Advanced Energy Materials
·
2025
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IF 26
Lin Li,Qianwen Gao,Jie Miao,Nan He,Qian Zhang,Jun Zhang,Haonan Wang,Dawei Tang
The ability to continuously harvest energy from the human body has immense potential for powering wearable devices and biomedical systems, yet current thermoelectric hydrogels are constrained by rapid dehydration, limiting operational lifespans to less than 120 m and achieving temperature gradients of only ≈5 °C. Here, a self-cycling thermoelectric hydrogel is presented that addresses these challenges by autonomously regulating water-thermal cycling. This strategy achieves a maximum temperature gradient of 13 °C—more than 2.6 times the state-of-the-art—and maintains stable thermoelectric output for over 1500 min, the longest lifespan reported for such materials. Additionally, the hydrogel fully recovers hydration within 5 h, enabling robust reusability. Mechanistic studies reveal that optimized ionic interactions enhance thermal diffusion and elevate the Seebeck coefficient to 4.1 mV K −1 . This study introduces a scalable design for wearable thermoelectric materials, paving the way for advancements in health monitoring, environmental sensing, and wearable electronics.
研究领域:
材料科学
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生物医学工程
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可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Yangyang Bai,Xiaoqin Sun,Yuan Dang,Sha Yu,Jun-Jie Zhu,Yuanzhen Zhou
Electro-Fenton reaction was limited by the generation of H 2 O 2 and the circulation of Fe(Ⅱ)/Fe(Ⅲ). Herein, an efficient electro-Fenton-like process was constructed based on Fe 3 O 4 –CaO 2 cathode promoted by peroxymonosulfate (PMS). Levofloxacin (LEV) could be efficiently degraded (92.1%) and mineralized with the TOC removal of 74.5% in this self-circulating process. More importantly, the Fe 3 O 4 –CaO 2 exhibited good stability in the recycles due that CaO 2 was covered by Fe 3 O 4 , which inhibited the rapid release of H 2 O 2 . Mechanism analysis indicated that CaO 2 could not only replace H 2 O 2 to accelerate the oxidation of Fe(Ⅱ) to Fe(Ⅲ), but also could form complexes with Fe(Ⅲ) and PMS to transfer electrons from ligands to metals, thereby enhancing the reduction of Fe(Ⅲ) to Fe(Ⅱ). As a result, the electrical consumption was significantly reduced, which was only 5.0% of the Fe 3 O 4 in electro-Fenton reaction. Meanwhile, the hydrolyzed product of Ca(OH) 2 reacted with Fe(Ⅲ) in the presence of H 2 O 2 and converted into CaO 2 . Thus, the self-circulation of CaO 2 /Ca(OH) 2 and Fe(Ⅲ)/Fe(Ⅱ) was realized, which accelerated the generation of active species, such as, ·OH, O 2 · - and 1 O 2 . This work first proposed a self-circulating electro-Fenton-like system and demonstrated the potential application of Fe 3 O 4 –CaO 2 in the treatment of wastewater.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Hui Li,Fuwan Zhai,Daxiang Gui,Xiangxiang Wang,Chunfang Wu,Duo Zhang,Xing Dai,Hong Deng,Xintai Su,Juan Diwu,Zhang Lin,Zhifang Chai,Shuao Wang
Uranium enrichment is perhaps the most critical chemical process throughout the nuclear fuel cycle including uranium mining, uranium extraction from seawater, used fuel reprocessing and disposal, and environmental contamination remediation. New uranium extraction technology is still highly desirable at current stage, although a variety of extraction methods have been established and developed in the past several decades but all with clear demerits. Herein we present a new uranium extraction strategy with combined ligand complexation and photocatalytic reduction based on postsynthetically functionalized metal-organic frameworks (MOFs). The highly robust and photoactive MOF PCN-222 is modified with phosphono- and amino groups that can capture U(VI) from solution. Upon visible light irradiation, the photo-induced electrons from the MOF host can efficiently reduce U(VI) pre-enriched in MOF, affording neutral uranium species that evacuate the MOF structure and regenerating the active site readily for capturing additional U(VI). This auto-recycled process offers an ultrahigh uranium extraction capacity not limited by the number of adsorption sites and more importantly an extra uranium uptake selectivity over these non-redox-active competing metal cations, and can be utilized for uranium separation over extremely wide uranium concentrations and pH ranges, showing a powerful application potential.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2023
·
IF 9.9
Dong Zhicheng,Xu Yunyun,Wu Can,Chao Jin,Tian Chen,Lin Zhang
Organo-chromium(III) complex is one of the chromium contaminant species, which would transform to high-toxic Cr(VI) during migrating in the environment. Such natural organo-chromium(III) (NOCr) is difficult to remove by traditional degradation or precipitation methods, due to its high stability and solubility. Herein, we demonstrated a novel NOCr removing method by transforming it to certain structures similar to Cr-Fe minerals in nature, through a self-circulating decomplex and immobilization mechanism with nano zero-valent iron (nZVI). Taking chromium glycinate (Cr-Gly) as a probe, nZVI showed a high Cr removal efficiency of 99.4% under ambient conditions. The removal process included three stages of adsorption, decomplexation, and re-immobilization. Cr-Gly was first adsorbed on the surface of nZVI by chemisorption of the oxide shell. Then, the adsorbed Cr-Gly was decomplexed and oxidized to Cr(VI) by ·OH and 1 O 2 , which were generated from molecular oxygen activated by nZVI. Meanwhile, the released Cr(VI) could be in-situ adsorbed and re-reduced to Cr(III), which was further immobilized in form of Cr-O-Fe complex. As the Cr-O-Fe complexing structure was similar to that of Cr-Fe minerals (such as chromohercynite) in nature, this work explored a novel and efficient NOCr removing method that was potential to weaken chromium pollution in the environment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Jialiang Guo,Mengdie Jin,Yongkang Huang,Leilei Yin,Xiaopeng Li,Yaping Du,Xinyun Zhai
Specific regulation of the tumor microenvironment (TME) is a potential strategy for tumor therapy. Although many TME-responsive nanozymes have been developed for tumor therapy, the limited substrates affect the therapeutic effect. In this study, cerium single-atom nanozymes (Ce SAs) are prepared by immobilizing cerium (Ce) using zeolitic imidazolate framework-8 (ZIF-8) as a precursor. The reversible conversion between Ce 3+ and Ce 4+ endows Ce SAs with multiple enzyme-like activities, such as peroxidase (POD)-like activity, oxidase (OD)-like activity, catalase (CAT)-like activity, glucose oxidase (GOD)-like activity, and glutathione peroxidase (GSH-Px)-like activity. All of the above enzyme activities give Ce SAs cascade self-circulation properties and can be used for tumor therapy in the TME. In addition, the prepared Ce SAs also have photothermal properties, which can achieve photothermal therapy (PTT) of tumor cells under 808 nm near-infrared (NIR) irradiation. Combining the cascade self-cycling enzyme-like activities and the photothermal properties of Ce SAs, this synergistic therapy makes Ce SAs have attractive efficacy in tumor treatment.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Today
·
2022
·
IF 18.962
Miao Wang,Qian Chen,Dong Xu,Zebin Yang,Jufeng Chen,Yang Zhang,Hangrong Chen
Magnetic hyperthermia and reactive oxygen species (ROS)-related nanocatalytic tumor therapy has received increasing focus due to their no penetration depth limit, tumor-specificity, and non-invasiveness. However, their efficacy is still affected by the intrinsic protective mechanism of cells’ autophagy. Herein, a novel mesoporous magnetic copper ferrite nanoagent (CuFe 2 O 4 NPs) containing autophagy inhibitor chloroquine was developed for the synergistic enhancement of cancer treatment. Specifically, the mesoporous structured CuFe 2 O 4 NPs with high surface area was endowed with highly efficient ROS generation via self-cycling Fenton redox process between Cu 2+ and Fe 3+ . More importantly, the inside autophagy inhibitor chloroquine could efficiently inhibit cancer cells’ resistance to hyperthermia and oxidative stress , realizing mild magnetic hyperthermia therapy (MHT) under 45 °C and preventing from damages to normal tissues. Furthermore, the temperature rise within tumor area further accelerated the Fenton reaction to boost the productivity of hydroxyl radicals ( · OH) for enhancement of chemodynamic therapy (CDT). This work offers a novel strategy of magnetothermal-augmented in-situ self-cycling redox nanocatalysis in synergy with inhibition of autophagy, enlightening a new insight on the design of multifunctional therapeutic nanoagents based on a single component.
研究领域:
纳米医学
·
肿瘤学
·
生物材料学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Zhao Hengyu,Wang Baoyu,Yang Shiqing,Zhu Huamiao,Zhang Zihao,Li Wenyao,Yang Xiangmin,Fang Bin,Liang Ying,Zhang Zhen
As conductive fillers, the uniformity and compactness of composite metal powders are crucial for preparing high-performance conductive pastes. In this study, a self-circulating electroplating method was proposed, which could efficiently deposit Sn plating on the seed of Cu micro-flakes to prepare composite metal powders. The effects of total electroplating time, single electroplating time, loading mass of Cu seeds on the cathode support, and the bath temperature on Sn plating layer have been systematically investigated and optimized. And the influence mechanisms of electroplating parameters on coating coverage, compactness, and uniformity of Sn plating layer were proposed. The Sn-coated Cu micro-flakes with compact plating layer of 142.9 nm thickness were obtained with the total electroplating time of 60 min, the single electroplating time of 3 min, and the loading mass of Cu seeds of 18 mg/cm 2 at the bath temperature of 15 °C. Finally, the as-prepared Sn-coated Cu micro-flakes were used as fillers to prepare conductive pastes, which exhibited good antioxidation performance at 85℃ and 85%R.H. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
·
2021
·
IF 4.237
Zhou Lan,Yangcheng Lu
In this work, a tubular reactor with a micromixer was introduced in attempt to enhance the amination reaction of 4-nitrochlorobenzene in terms of the process efficiency and safety. It was found that the reaction system containing a large excess of ammonia water can become homogeneous at high temperature. Thus, as both micromixing and the heat transfer performance were guaranteed, the set-up combining a micromixer and a microtube reactor enabled the reaction to exhibit homogeneous reaction characteristics, meeting the demands of efficiency and reliability. Furthermore, using a multi-channel sampling system connected behind the micromixer, the reaction kinetics were studied in a modified “stop flow” mode, which is adaptable for in-situ fast homogenization, high temperature, and high pressure. The reaction conditions were screened and a kinetic model was developed. Accordingly, we propose and verify a self-circulation strategy to reduce the burden of ammonia separation and recovery in a continuous tubular reactor system.
研究领域:
化学工程
·
反应工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yun Ji,Zhelin Song,Yu Xu,Yanlin Zhang
In this work, typical refractory pollutant Rhodamine B (RhB) was effectively degraded by Cu-Fe LDHs/Bi 2 WO 6 composite in the photo-Fenton process. The hydrothermal synthesis of Cu-Fe LDHs/Bi 2 WO 6 composite with ethylene glycol as reductant created the multivalent coexistence of the same metal element to achieve a self-circle redox reaction between metals. The photo-Fenton process by Cu-Fe LDHs/Bi 2 WO 6 incredibly eliminated the limitation of strong acidic pH value applied in the Fenton process. ∙OH generated by Cu-Fe LDHs/Bi 2 WO 6 was 5 times that of Cu-Fe LDHs during the photo-Fenton process. The complete degradation of RhB in the photo-Fenton process under the optimal conditions of initial pH= 6, 5 mmol/L of H 2 O 2 , and 1 g/L of Cu-Fe LDHs/Bi 2 WO 6 dosage was far more than 46% of RhB degradation in the photocatalytic process and 76% of RhB degradation in the Fenton process. Cu-Fe LDHs/Bi 2 WO 6 composite exhibited the excellent redox ability, electron transfer ability and reusability during the photo-Fenton process. The acceleration of Fe 3+ /Fe 2+ cycles in the Cu-Fe LDHs/Bi 2 WO 6 /H 2 O 2 /Vis system was mainly ascribable to the combination of efficient transfer of photogenerated electrons and self-circle redox of Fe 3+ /Cu + . It is expected for the promising application of multivalent bimetallic photo-Fenton catalysts and rendering enlightenments for photo-Fenton catalytic oxidation reaction.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xiaohai Yan,Yuning Zhao,Gengan Du,Qi Guo,Hong Chen,Qian He,Qiannan Zhao,Huanfeng Ye,Jianlong Wang,Yahong Yuan,Tianli Yue
Tools to detect low molecular weight mycotoxin patulin (PAT) are urgently needed because of its harm to human health. Here, we report a simple, effective, and sensitive fluorescent aptasensor based on sulfur quantum dots encapsulated in MOF-5-NH 2 ( [email protected] 2 ) and self-cycling catalyzed hairpin assembly (scCHA) for the detection of PAT in apple juice. The [email protected] 2 synthesized by a “bottle-around-ship” solvothermal method works as a fluorescent probe and offers enhanced fluorescence intensity and good water-solubility versus MOF-5-NH 2 due to the encapsulation of water-soluble SQDs . Meanwhile, the scCHA designed by the two DNA hairpins is initiated after the formation of PAT/aptamer, which further recycles PAT to effectively capture multiple fluorescence probes ( [email protected] 2 ) and amplify the detection signal. Attributed to the synergistic effect between the strong fluorescence intensity of [email protected] 2 and the efficient PAT utilization of scCHA, the fluorescent aptasensor exhibits high sensitivity with detection limits as low as 0.753 pg/mL. The system has satisfactory specificity, anti-interference, and reproducibility (RSDs of intra-assay and inter-assay were 3.24% and 8.60%, respectively). The recoveries in apple juice were between 89.03% and 107.67%, which were with good consistency versus high-performance liquid chromatography (HPLC). These data collectively show that the developed fluorescent aptasensor has a good practical application value.
研究领域:
分析化学
·
纳米技术
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Jing Gao,Yang Cao,Tao Wu,Yujiang Li
In this study, roasted spent HDS ash (sHDSc-A) was used for the first time to catalytically pyrolyze oily spent HDS catalysts (sHDSc) to improve the yield and quality of pyrolysis oil. The results showed that sHDSc-A promoted the decomposition of coke in oily sHDSc, resulting in the recovery of more oil and gas. Meanwhile, sHDSc-A significantly improved the quality of the pyrolysis oil. They inhibited the aromatization of alkanes to increase the saturation of the pyrolysis oil from 59.39% to 74.25% and the H/C radio from 1.62 to 1.72; promoted the decomposition of long-chain alkanes to increase the content of C11–C22 from 41.97% to 61.99%; enhanced the conversion of carboxylic acids to ketones led to the reduction of heteroatomic compounds such as N (56.10%–45.39%), S (66.95%–56.59%), and O (45.26%–26.70%) in the pyrolysis oil. The promotion of sHDSc-A in the pyrolysis process is attributed to the catalytic effect of the metal oxides in sHDSc-A. Among them, Al 2 O 3 and Fe 2 O 3 can promote decarboxylation of carboxylic acids and reduce O mobility, while MoO 3 and Fe 2 O 3 play a significant role in reducing coke and increasing pyrolysis oil. NiO can also promote methane vapor reforming, and thus increase the production of H 2 in non-condensable gas. This study achieves self-circulation of oily sHDSc with a “waste-treatment-waste” strategy that presents the advantage of value-added energy recovery and waste reuse.
研究领域:
化学工程
·
环境科学
·
能源回收
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Guanhong Liu,Rongze Tang,Congcong Wang,Dehong Yu,Zhenxin Wang,Haochen Yang,Jia Wei,Shunhua Zhu,Fenglei Gao,Feng Yuan,Bin Pan
Cuproptosis and ferroptosis are difficult to synergize in tumor suppression due to their spatiotemporal asynchrony and mechanistic dispersion. Therefore, we proposed a new paradigm of Ferroptosis-Cuproptosis self-recycling. An iron‑sulfur cluster (Fe-S) metabolic collapse was constructed by hyaluronic acid (HA)-functionalized bimetallic nano-enzymes (HA@CuCo-NC) to initiate this tumoricidal mechanism. HA@CuCo-NC specifically accumulates in osteosarcoma cells through HA-mediated targeting. The multi-enzyme activity triggers a surge of reactive oxygen species (ROS) in the tumor microenvironment, which, along with Co 2+ , induces ferroptosis. This leads to severe mitochondrial damage and glutathione (GSH) depletion, which in turn activates the cuproptosis cascade. Cuproptosis causes Fe-S protein degradation and Fe 2+ release into the labile iron pool (LIP) by inhibiting Fe-S cluster formation and dihydrolipoamide acetyltransferase (DLAT) oligomerization. The released Fe 2+ enhances oxidative stress and promotes membrane disassembly via the Fenton reaction. The two act synergistically to form a dynamic self-reinforcing cycle: Ferroptosis-related mitochondrial damage exacerbates the toxicity of Cu 2+ . Cuproptosis-released Fe 2+ further activates ferroptosis. In vivo experiments demonstrated that HA@CuCo-NC significantly inhibited the growth of osteosarcoma in situ without causing systemic toxicity. This research introduces a novel approach to treating solid tumors by reconstructing the metabolic interaction network of copper and iron.
研究领域:
肿瘤学
·
纳米医学
·
分子生物学
·
细胞死亡机制
·
金属代谢
·
转化医学
·
氧化应激
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）