Nanosheet array-like Cu@Cu2O-CuNiAl(O)/rGO composites for highly efficient reduction of nitrophenol: Electronic and structure promotion effect of nickel
Nanosheet array-like Cu@Cu2O-CuNiAl(O)/rGO composites for highly efficient reduction of nitrophenol: Electronic and structure promotion effect of nickel
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纳米片阵列状Cu@Cu2O-CuNiAl(O)/rGO复合材料高效还原硝基苯酚：镍的电子和结构促进作用
DOI：
10.1016/j.cej.2021.131659
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发表时间：
2022
影响因子：
15.1
通讯作者：
Hui Zhang
中科院分区：
文献类型：
--
作者：
Zhuojun Wei;Danyang Feng;Jin Li;Yanjun Lin;Hui Zhang
Series of hierarchical nanosheet array-like compositesxCu@Cu2O-CuNiAl(O)/rGO (x= 1.0, 1.5, 2.0) were constructed via proper calcination of pre-prepared hybrids CuxNi3-xAl-layered double hydroxide/rGO in N2flow, upon the LDH layer atomic-level lattice confinedin situself-reduction for Cu2+ions by rGO substrate along with the dispersion effect of Ni-OH groups. Systematic characterizations reveal that core@shell-type Cu@Cu2O nanoparticles (NPs) are definitely trapped in the border space among the vertically adjacent CuNiAl(O) nanosheets and rGO substrates. All thexCu@Cu2O-CuNiAl(O)/rGO composites exhibit excellent catalytic activities for the reduction of 4-nitrophenol (4-NP), particularly 1.5Cu@Cu2O-CuNiAl(O)/rGO possesses the highest activity (kapp: 7.6 × 10-2s−1, TOF: 265.0 h−1), and superb reusability with insignificant loss in activity for continuous 25 cycles, much better than those of recently reported Cu-based catalysts and even comparable to some noble metal catalysts. The best performance of 1.5Cu@Cu2O-CuNiAl(O)/rGO can be mainly attributed to the most uniformly dispersed electrophilic core@shell Cu@Cu2O NPs modified by NiO species structurally and electronically, the strongest Cu–Cu2O–CuNiAl(O)–rGO synergistic effect upon the unique nanosheet array-like morphology providing more ion-accessible active sites, and much improved adsorption for 4-NP via rGO layer due to π-π stacking. The universality and fixed bed tests further demonstrate potential practical applications of the present hierarchical non-noble composites for water remediation. The present facile synthesis strategy of the nanosheet array-like Cu@Cu2O-CuNiAl(O)/rGO composites with multi-phases synergy may be greatly beneficial to the design and construction of many other highly efficient multi-transition metal-based catalysts with excellent structural robustness for a broad range of applications in related catalysis processes.
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影响因子：
9.5
作者：
Boulanger N;Kuzenkova AS;Iakunkov A;Romanchuk AY;Trigub AL;Egorov AV;Bauters S;Amidani L;Retegan M;Kvashnina KO;Kalmykov SN;Talyzin AV
通讯作者：
Talyzin AV
影响因子：
8.8
作者：
Ramu, A. G.;Kumari, M. L. Aruna;Choi, Dongjin
通讯作者：
Choi, Dongjin
影响因子：
6.2
作者：
S. Vivek;S. Preethi;T. H. V. Kumar;A. Sundramoorthy;K. S. Babu
通讯作者：
S. Vivek;S. Preethi;T. H. V. Kumar;A. Sundramoorthy;K. S. Babu
影响因子：
22.1
作者：
Weichun Ye;Jing Yu;Yaxin Zhou;D. Gao;Daoai Wang;Chunming Wang;D. Xue
通讯作者：
Weichun Ye;Jing Yu;Yaxin Zhou;D. Gao;Daoai Wang;Chunming Wang;D. Xue
影响因子：
6.2
作者：
M. Tajbakhsh;H. Alinezhad;M. Nasrollahzadeh;Taghi A. Kamali
通讯作者：
M. Tajbakhsh;H. Alinezhad;M. Nasrollahzadeh;Taghi A. Kamali