Xiaoyu Gu
South China University of Technology
Composite numberSelf-healing hydrogelsNanomaterialsSpecific surface areaCarbonizationNanoparticleComposite materialNanotechnologyElectrodeFlexural strengthAqueous solutionChemistryPolymer chemistryMaterials scienceNanocomposite hydrogelsEmulsionPolyacrylamideAcrylamideDiselenideOxideCapacitive deionizationHectoriteMechanical strengthSwelling ratioGrapheneChemical engineeringPhase (matter)ElectrochemistryNanodotPorosityPickering emulsionNanocomposite
20Publications
15H-index
608Citations
Publications 20
Newest
#1Xiaoyu GuH-Index: 15
#2Yonghong DengH-Index: 34
Last. Chaoyang WangH-Index: 113
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A novel nitrogen-doped reduced graphene sponge composite (NRGS) is fabricated by using melamine sponge to restrain the aggregation of graphene sheets during reduction. The anion-exchange polymer layered graphene composites (A-NRGS) are prepared by coating the surface of the NRGS electrode with cross-linked poly(vinyl alcohol) with quaternization modification (C-qPVA). With the help of a melamine sponge to suppress the agglomerate of graphene sheets, the NRGS exhibits a unique three-dimensional (...
20 CitationsSource
#1Meng Hu (SCUT: South China University of Technology)H-Index: 13
#2Xiaoyu Gu (SCUT: South China University of Technology)H-Index: 15
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 41
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The introduction of nanomaterials to hydrogels is an effective way to improve the mechanical properties of hydrogels. Herein, carbon nanodot (C-dot) as a new-found excellent nanomaterial is first added to polyvinyl alcohol (PVA) hydrogel to prepare PVA/C-dot hydrogel by freeze–thaw method. The appropriate size and plenty of surface functional groups make C-dot an ideal nucleating agent for PVA crystallization, which leads to form a denser and more uniform cross-linked network in PVA hydrogel, an...
23 CitationsSource
#1Meng HuH-Index: 13
#2Xiaoyu GuH-Index: 15
Last. Chaoyang WangH-Index: 41
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Superior mechanical, recoverable, and swelling properties are important for the application practice of hydrogel. However, most of the hydrogels do not possess those three features at the same time. Herein, we have prepared a novel low chemical cross-linked polyacrylamide (PAM)/carbon nanodot (C-dot) hydrogel by introducing the C-dot into low chemically cross-linked PAM network. C-dot acts as both a physical cross-linker and lubricant in the low chemical cross-linked PAM network, and the synergi...
49 CitationsSource
#1Hui Wang (SCUT: South China University of Technology)H-Index: 50
#2Xiaoyu Gu (SCUT: South China University of Technology)H-Index: 15
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 113
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We fabricate a kind of catalytic self-propelling hydrogel soft motor (H-motor) via a facile injection loading method with low energy consumption. The factors influencing the practicability of H-motors, including locomotive ability and reusability, are investigated. The succession of rapid bubble evolution and propulsion endows the millimeter-sized columnar H-motors with length/diameter of 1 a remarkable speed of 3.84 mm s–1 in 10% (w/w) hydrogen peroxide (H2O2) solution. Moreover, the H-motors m...
22 CitationsSource
#1Zhengshan Du (SCUT: South China University of Technology)H-Index: 5
#2Yang Hu (SCUT: South China University of Technology)H-Index: 21
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 41
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Abstract The relatively poor mechanical strengths of ordinary hydrogels confine their extensive practical applications in many areas. In this work, we fabricated the poly(acrylamide) (PAAm)/hectorite (Laponite® XLS) double-network (DN) hydrogels containing neutral PAAm microgels, which displayed higher strength than the hydrogels without PAAm microgels. The mechanical strength was up to 110 KPa with 2 wt% hectorite and 0.028% N,N′-methylenebisacrylamide (MBAA). In the hydrogel system, the contin...
15 CitationsSource
#1Zhengshan DuH-Index: 5
#2Yang HuH-Index: 21
Last. Chaoyang WangH-Index: 41
view all 5 authors...
The relatively poor mechanical strengths of ordinary hydrogels confine their extensive practical applications in many areas. In this work, we fabricated the poly(acrylamide) (PAAm)/hectorite (Laponite® XLS) double-network (DN) hydrogels containing neutral PAAm microgels, which displayed higher strength than the hydrogels without PAAm microgels. The mechanical strength was up to 110KPa with 2wt% hectorite and 0.028% N,N′-methylenebisacrylamide (MBAA). In the hydrogel system, the continuous phase ...
#1Xiaoyu Gu (SCUT: South China University of Technology)H-Index: 15
#2Meng Hu (SCUT: South China University of Technology)H-Index: 13
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 113
view all 5 authors...
Abstract Mesoporous graphene electrodes are facilely fabricated via a simple thermal treatment of graphene oxide as well as site-localized etching of Fe 3 O 4 nanoparticles (E-Gr-Fe 3 O 4 ). Influences of FeCl 2 precursor on the amount of Fe 3 O 4 nanoparticles and textural properties of E-Gr-Fe 3 O 4 are investigated. The obtained graphene framework exhibits a porous structure with a specific surface area of 362 m 2 /g and excellent specific capacity of 128 F/g, which is twice higher than that ...
39 CitationsSource
#1Meng Hu (SCUT: South China University of Technology)H-Index: 13
#2Yu Yang (SCUT: South China University of Technology)H-Index: 60
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 41
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Polyacrylamide (PAM)/carbon nanodot (C-dot) nanocomposite (NC) hydrogels were successfully prepared by free radical polymerization using C-dots as cross-linkers. The storage modulus and the cross-link density of NC hydrogels compared with the pure PAM hydrogel were greatly enhanced due to strong hydrogen bonding interactions between PAM and C-dots. The swelling ratio of NC hydrogels increased with increasing the C-dot contents. The fracture strength of PAM/C-dot NC hydrogel was 47.5 kPa at a str...
22 CitationsSource
#1Xiaoyu Gu (SCUT: South China University of Technology)H-Index: 15
#2Yu Yang (SCUT: South China University of Technology)H-Index: 60
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 41
view all 5 authors...
2 CitationsSource
#1Yang Hu (SCUT: South China University of Technology)H-Index: 21
#2Yu Yang (SCUT: South China University of Technology)H-Index: 60
Last. Chaoyang Wang (SCUT: South China University of Technology)H-Index: 113
view all 5 authors...
2 CitationsSource