JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Yingpeng Gu,Yue Sun,Weisheng Zheng
Cupric (Cu(II)) complexes in industrial wastewater are responsible for the failure of conventional alkaline precipitation, but the properties of cuprous (Cu(I)) complexes at alkaline circumstance have not been focused. This report proposed a novel strategy for the remediation of Cu(II)-complexed wastewater by coupling alkaline precipitation with green benign reductant, namely, hydroxylamine hydrochloride (HA). This remediation process (HA-OH) exhibits superior Cu removal efficiency that cannot be achieved with the same dosage of oxidants (3 mM). The possibility of Cu(I) activated O 2 catalysis and self-decomplexation precipitation were investigated, and the results identified that 1 O 2 was generated from Cu(II)/Cu(I) cycle, but it was insufficient to annihilate organic ligands. Cu(I) self-decomplexation was the dominate mechanism of Cu removal. For real industrial wastewater, HA-OH process can realize the efficient Cu 2 O precipitation and Cu recovery. This novel strategy utilized intrinsic pollutant in wastewater without introducing other metals, complicated materials, and expensive equipment, broadening the insight for the remediation of Cu(II)-complexed wastewater.
研究领域:
环境工程
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废水处理
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化学工程
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Wenqi Zhang,Cong Liu,Xiangrui Meng,Jie Sun,Huayu Tian
The preparation of adsorbents with low cost, efficient adsorption and high profitability for gold recovery has important practical applications. In this work, synergistic poly (imine dioxime and amidoxime) (PDA) adsorbents were successfully prepared for gold recovery. An inexpensive engineering polyacrylonitrile (PAN) fiber is selected as the adsorbent substrate covalent binding with hydroxylamine hydrochloride to obtain PDA. The PDA surface with imine dioxime and amidoxime groups has a rich charge density and is more easily combined with gold ions through electrostatic interactions. The adsorption process of gold on PDA is a spontaneous endothermic process with monomolecular layer adsorption and the adsorption capacity increases with the increasing temperature under acidic conditions. The maximum adsorption capacity of PDA can reach 2937 mg g −1 at 25 °C and pH = 2 with an equilibrium time of 168 h. Meanwhile, excellent gold adsorption performance is also observed for PDA in simulated water treatment filler and water circulation reactor as well as interference conditions with other metal ions. Surprisingly, PDA has an ultra-low preparation cost ($ 2.54 × 10 2 kg −1 ), yet enables high-value gold (2.9 kg) for every kilogram of PDA with significant economic benefits. Therefore, this work will provide new ideas for the development of inexpensive, highly efficient, and specialized adsorbent preparation for gold recovery.
研究领域:
材料科学
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环境工程
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化学工程
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冶金学
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FOOD CHEMISTRY
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2024
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IF 8.5
Meixia Wu,Jinbin Zhang,Yao Fan,Hengye Chen,Songtao Wang,Caihong Shen,Haiyan Fu,Yuanbin She
Baijiu authenticity has been a frequent problem driven by economic interests in recent years, so it is important to discriminate against baijiu with different origins. Herein, we proposed a simple and efficient esters-targeted colorimetric sensor array mediated by hydroxylamine hydrochloride. Esters undergo a nucleophilic addition reaction with hydroxylamine hydrochloride to form hydroxamic acid, which rapidly forms a purplish red ferric hydroxamate under FeCl 3 ·6H 2 O. Bromophenol blue and rhodamine B enrich the color effects. The array detected 12 esters with a detection limit on the order of 10 −5 of most esters and 16 mixed esters with R 2 > 0.999 and recoveries close to 100%. Otherwise, for discriminating 34 strong-aroma baijius (SABs), the array has an accuracy of 98% according to the origin, and 95% according to the grades, with a response time of 1 min. This study provides a new strategy for authenticity determination and quality control of baijiu.
研究领域:
化学
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分析化学
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食品科学
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传感器技术
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yurun Tian,Fengyi Zhou,Zeyu Wang,Wenjun Chen,Rui Qin,Yu Chen,Tiancheng Mu
The substantial increase in spent lithium-ion batteries (SLIB) has resulted in serious environmental impacts that require attention and appropriate intervention. In this study, we designed a DES composed of ethylene glycol (EG) and hydroxylamine hydrochloride (NH 2 OH·HCl) with appropriate acidity, remarkable reductive property and strong coordination capability for the efficient one-step leaching of cobalt ions and lithium ions from LiCoO 2 (LCO). Following leaching at a modest temperature of 80 °C for 8 h, the solubility of LiCoO 2 reaches an 83.3 mg g −1 (much higher than previous works), accompanied by remarkably high leaching efficiencies of up to 99.7 % for lithium and 88.0 % for recovery of cobalt. Notably, this approach significantly enhances the solubility of the LiCoO 2 while upholding leaching efficiency. Importantly, this study achieves a one-step separation of lithium and cobalt, avoiding metal co-precipitation and simplifying the separation procedure. Furthermore, the residual components within the system can be reclaimed and recycled. This work provides an efficient and sustainable route for the recovery of precious metals from lithium-ion batteries, characterized by its cost-effectiveness and straightforward processing.
研究领域:
环境科学
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材料科学
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化学工程
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可持续技术
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DOI
高影响因子
MOLECULES
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2024
·Vol. 29
·期 13
·3046
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IF 4.2
Jingyi Zhang,Congmei Lin,Feng Li,Xinhao Wei,Yusen Chen,Yanyong Fu,Xiaoping Yu,Biao Zhang,Zihong Ye
Cancer is one of the major public health challenges in the world, which is characterized by rapid progression and high mortality. Immunotherapy, represented by PD-1 monoclonal antibody, has significantly improved the efficacy of malignant tumors and has become one of the most popular immunotherapy methods at present. Therefore, there is an increasing demand for novel detection methods for PD-1 monoclonal antibodies. The aim of this work was to establish a rapid, simple, and sensitive immunochromatographic test strip (ICTS) based on the AuNPs enlargement for both visual and instrumental detection of the PD-1 monoclonal antibody concentration. The mixed solution of NH2OH·HCl and HAuCl4was used as an enhancement solution to lower the detection limit and achieve higher sensitivity. A test strip reader was used to construct a visualized quantitative detection standard curve for the PD-1 monoclonal antibody concentration. The LOD was 1.58 ng/mL through a triple signal-to-noise ratio. The detection time was within 10 min. The constructed test strips can rapidly, accurately, and efficiently detect the concentration of PD-1 monoclonal antibody in real samples.
研究领域:
医学生物技术
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免疫学
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癌症研究
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纳米技术
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2025
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IF 11.3
Weifang Zhang,Lianyang Huang,Weijing Guo,Yuan Cheng,Menglu Zhang,Aristides Bakandritsos,Radek Zbořil,Chunli Wang
In Fenton-like reactions, the elevation of the spin state of transition metals enhances the redox processes of adsorbed peroxides and improves the oxidative performance. This study reports an easily accessible carbon-supported high-spin cobalt cluster, Co–NCs/C, which demonstrates enhanced kinetics through selective high-valent cobalt-oxo species (Co(IV)═O) generation for peroxymonosulfate (PMS)-induced catalytic oxidation. This catalyst achieves rapid degradation of sulfamethoxazole (SMX) within the modified kinetic rate constant (k-value) of 2001.7, surpassing all previously reported Co-based catalysts. Furthermore, combined experimental characterizations and density functional theory calculations demonstrate the stable size distribution of cobalt clusters anchored on carbon supports. Within a broad size distribution (0–6 nm), these clusters consistently retain high-spin configurations and exhibit excellent catalytic performance in SMX degradation. The tailored electronic structure of the high-spin Co sites enhances the adsorption and activation of PMS, thereby accelerating the degradation process. This work provides a practical and cost-effective strategy for designing high-efficiency catalysts for PMS-based advanced oxidation processes.
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ACS ES&T Water
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2025
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IF 4.3
Guiwei Li,Tengchong Ma,Jiahao Hou,Yili Wang,Baoyou Shi
Manganese (Mn) and iron (Fe) deposits contribute primarily to drinking water discoloration. This study investigated Mn and Fe deposition and release impacted by pipe materials using coupons. Over a 103 day deposition experiment, Mn was found to deposit significantly more readily (69.73%) than Fe (35.76%). Among the materials tested, cement mortar exhibited the highest level of Mn and Fe deposition, probably due to its high surface roughness and positively charged surface which were more conductive to deposit accumulation. Between the other materials, stainless steel with a passive film of chromium oxides was more favorable for Mn deposition, while plastic materials accumulated more Fe deposits than stainless steel. Notably, Fe deposition exhibited a significantly stronger dependence on pipe materials compared to Mn deposition. Mn deposited via heterogeneous Mn(II) oxidation on coupon surface, while Fe deposits resulted from the physical sedimentation of Fe(OH)3, accounting for their distinct deposition patterns. Under hydraulic disturbance, cement mortar coupons exhibited the least release of deposits. When coexisting in chlorinated water, Mn and Fe displayed strong codeposition and corelease behaviors. This study highlights the need to prioritize Mn control at treatment plants, alongside routine maintenance and careful pipe material selection in deposition-prone areas, to manage multimetal deposits.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Rui Zhang,Shaoyin Peng,Zhenbei Wang,Fei Qi,Chen Li,Yatao Liu,Fan Li,Amir Ikhlaq,Jolanta Kumirska,Ewa Maria Siedlecka,Oksana Ismailova,Zukhra Kadirova
Membrane fouling is a significant obstacle for ultrafiltration application in the water treatment field. This study investigates the synergistic effects of ferrate (Fe(VI)) oxidation and aluminum chloride (AlCl₃) coagulation on dissolved organic matter (DOM) removal and ultrafiltration membrane fouling alleviation. Four pretreatment strategies, coagulation (AlCl₃), oxidation (K₂FeO₄), coagulation followed by oxidation (C O), and oxidation followed by coagulation (O C) were compared. Results showed that the interaction between oxidation and coagulation generated more active species, including Al 13 , Al 30, and Fe 3+ . The collaboration of these species during the coagulation-oxidation-ultrafiltration (C-O-F) process achieved the highest DOM removal (73.6 % DOC and 80 % UV 254 ) and the lowest total membrane fouling. Specifically, DOM with high and medium-molecular-weight components could be effectively removed. Furthermore, the C O process formed larger and looser flocs with a diameter of 1100 μm and a fractal dimension of 1.32. With better DOM removal and floc properties, a porous cake layer without gel-like structure would accumulate on the ultrafiltration membrane surface during the C-O-F process, and fewer DOM deposited in the membrane pores, leading to lower physically reversible fouling and chemically reversible fouling. These results were verified by the SEM image of the fouled membrane, and the membrane pore diameter after physiochemical cleaning could be restored to 0.0117 ± 0.0086 μm. This study innovative reveals the mechanisms of synergistic effects between AlCl 3 and K 2 FeO 4 , which provides new insights for the sustainable development of ultrafiltration technology.
研究领域:
环境工程
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水处理技术
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膜科学
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高级氧化技术
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胶体与界面化学
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Fei Lin,Zhibin Wu,Fang Luo,Zhenyu Lin,Jian Wang,Wu Wang,Rui Li,Guanhua Fang,Bin Qiu
High molecular weight and inert functional groups limit the biomedical utility of natural polysaccharides, such as Tremella fuciformis polysaccharides (TFPs). In this study, we describe a H 2 O 2 -driven, one-step method for the concurrent oxidation and degradation of TFPs, which reduces the molecular weight from 1079.6 to 4.6 kDa while introducing aldehyde (0 %–0.99 %) and carboxyl (1.22 %–9.80 %) groups. By altering the H 2 O 2 concentration, we obtained oxidized TFPs (OTFPs) with defined properties, namely OTFP-1 (13.5 kDa, 0.36 % aldehyde) exhibiting low cytotoxicity (73 % viability at 15 mg/mL); OTFP-3 (5.0 kDa, 0.80 % aldehyde) exhibiting enhanced antioxidant (DPPH/ABTS: 83 %/89 %), anti-inflammatory (IL-6/TNF-α reduction: 46 %/53 %), and ultraviolet B repair (36 % recovery) activities; and OTFP-4 (4.6 kDa, 0.99 % aldehyde) displaying broad-spectrum antibacterial activity (minimum inhibitory concentration: 7–9 mg/mL). The aldehyde groups also yielded injectable, self-healing hydrogels through dynamic Schiff base bonds. This green strategy decouples molecular weight and functionalization and provides a versatile platform for tailored bioactive materials.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Xiaoshan Zheng,Mengxi Tan,Chong Zhou,Ruoxuan Xiong,Wanchao Yu,Binbin Wu,Junye Ma,Baoliang Chen,Zhenhua Pan,Chiheng Chu
Soil contamination with organic chemicals is a critical global environmental challenge. Recently, monitored natural purification, though eco-friendly, suffers from slow remediation rates. Here, we report an innovative approach through regulating endogenous iron cycle and hydroxyl radical (•OH) productions to accelerate natural soil purification while maintaining soil functionality. By periodically adding mild concentrations of H 2 O 2 to activate soil iron minerals, we triggered an endogenous Fenton-like reaction, resulting in a significant 10.4-fold increase in •OH generation. Simultaneously, oxidized iron was regenerated through microbial reduction, completing the biogeochemical redox cycles of iron. Over five cycles of these redox processes, the pollutant removal rate was enhanced by 6.3-fold, achieving > 95 % phenol degradation. Compared to chemical remediation, this approach reduced organic matter loss by 91 % and preserved 96 % microbial activity. Furthermore, treated soils maintained fertility, supporting vigorous lettuce and cabbage growth. To further advance this system, we developed an on-site H 2 O 2 production system powered solely by sunlight, water, and air, eliminating the need for additional energy or chemical inputs. This integrated system demonstrates the potential for accelerated and sustainable soil remediation. Our findings highlight the promise of accelerated natural purification as a transformative approach to address soil contamination while safeguarding environmental health and agricultural productivity.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Xuechao Zhang,Haokai Cai,Anping Deng,Hongshuo Chen,Lingfeng Li,Peng Li
Surface Enhanced Raman Spectroscopy (SERS) and Electrochemical Impedance Spectroscopy (EIS) were combined in this work to develop a dual-channel aptamer-based biosensor platform for the detection of aflatoxin B1 (AFB1). The capture probe (Fe 3 O 4 @AuNFs@Aptamer) and the signal probe (AuNStar@4-MBA@Au@cDNA) were chemically synthesized step by step. During the process, SEM, TEM, XRD, Raman and UV-vis were applied to characterize these nanomaterials. The performance of the prepared biosensor was tested in AFB1 solutions. The results showed that the detection range of the SERS channel for AFB1 was 1×10 -4 to 1×10 2 ng/mL, with a limit of detection (LOD) of 7.83×10 -5 ng/mL and the average relative standard deviation (RSD) of the standard samples of 5.24%. And the EIS channel was 1×10 -4 to 1×10 2 ng/mL, with a LOD of 1.58×10 -4 ng/mL and the average RSD of the standard samples of 1.27%. These differences confirm that the combination of SERS/EIS technologies extends the detection limits and improves the reliability of this sensing platform. In summary, this strategy can be adapted to identify other target molecules simply by changing the aptamer, thereby providing a broad and universal platform for biosensing applications.
研究领域:
分析化学
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生物传感器
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食品安全
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纳米技术
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环境监测
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xiang Li,Guiyang Yu,Ruihong Sun,Ke Gong,Jinghao Zhu,Debao Wang
Directional and smooth transfer of charges across the interface is pivotal for heterojunction materials in terms of photochemical activity. However, large lattice mismatch and disordered interface inevitably exist in actual-prepared heterojunctions and bring great uncertainty in interfacial charge migration. Herein, an ingenious strategy with photoinduced metastable-charging d-orbital electrons of Re centers at the interface of ReS2/ZnIn2S4 (ReS2/ZIS) is clarified. This metastable interfacial electronic state is involved in creation of gradient charge migration channels. The charging process raises the occupancy of electron density, which provides large difference of electronic potential for the subsequent charge migration to ReS2. This gradient charge migration significantly accelerates the mobility and the electron injection rate at the interface, which achieves the 6.2-fold and 7.7-fold improvement. Consequently, the optimized 10% ReS2/ZIS composite exhibits the conversion rate for photocatalytic oxidation amine of 22.84 mmol·gcat−1 ·h−1, which is the highest efficiency achieved so far for photocatalytic amines oxidation coupling upon ReS2-based composites. This research furnishes original insights for charging orbital electrons to steer kinetics process of charge transfer and shed light on the design of advanced heterojunction materials for efficient solar energy conversion.
研究领域:
光催化
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材料科学
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物理化学
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纳米材料
·
能量转换
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高影响因子
危险品化学品经营许可证（带存储）