IONICS
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2025
·
IF 2.6
Chen Xueqi,Tang Yinghui,Yang Han,Qi Xiang
A hierarchical tungsten oxide flower-rod architecture, which provides additional active sites for redox in electrochromic devices (ECDs), was prepared by hydrothermal method. WO 3 electrochromic (EC) thin films were prepared by spin-coating, and their electrochromic ability and electrochemical properties were measured. The complete oxidation of the electrochromic layer in the electrochromic device was promoted due to the large surface of the layered flower-rod structure providing active sites for ion transfer, resulting in a yellow–brown color in the bleached state (2.6 V) and a grey-blue color in the colored state (− 2.6 V). In addition, tungsten oxide with a hierarchical flower-rod structure exhibits good electrochemical stability. This work investigates the link between ionic redox efficiency and multicolor electrochromic performance, paving the way for the design of multicolor ECDs with a single inorganic EC layer.
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IRANIAN POLYMER JOURNAL
·
2024
·
IF 2.4
Chen Mingxing,Wu Tianying,Yang Kailu,Zhang Wei,Wang Xinya
Textile wastewater containing organic dyes and inorganic salts poses significant risks to the water security and human health. Herein, the development of an effective separation membrane for the treatment of dye wastewater is highly desired. In this work, the poly( m -phenylene isophthalamide) (PMIA)/polydopamine (PDA)-polyethyleneimine (PEI) loose nanofiltration (NF) membrane with highly dye wastewater separation efficiency was fabricated using a mussel-inspired co-deposition method with PMIA porous membrane as the substrate. The effect of PEI concentration in the mussel-inspired solution on the structure of PMIA/PDA-PEI membrane was studied by scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectroscopy (XPS), water contact angle, and Zeta potential analysis. The separation performance for dye and salt molecules of PMIA/PDA-PEI membrane with varied PEI concentration was also evaluated comprehensively. The results demonstrated that the content of PEI can be used to regulate the structure and performance of the PMIA/PDA-PEI loose NF membrane. When the PEI content was 0.25 g L −1 , the prepared PMIA/PDA-PEI loose NF membrane exhibited excellent dye rejection for Congo red and outstanding water flux, while the salt rejection was comparatively low. Meanwhile, the prepared PMIA/PDA-PEI loose NF membranes showed excellent stability under different testing conditions. These results indicated that PMIA/PDA-PEI loose NF membrane is promising in dye wastewater treatment and has potential for practical applications. Graphical abstract
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Su Yafei,Peng Huawen,Liu Xufei,Li Jiapeng,Zhao Qiang
Cation separation under extreme pH is crucial for lithium recovery from spent batteries, but conventional polyamide membranes suffer from pH-induced hydrolysis. Preparation of high performance nanofiltration membranes with excellent pH-resistance remains a challenge. Here we synthesize a high performance nanofiltration membrane (1,4,7,10-Tetraazacyclododecane (TAD)−1,3,5-Tris(bromomethyl)benzene (TBMB) thin film composite membranes (TFCMs)) with excellent pH-stability through interfacial quaternization reaction between TAD and TBMB. Due to the high stability of “C-N” bonds in TAD-TBMB TFCMs, its separation performance is stable even after 70 days immersion in concentrated acid (3 M H 2 SO 4 , HNO 3 , or HCl) and base (3 M NaOH), which is at least 15 times more stable than benchmark commercial membranes. The membrane shows an overall separation performance (11.3 L m −2 h −1 bar −1 (LMHB), R Co2+ : 97% in 2 M H 2 SO 4 ) due to the size sieving and the intensified charge repulsion, outperforming many of the state-of-the-art membranes. Finally, the TAD-TBMB TFCM remains stable during 30-days continuous nanofiltration of 2 M H 2 SO 4 and leachate (2 M H 2 SO 4 , ions: 6.2 g L −1 ) from spent batteries.
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PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 9
·1-14
·
IF 2.5
Li Yan,Li Xiangping,Fan Chen,Liu Ziru,Cheng Lihong,Xu Sai,Cao Yongze,Yu Hongquan,Chen Baojiu
Using a solid-state technique under low temperature conditions, Er 3+ /Yb 3+ co-doped Bi 2 Mo 2 O 9 phosphors with different concentrations were prepared, exhibiting excellent green up-conversion luminescence property. A thorough investigation was conducted on the phase structure, optical transition, up-conversion luminescence, and down-shifting luminescence properties of the prepared samples. Bi 2 Mo 2 O 9 : Er 3+ /Yb 3+ phosphors excited at 381, 980, and 1550 nm showed strong green fluorescence together with very faint red emission. The mechanism of up-conversion luminescence and its capacity for temperature sensing were examined under the excitation of various wavelengths. Under 980 nm excitation, the maximal relative and absolute sensitivities were determined to be 1.107%K − 1 and 0.756%K − 1 at 303 K and 513 K, respectively. Furthermore, the Judd-Ofelt intensity parameters of Er 3+ in Bi 2 Mo 2 O 9 : Er 3+ /Yb 3+ phosphors were calculated using the diffuse reflectance spectra and fluorescence lifetime of Er 3+ . In addition, material was combined with polyacrylic acid to make an anti-counterfeiting pattern. The results indicate that Bi 2 Mo 2 O 9 : Er 3+ /Yb 3+ phosphor is an excellent green phosphor with optical temperature measurement function, and it also has certain applications in the field of anti-counterfeiting.
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Scientific Reports
·
2024
·Vol. 14
·期 1
·1-11
·
IF 3.8
Wu Wenjing,Zhao Lingyu,Zhang Yuanyuan,Wei Jinchao,Han Juanjuan,Zhang Yangyang,Zhao Zhenwen
Early diagnosis and intervention of Alzheimer’s disease (AD) are particularly important to delay the pathological progression. Although fluorescent probes have been widely employed for investigating and diagnosing AD, their biological applications are significantly restricted due to the low penetration ability of the blood–brain barrier (BBB) in vivo. In this study, we reported the first Golgi-targeted two-photon (TP) fluorescent probe, DCM-DH, for detecting viscosity in the Golgi apparatus. The probe was rationally designed to exhibit superior analytical performance including high sensitivity, specific Golgi-targeting, efficient BBB penetration ability, and deep tissue penetration (247 μm) in the brains of AD model mice. Using the probe, we demonstrated that the fluorescence intensity in the human liver cancer cell (HepG2 cells) was higher than that of human normal liver cell (LO2 cells), and the brain viscosity of AD model mice increased significantly. We anticipate that this competent tool could be easily extended to other AD biomarkers for fundamental research on this detrimental disease.
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Nature Synthesis
·
2024
·Vol. 3
·期 6
·763-773
·
IF 0
Dong Kai,Yao Yongchao,Li Haobo,Li Huangjingwei,Sun Shengjun,He Xun,Wang Yan,Luo Yongsong,Zheng Dongdong,Liu Qian,Li Quan,Ma Dongwei,Sun Xuping,Tang Bo
Renewable electricity-driven electrochemical nitrogen oxidation is a promising alternative to traditional Haber–Bosch and Ostwald processes to directly synthesize nitrate from nitrogen. However, its efficiency is hindered by strong competition from the oxygen evolution reaction in aqueous environments, along with a deficiency in standardized testing protocols. Here we present an efficient approach for nitrogen oxidation, substituting the oxygen evolution reaction with hydroxyl radicals (·OH) generated through hydrogen peroxide decomposition to serve as an active oxygen source. Electrochemical tests demonstrate that the nitrogen oxidation, facilitated by ·OH, can achieve a Faradaic efficiency of 25.6% and a nitrate yield of 8.3 nmol s −1 cm −2 . Furthermore, we employed in situ electrochemical mass spectrometry, gas-phase infrared and electron paramagnetic resonance spectroscopy to establish a comprehensive set of benchmarks to confirm the authenticity of nitrogen activation and to examine the reaction mechanism mediated by ·OH. Techno-economic analysis underscores the promising feasibility and sustainable economic value of the presented method.
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MOLECULAR MEDICINE
·
2025
·
IF 6.4
Yufei Deng,Xiaoying Hou,Qian Fang,Haiping Wang,Xiaoxuan Li,Zhiyong Hu,Zhaolu Liu,Limei Fan,Yunyi Liu,Zhengqi Fu,Xiji Shu,Binlian Sun,Lijun Huang,Yuchen Liu
Background FOLFOX is the recommended chemotherapy regimen for colorectal cancer (CRC), but its response rate remains low. Our previous studies have established a close relationship between gut microbiota and the anti-CRC effect of FOLFOX, though the underlying mechanisms remain unclear. Diet has been confirmed as a key factor influencing gut microbiota, and high-salt diets, representative of western dietary habits, has been shown to affect gut microbiota, immune function, and the risk of developing CRC. However, the impact of high-salt diets on the anti-CRC efficacy of FOLFOX remains unstudied. Therefore, we aimed to investigate the effect and mechanism of high-salt diets on the anti-CRC effect of FOLFOX. Methods We performed 16 S rRNA sequencing and T500 targeted metabolomics analysis on fecal samples from CRC patients and healthy adults. A CRC orthotopic xenograft mouse model was used to study the effect of a high-salt diet on FOLFOX’s anti-CRC efficacy. 16 S rRNA sequencing and non-targeted metabolomics were conducted on mouse fecal samples. Flow cytometry was used to assess immune cell infiltration in tumor and paracancerous tissues. A mouse macrophage conditioned medium system, with tryptophan metabolites, was employed to annotate the functional metabolites, followed by in vivo verification using the orthotopic xenograft mouse model. Results The structure and metabolic profiles of gut microbiota are significantly different between 9 healthy adults and 6 CRC patients. A high-salt diet significantly reduced the efficacy of FOLFOX in mice, with notable changes in gut microbiota and related metabolites. Correlation analysis revealed a significant relationship between gut microbiota, tryptophan metabolites and FOLFOX efficacy. Flow cytometry indicated that a high-salt diet altered macrophage infiltration (CD45 + F4/80 + ) in both the tumor and paracancerous tissues. In vitro experiments confirmed that the tryptophan metabolite SK reduced FOLFOX efficacy, while IPA enhanced it through macrophage-conditioned medium. In vivo, we verified that under a high-salt diet, SK inhibited the efficacy of FOLFOX, while IPA promoted it. Conclusion A high-salt diet reduces the anti-CRC efficacy of FOLFOX through gut bacterial tryptophan metabolism mediated macrophage immunomodulation. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-025-01122-8.
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Nature Energy
·
2024
·
IF 49.7
Li Jing,Jin Chengkai,Jiang Ruixuan,Su Jie,Tian Ting,Yin Chunyang,Meng Jiashen,Kou Zongkui,Bai Sai,Müller-Buschbaum Peter,Huang Fuzhi,Mai Liqiang,Cheng Yi-Bing,Bu Tongle
The formation of a homogeneous passivation layer based on phase-pure two-dimensional (2D) perovskites is a challenge for perovskite solar cells, especially when upscaling the devices to modules. Here we reveal a chain-length-dependent and halide-related phase separation problem of 2D perovskite growing on top of three-dimensional perovskites. We demonstrate that a homogeneous 2D perovskite passivation layer can be formed upon treatment of the perovskite layer with formamidinium bromide in long-chain ( >10) alkylamine ligand salts. We achieve champion active-area efficiencies of 25.61%, 24.62% and 23.60% for antisolvent-free processed small- (0.14 cm 2 ) and large-size (1.04 cm 2 ) devices and mini-modules (13.44 cm 2 ), respectively. This passivation strategy is compatible with printing technology, enabling champion aperture-area efficiencies of 18.90% and 17.59% for fully slot-die printed large solar modules with areas of 310 cm 2 and 802 cm 2 , respectively, demonstrating the feasibility of the upscaling manufacturing.
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CELLULOSE
·
2024
·Vol. 31
·期 13
·8279-8293
·
IF 4.9
Hu Songnan,Li Peiyuan,Zhang Saisai,Huang Liulian,Chen Lihui,Hu Hui-Chao
The pulp industry, one of the oldest and largest chemical industries globally, plays a critical role in biomass utilization. Increasing kraft pulp yield has long perplexed researchers and engineers. Given that methyl mercaptan (MeSH) can be self-produced during the kraft pulping process, revisiting MeSH-assisted yield enhancement technology offers great attraction for pulp industry. MeSH’s strong nucleophilicity enables its consumption through both demethylation and non-demethylation reactions. Investigating the MeSH’s evolution at typical pulping conditions is crucial for achieving higher recovery rate of MeSH. This study found that higher pulping temperatures, increased alkali charge, and larger Na 2 S ratios improve the recyclable residual MeSH content in black liquors, increasing it from 17 to 36%. Under moderate pulping conditions, the residual MeSH content was approximately 30% of the original MeSH. Dimethyl sulfide (DMS), a valuable demethylation product of lignin or hemicellulose by MeSH, was found in black liquors at levels up to 15% of the original MeSH. Approximately half of MeSH participated in non-demethylation reactions and could not be recycled. X-ray photoelectron spectroscopy (XPS) analysis of separated kraft lignins suggested the generation pathway and chemical structure of new methylsulfur (MeS)-containing lignin. For economic balance and profitability, DMS recycling is proposed as cost compensation, or by adopting partial MeSH-assisted kraft pulping in batch digesting systems.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 19
·1-15
·
IF 2.8
Suguna A.,Parthibavarman M.,Sridevi C.,Al-Mohaimeed A. M.,Al-onazi W. A.
New ternary nanocomposites for photocatalysis, composed of ZnFe 2 O 4 @ZnO@rGO, were synthesised in this work using a straightforward hydrothermal method. After characterising the samples' structures, morphologies, and photoelectric outcomes, researchers found that 25–30 nm ZnFe 2 O 4 @ZnO nanoparticles were securely attached to the surface of the rGO sheets' fibres. The photocatalytic activity in the deterioration of rhodamine B (RhB) was much enhanced by the ZnFe 2 O 4 @ZnO@rGO composite photocatalysts when compared to ZnO, ZnFe 2 O 4 , and ZnFe 2 O 4 @ZnO. With a degradation efficiency of 99.9% for RhB and 88.7% for MB after 60 min of ultraviolet (UV) radiation, the ZnFe 2 O 4 @ZnO@rGO composite photocatalyst stood out as the most active photocatalyst. In addition, this nanocomposite exhibited excellent adaptability for use in water treatment, since it could be magnetised apart and maintained a dye removal percentage of about 100% after eight cycles. Analysis of the photodynamic response and TRPL spectra further verified that the manufactured ternary composite had improved charge transfer efficiency. The synergy of multicomponent ternary nanocomposites may have contributed to the enhanced performance by increasing absorption capacities automatically, discouraging the reconsolidation of electron–hole couples, and inducing the photodeveloped separation of proteins.
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Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Liu Yuhao,Wang Xuyi,Chen Jiayue,Wang Hua,Cheng Ming,Zheng Dan,Zhang Beibo,Geng Liang,Chen Liping,Jia Yingbin,Wang Luoxin
In this work, we synthesized core-shell NH 2 -UiO-66@UiO-67 via a solvothermal method to achieve controlled assembly of amino-modified UiO-66 and UiO-67 at micro and nano scale. NH 2 -UiO-66@UiO-67 exhibited notable visible light responsiveness and an increased specific surface area.In addition, it demonstrated outstanding performance in Cr(VI) removal, which can be attributed to the photocatalytic conversion of Cr(VI) into less toxic Cr(III), and the adjustable pores and large specific surface area facilitating Cr(III) adsorption. Notably, it exhibited a robust removal efficiency across a wide pH range of 2.0 to 10.0. Specifically, at pH = 2.0, the Cr(VI) solution with a concentration of 60 mg/L was completely removed within 140 min. The results show that the adsorption of core-shell NH 2 -UiO-66@UiO-67 meets the pseudo-second-order adsorption kinetics and has the ability of photocatalytic reduction of Cr (VI).
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JOURNAL OF POROUS MATERIALS
·
2024
·Vol. 31
·期 4
·1375-1386
·
IF 2.5
Shu Yue,Tao Jianghui,Wang Yanni,Huang Liangzhu,Wang Yabin B.
In comparison with traditional mesoporous materials, dendritic mesoporous silica&titania nanospheres (DMSTNs) with three-dimensional central radial pore channels and multiscale pores have larger pore volume, higher specific surface area, and easier accessible surfaces, making them promising carrier platforms for the applications in catalysis, drug delivery, heavy metals adsorption, etc. In this study, DMSTNs have been manufactured by a one-pot co-condensation method using titanium(diisopropoxide)bis(2,4-pentanedionate) (TDA) as the titanium source. Their morphologies and structures have been finely tuned by TDA content, reaction temperature, stirring rate, solvents, and so forth. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been utilized to directly reveal their differences. Two typical kinds of DMSTNs synthesized at different temperatures have been compared, covering N 2 adsorption-desorption isotherms, X-ray photoelectron spectroscopy (XPS), Raman spectrum, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis-DRS), Fourier Transform Infrared spectroscopy (FT-IR), etc. XPS and Raman results testify that the chemical composition and architecture of these DMSTNs resemble those of titanium silicalite-1 (TS-1) zeolite. The hydrogen yield and the corresponding rate of DMSTNs synthesized at 120 ℃ are 3.56 µmol·g -1 and 0.71 µmol·g -1 ·h -1 , being about 2.99 times higher than those of DMSNs that solely own SiO 2 in the skeleton. Nevertheless, DMSTNs synthesized at 70 ℃ possess a 10.08 µmol·g -1 yield and a 2.04 µmol·g -1 ·h -1 rate, nearly 8.47 times higher than those of DMSNs.
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