Catalysts
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2022
·Vol. 13
·期 1
·53
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IF 4.501
Mingwen Xiong,Ying Tao,Lanlan Fu,Donglai Pan,Yuxin Shi,Tong Hu,Jiayu Ma,Xiaofeng Chen,Guisheng Li
Photocatalysis and photoelectrocatalysis, as green and low-cost pollutant treatment technologies, have been widely used to simultaneously degrade pollutants and produce clean energy to solve the problems of environmental pollution and energy crisis. However, the disadvantages of photocatalysts in a narrow absorption range and low utilization rate of solar energy still hinder the practical application. Here we fabricate two-dimensional porous Ruddlensden–Popper type nickel-based perovskite oxide La2NiO4as a noble metal-free photoanode for photoelectrocatalytic urea oxidation under full spectrum sunlight irradiation. The transient photocurrent density under near infrared (NIR) light (λ > 800 nm) can reach 50 μA cm−2. Urea wastewater was used as the fuel to obtain low-energy hydrogen production, and round-the-clock hydrogen production was achieved with the optimal yield of 22.76 μmol cm−2h−1. Moreover, a photocatalytic urea fuel cell (PUFC) was constructed with La2NiO4as the photoanode. The power density under UV-vis-NIR was 0.575 μW cm−2. Surprisingly, the filling factor (FF) under NIR light was 0.477, which was much higher than those under UV-vis-NIR and visible light. The results demonstrated that PUFCs constructed from low-cost nickel-based perovskite oxides have potential applications for low-energy hydrogen production and efficient utilization of sunlight.Keywords:round-the-clock;near-infrared light;photoelectrocatalysis;urea oxidation reaction;photocatalytic urea fuel cell;La2NiO4
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DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 7
·期 1
·322-329
·
IF 9.931
Naveed Ur Rahman,Wasim Ullah Khan,Wenlang Li,Shaukat Khan,Javid Khan,Shizhao Zheng,Tongtong Su,Juan Zhao,Matthew P. Aldred,Zhenguo Chi
Extending the spectral response from the ultraviolet (UV) to the visible-light range and enhancing the UV-light stability are two remaining challenges for the development of perovskite solar cells (PSCs). Lanthanide complexes show a broad absorption range in the UV region and can down convert UV-light into visible-light; thus, they are potentially able to improve the device performance of PSCs. Herein, we report the fabrication of PSCs with a novel samarium (Sm)-based down conversion nanomaterial, Sr2CeO4:Sm3+ (SCOS). In comparison to the control device without a SCOS layer, the SCOS-coated device shows an enhancement of 11.4% in photocurrent and 16.2% in average power conversion efficiency (PCE), due to the harvesting and re-emitting of UV-light in the visible range through the SCOS layer. Significantly, the SCOS-coated devices retain 50% of their initial PCE for 60 hours under continuous UV-light illumination and even after 60 days of storage under ambient environment conditions, whilst for the control device the longevity is 15 hours and 26 days, respectively. The results suggest that the SCOS layer makes an important contribution in terms of both enhanced photovoltaic performance and prolonged device stability by reducing photo-loss and photo-degradation.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2020
·
IF 4.192
Shijuan Zhang,Xia Wu,Chong Ma,Yanxin Li,Jinmao You
Hexadecyl trimethylammonium bromide (CTAB) micelles were applied in the synthesis of covalent organic frameworks (COFs) for the first time to achieve the synthesis of 3D COF from 2D materials. Benzidine, one raw material for COF, was enclosed in the CTAB micelles because of the hydrophobic effect, and thus the target COF, which can be formed immediately with the aid of p-toluenesulfonic acid, grew in a micelle guided 3D form. The synthesized 3D COF showed a flower-like structure, whereas the COF synthesized without CTAB showed a smooth structure. The diameter of the 3D COFs showed direct correlations with CTAB concentrations. Moreover, the CTAB modified COF also showed a dramatically improved fluorescence property in comparison with that of normal COFs. The synthesized 3D COF showed good adsorption performance for UV filters and alkylphenols with recoveries ranged from 90.2% to 99.8%, and it also showed good fluorescence response for Pb2+. The utility of CTAB modified COF was verified in the enrichment of UV filters and alkylphenols from food packaging material migrants.
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PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
·
IF 7.65
Wenjing Ma,Yichun Ding,Mengjie Zhang,Shuting Gao,Yuansheng Li,Chaobo Huang,Guodong Fu
Fabrication of environmental-friendly, low-cost, and free-standing superhydrophobic nanofibrous membranes with additional functionalities such as self-cleaning and UV-shielding properties is highly demanded for oil-water separation. Herein, we describe the preparation of multifunctional superhydrophobic nanofibrous membrane by using a facile and novel nature-inspired method, i.e., plant polyphenol (tannic acid) metal complex is introduced to generate rough hierarchical structures on the surface of an electrospun polyimide (PI) nanofibrous membrane, followed by modification of poly (dimethylsiloxane) (PDMS). Taking an as-prepared tannic acid − Al 3+ -based superhydrophobic membrane as an example, it not only exhibits anti-impact, low-adhesive and self-cleaning functions, but also presents excellent performance in the separation of various oil-water mixtures. A high flux up to 6935 l m −2 h −1 with a separation efficiency of over 99% and the oil contents in water below 5 ppm is obtained even after repeating use for twenty separation cycles. Additionally, the membrane exhibits excellent UV-shielding property, attributing to the inherent UV-absorbing ability of tannic acid. Furthermore, the membrane also possesses additional properties including antibacterial activity, good biocompatibility, robust mechanical strength, and excellent resistance to various harsh conditions. These attractive properties of the as-prepared membrane make it a promising candidate for potential applications in industrial oil-contaminated water treatments and oil-water separation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Huiming Xiang,Yisheng Shao,Naiyun Gao,Xian Lu,Wenhai Chu,Na An,Chaoqun Tan,Xuhui Zheng,Yuqiong Gao
The degradation of sulfonamides (SAs) in the presence of bromide during the UV/free chlorine process was investigated in this study. The reactions followed pseudo first-order kinetics. With increasing bromide concentrations of 1, 5, 10–20 µM, the degradation rate was gradually raised. The contribution of different reactive species has been calculated. The degradation products and DBPs formed by SAs were determined. The mechanisms of the degradation of SAs in the presence of bromide included hydroxylation, cleavage of the pyrimidinyl group, and bromine and chlorine electrophilic addition. The concentration of brominated disinfection by-products, including DBCM, TBM and DBAN, increased with increasing bromide dosage and degradation time, while 1, 1, 1-TCP and 1, 1-DCP decreased. In an acute toxicity test, the inhibition rate decreased in the first 5–10 min then increased after 10 min degradation when 10 µM Br − was added to the system. The initial decrease may due to the formation of low toxicity substances after the cleavage of the pyrimidinyl group, while the subsequent increase may be attributable to the increased formation of DBPs.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 26
·12844-12855
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IF 3.925
Ning Yang,Lixi Xiao,Yuwei Deng,Zhiyu Wu,Hang Yin,Yang Liu,Mengru Li,Yuxuan Ye,Dandan Wang,Qiang Li,Fei Pan,Dongsheng Xia
In this study, a novel catalyst was prepared by loading OMS-2 onto activated carbon fiber (ACF) via a one-step hydrothermal method, which was further adopted for carbamazepine treatment. SEM, TEM and XRD analyses indicate that OMS-2 was successfully loaded on ACF. In the OMS-2@ACF/UV/PMS system, the degradation rate of CBZ (20 mg L−1) was 98.1% and the mineralization rate was 53.3%, which were higher than those of the traditional UV/PMS process. The enhanced performance in the presence of OMS-2@ACF was attributed to the redox cycle between Mn2+/Mn3+/Mn4+, which then accelerated PMS activation to generate more active species. The primary reactive species, including SO4˙−, ˙OH, O2˙− and 1O2, were confirmed through EPR and radical capture experiments. Additionally, the material exhibited excellent reusability even after 5 cycles, and remarkable performance for CBZ degradation was found in real water samples.
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高影响因子
CHEMOSPHERE
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2021
·
IF 7.086
Hangjun Zhang,Yinan Zhang,Yuchi Zhong,Jiafeng Ding
Polychlorinated dibenzo-p-dioxins (PCDDs), characterized by their extreme toxicity, high persistency and bioaccumulation, regard as one of the most concerned environmental pollutants on the priority list. In this study, microwave-hydrothermal and photoreduction methods were adopted for fabrication of ternary Au@Fe/TiO 2 composites for removal of 2,8-dichlorodibenzo-p-dioxin (2,8-DCDD) under UV–Vis light irradiation. The acquired materials were characterized and analyzed by XRD, TEM, XPS, UV–Vis DRS, PL , etc. As a result, the 1%Au@1%Fe/TiO 2 exhibited much higher photocatalytic activity that 96.3% of 2,8-DCDD was removed within 160 min with respect to that of Fe/TiO 2 (3.0 times) and TiO 2 (5.5 times). It revealed the active substances might be produced, which were verified by ESR analysis. In a comparison, the 1%Au@1%Fe/TiO 2 also exhibited high activity in that 97.2% of 2,8-DCDD was removed within 240 min under an anoxic atmosphere. The 1%Au@1%Fe/TiO 2 systems were all pH-dependent that 2,8-DCDD could be fully degraded in neutral conditions. The results of repeatability on 1%Au@1%Fe/TiO 2 showed that the sample was high stability. Fe doping improved the charge separation of TiO 2 and Au modification improved the activity via SPR effect and Mott-Schottky barrier. The degradation mechanisms and pathways were proposed and discussed in detail. The current work develops a new approach on photocatalytic oxidation and reductive dechlorination of dioxins and may open a new opportunity to extend the application range of TiO 2 catalysts.
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高影响因子
POLYMER DEGRADATION AND STABILITY
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2025
·
IF 7.4
Jieyun Zhao,Lina Jiang,Chunlong Zuo,Lei Tan,Wei Tan,Yuanlin Ren,Ping Li,Xiaohui Liu
Triggered by heightened public safety concerns and the imperative of sustainable chemistry, an urgent demand has emerged for the development of eco-friendly and durable flame retardant Lyocell fibers. However, reconciling high flame retardancy, washing durability, mechanical strength, and formaldehyde-free processing within an environmentally benign and feasible approach remains a significant challenge. To address the issue, a novel co-coordination system of biomass tea polyphenols, L-lysine and Fe 3+ , cooperating with covalent linking of 3-epoxypropyl trimethoxysilane was constructed. Compared with Lyocell fabric, the treated Lyocell fabric exhibited substantial reductions of 70.35% for total heat release (THR) and 61.82% for peak heat release rate (PHRR), alongside a limiting oxygen index (LOI) value of 26.8% even after 50 laundering cycles. Meanwhile, the modified fabric had excellent UV resistance, antibacterial and hydrophobic properties. Encouragingly, the proposed modification process basically retained the high mechanical properties of the Lyocell fabrics, providing a sustainable, green route toward multifunctional, durable Lyocell textiles for protective and technical apparel applications.
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产品关联
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Pengwei Yan,Chao Feng,Minghua Li,Jimin Shen,Zhonglin Chen,Fang Ma,Jing Kang,Xinwei Zhu,Yabin Li,Yizhen Cheng
The UV-triggered ozone micro-nanobubble (UV/O 3 -MNBs) system is specifically designed for long-lasting decontamination and control of disinfection byproducts (DBPs), demonstrating its effectiveness and promising potential. UV-triggered O 3 -MNBs efficiently induce O 3 decomposition to form hydroxyl radicals (·OH), thereby greatly boosting their contribution rates to over 98.0 % during water decontamination. By leveraging the powerful ·OH oxidation, the UV/O 3 -MNBs system exhibits superior performance in removing trace organic compounds from actual water bodies, and improving total organic carbon (TOC) removal efficiency. The constructed system showed high performance during long-term running with continuous entrance of pollutants. Notably, it reduces the generation potential of bromate (BrO 3 − ) by interfering with HOBr/OBr − through ·OH reactions. Meanwhile, it significantly reduces Cl/Br-THMs formation potential compared with direct chlorination disinfection (24 h), from 18.9 μg/L to 11.6 μg/L. Simultaneously addressing refractory micro-pollutant abatement and DBPs control, the UV/O 3 -MNBs effectively reduce energy consumption compared to the O 3 -MNBs oxidation alone. This study innovatively coupled the UV and O 3 -MNBs for micropollutants removal and DBPs control, which provides a novel insight into durable water purification and serves as a valuable reference for practical applications.
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高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
·
IF 8
Yan Li,Yongcai Tian,Yuyao Zhong,Xiangrui Zeng,Wenqian Zhao,Longxiang Zhang,Haoyuan Song,Yuwei Liang,Ming Yan,Shiji Jiang,Jun Xie
This study reports the green synthesis of ammonium polyphosphate-grafted lignin (APP@Lig) without organic solvents. The synthesis employed ammonium dihydrogen phosphate, urea, and phosphoric acid through nucleophilic substitution and polycondensation. Piperazine pyrophosphate (PAPP) and APP@Lig were mixed at a 3:1 mass ratio and added to a high-density polyethylene (HDPE)/polyolefin elastomer (POE) composite system (PEPO) as flame retardants. With 30 wt% total flame retardant content, the composite achieved a UL-94 V-0 rating and a limiting oxygen index (LOI) of 28.9 %. Cone calorimetry confirmed that the addition of APP@Lig reduced heat release significantly. Compared with pure PEPO, the composite showed 36.3 % lower total heat release (THR) and 82.9 % lower peak heat release rate (pHRR). The peak CO₂ release rate also decreased by 0.4 g·s⁻¹ . In addition, the fire performance index (FPI) increased by 76.5 % compared with the system containing only 30 % PAPP, indicating improved fire safety. The composite showed excellent UV resistance (UPF 44.31) due to lignin’s aromatic structures and phenolic hydroxyl groups. Overall, this work introduces a practical strategy for combining inorganic and bio-based flame retardants to enhance both flame retardancy and weather resistance in HDPE-based composites.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2025
·
IF 9.8
Xin Qu,Ce Wang,Yuanyu Zhao,Jinqiu Ye,Ping Hu,Rui Zhao,Yong Liu
Human activities, ranging from medical applications to space exploration, face significant threats from multiband electromagnetic radiation. This challenge is particularly pronounced in the complex radiation environments of space. There is an urgent need for high-efficiency, stable broadband electromagnetic shielding materials to safeguard human health and equipment safety. Herein, a Bi-modified W 18 O 49 /MWCNTs/PAN hybrid nanofiber membrane is successfully prepared by electrospinning and post-treatment. Relying on the synergistic effect of Bi, W 18 O 49 , MWCNTs, and porous structures, excellent broadband radiation protection capability is achieved: (i) Low near-infrared-visible-light (NIR-VIS) transmittance (0.62 %); (ii) Ultraviolet (UV) transmittance of only 0.012 % and UPF value as high as 2000; (iii) Mass attenuation coefficient up to 16.18 cm 2 g −1 and attenuation ratio of 85.74 % (thickness: 4 mm) at 33 keV X-ray energy. Furthermore, porous structure and high specific surface area give the membrane ultralight density (0.36 g cm −3 ), flexibility, and outstanding air permeability (8.5 kg m −2 d −1 ). Even after 2000 bends, it still maintains stable structure and performance. Meanwhile, low thermal conductivity (42.2 mW m −1 K −1 ) and superior temperature resistance (300 °C) enable it to adapt to complex and changing environments. These advantages make the membrane highly promising for radiation protection in medical, industrial, and aerospace applications.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Zhiheng Zhang,Yaxiong Ji,Hao Lu,Tao Shen,Tianen Chen,Yuanhao Wang
Hydrogen isotope separation is essential in industrial and scientific applications. Traditional methods such as rectification and electrolysis are energy intensive and complex. In recent years, graphene oxide membranes (GOMs) have received widespread attention as a new type of membrane separation material. However, recent reports indicate that it has a lower permeability flux, which reduces its practicality. In this study, an innovative method for hydrogen isotope separation was proposed, utilizing hot vapor-air gap membrane distillation (HV-AGMD) with UV-treated GOMs. By adjusting the competitive relationship between the free diffusion of H 2 O/D 2 O and the adsorption-desorption mechanism, the osmotic flux is increased by about 10 times to 9.36 L·m −2 ·h −1 . This study also optimized the pH, concentration and GO dosage of the dispersion for preparing GOMs. These findings provide valuable insights for achieving cost-effective separation of hydrogen isotopes in water.
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高影响因子
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