JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Ming Xu,Yu Ma,Lei Wang,Shu Huang,Liming Chen,Rong Liu,Zikun Li,Guohui Yuan
Transition metal selenides (TMS) have been used to prepare hundreds of electrode materials for ion batteries due to their superior theoretical capacity, but have been repeatedly limited by the sluggish reaction kinetics and the enormous volume change during the repeated charge/discharge process. Here, we report a facile strategy to fabricate organic–inorganic composites by engineering a unique chemical bonding interface between TMS and conductive polymers. For the first time, poly(3,4-ethylenedioxythiophene) (PEDOT) is utilized to encapsulate iron diselenide (FeSe 2 ) nanoparticles by in situ polymerization, and the Fe-S bonds are meanwhile formed at the interface of FeSe 2 and PEDOT. The experimental analysis demonstrates the stability of Fe-S bonds during the sodiation/desodiation process and after long cycling, which can serve as a “bridge” for fast charge transfer and also serve as a “rivet” to stabilize the composite structure. When used for sodium ion storage, the composite offers an exceptionally long lifetime of up to 17,000 loops at 10 A/g without capacity degradation. In addition, it delivers a high specific capacity of 490.4 mAh/g and retains 60 % when the current density is amplified 150 times. The assembled full cell also exhibits excellent cycling stability. This work will provide a feasible way to improve the metal oxide/sulfide/selenides for long-life ion batteries.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Lan Ding,Jing Xu,Zeyu Zhang,Kezhen Qi,Ge Jin
Electrocatalytic hydrogen evolution reaction (HER) via water splitting is a prospective technology for achieving the sustainable production of hydrogen. So, ruthenium-based electrocatalysts have been extensively studied. However, metallic ruthenium tends to agglomerate due to the high cohesive energy, resulting in decreased HER performance in practical usage. Introducing sufficient support for dispersing and immobilizing ruthenium-based species is a viable way to enhance the utilization efficiency. MXene-based materials with unique surface termination groups, superior chemical stability, high specific surface area and favorable electrical conductivity have received significant attention as low-cost carriers for the development of active catalysts in HER. Herein, nitrogen (N) and sulfur (S) atom-doped titanium carbide (Ti 3 C 2 ) quantum dots (QDs) were successfully synthesized as efficient carriers for anchoring ultra-small ruthenium nanoparticles (NPs) toward electrocatalytic HER. Electrochemical tests reveal that the resultant N,S-Ti 3 C 2 QDs/Ru displays superior HER performance with low overpotentials of 28, 25 and 56 mV at 10 mA cm −2 current density in 0.5 M H 2 SO 4 , 1 M KOH and 1 M PBS solutions, respectively. Such a low overpotential is comparable to most previously reported non-metallic catalysts, Ru-based electrocatalysts and commercial Pt/C. In addition, N,S-Ti 3 C 2 QDs/Ru displays extraordinarily long-term stability over a relatively wide pH range and is indeed a kind of pH-universal catalyst for hydrogen evolution. Furthermore, density functional theory (DFT) calculations demonstrate that the interactions between metal Ru and N,S-Ti 3 C 2 MXene QDs effectively regulate the electronic structure of the active site Ru, lowering the energy barrier of the electrocatalytic HER intermediate, thus dramatically enhancing the activity for N,S-Ti 3 C 2 QDs/Ru. This work proposes a novel approach to functionalize MXene quantum dots for use as low-cost electrocatalysts with promising practical applications in renewable energy conversion.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Yaping Liu,Chao Pan,Xianjie Li,Hailin Zhang,Zhijie Shang,Hongbing Song
Oxidation, a pivotal process in organic synthesis, is essential for the conversion of various biomass derivatives, including 5-hydroxymethylfurfural (HMF), into valuable chemicals. This research employs poly(ionic liquid)s (PILs) as supports to fabricate Au/PILs catalysts, which are subsequently utilized in the oxidative esterification of HMF to produce dimethyl 2,5-furandicarboxylate (FDMC). The modification of PILs demonstrates that catalyst’s performance is optimized when the PILs anion (IL: EGDMA = 1: 4) is [Tf 2 N - ]. The presence of the [Tf 2 N - ] group is essential for charge transfer between the carrier and the active metal Au, thereby enhancing the catalytic reaction. Thermogravimetric analysis (TG) reveals the exceptional thermal stability of the 2 % Au/PILs-Tf 2 N-14 catalyst. The efficient conversion of HMF to FDMC is achieved using the 2 % Au/PILs-Tf 2 N-14 catalyst at 120°C, 12 h, with CH 3 ONa (0.75 equiv.) and 2 MPa O 2 , yielding a HMF conversion ( C HMF ) of 96.41 % and a FDMC selectivity ( S FDMC ) of 100 %. The heterogeneous catalyst 2 % Au/PILs-Tf 2 N-14 maintains high catalytic activity after multiple cycling experiments. A catalyst based on precious metal-loaded PILs was utilized to achieve efficient and selective conversion of HMF to FDMC under low loading conditions. This approach not only offers valuable insights for future research but also promotes the shift towards renewable energy sources. Additionally, the adsorption behavior of O 2 on Au 8 clusters and the interaction between the reaction substrate HMF and [Tf 2 N - ] were examined through density functional theory (DFT) calculations, providing theoretical backing for further investigation.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 43
·55836-55849
·
IF 0
Kang Lu,Wang Ying,Du Ruihan,Zhang Jinpu,Kang Chunli
In this paper, a modification of g-C 3 N 4 was carried out by combining non-metal doping with the construction of heterojunctions, and a type II heterojunction composite, S/g-C 3 N 4 @β-Bi 2 O 3 , was prepared. The phase structure, morphology, elemental composition, valence band structure, and light absorption performance of the photocatalyst were analyzed using characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV–vis diffuse reflectance spectroscopy (UV–vis DRS). The performance of the composite photocatalyst in the photocatalytic degradation of gaseous toluene, one of the typical volatile organic compounds (VOCs), under simulated solar light was studied. The effects of preparation conditions, toluene concentration, and recycling on the photocatalytic performance of the composite photocatalyst were investigated. The results show that under the optimal preparation conditions, S/g-C 3 N 4 @β-Bi 2 O 3 achieved a degradation efficiency of 74.0% for 5 ppm toluene after 5 h of light irradiation. Although the degradation efficiency decreased to 61.2% after five cycles, it maintained 83% of its initial activity, indicating good stability of the composite photocatalyst. Free radical quenching experiments demonstrated that h + was the main active species in the photocatalytic degradation of toluene, followed by ·O 2 − . Based on all experimental results, the migration law of photo-generated charges was analyzed, and a possible photocatalytic mechanism was proposed. In this study, a new material was obtained for the photocatalytic removal of VOCs by improving the photocatalytic properties of g-C 3 N 4 .
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
·
IF 4.2
Yajie Wang,Yanan Gao,Jingxuan Yang,Bin Liu
C 3 N 5 is emerging as an important visible light catalyst because of its narrow band gap, nontoxicity and thermal stability. Herein, sulfur-doped g-C 3 N 5 (SCN) was prepared by copolymerization of thioacetamide (TAA) and 3-amino-1,2,4-triazole (3-AT). Then copper nanoparticles (Cu NPs) were anchored onto the SCN framework, resulting in the formation of Cu/SCN. It was found that the average H 2 production rate of SCN and Cu/SCN was 0.76 and 1.34 mmol g −1 h −1 , which was much higher than that of C 3 N 5 , respectively. Acting as a new active spots, sulfur doping effectively reduces the band gap of g-C 3 N 5 , and the formation of S-Cu bonds further creates an efficient electron transport pathway. As a result, Cu/SCN possesses a broader visible light absorption spectrum, stronger reduction capability, and greater efficiency in photo-induced carrier separation and transfer. Therefore, this work introduces a novel strategy for design of high efficiency photocatalytic H 2 evolution carbon nitride through non-noble metal and sulfur anchoring junction.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Liming Zeng,Yongyang Zhu,Daifeng Wu,Huayue Cheng,Qing Zhou
To improve the limited kinetics of alkaline hydrogen evolution reaction (HER), herein, a three-dimensional porous catalyst has been constructed based on the design concept of bi-directional electron modulation and chemical environment regulation of non-metallic and oxophilic transition metal elements with obvious differences in electronegativity on hybrid carbon layer-coated iridium/iridium oxide heterostructure. The Ir/IrO 2 @(N,S)-C possesses significantly superior catalytic activity and electrochemical stability towards alkaline HER with an overpotential of 150 mV reaching 50 mA cm −2 from LSV curve and an increment of 63 mV after 200 h of degradation test at 10 mA cm −2 in 1 M KOH, much lower than 277 mV and an elevation of 116 mV just after 25 h in 0.5 M H 2 SO 4 . The strongly electronegative non-metallic elements effectively modulate the electronic states of iridium/iridium oxide, the ratio of metallic states, and the oxophilic environment of the carbon layer, which enables the catalyst surface favorable for the moderate adsorption of water molecules and intermediates. The material engineering strategy offers a new insight for the development of high-performance catalysts towards water electrolysis based on homologous active species.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Weikang Ling,Jiliang Ma,Min Hong,Runcang Sun
Photocatalytic CO 2 reduction and biomass selective oxidation have considerable practical implications in addressing environmental challenges. However, developing efficient photocatalyst is the key to realize the mass-market applications. Herein, an MoS 2 @GCN S-scheme heterojunction, rich in sulfur vacancies (Sv), was fabricated by a dicyandiamide-blowing and calcination strategy using NH 4 Cl as the gas template. With the synergistic effects of Sv and the S-scheme charge migration mechanism, the 30%-Sv-MoS 2 @GCN demonstrated exceptional performance, showcasing a CO evolution rate of 68.3 μmol g −1 h −1 and a xylonic acid yield of 64.2%, without using any sacrificial agents. The formation of Sv was confirmed through electron paramagnetic resonance (EPR) analysis. The S-scheme charge transfer mechanism of the Sv-MoS 2 @GCN heterojunction was verified by in-situ X-ray photoelectron spectroscopy (XPS) spectra, EPR analysis, and density functional theory (DFT) calculations. This study establishes a framework for enhancing photocatalytic CO 2 reduction and biomass selective oxidation by regulating charge transfer through sensible structural design.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2024
·
IF 6.2
Wenmiao He,Zhiwei Liu,Hongchao Zhang,Qian Liu,Zhenkun Weng,Dongmei Wang,Wenhui Guo,Jin Xu,Dayong Wang,Zhaoyan Jiang,Aihua Gu
Bisphenol S (BPS) is widely presented and affects aging with unclear mechanisms. Here, we applied C. elegans to evaluate the effects of BPS on lifespan and healthspan and to investigate the underlying mechanisms. Both early-life and whole-life exposure to BPS at environmentally relevant doses (0.6, 6, 60 μg/L) significantly decreased lifespan, and healthspan (body bend, pharyngeal pumping, and lipofuscin accumulation). BPS exposure impaired mitochondrial structure and function, which promoted ROS production to induce oxidative stress. Furthermore, BPS increased expressions of the insulin/IGF-like signaling (IIS). Also, BPS inhibited expression of the IIS transcription factor daf-16 and its downstream anti-oxidative genes. Quercetin effectively improved BPS-induced oxidative stress byreversing BPS-regulated IIS/ daf-16 pathway and anti-oxidative gene expressions. In daf-2 and daf-16 mutants, the effects of BPS and quercetin on lifespan, healthspan, oxidative stress, and anti-oxidative genes expressions were reversed, demonstrating the requirement of IIS/ daf-16 for aging regulation. Molecular docking and molecular dynamics simulations confirmed the stable interaction between DAF-2 and BPS mainly via three residues (VAL1260, GLU1329, and MET1395), which was attenuated by quercetin. Our results highlighted that adverse effects of BPS on impairing lifespan and healthspan by affecting IIS/ daf-16 function against mitochondrial stress, which could be inhibited by quercetin treatment. Thus, we first revealed the underlying mechanisms of BPS-induced aging and the potential treatment.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiamin Li,Changheng Chen,Jiangwen Bai,Yuehui Jin,Chongfeng Guo
Although self-polarized piezoelectric semiconductor photocatalysts significantly enhance the separation of internally generated photocarriers, their photocatalytic performance is constrained by insufficient internal polarisation and a wide bandgap. Additionally, the low concentration of oxygen in contaminated water limits the effectiveness of such photocatalysts. To the best of our knowledge, this study was the first to determine that the piezoelectric properties of Bi 2 MoO 6 (BMO), was due to the polarisation displacement of the MoO 6 octahedron that occurred along the x -axis, as revealed through density functional theory (DFT) calculations. Subsequently, the self-polarisation characteristics of BMO were enhanced and the bandgap was reduced through Fe 3+ doping, as confirmed via atomic force microscopy, hysteresis loop measurements and DFT analysis, resulting in an increase in surface potential from 30.41 to 46.80 mV. Furthermore, an S-scheme WO 3 /Bi 2 MoO 6 :Fe 3+ heterojunction was developed to improve the surface separation of photoelectron–hole pairs. The piezoelectric photocatalytic performance of this sample was evaluated through the degradation of rhodamine B (RhB) and oxygen generation. Results indicated that the degradation rate of RhB reached 98.63 % within 25 min under the synergistic influence of light and ultrasound, which was 1.85 and 9.60 times higher than those of Bi 2 MoO 6 and WO 3 , respectively. Furthermore, the optimal oxygen production efficiency was 167.41 µmol·g −1 ·h −1 . This study provides a novel approach for designing more efficient piezoelectric photocatalysts.
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Journal of Animal Science and Biotechnology
·
2024
·Vol. 15
·期 1
·1-18
·
IF 6.3
Shang Lijun,Yang Fengjuan,Chen Qingyun,Dai Ziqi,Yang Guangxin,Zeng Xiangfang,Qiao Shiyan,Yu Haitao
Background The antibacterial and immunomodulatory activities of bacteriocins make them attractive targets for development as anti-infective drugs. Although the importance of the enteric nervous system (ENS) in the struggle against infections of the intestine has been demonstrated, whether it is involved in bacteriocins anti-infective mechanisms is poorly defined. Results Here, we demonstrated that the bacteriocin Microcin J25 (J25) significantly alleviated diarrhea and intestinal inflammation in piglets caused by enterotoxigenic Escherichia coli (ETEC) infection. Mechanistically, macrophage levels were significantly downregulated after J25 treatment, and this was replicated in a mouse model. Omics analysis and validation screening revealed that J25 treatment induced significant changes in the dopaminergic neuron pathway, but little change in microbial structure. The alleviation of inflammation may occur by down-regulating dopamine receptor (DR) D1 and the downstream DAG-PKC pathway, thus inhibiting arachidonic acid decomposition, and the inhibition of macrophages may occur through the up-regulation of DRD5 and the downstream cAMP-PKA pathway, thus inhibiting NF-κB. Conclusions Our studies’ findings provide insight into the changes and possible roles of the ENS in J25 treatment of ETEC infection, providing a more sophisticated foundational understanding for developing the application potential of J25.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Zhuofan Han,Dengjie Zhong,Yunlan Xu,Haixing Chang,Lin Dong,Yi Liu
In this study, based on Ag@AgCl/tubular g-C 3 N 4 (Ag@AgCl/TCN) composite, Ag nanoparticles were deposited on its surface to form Ag nanofilm enhanced composite through photoreduction of excessive silver nitrate solution to obtain Ag nanofilm Ag@AgCl/TCN photocatalyst . Finally, Ag nanofilm Ag@AgCl/TCN/Ti photoanode was successfully prepared by silica-sol drop-coating method, and assembled with Cu 2 O/Cu cathode to construct a photocatalytic fuel cell (PFC). Ag nanofilm can not only enhance the light absorption and utilization of Ag@AgCl/TCN/Ti, but also extend its light response wavelength to visible light , and be used as an electron transfer medium to reduce internal resistance. The photocurrent density and the photoconversion efficiency of the Ag nanofilm/Ag@AgCl/TCN/Ti are 8.01 mA·cm −2 and 1.24%, respectively, which are 2.49 and 2.54 times those of the Ag@AgCl/TCN/Ti photoanode, respectively. The first-order kinetic constant and the maximum power density of the Ag nanofilm-coated Ag@AgCl/TCN/Ti-Cu 2 O/Cu PFC system are 0.064 min −1 and 46.37 μW·cm −2 , respectively, which are 1.39 and 1.94 times those of the Ag@AgCl/TCN-Cu 2 O/Cu PFC system, respectively. In addition, it degraded more than 95% of rhodamine B, 72.68% of tetracycline and 54.25% of bisphenol A within 60 min. The excellent performance of Ag nanofilm/Ag@AgCl/TCN/Ti-Cu 2 O/Cu is due to the strengthening of Ag nanofilm and the formation of S-type heterojunctions between AgCl and TCN. Free radicals (•Cl, h + , •OH, •O 2 - ) and non-radicals ( 1 O 2 ) are involved in the degradation reaction of RhB degradation. It is worth noting that 6% Ag nanofilm/Ag@AgCl/TCN/Ti-Cu 2 O/Cu has a positive effect on the production of •O 2 - , and its output is approximately 1.89 times that of the Ag@AgCl/TCN/Ti-Cu 2 O/Cu. A series of material characterization experiments have been completed and possible mechanisms of operation have been proposed. This study provides a new scheme for the design and preparation of high-efficiency photoanode of PFC.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xin Liu,Shikai Wang,Jinghao Cao,Jiahui Yu,Jixian Dong,Yutong Zhao,Fuping Zhao,Dafeng Zhang,Xipeng Pu
Rational design of the morphology and heterojunction to accelerate the separation of electron-hole pairs has played an indispensable role in improving the photocatalytic hydrogen evolution . ZnIn 2 S 4 (ZIS) has aroused considerable attention in solar-to-chemical energy conversion due to its remarkable photoelectrical properties and relatively negative energy band, whereas it still suffers from the severe photogenerated carrier recombination and catalyst aggregation. Herein, guided by density functional theory calculations, the constructed FeSe 2 @ZnIn 2 S 4 (FS@ZIS) heterojunction model has a hydrogen Gibbs free energy closer to zero compared with pure ZIS and FS, which is beneficial for hydrogen adsorption and desorption on the photocatalyst surface. Therefore, a novel cross-like core–shell FS@ZIS Step-scheme (S-scheme) heterojunction was synthesized successfully by in-situ growing ZIS nanosheets on the surface of cross-like FS. The structure with cross-like core–shell morphology not only inhibits the agglomeration of ZIS to increase specific surface area , but also provides a tight interface with S-scheme heterojunction. Moreover, the S-scheme heterojunction with a tight interface can effectively separate electron-hole pairs, leaving photoinduced charges with higher potentials. Furthermore, FS@ZIS-20 possesses exceptional photothermal capabilities, enabling the conversion of optical energy from visible and near infrared light to heat, thereby further enhancing the photocatalysis reaction. As a result, the cross-like core–shell FS@ZIS S-scheme heterojunction exhibits an excellent photocatalytic hydrogen evolution rate (7.640 mmol g −1 h −1 ), which is 24 times higher than that of pure ZIS (0.319 mmol g −1 h −1 ) under visible and near infrared light. Furthermore, employing more in-depth density functional theory calculations further investigates the charge transfer pathway of the FS@ZIS S-scheme heterojunction. This work provides insights into the construction of S-scheme heterojunctions with core–shell structure and photothermal effect for photocatalytic evolution hydrogen.
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