Irradiation-stable hydrous titanium oxide-immobilized collagen fibers for uranium removal from radioactive wastewater

Tang, Yi; Zhou, Jibo; Guo, Junling; Liao, Xuepin; Shi, Bi

doi:10.1016/j.jenvman.2021.112001

Cited by 23 publications

(9 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They noted that these composites exhibited excellent Cr(VI) reduction efficiency. Collagen fibers (CFs) derived from animal hides with a natural three-dimensional structure and abundant functional groups (e.g., hydroxyl, carboxyl, and amide) are ecofriendly and intrinsically a renewable biomass resource …”

Section: Introductionmentioning

confidence: 99%

“…Collagen fibers (CFs) derived from animal hides with a natural three-dimensional structure and abundant functional groups (e.g., hydroxyl, carboxyl, and amide) are ecofriendly and intrinsically a renewable biomass resource. 28 To realize photoinduced charge separation and maintain strong photocatalytic ability, we fabricated a ternary g-C 3 N 4 /C/ Fe 2 O 3 composite by anchoring g-C 3 N 4 nanosheets onto C/ Fe 2 O 3 that was prepared using CF as the biochar resource following the Fe tanning mechanism for Cr(VI) reduction. 29 This ternary photocatalyst contained three semiconductors with an excellent band gap and could advantageously absorb solar light.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Zhao

Guo

Tang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Research on the rational design of photocatalysts for efficient hexavalent chromium (Cr(VI)) reduction from Cr(VI)containing wastewater has attracted widespread attention. In this paper, a novel g-C 3 N 4 /C/Fe 2 O 3 photocatalyst was successfully synthesized by anchoring g-C 3 N 4 nanosheets onto C/Fe 2 O 3 that was prepared using collagen fiber as the biochar resource following the Fe tanning mechanism to reduce Cr(VI) under artificial solar irradiation. Under the same conditions, the as-prepared g-C 3 N 4 /C/ Fe 2 O 3 photocatalyst exhibited higher Cr(VI) reduction efficiency than g-C 3 N 4 , and the Cr(VI) reduction efficiency increased as Fe content in the g-C 3 N 4 /C/Fe 2 O 3 photocatalyst increased. The enhanced photocatalytic performance was primarily ascribed to the formation of an indirect Z-scheme heterojunction between C/Fe 2 O 3 and g-C 3 N 4 , which improved the separation efficiency of the photogenerated charge carrier. Furthermore, radical trapping indicated that photoinduced electrons (e − ) were the main factor for Cr(VI) reduction. This work provides guidance for high value-added utilization of collagen fiber in constructing efficient light-driven photocatalysts and practical Cr(VI) removal from wastewater.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Zhao

Guo

Tang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…[16] Collagen nanofibers with hierarchical fibrous morphology and abundant active groups, such as -OH, -COOH, and -NH 2 , also promise in capturing aquatic uranium. Tang's group [72] introduced hydrous titanium oxide onto collagen nanofibers (50-200 nm), which presented a capacity of U(VI) adsorption of 328 mg g −1 due to the abundant hydroxyl groups of hydrous titanium oxide and amino groups of collagen (Figure 7A).…”

Section:  Static Adsorption Of Uranium Ionsmentioning

confidence: 99%

“…Reproduced with permission. [72] Copyright 2021, Elsevier Ltd. More importantly, the membrane can remain an adsorption capacity of 437 mg g −1 in 20 ppm of uranium solution even after 5 adsorption-desorption cycles. Mezzenga [34f] combined amyloid nanofibrils and activated carbons to remove uranium efficiently (Figure 7H-J).…”

Section:  Dynamic Filtration Of Uranium Ionsmentioning

confidence: 99%

Biofibrous nanomaterials for extracting strategic metal ions from water

et al. 2022

View full text Add to dashboard Cite

Strategic metals play an indispensable role in the related industries. Their extraction and recovery from water are of great significance due to both their rapid consumption and environmental concern. Biofibrous nanomaterials have shown great advantages in capturing metal ions from water. Recent progress in extraction of typical strategic metal ions such as noble metal ions, nuclear metal ions, and Li-battery related metal ions is reviewed here using typical biological nanofibrils like cellulose nanofibrils, chitin nanofibrils, and protein nanofibrils, as well as their assembly forms like fibers, aerogels/hydrogels, and membranes. An overview of advances in material design and preparation, extraction mechanism, dynamics/thermodynamics, and performance improvement in the last decade is provided. And at last, we propose the current challenges and future perspectives for promoting biological nanofibrous materials toward extracting strategic metal ions in practical conditions of natural seawater, brine, and wastewater.

show abstract

“…28 Collagen fiber has a multilevel fiber structure ranging from nanometers to micrometers, 29,30 and its nanoscale−microscale−macroscale multilevel structure makes it mainly based on rapid surface mass transfer, with low mass transfer resistance; its fiber has a capillary drainage effect, which can achieve a multilevel fiber drainage effect and then increases the mass transfer rate fast. 31 In the tanning process, the main preservation method of raw leather is salting preservation, the higher the salt concentration, the longer the preservation. Therefore, collagen fibers can maintain the stability of their structure for a long time in seawater.…”

Section: Introductionmentioning

confidence: 99%

Phosphate-Functionalized Fibrous Adsorbent for Effectively Extracting Uranium from Seawater

Lin

Chen

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Uranium is a basic and strategic resource related to national development and security. The uranium resources contained in the ocean are thousands of times that in the land, up to about 4.5 billion tons. However, it is still a severe challenge for the extraction of uranium from seawater as it contains trace amounts of uranium and a large number of cations. Herein, a new uranium extraction material, phosphate-functionalized collagen fibers, was prepared by a “covalent cross-linking” method by grafting the phosphate functional groups onto the surface of collagen fibers (CF) with a multihierarchy structure and multiple functional groups. The special structure of CF makes the adsorbent exhibit multistage kinetics and is controlled by chemisorption and layer diffusion. Through the introduction of amino and phosphoric acid functional groups, collagen fiber-alendronate sodium trihydrate (CF-AST) exhibits high-efficiency adsorption for uranium with the maximum adsorption reaching 277.78 mg g–1. In the extraction test from the East China Sea, CF-AST displayed a total uranium extraction mass of 29.61 μg after processing 10 L of seawater with an extraction rate of 89.69%. This adsorbent has shown superiorities in selectivity, kinetics, capacity, and reproducibility of uranium separation and enrichment from seawater, which is an economically viable and industrially scalable realistic uranium extraction material.

show abstract

Irradiation-stable hydrous titanium oxide-immobilized collagen fibers for uranium removal from radioactive wastewater

Cited by 23 publications

References 50 publications

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Biofibrous nanomaterials for extracting strategic metal ions from water

Phosphate-Functionalized Fibrous Adsorbent for Effectively Extracting Uranium from Seawater

Contact Info

Product

Resources

About

Irradiation-stable hydrous titanium oxide-immobilized collagen fibers for uranium removal from radioactive wastewater

Cited by 23 publications

References 50 publications

Novel g-C3N4/C/Fe2O3 Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Novel g-C3N4/C/Fe2O3 Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Biofibrous nanomaterials for extracting strategic metal ions from water

Phosphate-Functionalized Fibrous Adsorbent for Effectively Extracting Uranium from Seawater

Contact Info

Product

Resources

About

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation

Novel g-C₃N₄/C/Fe₂O₃ Composite for Efficient Photocatalytic Reduction of Aqueous Cr(VI) under Light Irradiation