APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Dan Li,Zuquan Gan,Cailin Zhang,Xiuqiu Wang,Mingzhen Zheng,Xiaoyun Gao,Yue Huang,Youjun Fan,Shuifeng Zhang,Fuqin Zheng,Wei Chen
The exploration of sustainable approaches for plastic waste disposal has emerged as an urgent imperative task. This research presents an innovative and eco-friendly electrochemical route to degrade plastic waste, ethylene glycol (EG), into value-added formate. To this end, an interesting hollow FeOOH/CoOOH heterostructure is successfully fabricated for EG oxidation. The difference in work functions between FeOOH and CoOOH results in the establishment of a built-in electric field (BEF), which is beneficial for the adsorption of EG and *OH. As a result, the FeOOH/CoOOH demonstrates outstanding catalytic performance in the EG oxidation reaction (EGOR) with an exceptionally low potential of only 1.32 V at 10 mA cm -2 and a high Faraday efficiency of 92.19% for formate generation. Glycollic acid is identified as a pivotal intermediate in the EGOR by in-situ infrared spectroscopy. Theoretical computations disclose that the FeOOH/CoOOH heterostructure not only causes an upward shift of the d-band center but also largely enhances the *OH adsorption, thus speeding up the cleavage of the inert C-C bond and markedly facilitating the conversion of EG to formate. This research not only enriches the fundamental comprehension of the EGOR but also provides deep insights for the rational design of highly selective and active EGOR catalysts.
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高影响因子
ADVANCED MATERIALS
·
2021
·Vol. 33
·期 11
·2005587
·
IF 30.849
Ke Wang,Hongfang Du,Song He,Lei Liu,Kai Yang,Jinmeng Sun,Yuhang Liu,Zhuzhu Du,Linghai Xie,Wei Ai,Wei Huang
Layered γ-type iron oxyhydroxide (γ-FeOOH) is a promising material for various applications; however, its sheet-shaped structure often suffers from instability that results in aggregation and leads to inferior performance. Herein, a kinetically controlled hydrolysis strategy is proposed for the scalable synthesis of γ-FeOOH nanosheets arrays (NAs) with enhanced structural stability on diverse substrates at ambient conditions. The underlying mechanisms for the growth of γ-FeOOH NAs associated with their structural evolution are systematically elucidated by alkalinity-controlled synthesis and time-dependent experiments. As a proof-of-concept application, γ-FeOOH NAs are developed as electrocatalysts for the oxygen evolution reaction (OER), where the sample grown on nickel foam (NF) exhibits superior performance of high catalytic current density, small Tafel slope, and exceptional durability, which is among the top level of FeOOH-based electrocatalysts. Density functional theory calculations suggest that γ-NiOOH in situ generated from the electrooxidation of NF would induce charge accumulation on the Fe sites of γ-FeOOH NAs, leading to enhanced OER intermediates adsorption for water splitting. This work affords a new technique to rationally design and synthesize γ-FeOOH NAs for various applications.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yufei Cheng,Ming Gong,Tete Xu,Enzhou Liu,Jun Fan,Hui Miao,Xiaoyun Hu
Antimony selenide (Sb2Se3) as a light-harvesting material has gradually attracted the attention of researchers in the field of photoelectrocatalysis. Uniquely, the crystal structure consists of one-dimensional (Sb4Se6)n ribbons, with an efficient carrier transport along the ribbon [001] direction. Herein, a novel Sb2Se3@Sb2S3 core–shell nanorod radial–axial hierarchical heterostructure was successfully fabricated by epitaxial growth strategy. Taking advantage of the isomorphous and anisotropic binding modes of (Sb4S(e)6)n ribbons for Sb2Se3 and Sb2S3, the epitaxially grown core–shell heterostructure forms a van der Waals heterojunction across the radial direction and covalently bonded heterojunction along the axial direction. A photocurrent of 1.37 mA cm–2 was achieved at 0 V vs RHE for the hierarchical Sb2Se3@Sb2S3 nanorod photoelectrode with [101] preferred orientation, up to 40 times higher than for pure Sb2Se3. Moreover, the FeOOH was introduced as a cocatalyst. The photoelectrode decorated with FeOOH shows better stability with a H2 generation rate of 18.9 μmol cm–2 h–1 under neutral conditions. This study provides a new insight into the design of antimony chalcogenide heterostructure photoelectrodes for photoelectrochemical water splitting.
研究领域:
光电催化
·
材料科学
·
纳米技术
·
能源材料
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Shanshan Su,Chengjin Cao,Yaping Zhao,Dionysios D. Dionysiou
Roxarsone (ROX) is extensively used as a feed additive which tends to leave toxic inorganic arsenic (As) in the natural environment. A composite of reduced graphene oxide and carbon nanotubes was impregnated with goethite designated as α-FeOOH@GCA and tested as an integrated catalyst and adsorbent for ROX decontamination. Nearly 100% of the ROX was transformed in α-FeOOH@GCA activating persulfate (PS) under UV 365 irradiation system at relatively low dosage of the α-FeOOH@GCA catalyst (250 mg L −1 ) in 120 min. The As(V) released in the ROX oxidation was simultaneously adsorbed onto the surface of the α-FeOOH@GCA. A possible ROX transformation pathway is proposed. The As(V) adsorbed on catalyst was recovered and used to form an efficient Ag 3 AsO 4 photocatalyst. This work further extends the oxidation-adsorption technology in solving organoarsenical contamination without producing secondary pollution.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Feng Liu,Huanhuan Zhang,Nian Liu,Junxia Wang,Maolin Chen,Feiyue Qian
Wafer surface treatment is a crucial step in the integrated circuit packaging process, which would generate high-strength organic wastewater using propylene glycol monomethyl ether (PGME) as a photoresistor thinner. This study investigated the performance of Fenton oxidation and catalytic ozonation (O 3 /H 2 O 2 /FeOOH) for removing refractory organics in wafer surface treatment wastewater by optimizing operation and combining utilizations. Gas chromatography–mass spectrometry was employed to analyze intermediates composition in the effluents treated by various advanced oxidation processes , and the toxicity of organics was predicted using the Quantitative Structure-Activity Relationship tool. Fenton oxidation outperformed O 3 /H 2 O 2 /FeOOH in the removal efficiencies of chemical oxygen demand (COD) and PGME, but produced 9.60 kg·m −3 of chemical sludge . Additionally, 3-hydroxy- N -phenylaniline, an acutely toxic compound, was dominant in the intermediates of Fenton oxidation, indicating the ecological risks of chemical sludge. O 3 /H 2 O 2 /FeOOH followed by Fenton oxidation (O 3 /H 2 O 2 /FeOOH + Fenton) exhibited higher total organic carbon removal (77.7 %) with less chemical sludge production (8.47 kg·m −3 ) than the reverse combination (Fenton + O 3 /H 2 O 2 /FeOOH). Although the intermediates of aniline, ketone, and ester exhibited considerable acute and developmental toxicity , the significant improvement in biodegradability of the effluents (BOD 5 /COD ratio of 0.36 > 0.02 for raw wastewater) favored subsequent biological treatment. These findings provide guidance for the cost-effective treatment of wafer surface treatment through rational designing combined processes.
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高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Hongshan Jia,Yingqing Zhan,Fei Zhu,Ximin Chen,Yajie Lei,Xinyue Duan,Jie Liu
In the practical purification of oily wastewater, the application of polymer-based membrane is greatly restricted due to the oil adhesion and complicated fouling problems. Herein, to conquer the aforementioned challenges, we prepared the polyphenol mediated Photo-Fenton self-cleaning and superhydrophilic/underwater superoleophobic α-FeOOH/g-C 3 N 4 @PVDF composite membrane via simple vacuum-assisted self-assembly technology. The g-C 3 N 4 nanosheets modified by tannic acid were introduced into the surface of PVDF ultrafiltration membrane, in which the intercalation structure was regulated by the random interpenetration of α-FeOOH nanorods . The abundant hydroxyl and amino groups and the rough micro-nano structure formed by intercalation structure were favorable for the superhydrophilic feature (WCA = 0°, UOCA>150°), thus resulting in ultra-low oil adhesion. Specially, the intercalation structure improved the water permeation channel, further promoting the water/oil separation flux. Therefore, the composite membrane exhibited superior separation flux (452.35–650.21 L m −2 h −1 ) and separation efficiency (>99.06 %) for various surfactant-stabilized emulsions. Moreover, thanks to the Photo-Fenton reaction, the composite membrane showed excellent degradation efficiency on simulated pollutants (various dyes) within 60 min (MeB: 95.55 %, CR: 90.83 %, MO: 98.90 %, CV: 95.11 %), showing satisfactory photocatalytic self-cleaning performance. This work provides a strategy for the potential application of polymer-based membranes in the treatment of complex surfactant-stabilized emulsion wastewater from petrochemical industry.
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高影响因子
IONICS
·
2023
·Vol. 29
·期 3
·1187-1197
·
IF 2.8
Zhong Xiaoqiu,Yao Qingyun,Tang Shuangmei,Kong Zhenzhen,Yang Chao,Zang Limin,Qiu Jianhui
Fibrous all-solid-state flexible supercapacitors have attracted much attention in the functional field of wearable electronic devices due to their excellent deformability. It is very important to select suitable flexible substrate, active substance, and binding means to improve electrode performance. In this paper, carbon fiber with high conductivity and the active site was used as a flexible substrate, and FeOOH with high specific capacity was grown on the surface of carbon fiber yarn by one-step in situ electrodeposition. The influence of different deposition conditions on the morphology of FeOOH and the electrochemical performance of the flexible electrode was studied. The electrode obtained by deposition at a constant voltage of 2.5 V for 150 min has a high specific capacitance of 10.44 F cm −3 . In addition, the device has a high voltage window of 1.6 V and excellent cycle stability of 7000 cycles when formed as an all-solid-state symmetric supercapacitor.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wei Yan,Zhuang Shi,Hao Feng,Jinshi Yu,Wenmiao Chen,Yanli Chen
In this study, we employed a straightforward phosphorylation approach to achieve a dual objective: constructing c-a heterostructures consisting of crystalline Ni 12 P 5 and amorphous FeOOH, while simultaneously enhancing oxygen vacancies . The resulting oxygen evolution reaction (OER) catalyst, Ni 12 P 5 /FeOOH/NF, exhibited remarkable performance with current densities of 500 mA cm −2 in both 1 M KOH and 1 M KOH + seawater , requiring low overpotentials of only 288 and 365 mV, respectively. Furthermore, Ni 12 P 5 /FeOOH/NF exhibited only a slight increase in overpotential, with increments of 18 mV and 70 mV in 1 M KOH after 15 and 150 h, and 32 mV and 108 mV in 1 M KOH + seawater at 500 mA cm −2 after 15 and 150 h, respectively. This minimal change can be attributed to the stabilized c-a structure, the protective coating of Ni 12 P 5 , and superhydrophilic. Through in-situ Raman and ex-situ XPS analysis, we discovered that Ni 12 P 5 /FeOOH/NF can undergo a reconfiguration into an oxygen vacancy-rich (Fe/Ni)OOH phase during OER process. The elevated OER activity is mainly due to the contribution of the oxygen vacancy-rich (Fe/Ni)OOH phase from the reconfigure of the Ni 12 P 5 /FeOOH/NF. This finding emphasizes the critical role of oxygen vacancies in facilitating the production of O O species and overcoming the limitations associated with OOH formation, ultimately enhancing the kinetics of the OER.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Peng Zhao,Qiancheng Liu,Xulin Yang,Sudong Yang,Lin Chen,Jie Zhu,Qian Zhang
The construction of binder-free electrodes with well-defined three-dimensional (3D) morphology and optimized electronic structure represents an efficient strategy for the design of high-performance electrocatalysts for the development of efficient green hydrogen technologies. Herein, Ru nanocrystals were modified on 3D interconnected porous FeOOH nanostructures with open network-like frameworks on NiFe foam (Ru/FeOOH@NFF), which were used as an efficient electrocatalyst. In this study, a 3D interconnected porous FeOOH with an open network structure was first electrodeposited on NiFe foam and served as the support for the in-situ modification of Ru nanocrystals. Subsequently, the Ru nanocrystals and abundant oxygen vacancies were simultaneously incorporated into the FeOOH matrix via the adsorption-reduction method, which involved NaBH 4 reduction. The Ru/FeOOH@NFF electrocatalyst shows a large specific surface area , abundant oxygen vacancies , and modulated electronic structure, which collectively result in a significant enhancement of catalytic properties with respect to the oxygen evolution reaction (OER) and urea oxidation reaction (UOR). The Ru/FeOOH@NFF catalyst exhibits an outstanding OER performance, requiring a low overpotential (360 mV) at 200 mA cm −2 with a small Tafel slope (58 mV dec -1 ). Meanwhile, the Ru/FeOOH@NFF catalyst demonstrates more efficient UOR activity for achieving 200 mA cm −2 at a lower overpotential of 272 mV. Furthermore, an overall urea electrolysis cell using the Ru/FeOOH@NFF as the anode and Pt as the cathode (Ru/FeOOH@NFF||Pt) reveals a cell voltage of 1.478 V at 10 mA cm −2 and a prominent durability (120 h at 50 mA cm −2 ). This work will provide a valuable understanding of the construction of high-performance electrocatalysts with 3D microstructure for promoting urea-assisted water electrolysis.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ran Deng,Xu-Ze Xia,Jian-Chen Han,Qing-Yun Wu,Hao-Cheng Yang
Catalytic membrane reactors based on photo-Fenton reactions have been widely applied in organic wastewater treatment. Conventional porous membrane reactors require a multi-cycle operation to achieve a high degradation efficiency. To realize the continuous treatment of wastewater with high efficiency, we propose a novel siphon-driven interfacial photocatalytic reactor based on the β -FeOOH-coated fabrics in the current work, in which the feed transport is within the fabric rather than across the fabric. The liquid flow is driven by gravity without additional energy input and can be adjusted by the structural parameters to match the reaction rate. Moreover, the confined capillary flow ensures sufficient contact between the feed and catalysts, as well as sufficient sunlight utilization, leading to the high degradation efficiency (>99 %) for a variety of organic contaminants such as tetracycline and dyes. The relationship between the fabric structural parameters and degradation performance was also investigated to achieve an optimal design.
研究领域:
环境工程
·
化学工程
·
水处理
·
光催化
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhiheng Pang,Fang Cui,Qinghai Ma,Tieyu Cui
As an alternative to noble metal oxygen evolution reaction (OER) catalysts, iron-based materials face limitations in their practical applications due to their relatively low activity and conductivity, despite their cost-effectiveness. In this study, we developed a Ce-doped amorphous FeOOH catalyst (Ce-FeOOH) using an electron modulation strategy, leveraging the strong electron-absorbing capability of Ce 4+ ions to regulate the electronic structure of the FeOOH active site. Experimental results and characterizations demonstrated that Ce 4+ extract electrons from the iron sites via the Ce(IV)-O-Fe electronic bridges, generating highly active iron species with elevated oxidation states, thereby effectively enhancing the OER catalytic performance. The optimized Ce-FeOOH-3:2 exhibited outstanding OER performance in 1.0 M KOH, achieving a low overpotential of 248 mV at a current density of 10 mA cm −2 , a Tafel slope of 44 mV dec −1 . Moreover, the material exhibits stable continuous electrolysis performance for 100 h at overpotentials of 250 mV and 384 mV, respectively. This work provides a novel approach to synergistically modulating the electronic state of iron-based catalysts through high-valent metal doping and structural amorphization, offering valuable insights of the design and development of highly efficient and stable non-precious metal OER catalysts.
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高影响因子
Energy & Environmental Science
·
2018
·Vol. 12
·期 1
·194-205
·
IF 30.067
Jin-Qi Xie,Ya-Qiang Ji,Jia-Hui Kang,Jia-Li Sheng,Da-Sha Mao,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
Although integrated energy storage devices, such as in-plane micro-supercapacitors (MSCs), are attractive for powering portable microelectronic devices, it is still challenging to develop patterning techniques with high practicability and to rationally design and fabricate electrochemically active materials using feasible procedures. Here, we propose a facile solution-immersion method of fabricating interdigitated copper electrodes with an in situ converted array of Cu(OH)2@FeOOH nanotubes (NTs). A copper current collector can be patterned together with widely employed copper circuits by a facile copper-patterning approach based on cost-effective electroless catalytic deposition of copper with patterned Ag catalysts, which is greatly conducive to the integration of in-plane energy storage devices into microelectronic systems. Furthermore, the rationally designed array of Cu(OH)2@FeOOH NTs, which was converted in situ from the patterned copper electrodes, was demonstrated to be an excellent electrochemically active material with advantages that included a porous structure with a large specific surface area, excellent wettability by the electrolyte, short ion diffusion lengths and one-dimensional electron transport pathway. The resulting MSC devices that were fabricated with the interdigitated Cu(OH)2@FeOOH/Cu electrodes exhibited a high specific capacitance (58.0 mF cm−2 at 0.1 mA cm−2), a high energy density (18.07 μW h cm−2), excellent cycling stability and desirable flexibility.
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高影响因子
危险品化学品经营许可证（带存储）