JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Zijun Yi,Bo Xiao,Xin Li,Yubo Luo,Qinghui Jiang,Junyou Yang
The severe non-radiative recombination loss caused by SnO 2 /perovskite interface defects greatly hinders the further improvement of the performance and stability of flexible perovskite solar cells (PSCs). Herein, a series of halides KM (M = F, Cl, Br, I) were inserted as interface layers to modulate the SnO 2 /perovskite interface. Both experimental and theoretical calculation demonstrated that F − exhibited stronger interface coupling effect between the SnO 2 and perovskite than other halide ions (Cl − , Br − , I − ). The F − had unique effects in effectively depressing SnO 2 /perovskite interface defects ascribed to the simultaneous formation of Sn F bonds and hydrogen bonds , resulting in reduced non-radiative recombination and improved interfacial contact. In consequence, the champion KF-modified flexible and rigid PSCs delivered outstanding PCE of 18.16 % and 21.36 %, accompanied by the enhanced V OC of 1.14 V and 1.16 V, respectively. Meanwhile, the stability of flexible PSCs was significantly ameliorated after KF modification, and about 84 % of the original efficiency could be retained even after 3000 bending cycles. This work provides a facile and efficient strategy for interface modulation to achieve high-performance and stable flexible PSCs.
研究领域:
材料科学
·
光伏技术
·
纳米界面工程
·
能源材料
·
半导体器件物理
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Fangyuan Zhang,Mei Hong,Jing Bai,Zhi Liu,Aiyuan Jia,Zhisheng Liu,Can Shi,Yangxue Li
Levofloxacin (LEV) infiltrated in groundwater has threatened the safety of drinking water . For in-situ remediation of LEV-contaminated groundwater, there exists a main challenge of exploiting proper high efficient backfill medium in utilizing charming permeable reactive barriers (PRBs). Herein, three porous shapeable three-component hydrogen-bonded covalent organic aerogels (H C OA-1, H C OA-2 and H C OA-3) were fabricated based on a multiple-linking-site strategy to evaluate for adsorptive removal of LEV. The three H C OAs exhibited satisfactory performance in LEV adsorption that could integrate high adsorption capacity, good antiion interference, excellent recyclability and wide pH tolerance. The different regularity of kinetics and isotherms of three H C OAs signified that electrostatic effect, pore preservation, hydrogen bonding probably govern the adsorption process in combination, coupling with π-π electron-donor-acceptor (EDA), dipole-dipole and hydrophobic-hydrophobic interaction besides. In addition, the response surface methodology (RSM) was employed for studying the single and synergetic effects of selected variables and optimizing operation conditions. Furthermore, a laboratory PRB column packed with processable H C OA-2 was set up to investigate the LEV removal, and the breakthrough data was explained by Adams-Bohart, Thomas, BDST and Yoon-Nelson models. We believe could hopefully bring H C OAs into the real in-situ remediation of such challenging and persistent LEV-polluted groundwater with further massive-scale efficiently.
研究领域:
环境科学
·
材料科学
·
水污染控制
·
环境功能材料
·
污染物吸附
·
可持续修复技术
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 22
·2300888
·
IF 9
Bihao Zhuang,Zicong Jin,Jiahuan Deng,Hui Xiong,Wenzhe Li,Jiandong Fan
Organic-inorganic hybrid metal halide perovskite has played an important role in optoelectronics and photonics due to their extremely high photoluminescence quantum yield (PLQY). However, considering the strong nonmetallic property of antimony (Sb), the excitons in antimony-based single crystals are usually dissipated in the form of non-radiative recombination under organic-inductive effect, which leads to the low PLQY. Herein, two kinds of perovskite-like single crystals, i.e., (8-HQ) 2 SbCl 3 and (8-HQH)SbCl 4 , are innovatively grown. The density functional theory (DFT) calculations reveal that the unique luminescence characteristics are associated with the inductive effect of organic coordination and exciton effect in the metal octahedral skeleton. When Cl − replaces the organic ligand in (8-HQ) 2 SbCl 3 , the inductive effect is reduced while the self-trapped exciton effect in the metal octahedron is enhanced. Besides, the theoretical research on electron transmission in a modeling device reveals that the hydrogen bond of organic A-site in the single crystal promotes the transition of electrons. Based on the luminescent properties of (8-HQH)SbCl 4 , the white LED devices are obtained by coating (8-HQH)SbCl 4 and red phosphor on 450 nm LED chips.
研究领域:
材料科学
·
光电子学
·
凝聚态物理
·
无机化学
·
半导体器件
·
光学材料
·
晶体工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuhua Dong,Jianbin Zheng
The work presented that by regulating the proportion between cobalt and 2-methylimidazole in distilled water, a series of Co-based imidazolate framework compounds with diverse shapes were synthesized at ambient temperature. The morphology and structural characteristics of the compounds were surveyed by scanning electron microscope, energy disperse spectra, powder X-ray diffraction and N 2 absorption-desorption. It was found by cyclic voltammetry that the zeolitic imidazolate framework compound synthesized at a ratio of 1:20 had the best electrocatalytic activity to H 2 O 2 reduction, therefore, the compound was chosen to fabricate a H 2 O 2 electrochemical sensor. Electrochemical studies indicated that the sensor had a determination limit of 0.7 μM and short response time within 3 s. The catalytic current was linear with H 2 O 2 concentration from 2.5 to 212.5, 212.5 to 1662.5 and 1662.5 to 6662.5 μM and the sensitivity were 12.2, 5.3 and 2.4 μA mM −1 cm −2 , respectively. Furthermore, the proposed sensor showed a good anti-interference capacity, repeatability and stability.
研究领域:
分析化学
·
材料科学
·
电化学
·
生物传感器
·
纳米材料
·
环境监测
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 2
·1-13
·
IF 2.8
Liu Penghao,Yao Dahu,Lu Chang,Gao Xiping,Dong Panyi
The sensitivity of hydrogel-based strain sensors is generally lower than that of other elastomer-based strain sensors due to the mismatch between the change in electrical conductivity and hydrogel deformation. Therefore, the fabrication of highly sensitive hydrogel strain sensors is still a challenge. Here, a highly sensitive strain sensor based on poly (vinyl alcohol) (PVA) hydrogel was fabricated by constructing a tightly adhered graphene conductive layer on the surface of PVA hydrogel. The hydrogen bonding interaction between tannic acid (TA) and PVA as well as the strong π-π interaction between TA and graphene were utilized. Utilizing the stronger hydrogen bonding between TA and PVA, the surface layer crosslinking density of PVA hydrogel was greatly enhanced. Relying on the π-π interaction between TA and graphene, the conductive layer of graphene is firmly attached to the surface layer of the PVA hydrogel. Compared to the strain sensor with graphene uniformly dispersed in a PVA hydrogel matrix, the sensitivity was improved from 0.98 to 8.6. The high strain sensitivity allowed a lower detection limit of strain as low as 0.1%. The hydrogel has good tensile properties (maximum tensile stress of 0.38 MPa) and good fatigue resistance. It has excellent durability (over 1000 cycles) and fast response (227 ms).
研究领域:
材料科学
·
纳米技术
·
传感器
·
高分子科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qian Wu,Li Yang,Hong Wang,Shihua Dong,Longquan Chen,Juntang Li,Jiaxi Cui
Droplet-embedded structures are useful in functionalizing polymer composites but difficult to prepare. Herein, we report a facile self-born method for creating droplets in supramolecular gels to mediate the material’s functions. This method is based on the amplification of the defects of polymer matrices generated in curing by swelling-driving reconfiguration of supramolecular polymer networks. The system of poly(urea-co-polydimethylsiloxane) that can cross-link via hydrogen-bond interaction is used to demonstrate our concept. The elastomer matrices are prepared via a casting method and exhibit a heterogeneous structure with both strong- and weak-cross-linking domains. When these materials are swelled in solvents, solvent molecules concentrate in the weak-cross-linking domains to nucleate. With the reconfiguration of the matrices, the nuclei grow into pure droplets, leading to the formation of droplet-embedded structures. This method is applicable to different material systems. We also show that obtained coatings with such droplet-embedded structures exhibit various interesting properties including self-replenishment of the surface liquid, mechanoresponsiveness, and self-healing ability. Moreover, after the droplets are consumed, this method can be used to regenerate the droplet-embedded structure for refunctionalizing the materials. Therefore, we envision its applications in preparation of many useful polymer composites.
研究领域:
材料科学
·
高分子化学
·
软物质物理
·
表面工程
·
自修复材料
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 12
·3357-3369
·
IF 2.43
Xu Anlin,Liu Wanqun,Chu Leping,Zhang Yunhai,He Yide,Zhang Yongjun
The cathode is the key component in the electro-peroxone process (E-Peroxone), which is popularly constructed with carbon materials. This study developed an innovative method to fabricate a cathode with waste-tire carbon (WTC) whose performance was evaluated for the degradation of tinidazole (TNZ), an antibiotic frequently detected in water. It was found that the addition of WTC in the cathode can significantly promote the yield of H 2 O 2 and the current efficiency: around 2.7 times that of commercial carbon black at the same loading. The critical influencing factors were studied, including the current density, ozone concentration, initial pH value, chlorine ions and initial TNZ concentration. The scavenger tests demonstrated the possible involvement of •OH and . Some transformation products of TNZ were identified with UPLC-MS and the degradation pathway was proposed accordingly. These results demonstrated the potential of WTC for developing E-Peroxone cathodes. The cathode with WTC generated more H 2 O 2 than a commercial carbon black cathode. Reaction conditions including current density, O 3 dose, pH values, initial TNZ concentration and electrolyte were studied. The main reactive oxygen species were probably •OH and . Transformation products were identified and a degradation pathway was proposed.
研究领域:
环境工程
·
电化学
·
水处理
·
材料科学
·
药物污染
✓ 已验证
DOI
高影响因子
BIOMASS & BIOENERGY
·
2022
·
IF 5.774
Botian Hao,Wei Ning,Donghai Xu,Yu Wang,Yang Guo,Shuzhong Wang
Indole is commonly reported as a N-containing heterocyclic compounds in biomass supercritical water gasification (SCWG), and is difficult to be degraded to small molecule substances. In this work, Ni/AC, Ni–Cu/AC, Ni–Co/AC, Ni–Ce/AC were prepared and tested for catalytic SCWG of indole. The results showed that Ni–Cu/AC had the highest activity for converting indole and producing gases, leading to the highest hydrogen gasification efficiency (135.1%) and carbon gasification efficiency (33.1%). During the catalytic SCWG of indole, the addition of auxiliary metal Cu in multi-component catalyst showed synergistic effects by changing reaction pathways and reaction rates. It significantly promoted water-gas shift and steam reforming reactions, so forming the highest H 2 yield of 2.62 mol mol −1 . Furthermore, large specific surface, Ni reduction and high catalyst stability point to potential advantages of the Ni–Cu/AC catalyst for catalytic SCWG of recalcitrant N-containing compounds.
研究领域:
化学工程
·
能源转换
·
环境科学
·
催化
·
可再生能源
✓ 已验证
DOI
高影响因子
Cell Reports Physical Science
·
2021
·
IF 0
Chong Li,Xiaoshuo Liu,Yulan Han,Qing Guo,Wenbo Yang,Qi Liu,Bo Song,Xiaolong Zheng,Shengyang Tao
Fluorescent anti-counterfeiting technology has been widely reported for its advantages, such as easy identification and multiple anti-counterfeiting functions. Most of the current fluorescent anti-counterfeiting materials focus on the innovation of anti-counterfeiting mode. However, stability is a prerequisite for applying anti-counterfeiting materials and determining whether a material can be widely used. Inspired by water stains, we report fluorescent nanoparticles that are easily prepared and inkjet printable and have multiple anti-counterfeiting functions and high stability. They are applied successfully to fluorescent anti-counterfeiting. 3D printed microreactors prepared the fluorescent nanoparticles with different emission wavelengths. The nanoparticles adhere firmly to the fibers of paper or cloth under the combined effect of hydrogen bonding and van der Waals forces. The sample paper exhibits good tolerance to extreme environments, such as boiling water, liquid nitrogen, photobleaching, and strong acid. Finally, multiple anti-counterfeiting functions are realized by mobile phones and clustering algorithms.
研究领域:
材料科学
·
纳米技术
·
分析化学
·
应用物理
·
生物医学工程
✓ 已验证
DOI
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhuangzhuang Gao,Baoju Li,Zhan Li,Tongwen Yu,Shuchang Wang,Qianrong Fang,Shilun Qiu,Ming Xue
Metal–organic frameworks (MOFs) are promising candidates for the advanced membrane materials based on their diverse structures, modifiable pore environment, precise pore sizes, etc. Nevertheless, the use of supports and large amounts of solvents in traditional solvothermal synthesis of MOF membranes is considered inefficient, costly, and environmentally problematic, coupled with challenges in their scalable manufacturing. In this work, we report a solvent-free space-confined conversion (SFSC) approach for the fabrication of a series of free-standing MOF (ZIF-8, Zn(EtIm)2, and Zn2(BIm)4) membranes. This approach excludes the employment of solvents and supports that require tedious pretreatment and, thus, makes the process more environment-friendly and highly efficient. The free-standing membranes feature a robust and unique architecture, which comprise dense surface layers and highly porous interlayer with large amounts of irregular-shaped micron-scale pore cavities, inducing satisfactory H2/CO2 selectivities and exceptional H2 permeances. The ZIF-8 membrane affords a considerable H2 permeance of 2653.7 GPU with a competitive H2/CO2 selectivity of 17.1, and the Zn(EtIm)2 membrane exhibits a high H2/CO2 selectivity of 22.1 with an excellent H2 permeance (6268.7 GPU). The SFSC approach potentially provides a new pathway for preparing free-standing MOF membranes under solvent-free conditions, rendering it feasible for scale-up production of membrane materials for gas separation.
研究领域:
材料科学
·
化学工程
·
纳米材料
·
气体分离
·
环境友好合成
·
膜技术
·
多孔材料化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2018
·
IF 3.886
Yunfeng Bao,Chunlei Huang,Limin Chen,Yu dong Zhang,Long Liang,Jinjun Wen,Mingli Fu,Junliang Wu,Daiqi Ye
Anatase TiO 2 nanosheets (-ns-) with dominant exposed {001} facets were used as support to load copper, and the synthesized Cu/TiO 2 -ns catalysts were evaluated for CO 2 hydrogenation to methanol. Under the reaction conditions, P = 3.0 MPa, T = 260 °C, V (N 2 ): V (H 2 ): V (CO 2 ) = 8:69:23 and gas hourly space velocity (GHSV) = 3600 mL g −1 h −1 , the methanol yield reached an appealing high value, 5.6%. Copper-loading amount, calcination temperature and reduction atmosphere have been investigated in this work, which significantly influence the particle sizes of copper and/or the defect concentration in TiO 2 , then leading to different catalytic performance. Characterizations of XRD, EPR, CO 2 -TPD and FTIR demonstrate that higher specific surface area of Cu is good for the hydrogenation of CO 2 and adequate amount of Ti 3+ plays important roles in CO 2 activation. Both of them facilitate high turnover frequency (TOF) of methanol formation.
研究领域:
催化化学
·
能源化学
·
材料科学
·
环境科学
·
工业催化
·
表面科学
·
纳米材料
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2015
·
IF 7.435
Shengjie Xia,Lianyang Zhang,Xiaobo Zhou,Mengmeng Shao,Guoxiang Pan,Zheming Ni
In this paper, Ti-contained Schiff base complex was intercalated into the interlayer of the ZnCr layered double hydroxides (LDHs) to form a novel layered organic–inorganic nanoscale material. And then, the hybrid material was further calcined to make metal oxides composite contained Zn, Cr and Ti (Ti/ZnO–Cr 2 O 3 ). This composite was used to study the performance and mechanism for naphthalene ( l -acid) photodegradation under visible light. The characterization results showed that Ti/ZnO–Cr 2 O 3 composite has higher specific area, more uniform pores size distribution and narrower band gap than that of original ZnCr–LDHs. Both physico-chemical property and photocatalytic performance for l -acid degradation by Ti/ZnO–Cr 2 O 3 were greatly improved with the increasing of calcination temperature, due to the highly crystalline structures with appearance of spinel ingredients of Zn, Cr and Ti. In addition, the molar ratio of Ti/Cr would also influence the photocatalytic property of the materials. Ti/ZnO–Cr 2 O 3 composite with Ti/Cr = 1 and calcined at 800 °C not only has narrow bang gap (2.11 eV) and high surface area (227 m 2 ), but also shows highest photocatalytic performance for l -acid degradation (90.2% within 240 min). Furthermore, the types and amounts of active radicals of photo oxidation reaction were also tested. The photocatalytic mechanism of the Ti/ZnO–Cr 2 O 3 composite was also discussed. Moreover, based on the results from HPLC–MS, GC–MS, FT–IT and DFT analysis, the decomposition intermediates and reaction pathway for l -acid were investigated in detail.
研究领域:
材料科学
·
环境化学
·
光催化
·
纳米材料
·
物理化学
·
环境工程
·
能源与可持续发展
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）