JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Manman Mu,Lingqi Meng,Siting Ma,Wenjuan Chen,Xiaohong Yin,Guoyi Bai
Covalent organic frameworks (COFs) equipped with controllable porosity and excellent structural stability are regarded as promising candidates for photocatalytic CO 2 reduction, yet some inherent drawbacks including low CO 2 activation and sluggish charge carriers’ transfer properties urgently need to be addressed. Herein, we developed an imine-bridged strategy to construct ZnO/COF heterostructure by integrating donor–acceptor COF (TAPT-DMTP COF) on the surface of amino-modified ZnO for photocatalytic CO 2 reduction. The optimal photocatalyst, N ZnO/TAPT-DMTP COF-3, exhibited superior photocatalytic activity for reducing CO 2 to CO and CH 4 , which was significantly higher than pristine COF and non-covalently bridged ZnO/TAPT-DMTP COF. Experimental and photo-electrochemical results reveal that the microstructure of TAPT-DMTP COF, interfacial imine-bridging and S-scheme heterojunction play a crucial role in promoting photoinduced charge transfer and separation, thus improving photocatalytic efficiency. Moreover, in-situ characterization and theoretical calculations indicate the photoinduced electrons transfer from N ZnO to TAPT-DMTP COF upon hybridization, and this S-scheme heterostructure dramatically lowers the energy barrier of rate-determining step from *COOH to *CO. This work provides insight into the covalent-linked COF-based S-scheme photocatalyst and highlights its vital role in enhancing CO 2 reduction.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Xia Liu,Ming Chen,Dengjun Wang,Feng Du,Nan Xu,Wu Sun,Zhaoxiang Han
Iron-based materials such as nanoscale zerovalent iron (nZVI) are effective candidates to in situ remediate hexachromium (Cr(VI))-contaminated groundwater . The anaerobic bacteria could influence the remediation efficiency of Cr(VI) during its cotransport with nZVI in porous media . To address this issue, the present study investigated the adsorption and reduction of Cr(VI) during its cotransport with green tea (GT) modified nZVI (nZVI@GT) and iron sulfides (FeS and FeS 2 ) in the presence of D. vulgaris or S. putrefaciens in water-saturated sand columns. Experimental results showed that the nZVI@GT preferred to heteroaggregate with FeS 2 rather than FeS, forming nZVI@GT-FeS 2 heteroaggregates. Although the presence of D. vulgaris further induced nZVI@GT-FeS 2 heteroaggregates to form larger clusters, it pronouncedly improved the dissolution of FeS and FeS 2 for more Cr(VI) reduction associated with lower Cr(VI) flux through sand. In contrast, S. putrefaciens could promote the dispersion of the heteroaggregates of nZVI@GT-FeS 2 and the homoaggregates of nZVI@GT or FeS by adsorption on the extracellular polymeric substances , leading to the improved transport of Fe-based materials for a much higher Cr(VI) immobilization in sand media. Overall, our study provides the essential perspectives into a chem-biological remediation technique through the synergistic removal of Cr(VI) by nZVI@GT and FeS in contaminated groundwater. Environmental implication The green-synthesized nano-zero-valent iron particles (nZVI@GT) using plant extracts (or iron sulfides) have been used for in situ remediation of Cr(VI) contaminated groundwater. Nevertheless, the removal of Cr(VI) (including Cr(VI) adsorption and Cr(III) generation) could be influenced by the anaerobic bacteria governing the transport of engineered nanoparticles in groundwater. This study aims to reveal the inherent mechanisms of D. vulgaris and S. putrefaciens governing the cotransport of nZVI@GT combined with FeS (or FeS 2 ) to further influence the Cr(VI) removal in simulated complex groundwater media. Our findings provides a chemical and biological synergistic remediation strategy for nZVI@GT application in Cr(VI)-contaminated groundwater.
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MOLECULAR NUTRITION & FOOD RESEARCH
·
2024
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IF 4.5
Kelin Li,Victoria A. Uyanga,Xiaojuan Wang,Hongchao Jiao,Jingpeng Zhao,Yunlei Zhou,Haifang Li,Hai Lin
Scope Allicin, a product of enzymatic reaction when garlic is injured, plays an important role in maintaining glucose homeostasis in mammals. However, the effect of allicin on glucose homeostasis in the state of insulin resistance remains to be elucidated. This study investigates the effect of allicin on glucose metabolism using different muscle fibers in a chicken model. Methods and results Day-old male Arbor Acres broilers are randomly divided into three groups and fed a basal diet supplemented with 0, 150, or 300 mg kg −1 allicin for 42 days. Results show that allicin improves the zootechnical performance of broilers at the finishing stage. The glucose loading test (2 g kg −1 body mass) indicates the regulatory role of allicin on glucose homeostasis. In vitro results demonstrate allicin increases glutathione (GSH) level and the expression of cystathionine γ lyase (CSE), leading to endogenous hydrogen sulfide (H 2 S) production in M. pectoralis major (PM) muscle-derived myotubes. Allicin stimulates adenosine monophosphate-activated protein kinase (AMPK) S-sulfhydration and AMPK phosphorylation to promote glucose uptake, which is suppressed in the presence of d , l -propargylglycine (PAG, a CSE inhibitor). Conclusion This study demonstrates that allicin induces AMPK S-sulfhydration and AMPK phosphorylation to promote glucose uptake via the CSE/H 2 S system in a muscle fiber-dependent manner.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
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IF 14.3
Jun He,Haoran Qian,Guodong Peng,Hongyu Hu,Li Jiang,Xiaojun He
It is a big challenge to tune the structure and composition of carbon-based anode materials to increase the active sites by a green synthesis strategy for potassium ion batteries (PIBs). Herein, the N/F/S co-doped three-dimensional (3D) interconnected carbon nanosheets (NFS-CNSs) were synthesized from coal tar pitch (CTP) through a green and low-temperature treatment process for the first time. The as-obtained NFS-CNS 600 features 3D interconnected ultra-thin carbon nanosheets with abundant active sites, tunable N/F/S species, and enlarged carbon interlayer spacing. The density functional theory calculation results demonstrate that NFS-CNSs exhibit the highest electron density and most negative K + adsorption energy (–0.59 eV) compared to single or double-atom doping, thereby enhancing the storage performance of K + . As an anode for PIBs, the NFS-CNS 600 exhibits good cycle stability (98.2 % capacity retention after 200 cycles at 0.2 A g −1 ), high capacity (409.1 mAh g −1 at 0.05 A g −1 ) and rate performance (179.5 mAh g −1 at 5 A g −1 ). Besides, the NFS-CNS 600 anode also displays outstanding sodium storage performance. This work offers a green strategy to synthesize CTP-based anode materials from coal chemical by-products for high-performance PIBs.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ming Li,Xuemeng Zhang,Dongqing Wang,Xiaofei Fan,Qianyong Cao,Huining Xiao,Shiwei Guo,Chungang Yuan,Yuling Zhang
Nanofiltration membranes are extensively implemented in water treatment, particularly for the efficient interception of toxic heavy metal ions. This work introduces a novel functional membrane fabricated via interfacial polymerization, incorporating nitrogen and sulfur co-doped carbon dots (N, S-CDs) as additives to enhance mercury removal from aqueous solutions. The integration of carbon dots has been demonstrated to significantly augment the membrane’s hydrophilicity, thereby improving the pure water flux. Moreover, it modulates the crosslinking degree of the polyamide layer, enhancing mercury retention. The N, S-CDs, due to their high selectivity for Hg (II), confer the modified membrane with fluorescence detection capabilities, allowing for the precise quantification of mercury rejection. The membrane achieved a remarkable Hg (II) retention rate of 94.85 %, with a pure water flux of 10.68 L m −2 h −1 bar −1 , and attained a detection limit of 5.49 × 10 −7 M for Hg (II). The durability and reusability of the membrane are substantiated by soaking and recycling trials, underscoring the stable encapsulation of N, S-CDs within the nanofiltration matrix.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xiaoyan Lu,Xinhui Jiang,Jindou Hu,Junhong Li,Anjie Liu,Zhenjiang Lu,Jing Xie,Yali Cao
The p–n type charge transfer pathway plays an active role in efficient carrier separation and enhancement of photocatalytic activity, but it will also reduce the redox ability of photogenerated carriers. Herein, the anchored amino molecular layer acts as a heterojunction conversion switch to transform Cu2O/T-N from a p–n to an S-scheme heterojunction. Following this transformation, the redox ability of carriers can be dramatically enhanced: the reduction potential of photogenerated electrons increases from −0.49 eV to −1.68 eV, and the oxidation potential of photogenerated holes increases from 0.32 eV to 2.33 eV. Therefore, the optimized Cu2O/T-N S-scheme heterojunction photocatalyst exhibits superior photocatalytic performance for hydrogen evolution (up to 41.85 mmol g−1, 64 times higher than that of pure TiO2) and nitrogen fixation (as high as 18 mmol gCu2O−1 h−1). Moreover, the post-conversion carrier transfer pathway also prevents the accumulation of holes on Cu2O, alleviating the photocorrosion caused by hole oxidation. Hence, the catalytic activity remains stable during photocatalytic cycling for up to 50 h. This study provides a straightforward and practical method for enhancing the redox capacity of photocatalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Guizhen Liu,Shanshan Zhang,Yutian Cai,Yongzhi Cheng,Yingli Zhu,Pingan Chen,Hui Luo,Xiangcheng Li,Fu Chen
Flexible manipulations of morphology and composition have been considered as an art to achieve excellent microwave absorption performance for absorbers derived from metal-organic frameworks (MOFs). In this work, a strategy combining ligand-exchange induced hollow engineering and high-temperature one-step sulfuration has been proposed to fabricate the Co 9 S 8 /Co@N, S dual-doped carbon-based absorbers with tailored solid, yolk-shelled and entirely hollow polyhedral morphologies. The progressive hollow engineering not only enables composition control in the sulfuration process, but also endows the proposed absorbers with superior microwave absorption capacity due to the enhanced conductivity loss and Maxwell-Wagner polarization as well as optimized impedance matching. The yolk-shelled Co 9 S 8 /Co@N, S dual-doped carbon-based composite achieves a broad effective absorption bandwidth of 5.13 GHz at 1.88 mm with 20 wt% loading and realizes a minimum microwave loss of − 51.78 dB @ 11.63 GHz with 2.37 mm. This work reveals that the joint strategy of ligand-exchange induced hollow engineering and gas-solid reactive thermal process is an effective path to construct high-efficient lightweight multi-interfacial microwave absorbers for addressing the electromagnetic pollutions.
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Small
·
2024
·Vol. 20
·期 29
·2310087
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IF 13
Yunfeng Qiu,Yongxia Zhang,Miao Yu,Xinyi Li,Yanxia Wang,Zhuo Ma,Shaoqin Liu
Simultaneously improving electrochemical activity and stability is a long-term goal for water splitting. Herein, hierarchical N-doped carbon nanotubes on carbon nanowires derived from PPy are grown on carbon cloth, serving as a support for NiCo oxides/sulfides. The hierarchical electrodes annealed in N 2 or H 2 /N 2 display improved intrinsic activity and stability for hydrogen evolution reaction (HER) and glucose oxidation reaction. Compared with Pt/C||Ir/C in alkaline media, the glucose electrolysis assembled with electrodes exhibits a cell voltage of 1.38 V at 10 mA cm −2 , durability for >12 h at 50 mA cm −2 , and resistance to glucose/gluconic acid poisoning. In addition, electrocatalysts can also be applied in ethanol oxidation reactions. Systematic characterizations reveal the strong interactions between NiCo and N-doped carbon support-induced partial charge transfer at the interface and regulate the local electronic structure of active sites. Density functional theory calculations demonstrate that the synergistic effect between N-doped carbon supports, metallic NiCo, and NiCo oxides/sulfides optimize the adsorption energy of H 2 O and the H* free energy for HER. The energy barrier of the dehydrogenation of glucose effectively decreased. This work will attract attention to the role of metal-support interactions in enhancing the intrinsic activity and stability of electrocatalysts.
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CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Nguyen Trung Dung,Vu Dinh Thao,Nguyen Phuong Thao,Cao Thi Minh Thuy,Nguyen Hong Nam,Le Viet Ngan,Kun-Yi Andrew Lin,Ta Cong Khiem,Nguyen Nhat Huy
Biochar is an environmentally friendly material with various potential applications in water treatment. Herein, nitrogen and sulfur co-doped biochars (N,S-BCD-X) were fabricated from durian peel as an agricultural waste by coupling with thiourea via thermal treatment to activate peroxymonosulfate (PMS) for degradation of ofloxacin (OFX) in water. The OFX removal using PMS activated by N,S-BCD-800 was over 85 % after 120 min of reaction, which was 17.78 times higher than that by pure BCD. The OFX degradation was not inhibited over a wide pH range of 3 to 9. Through radical quenching tests, electron paramagnetic resonance, and DFT calculations, 1 O 2 was revealed as the key reactive species in the N,S-BCD-800/PMS system because of PMS’s elongated O-O bond-induced promoted generation of • OH and SO 4 • - with an insignificant contribution and the generation of 1 O 2 via various reactions associated with • OH, SO 4 • - , and PMS. The boosted catalytic activity of N,S-BCD-800 mainly came from synergetic effect of N and S co-doping due to the enhanced electron-donating capability caused by decrease in the work function. Furthermore, the increase in electrostatic potential and the difference in electron density and atomic charge could also account for stronger adsorption and activation of PMS on N,S-BCD-800 to generate more 1 O 2 besides the N,S-BCD-800/PMS complex as a minor species responsible for the degradation of OFX via electron transfer. Finally, the attainment of high efficiency of N,S-BCD/PMS for OFX degradation in various water matrices as well as after 5 cycles proved that N,S-BCD had high stability and applicability.
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DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 10
·4671-4679
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IF 3.5
Xinlei Zhang,Xia Liu,Peng Liu,Bohan Li,Yan Xu
Metal-free room-temperature phosphorescent (RTP) materials with changeable colors have attracted great attention in anti-counterfeiting information encryption. Most ultralong-lifetime RTP (URTP) luminophores are traditionally obtained through heavy atom effects via enhancing the spin–orbit coupling efficiency. Here, we report the self-assembly of URTP carbon dots (CDs) using diphenylaminourea as the precursor through a thermal-evaporation assisted covalent-binding approach in the presence of boric acid (BA). The BA-functionalized diphenylaminourea-derived CDs (denoted as D-CDs1.5/BA composites) show a rigid network structure with B–C linkages connected to the surface of the CDs, which can effectively suppress the free vibration of CDs to promote intersystem crossover, finally resulting in an excellent URTP afterglow performance. They feature a low singlet–triplet energy gap and reduced nonradiative attenuation properties. As a result, the D-CDs1.5/BA composites exhibit a bifunctional fluorescence/phosphorescence performance with a high phosphorescence quantum efficiency (12.67%) and an ultra-long green afterglow phosphorescence lifetime of up to 3.66 s. A high-level information encryption and fingerprinting description based on the URTP D-CDs1.5/BA composites were then investigated. This work contributes to the feasible design and preparation of novel URTP CD materials with both ultra-long afterglow and a high phosphorescence efficiency, making them promising candidates for advanced anti-counterfeiting applications.
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FITOTERAPIA
·
2024
·
IF 2.5
Hongliu Xie,Fang Lin,Fei Shi,Elaine Johnstone,Yaqi Wang,Yang An,Jun Su,Jiayin Liu,Qinghai Dong,Jihua Liu
As one of the metabolites of ginseng, 20( S )-protopanaxadiol (PPD) is a compound with dammarane-type tetracyclic triterpene, which performs a wide range of anticancer activities. In this study, PPD was used as a lead. A series of compounds were synthesized respectively with 11 amino acids through esterification and were evaluated for their cytotoxicity against several cancer cell lines. One of the synthetic products (PL) exhibited potent inhibitory effect on Huh-7 cells relative to that of PPD in vitro. Subsequently, the Annexin V-FITC /PI staining assay was used to verify that PL induced apoptosis of Huh-7 cells in a dose-dependent manner. A UPLC-Q/TOF-MS analysis method was established and validated for assessing pharmacokinetic properties after the administration of PPD and PL in rats. The results showed that compared with PPD, T 1/2 of PL in rats was prolonged, and the peak time was delayed, resulting in broader tissue distribution of the compound in the body. In addition, the targets of PL against several cancers were predicted and analyzed via network pharmacology. Molecular docking simulations demonstrated that PL interacted with the active sites of the above targets. In conclusion, this study provided a theoretical basis for the development and clinical application of anti-tumor activity of PPD.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
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IF 3.9
Wenhui Xiong,Zijie Cai,Zihao Wang,Zhongkai Wu,Wencen Mei,Zhizheng Wu,Dingbang Liu,Shiming Yang,Weiping Zhou,Zhenzhi Cheng,Jun Wang,Guangsheng Luo
Multivariate transition metal sulfides and porous nanosheet architectures hold promising potential for applications for the energy-related application. Nevertheless, the addition of polymer binders and conductive agents can adversely affect their electrochemical performance. In this work, we present self-assembled Ni-Co sulfide nanosheet arrays growing on foamed Ni (Ni-Co-S@NF). Ni-Co-S@NF electrode materials are synthesized through the complete sulfidation of interconnected ultrathin nanosheets derived from NiCo layered double hydroxides. The highly conductive nickel foam facilitates electron transfer while the 3D network structure promotes electrolyte diffusion and penetration. Hence, porous Ni-Co-S@NF materials presents the excellent specific capacitance as 1286.6C g −1 in 1 A g −1 and retained 70 % of its original capacity over 5000 charge–discharge cycles. Furthermore, we assemble an asymmetric supercapacitor used active carbon as negative-electrode material and Ni-Co-S@NF as positive-electrode material. This device delivers the specific energy is 74.0 Wh kg −1 and specific power of 850.0 W kg −1 .
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危险品化学品经营许可证（带存储）