catalyzed hydrogenation : An in situ hybridization of metal organic framework Cu 3 (BTC) 2 and titania route is constructed to acquire a highly dispersed and robust CuO#TiO 2 catalyst, which enables a superior high activity (∼20.8 mol FUR /mol Cu h) with sound furfural alcohol yield (>99 %) toward furfural hydrogenation. Production of value-added chemicals sourced from biomass platform molecules has tremendous significance for sustainable chemical engineering. Herein, we reported a successful fabrication of a highly dispersed copper nanoparticles catalyst, CuO#TiO 2 , via a facile route of in situ homogeneously hybridizing the metal organic framework Cu 3 (BTC) 2 with titania, and subsequent calcination. Distinctly from the copper catalysts prepared by the conventional routes (impregnation or co-precipitation), this novel CuO#TiO 2 catalyst has a small particle size (∼5 nm), easy-reducible copper species, and weakened Lewis's acidity. As a result, it shows superior high activity (∼20.8 mol FUR /mol Cu ⋅ h) as well as high furfural alcohol yield (>99 %) at 140 °C and 2 MPa for furfural hydrogenation. Moreover, the CuO#TiO 2 can be conveniently regenerated by calcination at 200 °C in the air, with no appreciable changes in its structure or activity, a test that we repeated 8 times. Through comprehensive structure characterizations, it has revealed a significant interaction between the CuO and TiO 2 originated from the in situ hybridization, which enables a bi-functional effect on the resulted CuO#TiO 2 catalyst: one is to generate more copper active sites by promoting the copper dispersion and reducibility; the other is to hinder the side reactions by decrease the support Lewis acidity. This work demonstrates a practical strategy to rationally design a highly efficient catalytic system in furfural hydrogenation catalysis.
研究领域:
催化化学
·
材料科学
·
可持续化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2021
·Vol. 34
·期 2
·238-248
·
IF 1.114
Li Yan-ni,Hu Yan-yun,Ding Lei,Zhou Dian-bing,Chen Wen-jun
Residues of tetracycline antibiotics (TCs) in environments may be harmful to human. Due to their high polarities, it is extremely challenging to efficiently enrich TCs with low concentrations in natural waters for analysis. In this work, a magnetic metal-organic framework Fe 3 O 4 @[Cu 3 (btc) 2 ] was synthesized and applied as a dispersive micro-solid phase extraction adsorbent for TCs enrichment. Effects of dispersive micro-solid phase extraction conditions including extraction time, solution pH, and elution solvent on the extraction efficiencies of TCs were investigated. Results show that TCs could be enriched efficiently by Fe 3 O 4 @[Cu 3 (btc) 2 ], and electrostatic interaction between TCs and Fe 3 O 4 @[Cu 3 (btc) 2 ] dominated this process. Combined with liquid chromatography-tandem mass spectrometry, four TCs residues (oxytetracycline, tetracycline, chlortetracycline, and doxycycline) in natural waters were determined. The detection limits (LOD, S/N = 3) of the four antibiotics were 0.01–0.02 µg/L, and the limits of quantitation (LOQ, S/N = 10) were 0.04–0.07 µg/L. The recoveries obtained from river water and aquaculture water spiked with three TCs concentration levels ranged from 70.3% to 96.5% with relative standard deviations of 3.8%–12.8%. Results indicate that the magnetic metal-organic framework based dispersive micro-solid phase extraction is simple, rapid and high-loading for antibiotics enrichment from water, which further expand the practical application of metal-organic frameworks in sample pretreatment for environmental pollutant analysis.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2016
·
IF 4.509
Yizhen Yang,Qingxiang Wang,Weiwei Qiu,Hongxu Guo,Feng Gao
The metal–organic framework (MOF) of Cu3(btc)2 (btc = benzene-1,3,5-tricarboxylic acid) is covalently immobilized at chitosan (CS)–electrochemically reduced graphene oxide (ERGO) hybrid film modified electrode, which is characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectra (EDS), and electrochemistry. The MOF-based electrode is applied as an electrochemical sensing platform for the simultaneous detection of dihydroxybenzene isomers (DBIs) of catechol (CT), resorcinol (RS), and hydroquinone (HQ). The results show that the DBIs present well-resolved and intense voltammetric signals at the modified electrode, due to the synergic effect contributing from Cu3(btc)2 with unique porous framework structure and ERGO with high electronic conductivity. The excellent distinguishing efficiency of the sensor toward DBIs is also confirmed by the quantum chemical computation. Quantitative analysis assays by differential pulse voltammetry shows that the sensor has wide linear ranges and low detection limits for the DBIs. The developed sensor is also applied for the determination of DBIs in the real water sample, and satisfactory results are obtained. This work strongly implies that the MOFs have great potential in the construction of novel electrochemical sensor for isomers.
研究领域:
分析化学
·
材料科学
·
电化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2020
·Vol. 326
·期 1
·185-192
·
IF 1.137
Hu Ke,Liu Zhirong,Xiu Taoyuan,Zhou Limin,Wang Yun
The Cu 3 (BTC) 2 (BTC = 1,3,5-benzenetricarboxylic acid) was synthesized by water/solvent heat method. The Cu 3 (BTC) 2 was characterized by SEM/EDS, Zeta potential and XRD. Batch static adsorption experiments investigated the various factors affecting the adsorption of Th(IV) in aqueous solution such as pH, solid–liquid ratio, contact time, initial concentration and temperature, and the adsorption mechanism is also discussed. The adsorption process was in line with the pseudo-second-order kinetic model and the Langmuir isotherm model. At the same time, compared with other adsorbents. The results showed that Cu 3 (BTC) 2 had good adsorption for Th(IV) with a maximum adsorption of 757.58 mg g −1 .
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
Desalination and Water Treatment
·
2014
·
IF 0.987
Ling Li,Jun Cheng Li,Zhuang Rao,Gong Wu Song,Bin Hu
The adsorpion of methylene blue from aqueous solution on a highly porous metal-organic framework material [Cu3(BTC)2(H2O)3] was studied in conjunction with the adsorption isotherm, kinetics and regenerate of the sorbent. The adsorption isotherms of methylene blue on [Cu3(BTC)2(H2O)3] followed both the Freundlich isotherm and the Langmuir adsorption isotherm. Adsorption kinetics was determined from the experimental data, and the results showed that the adsorption obeyed a pseudo-second-order kinetics. The best oscillate time and the best [Cu3(BTC)2(H2O)3] amount were discussed, and [Cu3(BTC)2(H2O)3] gave high adsorption in only 5 minutes. The used [Cu3(BTC)2(H2O)3] could be regenerated by glycol solution, thus recycled. SEM image and FT-TR spectra of recycled [Cu3(BTC)2(H2O)3] after different adsorption times were compared. The high adsorption capacity and excellent reusability make [Cu3(BTC)2(H2O)3] attractive for the removal of methylene blue from aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）