Energy Material Advances
·
2024
·
IF 14.8
Xin Wu,Peiyao Liu,Bingchen Huo,Yiyang Li,Shuang Liu,Yifan Lv,Cun-Yue Guo
Organic thermoelectric materials are not only used in low-grade waste heat recovery but also have frontier applications in sensors, wearable self-powered devices, biomaterials, and smart materials with the development of flexible electronics. However, investigation on the thermoelectric performance of single-walled carbon nanotubes (SWCNTs) comparable to that of conducting polymers and their composites with SWCNTs has been rarely attempted, and there were few reports on SWCNTs alone as organic thermoelectric materials. Certainly, SWCNTs possess high Young’s modulus, high thermal stability, flexibility, lightweight, easily controllable doping level, and facile p–n transition, while the mechanism of molecular doping of SWCNTs remains to be well understood. Here, facile solution processing achieved the enhancement of p-type and n-type thermoelectric performance of SWCNTs. Small-molecular-weight polyethylene glycol treatment improved electrical conductivity and the Seebeck coefficient of SWCNTs (p-SWCNTs) simultaneously, with the power factor of 303.17 ± 46.25 μW·m−1·K−2. Small amount of polyethylenimine doping made the Seebeck coefficient of SWCNTs (n-SWCNTs) turn negative and rendered great air stability of n-SWCNTs. The electrical conductivity and power factor of n-SWCNTs reached 1,702.56 ± 164.13 S·cm−1 and 418.49 ± 46.30 μW·m−1·K−2 at 298 K, respectively. The power factor of n-SWCNTs got even higher at 319.5 K in vacuo, reaching a high value of 643.35 μW·m−1·K−2. Finally, mechanism study in this work provided inspiration and guidance for the application of these types of dopants in the performance improvement of SWCNTs.
✓ 已验证
DOI
高影响因子
Matter
·
2025
·
IF 17.5
Xinghe Xu,Fu-Lin Gao,Lin Tian,Zhi-Yue Yang,Zhong-Zhen Yu,Jie Shang,Run-Wei Li,Xiaofeng Li
Flexible, self-powered thermoelectric temperature sensors with high reliability are increasingly recognized as essential components in tactile perception, wearable technologies, and medical monitoring. To fulfill the performance requirements of these applications—specifically, achieving high Seebeck coefficients and superior resolution—traditional fabrication strategies typically rely on intricate molecular engineering, microscale structural optimization, or macroscale topological design. However, these approaches often involve complex manufacturing processes and elevated production costs, constraining large-scale deployment. Here, we propose a simple multilayer assembly approach that harnesses a self-permeation effect to enable the facile and cost-effective fabrication of flexible thermoelectric sensors with significantly improved sensitivity and resolution. By inducing intensive p-n heterojunctions through self-permeation and leveraging phonon scattering at multilayer-structured interfaces, the obtained sensor exhibits an unprecedented sensitivity of 1,203.6 μV K −1 and an ultimate temperature difference detection capability of 0.001 K, showcasing great potential for applications in three-dimensional environmental monitoring and bionic robotic tactile sensing.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Di Wang,Yingying Zhu,Jinze Li,Wensheng Yang,Yulin Zhao,Geng Chen
Carbon nitride (g-C 3 N 4 ) photocatalysts face significant challenges in environmental water remediation, including limited visible light absorption, severe charge recombination, and slow charge transfer. To address these limitations, we developed a Z-scheme Ni-C 3 N 4 /P-C 3 N 4 heterojunction using an efficient and environmentally friendly ball milling method. Compared to g-C 3 N 4 , P-C 3 N 4 , and Ni-C 3 N 4 , the Ni-C 3 N 4 /P-C 3 N 4 heterojunction demonstrated significantly enhanced photocatalytic activity, achieving 99.1% and 86.8% degradation of tetracycline (TC) and rhodamine B (RhB) within 60 minutes, respectively. The total organic carbon (TOC) removal efficiencies were 78.2% for TC and 71.8% for RhB. This enhanced activity is attributed to the optimized heterojunction components and the tightly coupled heterojunction interface, which improve charge transfer and promote efficient separation of photogenerated carriers. Radical scavenging experiments and electron spin resonance (ESR) analysis revealed that holes (h⁺), hydroxyl radicals (·OH), and superoxide radicals (·O 2 − ) all synergistically contribute to the degradation process, with ·O 2 − being the dominant active species. Additionally, toxicity assessment of the degradation products confirmed the environmental safety of the photocatalytic process. This study provides a promising strategy for photocatalytic water purification and offers valuable insights into the design of heterojunction materials.
✓ 已验证
DOI
高影响因子
Matter
·
2025
·
IF 17.5
Jun Liu,Jianen Zhang,Qi Xue,Huiying Gao,Shirui Zhang,Jinfeng Xie,Li Guan,Xiaohong Zhang,He Huang
The development of high-performance transparent conductors (TCs) is critical for advancing transparent electronics and optoelectronic devices. While n-type TCs are well established, the development of p-type TCs remains hindered by the limited availability of suitable materials. In this study, the layered double perovskite Cs 4 ZnBi 2 Cl 12 was synthesized as a promising p-type TC, which exhibits a wide direct band gap of 3.56 eV and intrinsic p-type conductivity. A hydration-mediated strategy was developed to trigger a near-spherical nanocrystal-to-nanorod transformation and modulate the electronic structure. First-principles calculations clarify that the lattice compressive strain induced by hydration significantly reduces the hole effective mass while increasing conductivity from 8.99 to 9.21 mS cm −1 , outperforming traditional p-type TCs, such as CuAlO 2 (3.4 mS cm −1 ) and SrCu 2 O 2 (0.48 mS cm −1 ). These findings not only provide experimental validation of the theoretical predictions regarding Cs 4 ZnBi 2 Cl 12 as a p-type TC but also establish a hydration strategy for optimizing the optical and electrical performance of layered double perovskites.
✓ 已验证
产品关联
DOI
高影响因子
BIOMATERIALS
·
2015
·
IF 8.557
Jiansheng Liu,Yajing He,Jun Zhang,Jiajia Li,Xiangrong Yu,Zhonglian Cao,Fanmin Meng,Yuwu Zhao,Xunyi Wu,Teng Shen,Zhen Hong
Despite optimal therapeutic regimen with currently available antiepileptic drugs (AEDs), approximately a third of epilepsy patients remain drug refractory. Region-specific overexpression of multidrug efflux transporters at the blood–brain barrier, such as P-glycoprotein (P-gp), might contribute to multidrug resistance (MDR) by reducing target concentrations of AEDs. Therefore, development of nanomedicine that can modulate P-gp function as well as facilitate targeted AEDs delivery represents a promising strategy for epilepsy intervention. To achieve this, we sought to exploit the possibility of combination of active targeting function of tryptophan by transporter-mediated endocytosis and overcoming MDR by Pluronic block copolymers . Herein, a tryptophan derivate (TD) functionalized Pluronic P123/F127 mixed micelles encapsulating LTG (TD-PF/LTG) was developed to promote AEDs delivery to epileptogenic focus. TD-PF/LTG was about 20 nm in diameter with a spherical shape and high encapsulation efficiency. A rat epilepsy model with pilocarpine was established to evaluate the brain penetration efficiency of the LTG-incorporated polymeric micellar formulation, compared with free LTG formulations. Studies showed that TD-PF/LTG was more efficient than PF/LTG as well as free LTG in delivering the drug to the brain, especially the hippocampus. The enhanced targeted delivery could be ascribed to the increased tryptophan uptake at epileptogenic focus as well as P-gp modulation property of the nanomaterial . Taken together, TD-conjugated Pluronic micelles showed promising potential as a nanoplatform for the delivery of AEDs in refractory epilepsy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Pinyi He,Jianliang Bai,Fu Qin,Xinyu Wang,Xu Yu,Yongkang Yao,Lili Ren
Deep-blue emission (＜450 nm) is significant in high-density information storage, solid-state lighting, and vivid displays. However, the carbon dots (CDs) obtained from p-phenylenediamine (pPD) have only red fluorescence, which greatly limits the application and development of pPD-based CDs. As we all know, a catalyst is a substance that can change the rate and pathway of a chemical reaction. Herein, we designed to add a catalyst to realize the conversion of pPD-based CDs from red to deep-blue fluorescence. The emission peak of obtained deep-blue CDs was 440 nm, and the full-width at half-maximum (FWHM) was only 58 nm, with a high color purity. In addition, through in-depth analysis of microstructure and photoluminescence (PL) properties, it is found that the decrease of the sp 2 -conjugated domain and the graphite N content and the increase in pyridinic N content were the main reasons for the blue shift of the spectra. Based on this, the formation process and mechanism of red and deep-blue CDs were further elucidated. This work not only efficiently realized the design of the deep-blue CDs but also provided a new idea for the luminescence regulation of CDs without changing the raw materials and reaction conditions.
✓ 已验证
DOI
高影响因子
WEED SCIENCE
·
2017
·Vol. 65
·期 6
·710-717
·
IF 1.862
Pei Zhang,Han Wu,Hongle Xu,Yuan Gao,Wei Zhang,Liyao Dong
Italian ryegrass has invaded wheat fields in China and is becoming a predominant, troublesome weed. Fenoxaprop-P-ethyl has been widely used for weed control on Chinese farms since the 1990s. However, overuse has led to fenoxaprop-P-ethyl resistance in Italian ryegrass in Chinese wheat fields. In this study, we identified a putative fenoxaprop-P-ethyl–resistant population of Italian ryegrass, HZYC-6, from Henan province, China. Mutations involving Asp-2078-Gly and Ile-1781-Leu substitutions were identified in the carboxyl-transferase domain of acetyl-coenzyme A carboxylase in this population, and these mutations are the likely cause of the target site–based resistance to fenoxaprop-P-ethyl. In addition, we identified cytochrome P450–mediated metabolism of herbicides (non–target site based resistance) in the HZYC-6 population, indicating that multiple mechanisms of resistance may be segregating in this population. Furthermore, HZYC-6 was also highly resistant to haloxyfop-R-methyl and quizalofop-P-ethyl, moderately resistant to clodinafop-propargyl and sethoxydim, and had low resistance to clethodim and pinoxaden.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xinyu Zhi,Jingjing Wang,Huayi Cai,Danyi Yang,Jinbo Jia,Tianliang Wang,Chengchun Tang,Yi Fang
Photocatalysis can directly convert solar energy into chemical energy, has shown unique advantages in solving environmental and energy problems. In this paper, novel UiO-66/p-BN (UBN) heterojunction photocatalysts were successfully prepared by a simple solvothermal method. UBN-6 achieved a degradation efficiency of up to 93.8 % for 30 mg/L tetracycline under 180 min of visible light irradiation, which was 2.46 and 3.25 times higher than that of pure UiO-66 and p-BN, respectively. The enhancement of UBN photocatalytic activity stemmed from the incorporation of p-BN, which increased the specific surface area to expose more active sites, broadened the visible light absorption range, and promoted the separation of photogenerated carriers through the formation of heterojunctions. Free radical trapping experiments showed that ·O 2 - , ·OH and h + played important roles in the photocatalytic degradation of tetracycline pollutants. In addition, the photocatalytic mechanism of UBN was revealed by analyzing the degradation intermediates of TC by LC-MS. This work provides an effective strategy for designing visible light responsive photocatalysts to degrade pollutants.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zhigao Ma,Ziwen Wei,Bingyan Jiang,Lu Zhang
The electrodeposition of Ni–P–PTFE nanocomposites offers an effective approach to reduce mold–polymer interface adhesion and improve the replication of polymer micro features in injection molding. However, it is still challenging to fabricate Ni–P–PTFE nanocomposites with low internal stress and nanoscale surface roughness in electrolytes containing high PTFE concentrations. In this study, cetyltrimethylammonium bromide was introduced into the electrolytes to achieve a good dispersion of PTFE nanoparticles. Ni–P–PTFE nanocomposites with various compositions were successfully electrodeposited, and their tribological properties were analyzed. The electroformed Ni–P–PTFE nanocomposites with high PTFE and phosphorus contents showed a low surface roughness and surface energy compared to nickel electrodeposits. Ni–P–PTFE nanocomposites also exhibited a low coefficient of friction (COF) and wear loss when electroformed from an electrolyte containing 32 g/L phosphorus acid and 5 g/L PTFE nanoparticle. The COF of Ni–P–PTFE against stainless steel and poly(methyl methacrylate) was 0.2 and 0.12, respectively, representing a decrease of 80% and 85% compared to nickel electrodeposits. These enhancements in self-lubricating performances were primarily attributed to the low surface roughness and a shift in wear modes from adhesive wear to predominantly mild abrasive wear.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jingwei Wang,Yaoyong Dong,Xuejun Zheng,Bei long,Hui Ling,Long Xie,Zhenhua Xiang,Wenyuan He
This report reveals that the hydrogen evolution activity of VS 2 can be effectively strengthened by inducing the surface charge redistribution of VS 2 via P non-metal doping. The XRD, TEM, GPA, EDS and XPS characterizations confirm that the P atoms are successfully doped into the VS 2 /CC matrix by substituting S atoms, resulting in lattice tensile strain and charge redistribution. The optimal P-doped VS 2 on carbon cloth (P-VS 2 /CC) exhibits a low overpotential of 274 mV at − 50 mA cm −2 and a small Tafel slope of 65.4 mV dec -1 , much lower than those of VS 2 /CC counterpart (622 mV and 120.1 mV dec −1 , respectively). Moreover, the P-VS 2 /CC delivers a long-term stability for 55 h without decay at 10 mA cm −2 , outperforming the VS 2 /CC. Density functional theory calculations suggest that P doping can induce the charge transfer from S and V to nearby P atoms, resulting in the decrease of hydrogen adsorption free energy at the S and V sites and the increase of total density of states at the Fermi level, thus far super hydrogen evolution activity. This work provides a hopeful new route for strengthening the HER activity of VS 2 , and offers a new perspective for developing advanced transition-metal chalcogenides electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zeyulin Zhang,Dinghe Liu,Yiru Yan,Liru Zeng,Hao Chen,Qingwen Song,Dazheng Chen,Chunxiang Zhu,Chunfu Zhang,Yuming Zhang,Yue Hao
Gallium oxide (Ga 2 O 3 ) film exhibiting the solar-blind absorption cutoff characteristic holds considerable potential for application in UV photodetectors . The material defects in the device will introduce the recombination region for the photodetector, especially at the interface of the Ga₂O₃ heterojunction . The photogenerated carriers , generated within the Ga 2 O 3 film, will inevitably be influenced by these high recombination centers during their transportation. Avoiding or minimizing this region can improve the performance of the photodetector. The p-n junction, with its depletion region , generates an electric field that drives the carriers away from the recombination region. However, due to the Ga 2 O 3 p-type doping difficulty, our work focuses on the growth of single-crystal NiO/β-Ga₂O₃ films by Mist-CVD and the fabrication of field-controlled photodetectors. The hole concentration in the NiO film is adjusted by doping with different concentrations of Li⁺. Compared with a photodetector without the NiO interlayer, the performance of the photodetector with the structure of NiO (1 % Li⁺-doped)/β-Ga₂O₃ exhibits a significant improvement, which achieved the maximum responsivity of 1002.5 A/W, and a high peak detectivity of 3.31 × 10 15 Jones.
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Xinyu Wang,Peilin Yu,Tao Wang,Chuanqi Chu,Zhijia Liu,Ming Du,Junjie Yi
p -Cresol has been identified as a key odorant that is responsible for the characteristic flavor of fermented bamboo shoots. Although it is known to play a significant role in bamboo shoot fermentation, the microbial sources and biosynthetic pathways of p -cresol is still poorly characterized. The relationship between the microbiota and flavor profiles in fermented bamboo shoots was systematically investigated in this study via metagenomics and gas chromatography–mass spectrometry (GC–MS). The results demonstrated that Lactobacillus and Kazachstania represented the dominant microbial genera, with Lactobacillus acetotolerans identified as the most abundant bacterial species. Phenols and acids were identified as the primary flavor components, and p -cresol was found to be the dominant flavor compound. Correlation analysis was further found to reveal significant positive associations between specific microorganisms (e.g., L. acetotolerans ) and key flavor compounds (including p- cresol). The formation of the main characteristic flavors in fermented bamboo shoots was closely associated with carbohydrate and amino acid metabolism pathways. Tyrosine was first converted to 4-hydroxyphenylacetate via transamination, followed by subsequent decarboxylation to p -cresol catalyzed by the enzyme 4-hydroxyphenylacetate decarboxylase. This study provides insights into the microbial mechanisms underlying the formation of the stinky flavor in fermented bamboo shoots.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）