Tailoring terminated edge of hexagonal boron nitride (h-BN) for enhancing catalysis has turned to be an imperative for the rational design of a highly active aerobic catalyst. Herein, a tailoring N-terminated porous BN (P-BN) strategy is reported with a zinc (Zn) salt as a dual-functional template. The Zn salt acts as both an in situ template and a...
Several weeks prior to the announcement of the investigation, Ling continued to make appearances on state television in his positions of CPPCC Vice Chairman and United Front chief. On December 15 Ling had penned an article on the Communist theory publication Qiushi brimming with praise for the signature political philosophies of Xi Jinping such as the "Chinese Dream". This was seen by observers as a 'last-ditch' declaration of fealty to the new Chinese leader with whom Ling was thought to have lost favour.[11]
Sub-10 nm nanoparticles (NPs) of M(II)-substituted magnetite MxFe3-xO4 (MxFe1-xO•Fe2O3) (M = Mn, Fe, Co, Cu) were synthesized and studied as electrocatalysts for oxygen reduction reaction (ORR) in 0.1 M KOH solution. Loaded on commercial carbon support, these MxFe3-xO4 NPs showed the M(II)-dependent ORR catalytic activities with MnxFe3-xO4 being th...
On February 13, 2004, Yuntai Mountain as the fifth in the world, the third in the country China, was named the world's first World Geopark by UNESCO and caused attention at home and abroad. Meanwhile, Yuntaishan is also a national scenic spot, National Civilized Scenic Area, the first national AAAAA-level scenic spot, national natural heritage, national forest parks, national macaque nature reserve. Yuntain Mountain also has Asia's highest head drop waterfall.
Finally, at 15, Wang’s grandfather allowed him to start his suona training. In addition to practicing on the instrument, every day, he was to blow through a hollow reed into a basin of water to improve his breathing technique. At first, he couldn’t even make bubbles. After a year of practicing for hours each day, his grandfather gave him his first performance opportunity — but stage fright got the best of him.
Hexagonal boron nitride nanosheets (h-BNNs) with rather high specific surface area (SSA) are important two-dimensional layer-structured materials. Here, a solvent-mediated synthesis of h-BNNs revealed a template-free lattice plane control strategy that induced high SSA nanoporous structured h-BNNs with outstanding aerobic oxidative desulfurization...
The controlled exfoliation of hexagonal boron nitride (h-BN) into single- or few-layered nanosheets remains a grand challenge and becomes the bottleneck to essential studies and applications of h-BN. Here, we present an efficient strategy for the scalable synthesis of few-layered h-BN nanosheets (BNNS) using a novel gas exfoliation of bulk h-BN in...
Heterogeneous catalysis with core-shell structures has been a large area of focus for many years. This paper reviews the most recent work and research in coreshell catalysts utilizing noble metals, specifically gold, as the core within a metal oxide shell. The advantage of the core-shell structure lies in its capacity to retain catalytic activity u...
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“It’s quite hard for us to find jobs,” Wang says. “We’re not young, and we don’t have other skills.” When he first started doing short-term construction work earlier this year, he didn’t even know how to mix concrete, but other workers were friendly and helped teach him the basics. He doesn’t mind the labor, though it leaves him sore. He feels his cheeks are stiff after days away from the suona — a reminder that he was once a master musician.
On May 13, 2016, the No. 1 branch of Tianjin Municipal People's Procuratorate filed suit against Ling on behalf of the state at the No. 1 Intermediate People's Court of Tianjin.[20] On July 4, 2016, after a closed-door trial, Ling was sentenced to life imprisonment. He was convicted on charges of taking bribes, illegally obtaining state secrets and abuse of power. Upon hearing his sentence, Ling read aloud from a prepared script stating that he did not contest the conviction and "thanked" the court and the lawyers for their work, and used a Chinese idiom (kegu mingxi) to describe how unforgettable the trial had been to him.
We report the synthesis of core/shell face-centered tetragonal (fct)-FePd/Pd nanoparticles (NPs) via reductive annealing of core/shell Pd/Fe3O4 NPs followed by temperature-controlled Fe etching in acetic acid. Among three different kinds of core/shell FePd/Pd NPs studied (FePd core at ~8 nm and Pd shell at 0.27, 0.65 or 0.8 nm), the fct-FePd/Pd-0.6...
We report a facile synthesis of monodisperse ferrimagnetic CoxFe3-xO4 nanocubes (NCs) through thermal decomposition of Fe(acac)3 and Co(acac)2 (acac = acetylacetonate) in the presence of oleic acid and sodium oleate. The sizes of the NCs are tuned from 10-60 nm and their composition is optimized at x = 0.6 to show strong ferrimagnetism with the 20...
The suona is a traditional Chinese wind instrument similar to the oboe that is customarily played alongside gongs, drums, and the sheng mouth organ at weddings and funerals in rural northeastern China. In Shandong province, where the suona is sometimes known by the onomatopoeic name “wulawa,” the instrument is an integral part of traditional culture. But in Shandong’s Pingyi County, where Wang hails from, suona performances have been banned from funerals since October 2016 as part of local government reforms aiming to curb lavish, showy ceremonies.
Controlling the physical and chemical properties of alloy nanoparticles (NPs) is an important approach to optimize NP catalysis. Unlike other tuning knobs, such as size, shape and composition, crystal structure has received limited attention and not been well understood for its role in catalysis. This deficiency is mainly due to the difficulty in s...
For Wang, suona music runs in his blood. Yet even with four generations of suona players among his forebears, it took him years of practice to master even the basics on the notoriously difficult instrument. As a child, he spent months playing cymbals in his grandfather’s band to improve his sense of rhythm. Then, from the age of 8, he started learning the sheng mouth organ to perfect his intonation and dropped out of school to focus on music.
A kind of Ti–Fe–Ni–C compound powder was prepared by a novel precursor pyrolysis process using ferro-titanium, carbonyl nickel powder and sucrose as raw materials. The powder had a very compact structure and was uniform in particle size. The TiC–Fe36Ni composite coatings were simultaneously in-situ synthesized by Reactive Detonation-gun Spraying (RDS) using these Ti-Fe-Ni-C compound powders. The coatings presented typical morphology of thermal spraying coatings with two different areas: one was the area of TiC distribution where the round fine TiC particles (from 300nm to 1μm) were dispersed in the Fe36Ni alloy matrix; the other was the area of TiC accumulation (from 2 to 4μm). The surface hardness of the composite coating reached about 94 ± 2(HR15N).
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