CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bing Wang,RuiQing Zhang,HuiYong Chen,Zhuo Li,EnZhou Liu,HaiXia Ma,Bo Zhou,Hong Hao,LinYu Jiao
Controllable fine-tuning of heterojunction interfaces at the atomic level represents a promising strategy for enhancing semiconductor photocatalytic performance. Herien, we propose a strategy to introduce hydrogen-bonded electron channels at the heterojunction interface to achieve rapid interfacial electron transfer. This S-scheme hydrogen-bonded supramolecular self-assembled H 12 SubPcB-OPhCH 2 COOH/Ag 3 PO 4 semiconductor heterojunction exhibits efficient and stable photocatalytic degradation of a wide range of pharmaceuticals and personal care products. Experimental results and theoretical simulations demonstrate that the interface O-H⋅⋅⋅O hydrogen bond at the heterojunction generates an internal electric field, which provides the driving force for accelerated S-scheme charge transfer and enhanced redox properties. Furthermore, the combination of TDDFT calculations and synchronous illumination XPS has revealed that hydrogen bonding acts as a suction electron pump in the excited state, transferring electrons from Ag 3 PO 4 to SubPc-2. These findings suggest that hydrogen-bonded supramolecular semiconductor can be used to develop high-performance photocatalytic materials for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
Solar RRL
·
2023
·Vol. 7
·期 17
·2300318
·
IF 7.9
Bowen Liu,Xinan Shi,Wei Shao,Jiaxin Gao,Chenxi Zhao,Fuyan Chen,Dongdong Shen,Bingsuo Zou,Daocheng Pan
Cu(In,Ga)(S,Se) 2 (CIGSSe) solar cells are one of the most promising thin film photovoltaics with a record efficiency of 23.6%. However, the biggest drawback to CIGSSe solar cells is their high material cost, partially resulting from relatively rare and expensive indium and gallium. Therefore, improving the utilization of indium and gallium and reducing their wastage can greatly lower the cost of CIGSSe thin film solar cells. Inkjet printing is a facile, cost-effective, and low-waste deposition technology, which is particularly suitable for low-cost and large-area fabrication of CIGSSe solar cells. Herein, a novel and green ionic liquid-assisted ink to fabricate highly efficient CIGSSe solar cells is developed. The material utilization of inkjet printing can be remarkably improved compared to the conventional vacuum-based deposition approach and spin-coating solution approach. The CIGS printable ink is prepared by dissolving copper acetate, indium acetate, gallium nitrate, and thiourea into ethanol with the assistance of n -butylammonium butyrate ionic liquid. Ionic liquid-assisted CIGS ink has a nearly zero wetting angle and a tunable viscosity, which enable to deposit a flat and continuous CIGS thin film by an inkjet printing method. An encouraging power conversion efficiency of 15.22% has been achieved for inkjet-printed CIGSSe solar cells.
✓ 已验证
产品关联
DOI
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2023
·Vol. 43
·期 6
·1963-1978
·
IF 3.6
Lv Huan,Liu Xinyuan,Hao Yingzi,Yi Yanhui
The industrial utilization of methane to methanol is based on the indirect pathway with syngas as an intermediate product, but the reaction conditions are very harsh and the costs in equipment and operations are extremely high. Therefore, the direct oxidation of methane to methanol (DOMTM) under mild conditions is more desirable. In this paper, coupling of non-thermal plasma and Cu–zeolite (Cu–ZSM-5 and Cu–S-1) catalysts have been studied for DOMTM. The effect of Si/Al ratios (Cu–ZSM-5 and Cu–S-1 catalysts) on the reaction performance has been investigated. Cu–S-1 catalyst exhibited the best catalytic performance, i.e., 5.8% methane conversion and 50.6% methanol selectivity. The employed catalysts have been characterized by XRD, UV–Vis, XPS and FT-IR. The results show that Cu–ZSM-5 catalysts with high Si/Al ratio are conducive to the formation of isolated Cu 2+ species, and Cu–S-1 catalyst exhibits the most abundant isolated Cu 2+ species. Furthermore, Cu–S-1 catalyst shows the most abundant O ads species. The plentiful surface silicon defects on S-1 is the reason why Cu–S-1 catalyst shows the most abundant isolated Cu 2+ and O ads species, and these two species are interdependent to form a Si–O–Cu species, which may be the active site for DOMTM. Based on these findings, the possible catalytic mechanism was proposed.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hongyu Niu,Xing-Bao Wang,Jingjie Luo,Jiaxin Liu,Chuang Li,Wen-Ying Li,Changhai Liang
Desulfurization plays a critical role in refining crude oil to produce fuel and the manufacture of fine chemicals. However, its low efficiency becomes a great challenge for the present desulfurization if only the C-S cleavage is considered a promising approach to reducing hydrogen consumption under atmospheric pressure. Accordingly, we investigate the critical factors necessary to achieve high C-S cleavage of dibenzothiophenes under mild conditions of 0.1 MPa and H 2 /oil = 100. The mechanism of reactive adsorption desulfurization of dibenzothiophenes with or without steric hindrance at atmospheric pressure on Pt/ZnO is proposed by studying the adsorption model of active metal sites, the Pt efficiency in C-S cleavage influenced by the steric hindrance and the structural evolution of Pt active centers in the presence of sulfur adsorption/deposition. Based on both experimental and DFT results, we report C-S cleavage of dibenzothiophenes with (TOF = 15 h −1 ) or without steric hindrance (TOF = 128 h −1 ) that can be highly efficiently fractured (99.9%) by the interface between PtS x and ZnO . This work has great practical significance for developing atmospheric industrial adsorbents for ultra-deep reactive adsorption desulfurization.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Jizhao Zou,Jingyou Xu,Hongliang Wu,Haoyu Dong,Minhai Zheng,Zhangjian Li,Xierong Zeng,Junfeng Huang
NiCo-S has been regarded as a promising battery-type electrode for efficient supercapacitors owing to its hybrid orbitals, abundant reserve and multiple valence states. The tailored morphology and crystalline structure of NiCo-S can be achieved by using microwave methods profiting from the uniform heat distribution. Herein, a facile, “atmosphere-free” and highly-efficient microwave-assisted method was used to fabricate Ni 2 Co-S 2D sheet materials with hierarchical porosity and excellent electrochemical behaviours as battery-type electrodes for hybrid supercapacitor . Considerable metal ratio regulation endowed Ni 2 Co-S specific structure of 2D sheets with metal-nanoparticles and abundant active sites with variable valence state. Based on the simulation results, the low O H bond energy for Ni 2 Co-S promoted the deprotonative reaction in the electrochemical charge/discharge process, and the synergistic interaction of Ni and Co at the surface contributed to more free electrons , more active sites for the redox reaction and superior OH − adsorption ability. Ni 2 Co-S exhibited excellent capacity of 1440 F g −1 at 1 A g −1 and rate retention of 74.3 % 1 to 20 A g −1 . In addition, the hybrid supercapacitor assembled by Ni 2 Co-S delivered a superior energy density of 65.2 Wh kg −1 at 400 W kg −1 , along with a stable cycling lifespan with 82 % of capacity retention and 100 % of Coulombic efficiency after 30,000 cycles. The present strategy can modulate NiCo-S phase and structure via ultrafast microwave synthesis, which provides a novel insight for development of high-performance supercapacitors.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yingkui Yan,Ye Wang,Zhenxin Zhang,Songtao Zhang,Jinhua Ye,Li Shi
The exploration of low-cost and efficient cocatalysts is vitally important for attaining reliable and affordable photocatalytic CO 2 conversion. Here, it is found that post-transition metal ions (Sn 4+ ) doped CdSe/S colloidal crystal can serve as effective photocatalyst for CO 2 reduction under visible light, in which Sn 4+ serves as an ionized cocatalyst. Specifically, Sn 4+ doped CdSe/S colloidal crystal shows an improved and stable photocatalytic CO 2 reduction performance with CO generation rate of 50.3 μmol h −1 and H 2 generation rate of 7.8 μmol h −1 in the presence of triethanolamine as sacrificial agent. The improved photocatalytic activity can be ascribed to the increased light harvesting ability, enhanced CO 2 adsorption capability and the improved surface charge transfer efficiency induced by Sn 4+ dopant.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Rui Li,Shuoyang Liang,Aikelaimu Aihemaiti,Shun Li,Zuotai Zhang
Piezocatalysis technology is emerging as a promising strategy for removing organic pollutants from water by harvesting mechanical energy from the surrounding environment. Herein, 2H-MoS 2 flower-like nanosheets with tunable S vacancies was synthesized via a hydrothermal method by adjusting pH of the precursor solution, Mo and S molar ratio, reaction time and temperature. The results showed that the presence of S vacancy leads to significantly enhanced piezoelectric response in the MoS 2 nanosheets, as confirmed by both theoretical calculation using first-principle based density functional theory and probe force microscopy (PFM) measurements. As a result, the as-obtained MoS 2 nanoflower piezocatalyst exhibited excellent degradation efficiency for Orange Ⅱ solution (removal rate > 95 % in 1 h) under ultrasonic vibration (40 kHz and 110 W). Importantly, we demonstrated for the first time that the piezocatalytic performance was tightly related with the water level in ultrasonic cleaner. The present work not only reports a simple and effective strategy for improving the piezocatalytic degradation activity of MoS 2 by introducing vacancy, but also provides new insights and deeper understanding on the underlying mechanism.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Boyu Du,Hongwei Zhu,Jingyu Xu,Yating Bai,Qingyu Wang,Xing Wang,Jinghui Zhou
Recently, multifunctional lignin-based materials are gaining more and more attention due to their great potential for low-cost and sustainability. In this work, to obtain both an excellent supercapacitor electrode and an outstanding electromagnetic wave (EMW) absorber, a series of multifunctional nitrogen-sulphur (N-S) co-doped lignin-based carbon magnetic nanoparticles (LCMNPs) had been successfully prepared through Mannich reaction at different carbonization temperature. As compared with the directly carbonized lignin carbon (LC), LCMNPs had more nano-size structure and higher specific surface area. Meanwhile, with the increase of carbonization temperature, the graphitization of the LCMNPs could also be effectively improved. Therefore, LCMNPs-800 displayed the best performance advantages. For the electric double layer capacitor (EDLC), the optimal specific capacitance of LCMNPs-800 reached 154.2 F/g, and the capacitance retention after 5000 cycles was as high as 98.14 %. When the power density was 2204.76 W/kg, the energy density achieved 33.81 Wh/kg. In addition, N-S co-doped LCMNPs also exhibited strong electromagnetic wave absorption (EMWA) ability, whose the minimum reflection loss (RL) value of LCMNPs-800 was realized −46.61 dB at 6.01 GHz with an thickness of 4.0 mm, and the effective absorption bandwidth (EAB) was up to 2.11 GHz ranging from 5.10 to 7.21 GHz, which could cover the C-band. Overall, this green and sustainable approach is a promising strategy for the preparation of high-performance multifunctional lignin-based materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Wenhui Chen,Tianxin Kang,Fenqi Du,Peipei Han,Meiling Gao,Peng Hu,Feng Teng,Haibo Fan
One-dimensional shaped ZnGa 2 O 4 , ZnO and ZnGa 2 O 4 /ZnO nanofibers were successfully prepared by electrostatic spinning technique and the photocatalytic degradation performance of tetracycline hydrochloride (TC-HCl) were studied. It was found that the S-scheme heterojunction formed in the ZnGa 2 O 4 /ZnO could greatly reduce the recombination of the photogenerated carriers and therefore improve the photocatalytic performance. By optimizing the ratio of the ZnGa 2 O 4 and ZnO, the largest degradation rate could reach 0.0573 min −1 , which was 20 times of the self-degradation rate of TC-HCl. It was verified that the h + played the key role in the reactive groups for the high performance decomposition of TC-HCl by capture experiments. This work provides a new method for the highly efficient photocatalytic degradation of TC-HCl.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jianhui Zhu,Linchao Zeng,Yumin Song,Feng Peng,Yanyi Wang,Tingshu He,Libo Deng,Peixin Zhang
Room-temperature sodium-sulfur (RT Na-S) batteries have been attracting enormous interests due to their low-cost, high capacity and environmental benignity. However, the shuttle effect and the sluggish electrochemical reaction activity of sodium polysulfides (NaPSs) seriously restrict their practical application. To solve these issues, we rationally designed an advanced Sn-doped In 2 S 3 /S/C cathode for RT Na-S batteries by magnetron sputtering in this work, which exhibited a high reversible capacity (1663.5 mAh g −1 at 0.1 A g −1 ) and excellent cycling performance (902.9 mAh g −1 after 50 cycles). The in situ electrochemical impedance spectroscopy indicated that the Sn-doped In 2 S 3 coating can accelerate charge-transfer kinetics and facilitate the diffusion of Na + . Furthermore, theoretical calculation revealed that doping of Sn into In 2 S 3 can reduce the energy band gap, thus accelerating the electron transfer and promoting the electrochemical conversion of active species. It is demonstrated that adjusting the electronic structure is a reliable method to improve the electrocatalytic effect of catalyst and significantly improve the performance of S cathode in RT Na-S batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Linfang Cui,Jie Hao,Yan Zhang,Xiaomin Kang,Jiujun Zhang,Xian-Zhu Fu,Jing-Li Luo
Fe-, and N-co-doped carbon (Fe N C) electrocatalysts are promising alternatives to Pt-based catalysts for oxygen reduction reaction (ORR); however, simultaneously enhancing their intrinsic activity and exposure of Fe active sites remains challenging. Herein, we report S-modified Fe single-atom catalysts (SACs) anchored on N,S-co-doped hollow porous nanocarbon (Fe/NS-C) for ORR. The unique hollow structure and large surface area of the SACs are favorable for mass/electron transport and exposure of Fe single-atom active sites. The as-prepared Fe/NS-C electrocatalysts display a high-efficiency ORR activity with a half-wave potential of 0.893 V versus the reversible hydrogen electrode and exceed that of the benchmark commercial Pt/C catalyst as well as most reported transition-metal based SACs. Impressively, the Fe/NS-C-based Al-air battery (AAB) displays a high open circuit voltage of 1.48 V, a maximum power density of 140.16 mW cm −2 , and satisfactory durability, outperforming commercial Pt/C-based AAB. Furthermore, Fe/NS-C exhibits considerable potential as a cathode catalyst for application in direct methanol fuel cells. Experimental and theoretical calculation results reveal that the excellent ORR performance of Fe/NS-C can be contributed to the highly active FeN 3 S sites and the unique hollow structure. This work provides new insights into the rational design and synthesis high-performance ORR electrocatalysts for energy conversion and storage devices. of employing ZIF-8 as precursors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Energy
·
2023
·
IF 9.3
Xiyun Yang,Jiamin Liu,Fulu Chu,Jie Lei,Feixiang Wu
The shuttle effect and sluggish electrochemical conversion of polysulfides have been believed to strongly influence the performances of lithium-sulfur (Li–S) batteries. Herein, we propose the synthesis of nanosized Mo x C electrocatalysts embedded on N-doped graphene and develop its application for separator modification of Li–S batteries. The N-doped graphene provides a two-dimension conductive barrier layer to chemically adsorb polysulfides and inhibit polysulfides diffusion, while Mo x C nanoparticles could serve as the functional electrocatalyst to facilitate the redox kinetics of the multiphase conversion. The Li–S coin cells with Mo x C@N-rGO-modified separator can exhibit good long-term cycling stability with a capacity decay of 0.069% per cycle after 400 cycles at 0.5C and excellent rate performance with a discharge capacity of 653 mAh/g at 4C. An area capacity of 4.5 mAh/cm 2 is also achieved with a high sulfur loading of 5.2 mg/cm 2 and a low electrolyte/sulfur ratio of ∼5 μL/mg.
✓ 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）