Sustainable Materials and Technologies
·
2022
·
IF 10.681
Chunxiao Wu,Yi Dong,Yun Hau Ng,Yuxi Liu,Jiguang Deng,Lin Jing,Hongxing Dai
Morphological modulation of elemental red phosphorus (RP) is achieved via a metallic nickel (Ni)-promoted chemical vapor deposition (CVD) strategy to enhance its photocatalytic hydrogen generation activities. The presence of Ni in the synthesis facilitates two synergetic effects on the as-prepared crystalline RP photocatalysts : i) optimized architecture of regular microrod structures to increase the surface area and reaction sites; ii) Ni nanoparticle on the RP serves as the co-catalyst to suppress the undesired deep charge trapping and recombination by improving the surface charge separation efficiency. As a result, the optimized Ni@RP catalyst demonstrates a ca. 12-fold enhancement in the visible-light photocatalytic hydrogen evolution than that of the amorphous RP. The discovery of the natural growth of elemental P promoted by transition metal catalysts in this work may provide new insights into developing other favorable elemental catalysts for various applications.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 9
·e53546
·
IF 3.057
Wei Lu,Zhipeng Zeng,Zhenglong He,Yuntao Liang,Yong Sun,Shuanglin Song,Lili Wang,Ruling Liu
A highly dispersed melamine/red phosphorus (MA/RP) composite flame retardant was prepared by means of simple mechanical grinding. After co-thermal pretreatment with polyether polyol (PPG-2000) at 135°C, organic–inorganic hybrid foams (MA/RP/HF) containing MA/RP flame retardant were prepared by the one-step method using main raw materials such as polyisocyanate and sodium silicate. When 0.5 wt% MA/RP with the mass ratio of 1:5 is added, MA can realize the uniform dispersion of RP in the substrate and enhance its flame retardancy, and the obtained MA/RP/HF presents uniform and closed pores and excellent basic properties. The TG results reveal that MA/RP/HF shows good thermal stability and the corresponding char residual rate reaches 37.9% at 800°C. The flame retardant test results prove that MA/RP/HF is capable of passing the V-0 grade, with the LOI value being 26.8%. According to the cone calorimeter analysis, its peak heat release rate and total heat release decrease by 30.1% and 51.7% compared with those of rigid polyurethane-based foam and by 40.1% and 30.0% compared with those of pure HF, respectively. Finally, the synergistic flame retardancy mechanism of MA and RP on polyurethane-based foam was discussed.
研究领域:
材料科学
·
燃烧与防火研究
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2021
·Vol. 5
·期 10
·2100720
·
IF 14.188
Lingbo Liu,Jian Shen,Kangbing Wu,Nianjun Yang
Synthesis of 2D materials with different morphologies is of significance to reveal their morphology-dependent properties and further explore their morphology-dependent applications. This work reports the synthesis of 2D red phosphorus nanosheets (RPNSs) with different thicknesses by means of a phosphorus-amine method together with regulated electrophilicity of the solution. With graphene as the support, the RPNSs produced in 0.01 m HCl feature a unique 2D nanostructure, uniform distribution, and excellent electrochemical performance. Originating from the reacted characteristics between phosphorus and amine, the interaction of aniline with the RPNSs is clarified theoretically and experimentally by means of density functional theory, X-ray photoelectron spectroscopy, and voltammetry. A covalent bond is confirmed to be formed during the deprotonation of aniline and its binding energy reaches −2.31 eV. Stemming from such an adsorption process, different aromatic amines (e.g., p-nitroaniline, p-phenylenediamine) are sensitively and selectively monitored on the RPNSs. Consequently, this work provides a new way to clarify morphology-dependent properties and applications of novel 2D materials.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhizi Ma,Meng Yuan,Ziyong Cheng,Zhuang Yang,Ling Yang,Bin Liu,Yulong Bian,Abdulaziz A. Al Kheraif,Ping'an Ma,Jun Lin
Due to the shallow penetration depth of light in biological tissues, the effectiveness of photothermal therapy (PTT) in deep-seated tumors is limited. Conversely, ultrasonic wave has excellent tissue penetration depth. Using ultrasound (US) as an exogenous physical stimulus to trigger tumors thermotherapy is a promising alternative for deep-seated tumors to supersede conventional PTT. Here, we realized a mild sonothermal therapy (STT) using biodegradable red phosphorus nanoparticles (RP NPs) as sonothermal agents. Quite obvious sonothermal conversion of RP NPs is remarkable under low intensity US irradiation, with the temperature rise from 30 to 47 °C at tumor site. In terms of potential mechanism, under US excitation, the internal electrons of RP NPs undergo transition and release the energy by electrons and holes recombination process. This elicits the atom thermal vibration and raises the temperature around the RP NPs. Additionally, US irradiation can stimulate RP NPs to produce singlet oxygen ( 1 O 2 ) and reduce intracellular energy levels that leads to downregulation of the heat shock proteins (HSPs) expression, providing an “escort” to mild STT. This work offers a new paradigm for the strategies of STT enhanced by sonodynamic effect.
研究领域:
癌症治疗
·
纳米技术
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-6
·
IF 4.011
Wang Rui,Mo Hanxiao,Li Shuai,Gong Yansheng,He Beibei,Wang Huanwen
In this paper, the influences of conductive carbons on the red phosphorus (P) composites in sodium-ion batteries are studied. Electrochemical testing results show that Ketjen Black makes the P composites present much better cycling performances. Electrochemical impedance spectra (EIS) results indicate that when Ketjen Black is used, the total resistance of the electrode can be decreased. Since Ketjen Black is a low-cost and commercially available material, our results suggest that Ketjen Black might be a promising conductor for the alloying anodes such as P in sodium-ion batteries.
研究领域:
材料科学
·
能源研究
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-7
·
IF 3.125
Wang Fei,Zi Wenwen,Zhao Bao Xun,Du Hong Bin
Red phosphorus (RP) has attracted extensive attention as an anodic material for lithium-ion batteries (LIBs) due to its high theoretical specific capacity of 2596 mA h g − 1 and earth abundance. However, the facile and large-scale preparation of the red phosphorus nanomaterials via a solution synthesis remains a challenge. Herein, we develop a simple and facile solution method to prepare red phosphorus nanoparticles (RP NPs). PCl 3 readily reacts with HSiCl 3 in the presence of amines at room temperature to produce amorphous RP NPs with sizes about 100–200 nm in high yields. When used as an anode for rechargeable lithium ion battery, the RP NP electrode exhibits good electrochemical performance with a reversible capacity of 1380 mA h g − 1 after 100 cycles at a current density of 100 mA g − 1 , and Coulombic efficiencies reaching almost 100% for each cycle. The study shows that this solution synthesis is a facile and convenient approach for large-scale production of RP NP materials for use in high-performance Li-ion batteries.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2023
·
IF 4
Yunpeng Li,Xin Wang,Zhuanhu Wang,Tingting Li,Yanjie Shi,Yuhua Ma,Shiyin Wang,Chen Li,Minghe Gao,Fuhe Gai
Red phosphorus (RP) is an excellent semiconductor photocatalyst , but suffers from a narrow band gap, small specific surface area, few active sites and low light quantum efficiency, which limits its practical application. The immobilization of RP on supports with large surface is an emerging attempt to improve photocatalytic performance. In this paper, the hydrothermally treated RP (HRP) was immobilized on the inexpensive activated carbon (AC) support. The ratio optimization experiments showed that the AC 7 /HRP (mass fraction of AC was 7%) composite showed the highest against Rhodamine B (RhB), and the κ values were 0.234 min −1 , which were 3.8 times higher than that of HRP. The mechanism of activity enhancement suggested that a special structure was formed between HRP and AC, which not only inhibited overgrowth and agglomeration of HRP, but also acted as a micro-reaction system for adsorption-localization photocatalytic reactions. In addition, AC had excellent optical properties , which can improve the photoelectric conversion and the separation of photogenerated electron and hole (e − -h + ) pairs, thus improving the photocatalytic activity . Therefore, the AC 7 /HRP composite was eco-friendly, cost-effective, and had strong photocatalytic oxidation properties, which was expected to be used in practical wastewater treatment.
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
ACS Nano
·
2018
·
IF 13.709
Shuai Liu,Hui Xu,Xiufang Bian,Jinkui Feng,Jie Liu,Yinghui Yang,Chao Yuan,Yongling An,Runhua Fan,Lijie Ci
As a potential alternative to lithium-ion batteries, sodium-ion batteries (SIBs) have attracted more and more attention due to the lower cost of sodium than lithium. Red phosphorus (RP) is an especially promising anode for SIBs with the highest theoretical capacity of 2596 mAh g–1, which faces the challenges of large volume change and low conductivity. Herein, we develop a nanoporous RP on reduced graphene oxide (NPRP@RGO) as a high-performance anode for SIBs through boiling. Its nanoporous structure could accommodate the volume change and minimize the ion diffusion length, and the high electronic conductive network built on RGO sheets facilitates the fast electron and ion transportation. As a result, NPRP@RGO exhibits a superhigh capacity (1249.7 mAh gcomposite–1 after 150 cycles at 173.26 mA gcomposite–1), superior rate capability (656.9 mAh gcomposite–1 at 3465.28 mA gcomposite–1), and ultralong cycle life at 5.12 A gRP–1 for RP-based electrodes (775.3 mAh gRP–1 after 1500 cycles). The successful synthesis of NPRP@RGO marks a significant enhanced performance for RP-based SIB anodes, providing a scalable synthesis route for nanoporous structures.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
PubMed
高影响因子
CARBON
·
2020
·
IF 8.821
Weilin Lin,Yue-e Huang,Lunhui Guan,Xiaoying Huang,Li Li,Ke-Zhao Du,Xiaohui Wu
A strategy of doping chalcogen-heteroatom in red phosphorus (RP) nanoparticles is adopted to improve the electrochemical performance of RP based composites as lithium storage materials. RP nanoparticles embedded in porous carbon with chalcogen-doping (S-, Se- and Te–P@PC) composites are synthesized via a facile evaporation-condensation approach. The large volume expansion of RP upon cycling is well mitigated by nanoscale feature and buffered by pore-closed carbon matrix. The extra fillings of chalcogen dopants lessen the specific surface areas of the doped composites, minimizing parasitic surface reactions of anode materials with electrolyte that can lead to high initial coulombic efficiencies. The high conductivity of Se dopant and the formed conductive Li–Se/Li–Se–P confer the Se–P@PC anode with improved electron/ion transport properties to deliver a superior fast-charging capability over 900 cycles. Moreover, a high-rate capacity of 908.5 mA h g −1 at 5.0 A g −1 and an impressive reversible capacity of 848.2 mA h g −1 even after 1800 cycles at 1.0 A g −1 of Se–P@PC surpass most of reported RP-based anode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Rui Li,Jenaidullah Batur,He Bian,Ying-Jie Wang,Zunbin Duan,Yabo Xie,Jian-Rong Li
Photocatalyzed CO2 reduction (CO2RR) transfers CO2 into valuable products using renewable energy, attracting widespread attention. Composite catalysts fabricated with TiO2 and red phosphorus (RP) might exhibit competitive advantages, but effective interphase binding is difficult to forge. The composites therefore require complex and energy-consuming syntheses, severely hindering their application in CO2RR. In this work, TiO2/RP composites with hyperefficient interphase contact, which outperform various elaborately designed catalysts, are directly prepared from commercially available materials via a green and facile hydrothermal approach. The low heating temperature and sole solvent of water diminish the energy input for synthesis and imply a potential opportunity to propel CO2RR with industrial waste heat and cooling water. Experimental and computational analyses reveal that hydrothermal synthesis reduces the interfering oxidized species on the exterior surface of RP, facilitating the relatively less favored interphase contact between TiO2 and nonoxidized RP. Photoelectron transfer and catalytic performance of the composites are hence drastically enhanced. Further improvement of activity is feasible by slightly elevating the heating temperature, time, or solution acidity. Attributing to the universal applicability of this green approach, different metal oxide/RP composites (e.g., WO3/RP) are similarly prepared, consistently boosting the reaction rate multiple times.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jiangping Song,Mengjun Wu,Kan Fang,Tian Tian,Rui Wang,Haolin Tang
Red phosphorus/carbon (P/C) materials have been extensively studied as promising anodes for sodium-ion batteries (SIBs) owing to their high capacities and moderate working potentials. However, the low initial Coulombic efficiency (ICE) and unstable solid-electrolyte interphase (SEI) of P/C composites limit their widespread applications. In this study, we develop an effective presodiation method to compensate for the irreversible sodium loss of the S-doped P/C (P/C@S) anode and yield a thin, uniform, and NaF-rich SEI layer on the presodiated P/C@S (pNa-P/C@S) anode during cycling. Consequently, the pNa-P/C@S anode exhibits a remarkable ICE of 98.7% as well as superior cycling performance and rate capability in the half cell. When pNa-P/C@S anode is coupled with conventional Na 3 V 2 (PO 4 ) 2 F 3 , Na 3 V 2 (PO 4 ) 3 , and NaCu 0.12 Ni 0.23 Fe 0.33 Mn 0.33 cathodes, all the full cells demonstrate desirable ICEs (>98%), high energy densities, and excellent cycling performance. The proposed method has been extended to another anode (SnO 2 ) to demonstrate its applicability in fabricating anodes with a high ICE and stable NaF-rich SEI layer.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Tao Xu,Huan Liu,Jing Tang,Wenxi Wen,Chenjie Gu,Tao Jiang,Hongbin Xu
Surface enhanced Raman scattering (SERS) with high detection sensitivity has emerged as a fascinating protocol for monitoring trace amount of drugs in clinical serum sample. Herein, a simple and environmentally friendly photo-induced in-situ reduction strategy was proposed to synthesize RP@Ag composites with both SERS and photocatalytic activities. By carefully adjusting the concentration of the Ag source in the precursor solution, the amount and diameter of the decorated Ag nanoparticles were precisely tuned. The resulting optimal RP@Ag composites exhibited reliable SERS enhancement ability (enhancement factor: 1.76 × 10 7 ) and the highest degradation efficiency (degradation ratio: 95.04 %, irradiation time: 120 mins) in recyclable detection of Rhodamine B. After further confirming the reliable accuracy, sensitivity, homogeneity, and durability of the RP@Ag composites, they were used to monitor osimertinib and enabled an extremely low limit of detection as 1.63 × 10 −7 mg/mL. In particular, such a recyclable SERS platform achieved perfect recovery rates, the obtained deviations were all within 10 % in the monitoring of clinical samples from patients taking medicine for different durations.
研究领域:
分析化学
·
药物分析
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）