Nanomaterials
·
2025
·Vol. 15
·期 5
·321
·
IF 4.3
Boyang Xu,Jie Chen,Kai Wang,Pengfei Li,Le Kang,Huiling Du,Qianqian Liu,Xiaoqing Lian
The accumulation of organic pollutants and solid waste is one of the major environmental challenges faced globally. Establishing an efficient recycling system for solid waste and designing cost-effective, high-performance photocatalysts are urgent tasks for the removal of organic pollutants from water. This study utilizes coal gangue as the precursor to synthesize a coal gangue-based phosphorus–silicon–aluminum molecular sieve (SAPO-5) via hydrothermal synthesis. The resulting material was then composited with bismuth oxybromide (BiOBr) to form a novel BiOBr/coal gangue-based SAPO-5 nanocomposite. When the mass ratio of BiOBr to coal gangue-based SAPO-5 molecular sieve is 0.3, the synthesized nanocomposite exhibits excellent adsorption and photocatalytic performance for the removal of methylene blue, achieving a removal rate of 97.8% and the mineralization rate of 57.4% within 30 min. The superior performance can be attributed to the optimal pore size, rapid charge transfer rate, and high photogenerated charge density of the BiOBr/coal gangue-based SAPO-5 nanocomposite. The novel BiOBr/coal gangue-based SAPO-5 molecular sieve nanocomposite catalyst presents a new approach for the harmless treatment of organic dye wastewater and the high-value utilization of coal gangue.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 18
·5984-5988
·
IF 9.48
Yunchao Feng,Zheng Li,Sishi Long,Yong Sun,Xing Tang,Xianhai Zeng,Lu Lin
We report here that L-rhamnose, a less popular renewable and commercially available carbohydrate, can be used as a potential raw material to generate 5-methylfurfural (MF). In particular, nearly 100% yield of MF was achieved over 7 consecutive cycles in NaCl solution containing AlCl3 within 30 min, thus providing an alternative and industrializable way for the production of the potential bio-platform compound MF.
研究领域:
生物化学
·
可再生能源化学
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2019
·Vol. 10
·期 3
·835-843
·
IF 5.726
Yan Zhang,Shide Wu,Xia Xu,Heqing Jiang
Rapid deactivation by coke deposition is the main obstacle of ethane aromatization over Zn/ZSM-5. In this work, using the prepared nanosized Zn/HZSM-5, an almost threefold product yield and significantly improved stability were achieved in comparison with those of the microsized catalyst. XRD and XPS analyses indicated that a higher percentage of reactive [ZnOZn]2+ species was maintained during ethane aromatization over nano-Zn/HZSM-5 than micro-Zn/HZSM-5. In addition, the evolution of carbon deposits over nanosized and microsized Zn/ZSM-5 was investigated during prolonged ethane aromatization reaction using Raman spectroscopy and thermogravimetry measurements. Compared to the microsized catalyst, the nanosized zeolite facilitated the faster escape of light aromatics and the precursors of carbon deposits from the zeolite pores, thus suppressing the accumulation of coke deposits and improving the catalyst stability. Based on the nanosized Zn/HZSM-5, a protocol of isothermal reaction followed by regeneration was developed by periodically removing carbonaceous deposits, and an ∼25–35% product yield was achieved after 10 reaction–regeneration cycles.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Yongzhao Zhang,Xuzheng Chen,Yunlei Zhou,Tao Feng,Luping Lyu,Zhenya Zhu,Yifan Liu
The efficient transformation of glucose into 5-hydroxymethylfurfural (5-HMF) is crucial for sustainable bio-refinery processes, but achieving high production efficiency remains challenging. In this study, we presented the preparation of Al-containing metal-organic frameworks (MOFs), specifically MIL-53(Al), MIL-53(Al)-NO2, and MIL-53(Al)-NH2, using different ligands as catalysts to enhance the production of 5-HMF from glucose. Comprehensive characterization provided valuable insights into the properties of the synthesized MOFs. The synthesized MOFs exhibited varied MIL-53(Al) states, morphologies, and thermal stabilities based on the different ligands employed, which in turn affected their catalytic performance. Among the Al-containing MOFs synthesized, MIL-53(Al)-NH2 demonstrated remarkable catalytic capabilities for the conversion of glucose to 5-HMF. This MOF achieved an impressive 5-HMF yield of 53% and a reaction selectivity of 54%. The catalytic efficiency was further enhanced by leveraging the synergistic effect of MIL-53(Al)-NH2 in combination with Amberlyst-36, resulting in a 5-HMF yield of 59% and a reaction selectivity of 60%.
研究领域:
化学工程
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催化
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材料科学
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Ne Ni,Ying Ouyang,Jianqiang Liu,Enhui Xing,Yibin Luo,Xingtian Shu
It was the thermostability and acidity of P precursors that influenced the interaction between P species and framework Al to determine the hydrothermal stability of P modified ZSM-5. With H3PO2 and NH4H2PO2 as P precursors, the P–Al interactions of P modified ZSM-5 samples calcined under different temperatures were systematically investigated by X-ray fluorescence, X-ray photoelectron spectroscopy, 27Al, and 31P MAS NMR spectroscopy, and temperature-programmed desorption of NH3 (NH3-TPD). With H3PO2 as the precursor, lower calcination temperature favored less self-polymerization of P species; however, obvious loss of phosphorus was observed during hydrothermal treatment. Conversely, higher calcination temperature tended to result in excessive interaction between P and framework Al for dealumination. Therefore, moderate interactions between P and framework Al were obtained over H3PO2 modified ZSM-5 calcined at 350 °C, which contributed to weaken the self-polymerization of P species. Compared with H3PO2, neutral NH4H2PO2 generated a relatively weaker P-zeolite interaction, which was less affected by the calcination temperature.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 41
·24507-24514
·
IF 3.119
Peihong Li,Xueyan Dai,Lijie Qu,Yanlong Sui,Chunling Zhang
Peptide-containing hydrogels have become a research hotspot due to their unique secondary structure and biocompatibility. Herein, we used amino-terminated F127 as a macroinitiator to initiate the ring-opening polymerization of L-lysine(z)-NCA, and the obtained oligo(lysine)-modified F127 (FL) had degrees of polymerization of lysine of 2, 5, and 8. The results showed that the FL hydrogels had reversible temperature-dependent sol–gel transitions, and the introduction of lysine increased the critical gel temperature. In the dilute solution of FL, the micelle size increased and aggregated as the pH increased; the micelle grew into a rod-like shape under alkaline conditions. Scanning electron micrographs showed that the interior of the FL hydrogel had a more complete porous structure. The FL-2 hydrogel loaded with 5-fluorouracil exhibited an approximately linear release trend within 12 h and has good biocompatibility. Therefore, FL hydrogels have potential applications in the field of biomedicine.
研究领域:
生物材料
·
药剂学
·
高分子化学
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2011
·Vol. 16
·期 10
·8463-8474
·
IF 1.988
Haibo Xie,Zongbao K. Zhao
A new compound was detected during the production of 5-hydroxymethylfurfural (HMF) from glucose and cellulose in the ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) at high temperatures. Further experiments found that it was derived from the reaction of HMF with [Bmim]Cl. The structure of new compound was established as 1-butyl-2-(5’-methyl-2’-furoyl)imidazole (BMI) based on nuclear magnetic resonance and mass spectrometry analysis, and a possible mechanism for its formation was proposed. Reactions of HMF with other imidazolium-based ionic liquids were performed to check the formation of BMI. Our results provided new insights in terms of side reactions between HMF and imidazolium-based ionic liquids, which should be valuable for designing better processes for the production of furans using biomass and related materials.
研究领域:
化学
·
生物质能
·
有机合成
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zhenzhen Xu,Zhigang Wang,Dingmeng Hu,Huiqin Chen,Yufei Yan,Yuan Li,Mengjing Tu,Qiaofeng Shen,Xuanyi Liu,Rui Li,Cheng Lu,Fei Xue,Congying Xie,Gen Yang
5-Hydroxymethylcytosine in genomic DNA (5hmC-DNA), a predominant epigenetic mark, plays key roles in a broad range of bioprocesses such as cancer progression. However, efficient detection of 5hmC-DNA, especially from highly complex biological specimens, remains a harsh challenge due to its low abundance as well as the serious disturbance of non-targets. Leveraging MXene as the signal booster, an electrochemical biosensing technique is presented here for ultrasensitive detection of 5hmC-DNA from complex biological samples. The developed technique integrates enzyme-catalyzed transform of the hydroxyl group of 5hmC, sequence-specific recognition of the 5hmC-DNA targets, and facile electrochemical reaction. Remarkably, nanosized Ti 3 C 2 T x MXene is introduced as a highly conductive agent, managing to greatly boost the signals. Exhibiting outstanding consistency and robustness, the technique not only achieves excellent linear responses in a broad range of 5hmC-DNA (1.0 × 10 −13 –1.0 × 10 −9 m ) with the lowest detection limit of 59 fM but also possesses excellent selectivity against 5hmC analogs of including cytosine (C)- and 5-methylcytosine (5mC). More importantly, a proof-of-concept validation demonstrates the extraordinary ability of this technique for directly detecting 5hmC-DNA from complex backgrounds including cellular genomic extracts and serum of irradiated or non-irradiated mice, suggesting its highly promising potential for diverse applications such as early cancer screening.
研究领域:
分子生物学
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分析化学
·
医学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiantao Su,Xiaohui Yang,Hui Shi,Shuangquan Yao,Minghao Zhou
Catalytic conversion of biomass-derived value-added chemicals was of great significance for the utilization of renewable biomass resources to instead of fossil chemicals. Biomass-derived lignin was regarded as an important support and 5-hydroxymethylfurfural (HMF) was a vital platform chemical derived from cellulose. Herein, a series of lignin-MOF hybrid catalysts were prepared and modified with different heteropolyacids (HPAs), which were then successfully introduced into the selective conversion of HMF to 5-hydroxymethylfurfuryl alcohol (MFA). The effect of different HPA, calcination temperature, etc. were all studied, and all catalysts were well characterized. It was confirmed that silicotungstic acid modified catalyst (Ni 3 Co-MOF-LS@HSiW) exhibited the best catalytic performance, while the highest conversion of HMF was up to 100%, with the best MFA yield of 86.5%. The finding in this study could provide novel insights for the utilization of lignin and preparation of value-added biomass-derived chemicals.
研究领域:
生物质化学
·
催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Chemistry
·
2021
·Vol. 64
·期 7
·1088-1095
·
IF 9.445
Zhai Liming,Zhang Bin,Liang Haojie,Wu Huibin,Yang Xinchun,Luo Gen,Zhao Shichao,Qin Yong
The design of efficient iron-based catalysts remains a great challenge for selective cyclohexane oxidation to cyclohexanone under mild conditions. Because of the complex distribution of iron location on the support, the selectivity is always low. Here, we report a general strategy to selectively deposit highly-dispersed FeO x into the micropore of ZSM-5 by atomic layer deposition (ALD). The framework of ZSM-5 and the Brønsted acid sites are intact during ALD, and the Fe species are selectively deposited onto the defect and Lewis acid sites of ZSM-5. Besides, more Fe-O-Si bonds are formed over FeO x /ZSM-5 with a low loading of Fe, while FeO x nanoparticles are generated at high Fe loading. They cannot be realized by the traditional solution method. The obtained FeO x /ZSM-5 catalysts perform high selectivity of cyclohexanone (92%–97%), and ALD cycle numbers of FeO x control the activity. Compared with the Fe nanoparticles, the Fe-O-Si species performs higher turnover frequency and stability in the oxidation reaction.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Yaxue Xie,Pingxiong Cai,Huining Xiao,Yuanfeng Pan
In this work, a dual-responsive hydrogel for sustainable release of drug was prepared using chitosan grafted with PBA as substrate to form semi-interpenetrating polymer networks (S-IPN) via free-radical crosslinking polymerization of acrylic acid in the presence of MBAA as a crosslinker and KPS as an initiator as well as Fe 3+ .ions introduced. The results from comprehensive characterization indicated that the as-prepared hydrogel possesses cavity structure with the pores of varying sizes, thus facilitating the accommodation of 5-fluorouracil as a model drug. In addition, the swelling behavior of the hydrogels in different pH buffers and glucose solutions was also investigated. As expected, the prepared hydrogels are pH and glucose responsive due to PAA and phenylboronic acid incorporated into the hydrogel, which enables the slow or sustainable release of drug. Moreover, the release processes were fitted with various kinetic models whereas the release was better described by Korsmeyer-Peppas model or the drug release is mainly governed by the release mechanism of the hydrogel is primarily driven by Fickian diffusion from a mechanical point of view. Hydrogel loaded with drug was found to have good antibacterial effects against E. coli and S. aureus, leading to the potential for various medical-related applications.
研究领域:
材料科学
·
药学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Wei Zhao,Shanshan Ruan,Siyu Qian,Beibei Feng,Chengcheng Ao,Lei Wang,Fuyi Liu,Lidong Zhang
Catalytic combustion has become a promising technology to address the accelerating volatile organic compounds (VOCs) emissions. In this work, cobalt modified ZSM-5 zeolite catalysts (3–18 wt % Co) were prepared to investigate the combustion of n-butane (one typical model component of VOCs). The performances of catalysts were evaluated by conducting experiments in a flow tube reactor. XRD, BET, FT-IR, and XPS were also utilized to characterize their physicochemical properties. A significant enhancement of the catalytic activity was demonstrated in terms of the cobalt supported over ZSM-5, with an optimal cobalt loading of 7 wt %. The excellent catalytic activity of 7 wt % Co-ZSM-5 is mainly attributed to a higher concentration of active surface Co3+ species. Furthermore, DFT calculations indicated that the role of Co can enhance the activity by decreasing the activation barriers for C–H bond cleavage. In addition, the primary reaction mechanism of n-butane combustion on Co-ZSM-5 was also revealed.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）