Environmental Progress & Sustainable Energy
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2025
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IF 2.3
Guoting Li,Panpan Yu,Yujie Guo,Xiao Mi,Mingyu Liu,Yunlong Ran,Zhongkun He,Baogui Wang,Yingxu Liu,Tannaz Pak
Secondary effluents are regarded as both sources and sinks of emerging contaminants. Adsorption by activated coke (ACO) is successfully being applied in the advanced treatment of secondary effluent from the wastewater treatment plant of China. However, ACO proved ineffective in removing the sweetener acesulfame (ACE). Herein, both mesoporous ACO and microporous activated carbon (AC) were comparatively used for the innovative confinement of Mn oxides within their porous structures by impregnation/calcination to enhance ACE adsorption. The optimal synthesis conditions were determined to be a MnSO 4 ·H 2 O/ACO mass ratio of 1.0% and a calcination temperature of 600°C (Mn-ACO600). Mn-ACO600 exhibited superior ACE adsorption compared to Mn-modified AC. Stable adsorption performance was observed within the neutral pH range, which favors practical applications. The pseudo-second-order model best described the adsorption kinetics, indicating a possible chemisorption mechanism. Both the Langmuir and Freundlich isotherm models could effectively simulate ACE adsorption, with a q max of 299.6 mg/g at 298 K. Thermodynamic analysis indicated a spontaneous and exothermic process (Δ H 0 = −68.51 kJ/mol) with entropy reduction (Δ S 0 = −218.56 J mol −1 ·K −1 ). Both coexisting inorganic anions and natural organic matter had insignificant influences. Furthermore, the recycled Mn-ACO600 retained an acceptable adsorption capability. Three-dimensional fluorescence excitation-emission matrix analysis demonstrated that Mn-ACO600 adsorption effectively removed organic matter from real secondary effluent.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2014
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IF 3.209
Ben Qi,Lan-Lan Lou,Yanbing Wang,Kai Yu,Ying Yang,Shuangxi Liu
Manganese containing mesoporous materials Mn-MCM-41 were prepared by template-ion exchange (TIE), in situ reduction (ISR), direct hydrothermal (DHT) and wetness impregnation (WI) methods. The samples were characterized by XRD , N 2 adsorption–desorption, HR-TEM, TG, UV–Vis, H 2 -TPR and ESR techniques, which illustrated that the definite structure of the MCM-41 was retained after introducing Mn into MCM-41 by different method. The catalytic activity and selectivity of the Mn-MCM-41 in the epoxidation of styrene with 30% H 2 O 2 as an oxidant agent were explored. The TIE catalysts showed the highest activity but Mn 2+ was leached during the reaction. The ISR catalysts exhibited high activity for epoxidation of styrene. Furthermore, recycling studies proved the ISR catalysts as heterogeneous catalysts , which did not lose the catalytic activity after four recycles appreciably. However, the DHT and WI catalysts showed poor performance in the catalytic epoxidation of styrene. Various parameters such as different reaction molar ratio of H 2 O 2 /styrene, catalyst amount, and kinds of solvents were studied to optimize the reaction conditions.
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高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
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2019
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IF 1.163
Huayao Chen,Junlong Hu,Hongjun Zhou,Xinhua Zhou,Hua Xu
The triblock copolymer F127 (molecular formula (EO)106(PO)70(EO)106) was adopted as template with TMOS as the silica source. They were hydrolyzed by acidic aqueous solution in which chlorpyrifos (CH) and metal ions (Mn+) were introduced to the products to construct "F127-Mn+-CH" coordination structure in one step. Different sustained release systems were prepared through changing the composition of acidic aqueous solution added during the preparation. The characterization results confirmed the coordination interaction existing among metal ions, mesoporous silica and chlorpyrifos. It was also proved that the chlorpyrifos loaded in the sustained release system existed as amorphous state. According to SEM and TEM observation, the pore of the material presented as face-centered cage-type cubic structure with IM-3M symmetry similar to SBA-16 which is in accordance with N2 adsorption isotherms. The as-synthesized system showed significant pH sensitivity in the sustained release process indicating that the sustained release system can be well stored in neutral environment and activated while sprayed into earth in acid or basic environment. Their sustained release curves can be described by Korsmeyer-Peppas equation in neutral while accords with Higuchi under acid or basic environment.
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RSC Advances
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2018
·Vol. 8
·期 4
·1940-1947
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IF 2.936
Pengchao Wang,Bohua Dong,Zhenjie Cui,Rongjie Gao,Ge Su,Wei Wang,Lixin Cao
Metal-halide perovskite nanocrystals (NCs) are considered to be promising types of optoelectronic and photonic materials. The emission colors of the cesium lead halide perovskite (CsPbX3, X = Cl, Br, I) NCs depend on the joint influence of the emission peaks of the host and its dopant ions. Herein, we report a phosphine-free strategy to synthesize Mn-doped CsPb(Cl/Br)3 NCs to tune their optical properties in a wide color gamut. Colloidal Mn-doped CsPb(Cl/Br)3 NCs were synthesized by injecting Cs-oleate solution into the MnCl2 and PbBr2 precursor solution. The as-prepared Mn-doped CsPb(Cl/Br)3 NCs are highly crystalline and uniform sized nanocubes with two emission peaks, including the host emission around 450 nm and the Mn2+ dopant emission around 600 nm, which are sensitive to the MnCl2-to-PbBr2 molar feed ratio and the reaction temperature. By varying the MnCl2-to-PbBr2 molar feed ratio or the reaction temperature, the relative PL intensities of dual color emission can be manipulated, showing their ability in tunable color output.
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高影响因子
Journal of Energy Storage
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2024
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IF 8.9
Qingtang Zhang,Qiqi Shu,Fei Lian,Chunyang Du,Pengfei Gao,Ya You
Layered transition metal oxide is considered as one of the most promising cathode materials for sodium-ion batteries due to the abundant reserves of Na, Fe, and Mn. Moreover, the trivalent Fe substitution weakens the Jahn–Teller effect and enhance the crystal structure during the de/intercalation of Na + . Herein, a series of Mn-rich P2-type Na 0.67 Fe 0.1 Mn 0.9 O 2 (NFMO-600, NFMO-700 and NFMO-800) are prepared using combustion synthesis followed by calcinating at 600, 700 and 800 °C, respectively. As confirmed by XRD and SEM , NFMO-700 owns ultrafine high-purity crystal particles with a larger layer spacing and a smaller crystal size. Owing to these unique structures, NFMO-700 exhibits excellent electrochemical performance , delivering an impressive 179 mA h g −1 at 0.2C, with a capacity retention of 84.43 % after 100 cycles at 0.5C.
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高影响因子
Journal of Environmental Sciences
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2026
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IF 6.5
Yuqin Lu,Xueshan Zhang,Jianguo Ding,Sijia Bai,Junxian Gao,Shumei Gao,Jianming Yu
Pt-based catalysts exhibit a strong negative correlation between oxidation efficiency and OVOC carbon chain length. • Mn-based catalysts maintain stable oxidation performance across OVOCs with different functional groups. • The catalytic activity of Mn-based catalysts is governed by manganese oxidation states, while that of Pt-based catalysts relies on metal-support interactions that modulate Pt dispersion and oxidation states. • The reaction pathways for OVOCs oxidation are governed by catalyst type and functional group. The catalytic oxidation of oxygenated volatile organic compounds (OVOCs) is highly governed by both their functional groups and catalyst types. However, systematic investigations into the structure-activity and selectivity relationships across different OVOCs and catalyst systems remain limited. In this work, three Pt-based catalysts (Pt/TiO 2 , Pt/Al 2 O 3 , Pt/SiO 2 ) and three Mn-based oxides (MnO 2 , Mn 2 O 3 , Mn 3 O 4 ) were systematically evaluated for the catalytic elimination of four typical OVOCs, namely ethanol, methyl formate, acetone and ethyl acetate. The performance of Pt-based catalysts showed a strong dependence on OVOCs carbon chain length, whereas Mn-based catalysts exhibited broader applicability for OVOCs degradation. The reaction pathway and energy barrier are dictated jointly by the functional groups of the OVOCs and the surface/redox properties of the catalysts. These findings advance the understanding of structure-activity relationships in OVOCs catalytic oxidation and provide crucial guidance for the rational design of high-performance catalysts for targeted VOCs removal. Download: Download high-res image (191KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Fangzheng Zhao,Qiqi Han,Chunyue Zhao,Tong Wu,Shuo Li,Tingbin Zhang,Mengkun Wang,Rijie Wang,Xiaoyan Song,Jinfeng Xing
MnBGs+ had multiple functions for hemostasis and wound healing. • MnBGs+ can be electrostatically adsorbed on the surface of sponge. • HH-MnBGs+ directional sponge can significantly shorten the water absorption time. • HH-MnBGs+ sponges can synergistically stop bleeding through various methods. • HH-MnBGs+ sponges can clear ROS, inhibit inflammation and promote wound healing. The control of major bleeding in accidents or clinical settings is a critical area that needs to be developed in the current medical field. Cryogel sponges have excellent hemostasis and wound healing potential due to its high porosity and water absorption. Here, a composite sponge (HH-MnBGs+) of natural polymer and positively charged Mn-doped bioactive glass nanofibers (MnBGs+) was prepared. The main body of sponge is composed of hyaluronic acid (HA) and hydroxypropyl chitosan (HPCS). The directional channels are constructed through directional freezing method and they can absorb water more quickly through capillary action. MnBGs+ were prepared by electrospinning methods and quaternized with silane coupling agents and adsorbed onto the surface of the channels through electrostatic interactions to facilitate rapid contact between them and blood or tissue. These multifunctional nanofibers adsorbed in the channel can respond to the external environment in a timely manner and achieve multifunctionality in antibacterial, anti-inflammatory, hemostatic, and healing promotion. When blood flowed into the channel, red blood cells (RBCs) and platelets were adsorbed on the surface of channel and form the artificial thrombus. Moreover, MnBGs+ can effectively alleviate inflammation and promote wound healing by removing reactive oxygen species (ROS) and accelerating angiogenesis. Thus, HH-MnBGs+ sponge has a great potential for application in non-compression hemostasis and wound healing. Download: Download high-res image (165KB) Download: Download full-size image
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2026
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IF 15
Deng Xu,Xie Xixiang,Zhou Xing,Jiang Lanfang,Zhu Tao,Su Rixiang,Chen Chunmei,Chen Wan,Chen Chunxia
The therapeutic efficacy of ischemic stroke (IS) treatment is severely limited by insufficient accumulation of therapeutic agents within ischemic lesions and persistent secondary injury after ischemia–reperfusion. Herein, we report a cRGD-functionalized exosome-based nanoplatform that enhances ischemic lesion-associated accumulation and antioxidative neuroprotection for the treatment of IS. Neural stem cell-derived exosomes were functionalized with cyclic RGD peptides (cRGD) and subsequently loaded with Mn₃O₄ nanoparticles to construct a hybrid nanosystem (cRGD-Exo@Mn₃O₄). The engineered exosomes preserve intrinsic brain tropism, while cRGD modification promotes preferential accumulation in ischemic regions, potentially through interaction with α v β 3 integrin that is upregulated in ischemic lesions. The incorporated Mn₃O₄ nanoparticles confer robust reactive oxygen species (ROS) scavenging capability, thereby mitigating oxidative stress in ischemic microenvironments. In vitro and in vivo studies demonstrate that cRGD-Exo@Mn₃O₄ exhibits enhanced accumulation in ischemic regions compared with non-modified counterparts. The nanosystem effectively attenuates oxidative stress and neuroinflammation, leading to reduced infarct volume, alleviation of cerebral edema, and improved neurological function in MCAO/R mice. Mechanistically, transcriptomic analysis suggests that the therapeutic effects are associated with modulation of inflammation-and cell death-related pathways, including suppression of the RIPK1/RIPK3/MLKL signaling cascade. Collectively, this study presents a rationally designed exosome-based nanoplatform integrating ischemic lesion-associated accumulation with ROS-scavenging capability. Graphical abstract
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ULTRASONICS SONOCHEMISTRY
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2026
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IF 10.2
Ruida Li,Huaxing Li,Fafeng Xia,Chunyang Ma,Zhongmin Xiao
To overcome the challenge of building stage-wise energy storage devices with tunable charge distribution, a novel electrodeposition method was developed using ultrasonic disruption. This technique enabled the fabrication of nickel–cobalt–manganese (Ni-Co-Mn) ternary oxide electrodes with vertically graded structures. The gradient was created by sequentially depositing four layers under varying ultrasonic power densities (10–40 W·cm −2 ) and substrate tilt angles (15°-45°). By precisely adjusting these parameters, a series of vertically graded NCM-x electrodes was synthesized. Among them, the NCM-11 sample, prepared using a power density ( P ) equal to 30 W·cm −2 and a tilt angle of 35°, revealed the most favorable morphology and electrochemical performance. Characterization using TEM and XPS confirmed the uniform distribution of NiO, Co 3 O 4 , and MnO 2 phases. BET analysis exhibited a specific surface area equaling 56.97 m 2 ·g −1 . Electrochemical measurements revealed that NCM-11 delivered a high specific capacitance equal to 1430.7F·g −1 at 1 mA·cm −2 , retaining 1334.9F·g −1 even at 15 mA·cm −2 , with excellent cyclic stability, maintaining 93.3 % of its capacitance following 5000 cycles. When assembled into an asymmetric supercapacitor (NCM-11//AC), the device achieved an energy density equal to 45.6 Wh·kg −1 at P = 830.7 W·kg −1 , and 30.8 Wh·kg −1 at P = 2440.3 W·kg −1 . It also demonstrated exceptional long-term stability, maintaining 96.2 % of its capacitance following 5000 cycles. These findings showcase the prospective value of ultrasonic-assisted, gradient-controlled electrodeposition for developing high-performance supercapacitor electrodes.
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MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Xu-yang Guo,Renagul Abdurahman,Xing-hong Pan,Rui Zhang,Ling-hua Zuo,Rui-hong Xu,Tao Li,Xue-Bo Yin,Ming Guan
First synthesis of Mn-CeO 2 @ZnGa₂O₄:Cr³⁺, Eu³⁺ composite. • Trimodal sarcosine detection using phosphorescence, peroxidase mimicry, and photothermal TMB. • Smartphone-based mobile tool enables on-site sarcosine detection. • Paper-based chip sensor simplifies sarcosine detection, making it facile and convenient. Prostate cancer (PCa) is the second most common cancer in men, while sarcosine levels have profound implications for the state of prostate cancer. Herein, we have designed a smart paper-chip sensor based on Mn-CeO₂ nanozyme@persistent luminescent nanoparticles (PLNPs) for trimodality fluorescence, colorimetric, and photothermal detection of sarcosine. The PLNPs were prepared as ZnGa₂O₄: 0.5% Cr 3+ , 1.5% Eu 3+ and then integrating Mn-CeO₂ nanozyme. The composite was integrated onto a polypropylene (PP) substrate as the paper chip. In pa1rticular, PLNPs exhibited the afterglow emission for eliminating the interference from the autofluorescence of biological samples; In the presence of both sarcosine and sarcosine oxidase, red phosphorescence is restored, for phosphorescence detection. The nanozyme of Mn-doped CeO₂ exhibit enhanced peroxidase activity, rapidly converting colorless 3,3′,5,5′-tetramethylbenzidine (TMB) into a blue form as oxidized TMB, which also possesses photothermal conversion capabilities, enabling both colorimetric and photothermal detection. Using a smartphone, this sensor enables on-site detection of sarcosine in serum with a detection range of 0–10 μM with extremely low limits of detection (LOD) as 1.88 μM for fluorescence; 0.08 μM for colorimetry; and 1.88 μM for photothermal mode, with all RSD below 5%. Overall, we have successfully designed for the detection of sarcosine in serum. The sensor's low cost, high sensitivity, and portability have been validated, thereby improving treatment success rates and survival rates for patients with early-stage prostate cancer. Scheme 1. Schematic illustration of a smartphone-based Mn-CeO₂@persistent luminescence nanoparticles (PLNPs) paper-based sensor for triple-mode detection of sarcosine. ZnGa₂O₄: Cr 3+ , Eu 3+ (ZCEGO) was fabricated as PLNPs featuring red emission at 700 nm. The PLNPs were surface-functionalized with Mn-CeO₂ nanozymes as peroxidase mimics, and the resultant nanocomposite was further incorporated onto a paper-based substrate. In the presence of sarcosine and sarcosine oxidase (SOX), H₂O₂ is generated. In Zone 1 (yellow section), the PLNPs are exposed, enabling phosphorescence detection. Meanwhile, in the presence of TMB, TMB in Zone 2 (white section) is oxidized to oxTMB, enabling colorimetric detection. The oxTMB can be used for photothermal detection upon irradiation with an 808 nm laser. Quantitative analysis of sarcosine is achieved using a smartphone. Download: Download high-res image (102KB) Download: Download full-size image
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CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.2
Jiayu Zhang,Kun Wang,Jinglu Yu,Kaiyang Xu,Lu Yang,Jiali Rao,Shuqin Song,Yi Wang
Electrochemical H 2 O 2 synthesis via the two-electron oxygen reduction reaction (2e – ORR) offers a green alternative to the energy-intensive anthraquinone process, but its practical viability is hindered by the sluggish and low-value oxygen evolution reaction (OER) at the anode. Here, we present an energy-saving paired electrolysis strategy that replaces anodic OER with methanol oxidation reaction (MOR) using a ternary Mn-doped NiCo layered double hydroxide (Ni 0.50 Co 0.30 Mn 0.20 LDH) catalyst in situ grown on nickel foam (NF) by a one-step hydrothermal method. The optimized catalyst achieves a low MOR potential of 1.32 V RHE at 10 mA cm –2 and a formate Faradaic efficiency of 92.9%, outperforming its undoped counterpart (Ni 0.61 Co 0.39 LDH, 1.37 V RHE and 83.3%). In-situ Raman spectroscopy and density functional theory calculations reveal that Mn doping lowers the energy barrier for the Ni 2+ /Ni 3+ redox transition, facilitating the generation of catalytically active Ni 3+ species. When coupled with graphitized hydroxyl-functionalized multi-walled carbon nanotubes coated on carbon paper (CNTs@CP) as the 2e – ORR cathode in a two-electrode electrolyzer, at the operation condition of 50 mA cm –2 , the 2e – ORR||MOR system delivers a cell voltage reduction of 254 mV, enabling a 10.3% decrease in energy consumption for H 2 O 2 production, compared with the conventional 2e – ORR||OER system. Moreover, the simultaneous generation of value-added formate at the anode yields a 97.9% increase in net economic benefit. This work establishes a generalizable paired electrolysis paradigm for the decentralized, energy-efficient, and economically viable co-production of H 2 O 2 and high-value chemicals.
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Results in Chemistry
·
2026
·
IF 5.8
Xianping Luo,Sihao Yu,Hepeng Zhou,Yongbing Zhang,Jin-Ru Feng
Porous biochar derived from discarded corn stalks was developed as a regenerable adsorbent for treating Tl-containing wastewater. The Tl adsorption capacity of Fe–Mn–Y doped biochar (FMYBC) was significantly enhanced compared to unmodified biochar. The IPD model accurately described Tl(I) adsorption on FMYBC, indicating that intraparticle diffusion is a key controlling step. Removal efficiency remained largely stable over a broad initial pH range of 3–13. Doping with rare earth elements markedly improved the adsorption performance of Fe Mn modified biochar under acidic conditions. However, the presence of coexisting ions (Na + , Mg 2+ , Ca 2+ ) reduced FMYBC's Tl + adsorption capacity. After two adsorption–desorption cycles, MFYBC retained 86.4% of its initial Tl removal capacity, demonstrating good stability and regeneration potential. Based on XPS and FTIR analyses, the primary Tl(I) removal mechanisms include ion exchange, surface complexation, and oxidation.
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危险品化学品经营许可证（带存储）