ADVANCED FUNCTIONAL MATERIALS
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2021
·Vol. 31
·期 33
·2103262
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IF 18.808
Qiang Chu,Linhua Liao,Bin Liu,Gaorong Han,Xiang Li
As a type of unique gaseous molecules, SO 2 presents capabilities in the feasible cellular influx and the induction of apoptosis by generating intracellular toxic radicals. Developing therapeutic platforms to enable effective SO 2 gas release at the tumor site is highly demanded in the exploration of more “green” and effective treatment protocols for cancer therapy but remains challenging. Here for the first time, fine nanosheets composing of Mg-Al layered double hydroxides (MgAl LDH) are synthesized and inserted with sulfite in its layered structures (MgAl-SO 3 LDH). After the loading of glucose oxidase (GOx/MgAl-SO 3 LDH), the composite nanosheets present the controllable SO 2 gas release in an acidic responsive manner. Owing to the glycolysis effect of GOx, the gluconic acid generated agitates the intracellular SO 2 release from nanosheets, and excessive H 2 O 2 reacts with SO 2 effectively and facilitates the production of toxic radicals, inducing remarkable oxidative damages to tumor cells. Meanwhile, the consumption of intracellular glucose by GOx/MgAl-SO 3 LDH depletes the energy supply of tumor cells, favoring the tumor inhibition both in vitro and in vivo in a synergistic fashion. Therefore, this study has provided distinctive perspectives in the exploration of therapeutic platforms with green functionalities and biodegradability for effective tumor treatment.
研究领域:
癌症治疗
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材料科学
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生物化学
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纳米医学
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DOI
高影响因子
Journal of Cleaner Production
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2019
·
IF 6.395
Yun Li,Shenghai Yang,Pekka Taskinen,Jing He,Fangwen Liao,Rongbo Zhu,Yongming Chen,Chaobo Tang,Yuejun Wang,Ari Jokilaakso
This study proposes an innovative and environment-friendly method for recycling spent lead-acid batteries without SO 2 generation. Iron-containing waste was employed as a sulfur-fixing agent to retain sulfur as ferrous matte, which eliminated the generation and emissions of gaseous SO 2 . This work investigated the thermodynamic and experimental feasibility and conversion mechanism of the method, and evaluated its industrial applicability. A bench-scale test showed direct recoveries of 93.5% and 97.7% in crude lead and ferrous matte for lead and sulfur, respectively. The phase transformation mechanism study indicated that metallic lead from the lead paste was extracted mainly through the sequence of PbSO 4 → C / C O PbS → F e 3 O 4 PbO → C / C O Pb. Sulfur in PbSO 4 was thus first transferred to PbS and finally fixed as FeS. An industrial-scale pilot campaign was also conducted to confirm the feasibility and reliability of the new process.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2014
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IF 2.235
Fang Ding,Junjie Zheng,Yaqian Chen,Kaihong Chen,Guokai Cui,Haoran Li,Congmin Wang
A series of dual functionalized ionic liquids with metal chelate cations from surfactant and alkali metal salt were designed, prepared, and used for SO2 capture. The effect of metal ions, coordination number, anionic structures, temperature, and pressure on SO2 absorption was investigated. The interaction of these functionalized ionic liquids with SO2 was explained by spectroscopic investigation. The results showed that these metal-containing ionic liquids exhibited high absorption capacity through a combination of physical and chemical interaction of SO2 with basic anions and ether-containing cations as well as excellent reversibility (21 recycles). Considering the easy preparation, low cost, and excellent performance, these dual functionalized metal-containing ionic liquids provide significant improvements over traditional ionic liquids, indicating the promise for industrial application in SO2 capture.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 70
·66078-66086
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IF 3.289
Y. Zhang,D. Lu,J.-J. Zhang,C. Wu
Thirteen new 1,3-substituted imidazolium poly(azolyl)borate salts with the general formula [R1R2im][B(H)4−n(azolyl)n] (R1 = methyl, n-butyl, 2-(diethylamino)ethyl; R2 = methyl; azolyl = pyrazolyl, imidazolyl, 1,2,4-triazolyl, tetrazolyl; n = 2, 3) have been synthesized through salt metathesis of the corresponding imidazolium chloride and potassium poly(azolyl)borates. The newly synthesized dihydrobis(azolyl)borate and hydrotris(azolyl)borate salts are liquids at room temperature except two of the 1,3-dimethylimidazolium derivatives, [mmim][H2B(pz)2] and [mmim][HB(pz)3]. Conductivity, thermal and physicochemical properties of the new borate ionic liquids were systematically investigated. With multiple azolyl groups serving as binding sites, these ionic liquids (ILs) generally exhibit high SO2 absorption capacity (up to 5.8 mol mol−1 of IL or 1.05 g g−1 of IL for 1-methyl-3-n-butylimidazolium hydrotris(imidazolyl)borate, compound 13).
研究领域:
化学
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环境科学
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产品关联
DOI
高影响因子
Molecular Catalysis
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2017
·
IF 0
Peng Sun,Rui-tang Guo,Shu-ming Liu,Shu-xian Wang,Wei-guo Pan,Ming-yuan Li,Shuai-wei Liu,Jian Liu,Xiao Sun
CeSmOx mixed oxide catalysts supported on TiO 2 prepared by coprecipitation method were used for selective catalytic reduction of NOx with NH 3 . The results showed that the addition of Sm could effectively enhance the low-temperature SCR activity and SO 2 /H 2 O resistance of Ce/TiO 2 catalyst, and the appropriate mole ratio of Sm to Ce was 0.3. Characterization results indicated that the introduction of Sm could promote the formation of Ce 3+ and chemisorbed oxygen species on catalyst surface, which was favorable to the generation of NO 2 . Moreover, the doping of Sm could also promote the adsorption of NH 3 and NOx species on Ce/TiO 2 catalyst. The results of in situ DRIFT study revealed that the NH 3 -SCR reaction over CeSm/TiO 2 -0.3 catalyst was mainly controlled by the Langmuir−Hinshelwood mechanism in the low temperature range (<200 °C). Thereafter, the promoted NO oxidation and the enhanced NH 3 adsorption should play a major role for the excellent low-temperature SCR performance of CeSm/TiO 2 -0.3 catalyst.
研究领域:
催化
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环境科学
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材料科学
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DOI
Catalysis Science & Technology
·
2025
·
IF 4.2
Junjie Jiang,Yang Zou,Xue Li,Yongqi Zhao,Ziwei Zhao,Xiaolong Liu,Tingyu Zhu
Noble metal catalysts exhibit high efficiency and stability in CO removal, but their high loading of noble metals led to elevated costs, limiting industrial applications. This study selected three representative noble metals (Pt, Au, Ru) to investigate the CO reaction mechanisms on low-loading noble metal catalysts and the effects of SO2/H2O on CO oxidation. Catalysts with 0.1 wt% metal loading were synthesized via the impregnation method using conventional TiO2 as the support, denoted as 0.1Pt/Ti, 0.1Au/Ti and 0.1Ru/Ti. Among them, 0.1Pt/Ti achieved complete CO conversion at 270 °C and maintained 100% conversion over 46 h of continuous operation at 250 °C in the presence of SO2 and H2O. In situ DRIFTS indicated that the CO reaction over all catalysts followed the Mars–van Krevelen (MvK) mechanism. However, both Langmuir–Hinshelwood (L–H) and MvK pathways coexisted on 0.1Pt/Ti, with the L–H mechanism being dominant. DFT calculations revealed that CO also exhibited a higher adsorption preference for the 0.1Pt/Ti catalyst, which was identified as the primary reason for its superior performance.
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DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Guo Xuewen,Hu Yongji,Wu Xiaoyi,Shen Yuesong
H 2 O and SO 2 poisoning of cerium-manganese oxide catalysts remains a critical challenge for low-temperature selective catalytic reduction of nitrogen oxides by NH 3 . Here we show that Ti doping of CeO 2 induces lattice contraction and structural distortion, promoting the generation of oxygen vacancies, active oxygen species, and stable Ce-O-Ti interfaces. These strain-engineered structural modifications enhances surface Lewis acidity and triggers a downshift of the d-band center, collectively improving low-temperature catalytic activity and resistance to H 2 O/SO 2 poisoning. The optimized Ce 8 MnTi 2.5 O x catalyst achieves over 90% nitrogen oxides removal across a 150–335 °C temperature range. Under 5 vol.% water and 100 ppm SO 2 , it maintains over 98% efficiency for 12 h at 210 °C. Furthermore, during stepwise heating from 150 °C to 240 °C with 5 vol.% H 2 O and 200 ppm SO 2 , initial activity suppression below 180 °C is fully reversed at or above 210 °C, demonstrating temperature-driven regeneration. This study introduces a strain-engineering strategy for designing robust catalysts for low-temperature nitrogen oxides removal.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yong Zheng,Haobin Wu,Shouchao Zhong,Xun Kan,Ye Song,Fujian Liu,Wei Lin,Jianchun Wang,Lilong Jiang
The development of efficient and reusable sorbents for SO 2 removal from flue gas has attracted considerable attention. Herein, we report a “chainmail” structured Ca-based SO 2 sorbent by encapsulating Ca species within ordered mesoporous carbon (OMC), denoted as Ca(OH) 2 @OMC- x , where x denotes the Ca(OH) 2 mass fraction (wt%). The OMC was prepared via a one-step solvent-free mechanochemical assembly: the precursors and a block copolymer template (Pluronic F127) were ground to form a preorganized composite, followed by solidothermal treatment and calcination to remove the template and carbonize the polymer. The obtained OMC was then impregnated with a Ca precursor and calcined to strengthen interfacial interactions, encapsulating the Ca species within the OMC framework. Finally, steam treatment converted the confined Ca species into finely dispersed Ca(OH) 2 active domains. The resulting Ca(OH) 2 @OMC- x exhibits a large BET surface area (169.4–290.3 m 2 /g), long-range ordered mesoporosity with a narrow pore size distribution (∼5.5 nm), and well-dispersed Ca active phases with enhanced stability. Consequently, Ca(OH) 2 @OMC- x serves as an efficient and reusable solid sorbent for SO 2 capture, exhibiting a high SO 2 adsorption capacity of 11.24 mmol/g and maintaining 98.6% of its initial capacity after five adsorption–desorption cycles. This study provides an effective “chainmail encapsulation” materials design strategy for scalable SO 2 abatement under complex flue gas conditions.
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Yutao Chen,Jihui Xiang,Jinmin Xie,Xinyu Wang,Zeyu Jiang,Yanfei Jian,Mudi Ma,Chi He
SO 2 exhibits opposite effects on C 3 H 8 oxidation over Pd/SiO 2 and Pt/SiO 2 . • O 2 concentration regulates sulfur species evolution and SO 2 tolerance. • Sulfate species block Pd active sites and induce Pd particle sintering over Pd/SiO 2 . • Pt-O-O-S structures on Pt/SiO 2 promote C 3 H 8 adsorption and C-H cleavage. The oxygen concentration in industrial C 3 H 8 -containing exhausts fluctuates significantly (from 0.5 to 18 vol%). However, the intrinsic effect of SO 2 on catalytic C 3 H 8 oxidation under diverse oxygen conditions is greatly overlooked, leading to a discrepancy in the SO 2 tolerance of developed catalyst between laboratory and real-world emission conditions. Herein, the influences of oxygen contents on sulfur species distribution and subsequent sulfur tolerance of typical Pd/SiO 2 and Pt/SiO 2 catalysts during C 3 H 8 oxidation were systematically explored. Experimental results reveal that the oxygen concentration dramatically affects the types and contents of sulfur species over catalysts. For Pd/SiO 2 , SO 2 tends to be converted into sulfate (SO 4 2- ) species to cover the Pd 0 active sites and causes Pd particle sintering, thereby inhibiting the C 3 H 8 adsorption and oxidation. In sharp contrast, sulfite (SO 3 2- ) species form on Pt/SiO 2 , leading to a novel Pt-O-O-S active interface that enriches the adjacent Pt site with electrons, promoting C 3 H 8 adsorption and C-H cleavage and further enhancing catalytic activity. As oxygen concentration decreases, the impact of SO 2 on catalytic performance becomes more pronounced. Under the oxygen-lean conditions, Pd particles sintering caused by SO 2 is the most severe at 1 vol% O 2 , causing an 80 °C temperature increasing in 90% C 3 H 8 conversion; however, the contents of SO 3 2- species and Pt-O-O-S structures on Pt/SiO 2 are elevated, facilitating C 3 H 8 adsorption and activation. Our findings enrich the understanding of SO 2 behavior under different industrial conditions, providing a theoretical basis for the design of SO 2 -tolerant catalyst in diverse application scenarios. Download: Download high-res image (178KB) Download: Download full-size image
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Qiongdan Zhang,Ming Ye,Yuanyi Lei,Heng Wang,Yong Zheng,Yihong Xiao,Fujian Liu,Lilong Jiang
The efficient adsorption of sulfur dioxide (SO 2 ) is crucial for purifying exhaust gases, and zeolites are promising adsorbents due to their low cost and excellent stability. However, developing FAU-type zeolites with high adsorption capacities and selectivities remains challenging due to their narrow pores and limited adsorption sites. Herein, an additive-free synthesis strategy is proposed to facilely obtain NaX zeolites (X-HCL) with the house-of-card-like morphology. The hierarchical structure of X-HCL not only benefits the removal of SO 2 through favorable spatial diffusion, but also promotes the loading of basic adsorption sites- [caprolactam] [tetrabutylammonium bromide] (CT) ionic liquid. The obtained CT/X-HCL adsorbent demonstrates remarkable SO 2 adsorption capacity (10.58 mmol/g) and cyclic stability, as well as great selectivity of SO 2 /N 2 (1673) and SO 2 /CO 2 (219) due to the strong affinity of CT towards SO 2 . Moreover, co-feeding with water vapor benefits the adsorption of SO 2 on CT/X-HCL owing to the enhanced chemisorption of hydrated CT for SO 2 . This research provides new insights into the construction of hierarchical zeolite for efficient adsorption and separation of SO 2 .
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产品关联
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Huifang Guo,Jia Liu,Yunlong Shi,Xiaohong Xie
In this study, bio-based pyrrolidone (2-Pyr) and low-toxicity tetraethylammonium chloride (TEAC) were selected to prepare inexpensive, low-viscosity deep eutectic solvents (DESs), which is in line with the concept of green and sustainable chemistry and is suitable for industrial production. The highest absorption capacity of TEAC:2-Pyr (1:4) was determined to be 1.03 g SO2 /g DES at 20 °C. Eight absorption–desorption cycling tests were performed, and it was found that the absorption performance of DESs for SO 2 slightly varied. It was also proved that DESs have a certain degree of water resistance and high SO 2 selectivity. Fourier transform infrared spectroscopy and computational chemical analysis showed that the DESs composed of TEAC:2-Pyr formed intermolecular hydrogen bonds, the O atoms in Cl − and 2-Pyr played a role in the absorption of SO 2 , and hydrogen bonds were broken by the addition of SO 2 .
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 HAZARDOUS MATERIALS
·
2023
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IF 13.6
Lurui Wan,Kai Wang,Yuan Chen,Zhiyong Xu,Wenbo Zhao
Wet flue gas desulfurization is widely used for its high efficiency, however, the low absorption capacity, high viscosity and poor thermal stability of absorbents remains an open question. Herein, a low viscosity and high thermal stability SO 2 absorbent with dual interacting sites was synthesized by introducing phenyl into organic silicon . The thermal stability of 1,5-bis (diethylamino)− 1,1,5,5-tetramethyl-3,3-diphenyltrisiloxane (BADPS) is comparable to ILs , while its viscosity is much lower than that of ILs . For the first time, we use a variant of the pseudo-first-order reaction rate equation obtained the reaction rate constant and the saturation absorption capacity. In addition, the optimal absorption and desorption temperatures were obtained based on an objective function. Mostly importantly, the absorption enthalpy change (ΔH) and entropy change (ΔS) of BADPS absorption reaction show the highest absolute values of SO 2 absorbents reported so far. These results indicated that the prepared amine alkyl organosilicon could serve as a promising desulfurizing agent with low-energy consumption.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
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