Frontiers of Environmental Science & Engineering
·
2023
·Vol. 17
·期 9
·1-12
·
IF 6.4
Ju Tongyao,Han Siyu,Meng Fanzhi,Lin Li,Li Jinglin,Chen Kailun,Jiang Jianguo
Ordered mesoporous silica materials exhibit enormous potential in industrial production. Since coal fly ash (CFA) is abundant in Si, it has become a green and promising way to utilize CFA by synthesizing porous silica materials. However, the stable crystalline structure of CFA limits the extraction of Si, and the residue is generated during the process of extracting Si. In this work, we proposed a no-residue method to synthesize ordered mesoporous silica out of CFA. Sodium carbonate (Na 2 CO 3 ) was used to reconstruct the crystals of the CFA, and the calcined mixture then directly reacted with the precipitators. This method combined the process of Si extraction and porous material synthesis. In this method, no residue was generated and the silicon in both amorphous and crystalline phases of CFA was fully utilized. By this method, the extraction efficiency of Si was increased from 31.75% to nearly 100%. The as-synthesized mesoporous silica had a highly-ordered pore structure with a space group of la-3d , a surface area of 663.87 m 2 /g, a pore volume of 0.41 cm 3 /g, and an average pore diameter of 2.73 nm. The mechanism of crystalline transformation and material structure formation were systematically studied. This method provides a new idea to dispose of CFA and synthesize porous silica materials.
✓ 已验证
DOI
高影响因子
Catalysts
·
2016
·Vol. 6
·期 8
·112
·
IF 2.964
Xiaobo Wang,Lei Zhang,Shiguo Wu,Weixin Zou,Shuohan Yu,Ye Shao,Lin Dong
A series of Fe–Ce–Ti catalysts were prepared via co-precipitation method to investigate the effect of doping Ce into Fe–Ti catalysts for selective catalytic reduction of NO with NH3. The NO conversion over Fe–Ce–Ti catalysts was considerably improved after Ce doping compared to that of Fe–Ti catalysts. The Fe(0.2)–Ce(0.4)–Ti catalysts exhibited superior catalytic activity to that of Fe(0.2)–Ti catalysts. The obtained catalysts were characterized by N2adsorption (BET), X-ray diffraction (XRD), temperature programmed reduction (H2-TPR), temperature programmed desorption (NH3-TPD), Fourier transform infrared (FT-IR) spectrophotometry, thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). The data showed that the introduction of Ce results in higher surface area and better dispersion of active components on the catalyst surface and enhances the amount of surface acid sites. The interactions between Fe and Ce species were found to improve the redox ability of the catalyst, which promotes catalytic performance at low temperature. The XPS results revealed that Fe3+/Fe2+and Ce4+/Ce3+coexisted on the catalyst surface and that Ti was in 4+ oxidation state on catalyst surface. Ce doping increased the atomic ratio of Fe/Ti and Ce/Ti and enhanced the surface adsorbed oxygen species. In addition, Fe(0.2)–Ce(0.4)–Ti catalyst also showed better tolerance to H2O and SO2and up to 92% NO conversion at 270 °C with 200 ppm SO2added over 25 h, which suggests that it is a promising industrial catalyst for mid-low temperature NH3–selective catalytic reduction (SCR) reaction.Keywords:SCR;denitration;catalytic activity;synergistic effect;SO2resistance
✓ 已验证
DOI
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2023
·
IF 10.8
Youtao Xin,Yunjian Yu,Meihui Su,Xiaohui Li,Mahmoud Elsabahy,Hui Gao
The naturally evolved and intestinal pathogenic Fusobacterium nucleatum ( Fn )-induced drug resistance profoundly impaired the efficacy of chemotherapy against colorectal cancer (CRC). Alternative treatment modalities against Fn -associated CRC are desperately needed. Herein, we engineer an in situ-activated anti-tumor and antibacterial nanoplatform (Cu 2 O/ [email protected] ) to allow photoacoustic (PA) imaging-guided photothermal and NO gas combinatorial therapy for enhanced Fn -associated CRC treatment. The nanoplatform is constructed by loading cuprous oxide (Cu 2 O) and nitric oxide (NO) donor (BNN6) into dextran-decorated mesoporous silica nanoparticles (MSN), which is finally surface-functionalized with dextran via dynamic boronate linkage. Cu 2 O can be sulfuretted in situ by endogenous hydrogen sulfide overexpressed in CRC to produce copper sulfide with remarkable PA and photothermal properties, enabling the generation of NO from BNN6 under 808 nm laser irradiation, which is eventually triggered to release by multiple biological cues in the tumor microenvironment . Cu 2 O/ [email protected] exhibits superior biocompatibility , as well as H 2 S-triggered near-infrared-controlled antibacterial and anti-tumor performance in vitro and in vivo via photothermal and NO gas combination therapy. Furthermore, Cu 2 O/ [email protected] provokes systemic immune responses, thereby promoting anti-tumor efficacy. This study provides a conbinational strategy to effectively inhibit tumors and intratumor pathogens for enhanced CRC treatment.
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Yufei Cao,Juanjuan Yin,Yuting Shi,Ju Cheng,Yu Fang,Congshu Huang,Wenwen Yu,Mingsheng Liu,Zheng Yang,Haicun Zhou,Hongbin Liu,Jianrong Wang,Guanghui Zhao
In this work, a positively charged chitosan-grafted-polyarginine (CS-N-PArg) as the macro-molecular NO donor, and a negatively charged acetalated starch (AcSt-O-PAsp) as a glucose donor, have been synthesized. To achieve the multi-enzymatic cascade system for local generation of self-supply glucose to increase the H 2 O 2 concentration for the subsequent oxidization of L-Arg into NO, the designed positively charged CS-N-PArg, negatively charged AcSt-O-PAsp, glucoamylase (GA) and glucose oxidase (GOx) are absorbed and assembled in the pore of the gelatin sponge via electrostatic interaction to establish a smart antibacterial dressings (CS/St + GOx/GA). Once stimulated by Escherichia coli ( E. coli )-infected wounds (a slightly acidic environment), the cascade reaction system can sequentially induce to generate glucose, H 2 O 2 and NO, which exhibits a meaningful alternative idea for a high-performance antibacterial therapy.
✓ 已验证
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2022
·
IF 7.129
Shihuan Lu,Xizi Li,Bingzhi Yu,Jiafeng Ding,Yuchi Zhong,Hangjun Zhang
Efficient treatment of cyanobacterial blooms in eutrophication waters by safe and reliable nanomaterials is a big challenge for reducing environmental health risks. Herein, a novel strategy combining palladium clusters (Pd n ) with g-C 3 N 4 nanocomposite was presented to achieve high-efficient removal of Microcystis aeruginosa cells through coagulation and breakage. Interestingly, 95.17% of algal cells (initial concentration of 5.6 × 10 6 cells mL −1 ) were promptly removed in the Pd/g-C 3 N 4 (5%) system within only 10 min and without visible light irradiation and persulfate activation. Both the release of potassium ion and microcystin during the removal process and the transmission electron microscope observations of Microcystis aeruginosa cells proved that the integrity of the algal cell membrane was destroyed. The removal of Microcystin-LR (MC-LR) were further confirmed in the next process. Pd metal interaction and breakage against algal cells may cause disruption of algal cells. This study describes a novel technology for the superfast removal of harmful algae and may provide a new insight into the control of cyanobacterial blooms in practical applications.
✓ 已验证
DOI
PubMed
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2016
·Vol. 33
·期 12
·3407-3416
·
IF 1.408
Wu Bo,Xiong Yuanquan,Ru Jinbo,Feng Hao
A novel NO removal system is designed, where NO is initially oxidized by •OH radicals from the decomposition of hydrogen peroxide (H 2 O 2 ) over hematite and then absorbed by ammonium-based solution. According to the high performance liquid chromatography (HPLC) profile and the isopropanol injection experiments, the •OH radicals are proved to play a critical role in NO removal. The NO removal efficiency primarily depends on H 2 O 2 concentration, gas hourly space velocity (GHSV), H 2 O 2 feeding rate and reaction temperature, while the flue gas temperature slightly affects the NO removal efficiency. The low H 2 O 2 consumption makes this system a promising technique in NO removal process using wet-method. The evolution of catalyst in reaction is analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), Fourier Transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The nitrite ion and nitrate ion in aqueous solution are detected by the continuous phase flow analyzer. Finally, the macrokinetic parameters of the NO oxidation are obtained by using the initial rate method.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Weilong Rong,Yiqing Zeng,Shule Zhang,Qin Zhong
The technology of simultaneous ammonia selective catalytic reduction (NH 3 -SCR) denitration and carbon monoxide (CO) oxidation is a proposed approach for synergistic purification of nitrogen oxides (NO x ) and CO from flue gas. However, the lack of highly efficient catalysts has hindered the widespread adoption and application of this technology. Herein, a series of CuSO 4 /TiO 2 (denoted CuS/Ti-X, X means calcination temperature at 400, 500, and 600 °C) catalysts was prepared to investigate their performance for simultaneous NH 3 -SCR denitration and CO oxidation. The results show that dispersing CuSO 4 on TiO 2 carrier induces the formation of surface Cu-O defect structure and reduces the stability of the Cu-O-S structure, which gives CuS/Ti-X catalysts a good redox property. Hence, the CuS/Ti-500 catalyst exhibits good catalytic activity in simultaneous removal of NO and CO, even in the presence of SO 2 . Reaction process investigation demonstrated that the presence of NO and NH 3 inhibits the adsorption of CO and consumes active oxygen species, thereby suppressing the CO oxidation reaction. In contrast, CO can promote the activation of NH 3 via activating the redox sites, which is conducive to the NH 3 -SCR reaction via the E-R mechanism. This study provides new insights into the strategic design of dual-functional sulfur-resistant catalysts for flue gas purification.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2021
·
IF 6.609
Zhanzhi Ge,Yuesong Shen,Sasa Gu
The catalyst for selective catalytic reduction of NO x at high temperatures is significantly demanded by current gas-fired exhaust purification. In this work, the complex oxides composed of two different structures of ZrO 2 -WO 3 and WO 3 /ZrO 2 with zirconium as the main component were prepared for NH 3 -SCR of NO at high temperatures by blending method and equal volume impregnation method, respectively. Combined with XRD, NH 3 -TPD, FE-SEM, BET and in situ DRIFTS characterization, the effects of component optimization of two kinds of ZrO 2 and WO 3 complex oxides on the performance for NH 3 -SCR of NO were mainly studied. The optimal compatibility of ZrO 2 and WO 3 complex oxides was determined, and the corresponding N 2 selectivity and anti-interference ability of water vapor and SO 2 were further investigated. Results showed that the performance of ZrO 2 -WO 3 prepared by blending method for NH 3 -SCR of NO was significantly better than that of WO 3 /ZrO 2 prepared by impregnation method. The ZrO 2 -WO 3 containing 20% WO 3 has the best performance in NH 3 -SCR of NO with NO conversion higher than 90% and N 2 selectivity higher than 90% at 450–650 °C, and the performance was not affected by SO 2 , slightly affected by competitive adsorption of water vapor at 450 °C and not disturbed by water vapor above 500 °C. Further investigation showed that the NH 3 -SCR of NO over the ZrO 2 -WO 3 reaction followed both L-H and E-R mechanisms. Characterization analysis revealed that ZrO 2 -WO 3 has finer microscopic particles, larger specific surface area, higher acid amount and stronger acid strength than WO 3 /ZrO 2 .
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Cheng Cheng,Dongyun Chen,Najun Li,Hua Li,Qingfeng Xu,Jinhui He,Jianmei Lu
This paper reports the application of NH 2 -MIL-125(Ti) modified carbon nitride C v -C 3 N 4 with carbon vacancies in the removal of NO. We performed a series of characterizations of the complex and compared various ratios with the individual components. The results of UV spectrum analysis show that the composite's range of light absorption expanded due to the modification of Ti metal–organic framework. Furthermore, the results of photocurrent and electrical impedance indicate the compound has a better ability to generate and transfer electrons . The increase in the compound's NO removal efficiency (up to 63%) indicates that MOF has a positive effect on C v -C 3 N 4 modification—a good method for photocatalysis . Moreover, the compound can promote photocatalysis in a favorable direction.
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2026
·
IF 9.6
Xueqin Wang,Hong Chen,Chuan Liu,Mengna Wan,Shangyi Zhao,Na Li,Shaofeng Duan,Shaobo Duan
Diabetic wound infection remains a devastating threat to human health, largely due to bacterial colonization and increased antibiotic resistance during conventional treatments, and alternative therapeutic strategies are thus urgent to improve diabetic wound healing. Herein, we developed a multifaceted nanoplatform (CuO@SiO 2 @NO@Au, CSNA NPs) consisting of a cupric oxide (CuO) core, a mesoporous silicon nanoshell loaded with nitric oxide (NO), and in situ grown ultrasmall Au nanoparticles (NPs) for improved diabetic wound treatment. The results showed that the prepared CSNA NPs exhibited remarkable dual-enzyme mimic activity of glucose oxidase (GOx) and peroxidase (POD), effectively oxidizing glucose to generate gluconic acid, thereby reducing the glucose levels and reversing the acidic wound microenvironment. In addition, the fabricated nanoplatform generated abundant H 2 O 2 , which was converted into highly toxic hydroxyl radical ( · OH), leading to efficient bacterial eradication that was subsequently. Under near-infrared (NIR) light irradiation, the CSNA nanozyme also triggered the release of NO gas and aided in the removal of bacterial biofilms, collectively improving the wound microenvironment. By integrating chemodynamic therapy (CDT), photothermal therapy, and NO gas therapy, this self-activatable NIR- augmented nanozyme provides a promising antimicrobial strategy for diabetic wound treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Abdullrahman M. Al-Bishari,Yan Wang,Anni Wu,Haobo Sun,Bilal A. Al-Shaaobi,Amal M. Jama,Keqian Zhu,Xiaowei Lou,Mohammed S. Abdelmajeed,Ahmed S. Mahany,Lifeng Xiong,Ningyao Sun,Mingliang Yu,Zhennan Deng,Lei Lu,Jinsong Liu,Peng Gao
Dental implants face challenges such as poor osseointegration, delayed angiogenesis, and chronic inflammation. Endogenous gaseous signaling molecules hydrogen sulfide (H 2 S) and nitric oxide (NO) have emerged as key gasotransmitters that regulate angiogenesis, osteogenic differentiation and immune responses, making them attractive candidates for microenvironment-targeted therapies. Here, we engineer a dual gasotransmitter-releasing coating by co-electrospinning hydrogen sulfide (H 2 S) and nitric oxide (NO) donors, JK-2 and S-Nitroso- N -acetyl-DL-penicillamine (SNAP), into gelatin/polycaprolactone (Gel/PCL) nanofibers (NFs). These NFs were applied to laser-microgrooved titanium (Ti) surfaces, further modified with polyepigallocatechin gallate (pEGCG) to ensure stable attachment. The resulting coating exhibited sustained, pH-responsive release of H 2 S and NO, which acted synergistically to enhance cellular responses. In vitro , the dual gasotransmitter-releasing NFs coating enhanced endothelial cell migration, tube formation, and upregulated angiogenic markers (VEGF, TGF-β1, eNOS). Additionally, MC3T3 preosteoblasts showed increased alkaline phosphatase (ALP) activity, mineralization, and upregulation of osteogenic genes (Runx2, COL1, OPN, OPG). RNA-sequencing identified enriched pathways related to histone methylation and oxidative phosphorylation, crucial for osteogenesis and cellular metabolism. Macrophages cultured with these NFs demonstrated suppressed M1 pro-inflammatory markers and enhanced M2 polarization, indicating a shift toward a more regenerative immune response. In vivo , the NFs coating significantly improved neovascularization, bone volume, collagen deposition, and peri-implant tissue thickness. This synergistic release of H 2 S and NO provides a promising strategy to enhance osseointegration and bone regeneration by modulating angiogenesis and immune responses.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 12.2
Yiqun Cao,Huiying Xuan,Jun Liu,Hao Li,Peng Zhang,Tianzeng Chen,Yonghong Wang,Biwu Chu,Pengfei Liu,Yujing Mu,Qingxin Ma,Hong He
H2O2 is a vital atmospheric oxidant, while its photolysis in the troposphere is negligible in conventional view. For the first time, we find that gas-phase H2O2 can undergo heterogeneous photolysis to produce OH radicals on the surfaces of particles such as SiO2, Fe2O3, and Na2SO4 under solar irradiation, which further convert NO to produce HONO and NO2. It is demonstrated that acidity can inhibit the formation of HONO and promote the formation of NO2 significantly. Moreover, the heterogeneous photolysis of H2O2 is dependent on the reactivity of particles, with inert surfaces being more conducive to the generation of OH radicals. A MCM box model indicates that the HONO formation rate via the H2O2 heterogeneous reaction can reach 0.10 ppb·h–1 at 9 a.m., and the relative contribution to the total daytime HONO production can account for approximately 5% at 1 p.m. Given the ubiquitous presence of SiO2 in mineral dust particles, glass curtain walls, and terrestrial soils, these findings indicate that heterogeneous photolysis of H2O2 on the particle surface could be a potential source of daytime HONO. Our research also underscores the importance of atmospheric interfacial chemistry and its contribution to unknown sources of atmospheric oxidizing capacity.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）